wmi query - Page 695 - Developer IT

bind parent child listview asp.net

- by Chris

I'm trying to display two linq query results in a prent and child listview. I have the following code which gets the correct values to populate the listviews but when I nest the child listview inside the parent list view, I get an error saying "The name 'ListView2' does not exist in the current context". I presume I need to bind the two listviews in the code behind but my problem is I don't know how or the best way to do this. I have read a couple of posts on similar problems but my lack of knowledge on the subject doesn't make it clear to me. Please can somebody help me figure this out? It's the final piece of code I need to complete. Many thanks in advance. Here is my .aspx code: <asp:ListView ID="ListView1" runat="server"> <EmptyDataTemplate>No data was returned.</EmptyDataTemplate> <ItemSeparatorTemplate><br /></ItemSeparatorTemplate> <ItemTemplate> <li> <asp:Label ID="LabelID" runat="server" Text='<%# Eval("RecordID") %>'></asp:Label><br /> <asp:Label ID="LabelNumber" runat="server" Text='<%# Eval("CartID") %>'></asp:Label><br /> <asp:Label ID="LabelName" runat="server" Text='<%# Eval("Number") %>'></asp:Label><br /> <asp:Label ID="LabelDestination" runat="server" Text='<%# Eval("Destination") %>'></asp:Label><br /> <asp:Label ID="LabelPkgName" runat="server" Text='<%# Eval("PkgName") %>'></asp:Label> <li>  <asp:ListView ID="ListView2" runat="server"> <EmptyDataTemplate>No data was returned.</EmptyDataTemplate> <ItemSeparatorTemplate><br /></ItemSeparatorTemplate> <ItemTemplate> <li> <asp:Label ID="LabelFeatureName" runat="server" Text='<%# Eval("FeatureName") %>'></asp:Label><br /> <asp:Label ID="LabelFeatureSetUp" runat="server" Text='<%# Eval("FeatureSetUp") %>'></asp:Label><br /> <asp:Label ID="LabelFeatureMonthly" runat="server" Text='<%# Eval("FeatureMonthly") %>'></asp:Label><br /> </li> </ItemTemplate> <LayoutTemplate> <ul ID="itemPlaceholderContainer" runat="server" style=""> <li runat="server" id="itemPlaceholder" /> </ul> </LayoutTemplate> </asp:ListView>  </li> </li> </ItemTemplate> <LayoutTemplate> <ul ID="itemPlaceholderContainer" runat="server" style=""> <li runat="server" id="itemPlaceholder" /> </ul> </LayoutTemplate> </asp:ListView> Here is my code behind: MyShoppingCart userShoppingCart = new MyShoppingCart(); string cartID = userShoppingCart.GetShoppingCartId(); using (ShoppingCartv2Entities db = new ShoppingCartv2Entities()) { var CartNumber = from c in db.NewViews where c.CartID == cartID select c; foreach (NewView item in CartNumber) { ListView1.DataSource = CartNumber; ListView1.DataBind(); } var CartFeature = from f in db.NewViews join o in db.NumberFeatureViews on f.RecordID equals o.RecordID where f.CartID == cartID select new { o.FeatureName, o.FeatureSetUp, o.FeatureMonthly }; foreach (var x in CartFeature) { ListView2.DataSource = CartFeature; ListView2.DataBind(); } }

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How to concatenate the contents of all children of a node in XPath?

- by Brian

Is it possible with XPath to get a concatenated view of all of the children of a node? I am looking for something like the JQuery .html() method. For example, if I have the following XML: <h3 class="title"> <span class="content">this</span> <span class="content"> is</span> <span class="content"> some</span> <span class="content"> text</span> </h3> I would like an XPath query on "h3[@class='title']" that would give me "this is some text". That is the real question, but if more context/background is helpful, here it is: I am using XPath and I used this post to help me write some complex XSL. My source XML looks like this. <h3 class="title">Title</h3> <p> <span class="content">Some</span> <span class="content"> text</span> <span class="content"> for</span> <span class="content"> this</span> <span class="content"> section</span> </p> <p> <span class="content">Another</span> <span class="content"> paragraph</span> </p> <h3 class="title"> <span class="content">Title</span> <span class="content"> 2</span> <span class="content"> is</span> <span class="content"> complex</span> </h3> <p> <span class="content">Here</span> <span class="content"> is</span> <span class="content"> some</span> <span class="content"> text</span> </p> My output XML considers each <h3> as well as all <p> tags until the next <h3>. I wrote the XSL as follows: <xsl:template match="h3[@class='title']"> ... <xsl:apply-templates select="following-sibling::p[ generate-id(preceding-sibling::h3[1][@class='title'][text()=current()/text()]) = generate-id(current()) ]"/> ... </xsl:template> The problem is that I use the text() method to identify h3s that are the same. In the example above, the "Title 2 is complex" title's text() method returns whitespace. My thought was to use a method like JQuery's .html that would return me "Title 2 is complex"

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Problem with PHP; Posting Hidden Value!!?

- by Derek

Hi, I have a page which basically allows an admin user to create manager user types (basically a register function. So when the values are submitted, they are stored into the DB, very very basic stuff. However, I have a hidden variable type..reasons are I have 3 different user levels and I have declared they identification as an integer (e.g. 7 = manager, 8 =user etc.) Can someone help me out with how to correctly pass this hidden value so it stores in the database... Here is my form: <form id="userreg" name="userreg" method="post" action="adminadduser-process.php"> <label>Full Name:</label> <input name="fullname" size="40" id="fullname" value="<?php if (isset($_POST['fullname'])); ?>"/> <br /> <label>Username:</label> <input name="username" size="40" id="username" value="<?php if (isset($_POST['username'])); ?>"/> <br /> <label>Password:</label> <input name="password" size="40" id="password" value="<?php if (isset($_POST['password'])); ?>"/> <br /> <label>Email Address:</label> <input name="emailaddress" size="40" id="emailaddress" value="<?php if (isset($_POST['emailaddress'])); ?>"/> <br /> <input name="userlevel" type="hidden" size="1" id="userlevel" value="<?php $_POST[5]; ?>" /> <br /> <input value="Add User" class="addbtn" type="submit" /> </form></div> Next, here is the script that runs the query: <?php require_once "config.php"; $fullname = $_POST['fullname']; $username = $_POST['username']; $password = $_POST['password']; $emailaddress = $_POST['emailaddress']; $userlevel = $_POST[5]; $sql = "INSERT INTO users_tb VALUES('".$user_id."','".$fullname."','".$username."',MD5('".$password."'),'".$emailaddress."','".$userlevel."')"; $result = mysql_query($sql, $connection) or die("MySQL Error: ".mysql_error()); header("Location: adminhome.php"); exit(); ?> I'm basically trying to pass the hidden typem with a constant value of '5' just for this form, as it will not be changed...also while im here, for some reason, the 'fullname' is not stored in the DB either!!?? WTH?? all other fields are processed fine. Any help is much appreciated! Thank you.

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merge 2 php arrays which aren't of the same length by value

- by Iain Urquhart

Excuse me if this has indeed been asked before, I couldn't see anything that fitted my needs out of the dozens of similar titled posts out there ;) I'm trying to merge 2 php arrays which aren't of the same length, and merge them on a value that exists from identical key = values within both arrays. My first query produces an array from a nested set: array ( 1 => array ( 'node_id' => 1, 'lft' => 1, 'rgt' => 4, 'moved' => 0, 'label' => 'Home', 'entry_id' => 1, 'template_path' => '', 'custom_url' => '/', 'extra' => '', 'childs' => 1, 'level' => 0, 'lower' => 0, 'upper' => 0 ), 2 => array ( 'node_id' => 2, 'lft' => 2, 'rgt' => 3, 'moved' => 0, 'label' => 'Home', 'entry_id' => NULL, 'template_path' => '', 'custom_url' => 'http://google.com/', 'extra' => '', 'childs' => 0, 'level' => 1, 'lower' => 0, 'upper' => 0 ) ); My second array returns some additional key/values I'd like to insert to the above array: array ( 'entry_id' => 1, 'entry_title' => 'This is my title', ); I want to merge both of the arrays inserting the additional information into those that match on the key 'entry_id', as well as keeping the sub arrays which don't match. So, by combining the two arrays, I'd end up with array ( 1 => array ( 'node_id' => 1, 'lft' => 1, 'rgt' => 4, 'moved' => 0, 'label' => 'Home', 'entry_id' => 1, 'template_path' => '', 'custom_url' => '/', 'extra' => '', 'childs' => 1, 'level' => 0, 'lower' => 0, 'upper' => 0, 'entry_title' => 'This is my title' ), 2 => array ( 'node_id' => 2, 'lft' => 2, 'rgt' => 3, 'moved' => 0, 'label' => 'Home', 'entry_id' => NULL, 'template_path' => '', 'custom_url' => 'http://google.com/', 'extra' => '', 'childs' => 0, 'level' => 1, 'lower' => 0, 'upper' => 0, 'entry_title' => NULL ) ); Actually, writing this out makes me think I should do it via sql... Any help/advice greatly appreciated...

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Sqlite3 : "Database is locked" error

- by Miraaj

Hi all, In my cocoa application I am maintaining a SQLite db within resources folder and trying to do some select, delete operations in it but after some time it starts giving me 'Database is locked' error. The methods which I am using for select delete operations are as follows: // method to retrieve data if (sqlite3_open([databasePath UTF8String], &database) != SQLITE_OK) { sqlite3_close(database); NSAssert(0, @"Failed to open database"); } NSLog(@"mailBodyFor:%d andFlag:%d andFlag:%@",UId,x,Ffolder); NSMutableArray *recordsToReturn = [[NSMutableArray alloc] initWithCapacity:2]; NSString *tempMsg; const char *sqlStatementNew; NSLog(@"before switch"); switch (x) { case 9: // tempMsg=[NSString stringWithFormat:@"SELECT * FROM users_messages"]; tempMsg=[NSString stringWithFormat:@"SELECT message,AttachFileOriName as oriFileName,AttachmentFileName as fileName FROM users_messages WHERE id = (select message_id from users_messages_status where id= '%d')",UId]; NSLog(@"mail body query - %@",tempMsg); break; default: break; } sqlStatementNew = [tempMsg cStringUsingEncoding:NSUTF8StringEncoding]; sqlite3_stmt *compiledStatementNew; NSLog(@"before if statement"); if(sqlite3_prepare_v2(database, sqlStatementNew, -1, &compiledStatementNew, NULL) == SQLITE_OK) { NSLog(@"the sql is finalized"); while(sqlite3_step(compiledStatementNew) == SQLITE_ROW) { NSMutableDictionary *recordDict = [[NSMutableDictionary alloc] initWithCapacity:3]; NSString *message; if((char *)sqlite3_column_text(compiledStatementNew, 0)){ message = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatementNew, 0)]; } else{ message = @""; } NSLog(@"message - %@",message); NSString *oriFileName; if((char *)sqlite3_column_text(compiledStatementNew, 1)){ oriFileName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatementNew, 1)]; } else{ oriFileName = @""; } NSLog(@"oriFileName - %@",oriFileName); NSString *fileName; if((char *)sqlite3_column_text(compiledStatementNew, 2)){ fileName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatementNew, 2)]; } else{ fileName = @""; } NSLog(@"fileName - %@",fileName); [recordDict setObject:message forKey:@"message"]; [recordDict setObject:oriFileName forKey:@"oriFileName"]; [recordDict setObject:fileName forKey:@"fileName"]; [recordsToReturn addObject:recordDict]; [recordDict release]; } sqlite3_finalize(compiledStatementNew); sqlite3_close(database); NSLog(@"user messages return -%@",recordsToReturn); return recordsToReturn; } else{ NSLog(@"Error while creating retrieving mailBodyFor in messaging '%s'", sqlite3_errmsg(database)); sqlite3_close(database); } // method to delete data if (sqlite3_open([databasePath UTF8String], &database) != SQLITE_OK) { sqlite3_close(database); NSAssert(0, @"Failed to open database"); } NSString *deleteQuery = [[NSString alloc] initWithFormat:@"delete from users_messages_status where id IN(%@)",ids]; NSLog(@"users_messages_status msg deleteQuery - %@",deleteQuery); sqlite3_stmt *deleteStmnt; const char *sql = [deleteQuery cStringUsingEncoding:NSUTF8StringEncoding]; if(sqlite3_prepare_v2(database, sql, -1, &deleteStmnt, NULL) != SQLITE_OK){ NSLog(@"Error while creating delete statement. '%s'", sqlite3_errmsg(database)); } else{ NSLog(@"successful deletion from users_messages"); } if(SQLITE_DONE != sqlite3_step(deleteStmnt)){ NSLog(@"Error while deleting. '%s'", sqlite3_errmsg(database)); } sqlite3_close(database); Things are going wrong in this sequence Data is retrieved 'Database is locked' error arises on performing delete operation. When I retry to perform 1st step.. it now gives same error. Can anyone suggest me: If I am doing anything wrong or missing some check? Is there any way to unlock it when it gives locked error? Thanks, Miraaj

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Generate XML from Database using XSLT

- by Nisarg Mehta

Hi , I am fetching data from two tables CARRIER_IFTA ,IFTA_NAME. My Select Query is like below.. SELECT t1.IFTA_LICENSE_NUMBER,t1.IFTA_BASE_STATE,t2.NAME_TYPE,t2.NAME from CARRIER_IFTA t1 inner join IFTA_NAME t2 on t1.IFTA_LICENSE_NUMBER=t2.IFTA_LICENSE_NUMBER My Data is coming in this way... IFTA_LICENSE_NUMBER IFTA_BASE_STATE NAME_TYPE NAME -------------------------------------------------------- 630908333 US LG XYZ 630908333 US MG PQR 730908344 US LG ABC Now using XSLT I want to generate XML like this <T0019> <IFTA_ACCOUNT> <IFTA_LICENSE_NUMBER>630908333</IFTA_LICENSE_NUMBER> <IFTA_BASE_STATE>US</IFTA_BASE_STATE> <IFTA_NAME> <NAME_TYPE>LG<NAME_TYPE> <NAME>XYZ</NAME> </IFTA_NAME> <IFTA_NAME> <NAME_TYPE>MG<NAME_TYPE> <NAME>PQR</NAME> <IFTA_NAME> </IFTA_ACCOUNT> <IFTA_ACCOUNT> <IFTA_LICENSE_NUMBER>730908344</IFTA_LICENSE_NUMBER> <IFTA_BASE_STATE>US</IFTA_BASE_STATE> <IFTA_NAME> <NAME_TYPE>LG<NAME_TYPE> <NAME>ABC</NAME> </IFTA_NAME> </IFTA_ACCOUNT> </T0019> i have used below xslt but it is not giveng me desire result ... <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"> <xsl:template match="/ROWSET"> <xsl:element name="T0019"> <xsl:apply-templates select="IFTAACCOUNT"/> </xsl:element> </xsl:template> <xsl:template match="IFTAACCOUNT"> <xsl:element name="IFTAACCOUNT"> <xsl:apply-templates select="IFTA_CARRIER_ID_NUMBER"/> </xsl:element> </xsl:template> <xsl:template match="IFTA_LICENSE_NUMBER"> <xsl:element name="IFTA_LICENSE_NUMBER"> <xsl:apply-templates /> </xsl:element> </xsl:template> <xsl:template match="IFTA_BASE_STATE"> <xsl:element name="IFTA_BASE_STATE"> <xsl:apply-templates /> </xsl:element> </xsl:template> <xsl:template match="IRP_NAME"> <IRP_NAME> <xsl:apply-templates select="NAME"/> <xsl:apply-templates select="NAME_TYPE"/> </IRP_NAME> </xsl:template> <xsl:template match="NAME"> <xsl:element name="NAME"> <xsl:value-of select="." /> </xsl:element> </xsl:template> <xsl:template match="NAME_TYPE"> <xsl:element name="NAME_TYPE"> <xsl:apply-templates /> </xsl:element> </xsl:template> </xsl:stylesheet> but it is not giving desire result ... Please help me ... Thanks in Advance...

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missing table in SQLite with specific version of HTC DESIRE HD

- by William

My application has a SQLite database in the asset folder. When the user launches my application, the database is created and the tables too. This works fine with a lot of devices (Nexus One, Htc Magic, SGS, X10… and even Htc Desire HD v2.2). My application works with all versions of Android (tested on my device (1.6, 2.2, 2.2.1 Htc Magic) and on the emulator (v1,5 until v2.3). I have just a problem with HTC DESIRE HD v2.2.1 1.72.405.3. The logcat: android.database.sqlite.SQLiteException: no such table: LISTE: , while compiling: select _id from LISTE at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2833) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2854) at android.app.ActivityThread.access$2300(ActivityThread.java:136) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2179) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:143) at android.app.ActivityThread.main(ActivityThread.java:5068) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) at dalvik.system.NativeStart.main(Native Method) Caused by: android.database.sqlite.SQLiteException: no such table: LISTE: , while compiling: select _id from LISTE at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91) at android.database.sqlite.SQLiteCompiledSql.(SQLiteCompiledSql.java:64) at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:80) at android.database.sqlite.SQLiteQuery.(SQLiteQuery.java:46) at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:53) at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1417) at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1387) ... 11 more My application create the database but it doesn’t copy the tables of the file of the asset folder in data\data\packagename\databases\mydatabase. My code: public void createDataBase() throws IOException{ boolean dbExist = checkDataBase(); if(dbExist){ //do nothing - database already exist }else{ //By calling this method and empty database will be created into the default system path //of your application so we are gonna be able to overwrite that database with our database. this.getReadableDatabase(); try { copyDataBase(); } catch (IOException e) { throw new Error("Error copying database"); } } } private void copyDataBase() throws IOException{ //Open your local db as the input stream InputStream myInput = myContext.getAssets().open(DB_NAME); // Path to the just created empty db String outFileName = DB_PATH + DB_NAME; //Open the empty db as the output stream OutputStream myOutput = new FileOutputStream(outFileName); //transfer bytes from the inputfile to the outputfile byte[] buffer = new byte[1024]; int length; while ((length = myInput.read(buffer))!= -1){ if (length > 0){ myOutput.write(buffer, 0, length); } } //Close the streams myOutput.flush(); myOutput.close(); myInput.close(); } I think that the copydatabase function has a problem but I don't see. This code works fine with all devices except the HTC DESIRE HD v2.2.1 1.72.405.3. What problems might exist here for the HTC Desire with the given version above? How can this be remedied?

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Doing XML extracts with XSLT without having to read the whole DOM tree into memory?

- by Thorbjørn Ravn Andersen

I have a situation where I want to extract some information from some very large but regular XML files (just had to do it with a 500 Mb file), and where XSLT would be perfect. Unfortunately those XSLT implementations I am aware of (except the most expensive version of Saxon) does not support only having the necessary part of the DOM read in but reads in the whole tree. This cause the computer to swap to death. The XPath in question is //m/e[contains(.,'foobar') so it is essentially just a grep. Is there an XSLT implementation which can do this? Or an XSLT implementation which given suitable "advice" can do this trick of pruning away the parts in memory which will not be needed again? I'd prefer a Java implementation but both Windows and Linux are viable native platforms. EDIT: The input XML looks like: <log>  <e h='12:09:27,284' l='org.apache.catalina.session.ManagerBase' z='1246010967284' t='ContainerBackgroundProcessor[StandardEngine[Catalina]]' v='10000'> <m>Registering Catalina:type=Manager,path=/axsWHSweb-20090626,host=localhost</m></e> <e h='12:09:27,284' l='org.apache.catalina.session.ManagerBase' z='1246010967284' t='ContainerBackgroundProcessor[StandardEngine[Catalina]]' v='10000'> <m>Force random number initialization starting</m></e> <e h='12:09:27,284' l='org.apache.catalina.session.ManagerBase' z='1246010967284' t='ContainerBackgroundProcessor[StandardEngine[Catalina]]' v='10000'> <m>Getting message digest component for algorithm MD5</m></e> <e h='12:09:27,284' l='org.apache.catalina.session.ManagerBase' z='1246010967284' t='ContainerBackgroundProcessor[StandardEngine[Catalina]]' v='10000'> <m>Completed getting message digest component</m></e> <e h='12:09:27,284' l='org.apache.catalina.session.ManagerBase' z='1246010967284' t='ContainerBackgroundProcessor[StandardEngine[Catalina]]' v='10000'> <m>getDigest() 0</m></e> ...... </log> Essentialy I want to select some m-nodes (and I know the XPath is wrong for that, it was just a quick hack), but maintain the XML layout. EDIT: It appears that STX may be what I am looking for (I can live with another transformation language), and that Joost is an implementation hereof. Any experiences? EDIT: I found that Saxon 6.5.4 with -Xmx1500m could load my XML, so this allowed me to use my XPaths right now. This is just a lucky stroke so I'd still like to solve this generically - this means scriptable which in turn means no handcrafted Java filtering first. EDIT: Oh, by the way. This is a log file very similar to what is generated by the log4j XMLLayout. The reason for XML is to be able to do exactly this, namely do queries on the log. This is the initial try, hence the simple question. Later I'd like to be able to ask more complex questions - therefore I'd like the query language to be able to handle the input file.

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C/PHP: How do I convert the following PHP JSON API script into a C plugin for apache?

- by TeddyB

I have a JSON API that I need to provide super fast access to my data through. The JSON API makes a simply query against the database based on the GET parameters provided. I've already optimized my database, so please don't recommend that as an answer. I'm using PHP-APC, which helps PHP by saving the bytecode, BUT - for a JSON API that is being called literally dozens of times per second (as indicated by my logs), I need to reduce the massive RAM consumption PHP is consuming ... as well as rewrite my JSON API in a language that execute much faster than PHP. My code is below. As you can see, is fairly straight forward. <?php define(ALLOWED_HTTP_REFERER, 'example.com'); if ( stristr($_SERVER['HTTP_REFERER'], ALLOWED_HTTP_REFERER) ) { try { $conn_str = DB . ':host=' . DB_HOST . ';dbname=' . DB_NAME; $dbh = new PDO($conn_str, DB_USERNAME, DB_PASSWORD); $params = array(); $sql = 'SELECT homes.home_id, address, city, state, zip FROM homes WHERE homes.display_status = true AND homes.geolat BETWEEN :geolatLowBound AND :geolatHighBound AND homes.geolng BETWEEN :geolngLowBound AND :geolngHighBound'; $params[':geolatLowBound'] = $_GET['geolatLowBound']; $params[':geolatHighBound'] = $_GET['geolatHighBound']; $params[':geolngLowBound'] =$_GET['geolngLowBound']; $params[':geolngHighBound'] = $_GET['geolngHighBound']; if ( isset($_GET['min_price']) && isset($_GET['max_price']) ) { $sql = $sql . ' AND homes.price BETWEEN :min_price AND :max_price '; $params[':min_price'] = $_GET['min_price']; $params[':max_price'] = $_GET['max_price']; } if ( isset($_GET['min_beds']) && isset($_GET['max_beds']) ) { $sql = $sql . ' AND homes.num_of_beds BETWEEN :min_beds AND :max_beds '; $params['min_beds'] = $_GET['min_beds']; $params['max_beds'] = $_GET['max_beds']; } if ( isset($_GET['min_sqft']) && isset($_GET['max_sqft']) ) { $sql = $sql . ' AND homes.sqft BETWEEN :min_sqft AND :max_sqft '; $params['min_sqft'] = $_GET['min_sqft']; $params['max_sqft'] = $_GET['max_sqft']; } $stmt = $dbh->prepare($sql); $stmt->execute($params); $result_set = $stmt->fetchAll(PDO::FETCH_ASSOC); /* output a JSON representation of the home listing data retrieved */ ob_start("ob_gzhandler"); // compress the output header('Content-type: text/javascript'); print "{'homes' : "; array_walk_recursive($result_set, "cleanOutputFromXSS"); print json_encode( $result_set ); print '}'; $dbh = null; } catch (PDOException $e) { die('Unable to retreive home listing information'); } } function cleanOutputFromXSS(&$value) { $value = htmlspecialchars($value, ENT_QUOTES, 'UTF-8'); } ?> How would I begin converting this PHP code over to C, since C is both better on memory management (since you do it yourself) and much, much faster to execute?

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PHP - Accessing a value selected in Combobox

- by Pavitar

I want to write a code that should let me select from a drop down list and onClick of a button load the data from a mysql database.However I cannot access the value selected in the drop down menu.I have tried to access them by $_POST['var_name'] but still can't do it. I'm new to PHP. Following is my code: <?php function load(){ $department = $_POST['dept']; $employee = $_POST['emp']; //echo "$department"; //echo "$employee"; $con = mysqli_connect("localhost", "root", "pwd", "payroll"); $rs = $con->query("select * from dept where deptno='$department'"); $row = $rs->fetch_row(); $n = $row[0]; $rs->free(); $con->close(); } ?> <html> <head> <title>Payroll</title> </head> <body> <h1 align="center">IIT Department</h1> <form method="post"> <table align="center"> <tr> <td> Dept Number: <select name="dept"> <option value="10" selected="selected">10</option> <option value="20">20</option> <option value="30">30</option> <option value="40">40</option> </select> </td> <td> <input type="button" value="ShowDeptEmp" name="btn1"> </td> <td> Job: <select name="job"> <option value="President" selected="selected">President</option> <option value="Manager">Manager</option> <option value="Clerk">Clerk</option> <option value="Salesman">Salesman</option> <option value="Analyst">Analyst</option> </select> </td> <td> <input type="button" value="ShowJobEmp" name="btn1"> </td> </tr> </table> </form> <?php if(isset($_POST['dept']) && $_POST['dept'] != "") load(); ?> </body> </html>

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SQL: Using a CASE Statement to update a 1000 rows at once, how??

- by SoLoGHoST

Ok, I would like to use a CASE STATEMENT for this, but I am lost with this. Basically, I need to update a ton of rows, but just on the "position" column. I need to update all "position" values from 0 - count(position) for each id_layout_position column per id_layout column. Here's what I got for a regular update, but I don't wanna throw this into a foreach loop, as it would take forever to do it. I'm using SMF (Simple Machines Forums), so it might look a little different, but the idea is the same, and CASE statements are supported... $smcFunc['db_query']('', ' UPDATE {db_prefix}dp_positions SET position = {int:position} WHERE id_layout_position = {int:id_layout_position} AND id_layout = {int:id_layout}', array( 'position' => $position++, 'id_layout_position' => (int) $id_layout_position, 'id_layout' => (int) $id_layout, ) ); Anyways, I need to apply some sort of CASE on this so that I can auto-increment by 1 all values that it finds and update to the next possible value. I know I'm doing this wrong, even in this QUERY. But I'm totally lost when it comes to CASES. Here's an example of a CASE being used within SMF, so you can see this and hopefully relate: $conditions = ''; foreach ($postgroups as $id => $min_posts) { $conditions .= ' WHEN posts >= ' . $min_posts . (!empty($lastMin) ? ' AND posts <= ' . $lastMin : '') . ' THEN ' . $id; $lastMin = $min_posts; } // A big fat CASE WHEN... END is faster than a zillion UPDATE's ;). $smcFunc['db_query']('', ' UPDATE {db_prefix}members SET id_post_group = CASE ' . $conditions . ' ELSE 0 END' . ($parameter1 != null ? ' WHERE ' . (is_array($parameter1) ? 'id_member IN ({array_int:members})' : 'id_member = {int:members}') : ''), array( 'members' => $parameter1, ) ); Before I do the update, I actually have a SELECT which throws everything I need into arrays like so: $disabled_sections = array(); $positions = array(); while ($row = $smcFunc['db_fetch_assoc']($request)) { if (!isset($disabled_sections[$row['id_group']][$row['id_layout']])) $disabled_sections[$row['id_group']][$row['id_layout']] = array( 'info' => $module_info[$name], 'id_layout_position' => $row['id_layout_position'] ); // Increment the positions... if (!is_null($row['position'])) { if (!isset($positions[$row['id_layout']][$row['id_layout_position']])) $positions[$row['id_layout']][$row['id_layout_position']] = 1; else $positions[$row['id_layout']][$row['id_layout_position']]++; } else $positions[$row['id_layout']][$row['id_layout_position']] = 0; } Thanks, I know if anyone can help me here it's definitely you guys and gals... Anyways, here is my question: How do I use a CASE statement in the first code example, so that I can update all of the rows in the position column from 0 - total # of rows found, that have that id_layout value and that id_layout_position value, and continue this for all different id_layout values in that table? Can I use the arrays above somehow? I'm sure I'll have to use the id_layout and id_layout_position values for this right? But how can I do this?

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PHP & MySQL pagination display problem.

- by TaG

I asked a similar question like this yesterday but after waiting for ever I figured out part of the problem but now I'm stuck again I'm trying to display ... when the search results are to long because my pagination links will keep on displaying and will not stop until every link is displayed on the page. For example I'm trying to achieve the following in the example below. Can some one help me fix my code so I can update my site. Thanks This is what I want to be able to do. First Previous 1 2 ... 5 6 7 8 9 10 11 12 13 ... 199 200 Next Last Here is my pagination code that displays the links. $display = 20; if (isset($_GET['p']) && is_numeric($_GET['p'])) { $pages = $_GET['p']; } else { $q = "SELECT COUNT(id) FROM comments WHERE user_id=3"; $r = mysqli_query ($mysqli, $q) or trigger_error("Query: $q\n<br />MySQL Error: " . mysqli_error($mysqli)); $row = mysqli_fetch_array ($r, MYSQLI_NUM); $records = $row[0]; if ($records > $display) { $pages = ceil ($records/$display); } else { $pages = 1; } } if (isset($_GET['s']) && is_numeric($_GET['s'])) { $start = $_GET['s']; } else { $start = 0; } //content goes here if ($pages > 1) { echo '<br /><p>'; $current_page = ($start/$display) + 1; if ($current_page != 1) { echo '<a href="index.php">First</a>'; } if ($current_page != 1) { echo '<a href="index.php?s=' . ($start - $display) . '&p=' . $pages . '">Previous</a> '; } for ($i = 1; $i <= $pages; $i++) { if ($i != $current_page) { echo '<a href="index.php?s=' . (($display * ($i - 1))) . '&p=' . $pages . '">' . $i . '</a> '; } else { echo '<span>' . $i . '</span> '; } } if ($current_page != $pages) { echo '<a href="index.php?s=' . ($start + $display) . '&p=' . $pages . '">Next</a>'; } if ($current_page != $pages) { echo '<a href="index.php?s=' . ($pages - 1) . '&p=' . $pages . '">Last</a>'; } echo '</p>'; }

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Keeping video viewing statistics breakdown by video time in a database

- by Septagram

I need to keep a number of statistics about the videos being watched, and one of them is what parts of the video are being watched most. The design I came up with is to split the video into 256 intervals and keep the floating-point number of views for each of them. I receive the data as a number of intervals the user watched continuously. The problem is how to store them. There are two solutions I see. Row per every video segment Let's have a database table like this: CREATE TABLE `video_heatmap` ( `id` int(11) NOT NULL AUTO_INCREMENT, `video_id` int(11) NOT NULL, `position` tinyint(3) unsigned NOT NULL, `views` float NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `idx_lookup` (`video_id`,`position`) ) ENGINE=MyISAM Then, whenever we have to process a number of views, make sure there are the respective database rows and add appropriate values to the views column. I found out it's a lot faster if the existence of rows is taken care of first (SELECT COUNT(*) of rows for a given video and INSERT IGNORE if they are lacking), and then a number of update queries is used like this: UPDATE video_heatmap SET views = views + ? WHERE video_id = ? AND position >= ? AND position < ? This seems, however, a little bloated. The other solution I came up with is Row per video, update in transactions A table will look (sort of) like this: CREATE TABLE video ( id INT NOT NULL AUTO_INCREMENT, heatmap BINARY (4 * 256) NOT NULL, ... ) ENGINE=InnoDB Then, upon every time a view needs to be stored, it will be done in a transaction with consistent snapshot, in a sequence like this: If the video doesn't exist in the database, it is created. A row is retrieved, heatmap, an array of floats stored in the binary form, is converted into a form more friendly for processing (in PHP). Values in the array are increased appropriately and the array is converted back. Row is changed via UPDATE query. So far the advantages can be summed up like this: First approach Stores data as floats, not as some magical binary array. Doesn't require transaction support, so doesn't require InnoDB, and we're using MyISAM for everything at the moment, so there won't be any need to mix storage engines. (only applies in my specific situation) Doesn't require a transaction WITH CONSISTENT SNAPSHOT. I don't know what are the performance penalties of those. I already implemented it and it works. (only applies in my specific situation) Second approach Is using a lot less storage space (the first approach is storing video ID 256 times and stores position for every segment of the video, not to mention primary key). Should scale better, because of InnoDB's per-row locking as opposed to MyISAM's table locking. Might generally work faster because there are a lot less requests being made. Easier to implement in code (although the other one is already implemented). So, what should I do? If it wasn't for the rest of our system using MyISAM consistently, I'd go with the second approach, but currently I'm leaning to the first one. But maybe there are some reasons to favour one approach or another?

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Sqlite returns error

- by ruruma

I'm trying to implement loading data from database and put it into different views. But log cat returns error, that it cannot find "_id" column. Can somebody help me with this? SqlHelper Code public class FiboSqlHelper extends SQLiteOpenHelper { public static final String TABLE_FILMDB = "FiboFilmTop250"; public static final String COLUMN_ID = "_id"; private static final String DATABASE_NAME = "FiboFilmDb250.sqlite"; private static final int DATABASE_VERSION = 1; public static final String COLUMN_TITLE = "Title"; public static final String COLUMN_RATING = "Rating"; public static final String COLUMN_GENRE = "Genre"; public static final String COLUMN_TIME = "Time"; public static final String COLUMN_PREMDATE = "PremDate"; public static final String COLUMN_PLOT = "Plot"; private static final String DATABASE_CREATE = "create table "+TABLE_FILMDB+"("+COLUMN_ID +" integer primary key autoincrement, " +COLUMN_TITLE+" text not null "+COLUMN_RATING+" text not null "+COLUMN_GENRE+" text not null "+COLUMN_TIME+" text not null "+COLUMN_PREMDATE+" text not null "+COLUMN_PLOT+" "+"text not null)"; public FiboSqlHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); // TODO Auto-generated constructor stub } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub db.execSQL(DATABASE_CREATE); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub Log.w(FiboSqlHelper.class.getName(), "Upgrading database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data"); db.execSQL("DROP TABLE IF EXISTS " + TABLE_FILMDB); onCreate(db); } }` SqlAdapterCode: public class FiboSqlAdapter { private SQLiteDatabase database; private FiboSqlHelper dbHelper; private String[] allColumns = {FiboSqlHelper.COLUMN_ID, FiboSqlHelper.COLUMN_TITLE, FiboSqlHelper.COLUMN_GENRE, FiboSqlHelper.COLUMN_PREMDATE, FiboSqlHelper.COLUMN_TIME, FiboSqlHelper.COLUMN_PLOT}; public FiboSqlAdapter (Context context){ dbHelper = new FiboSqlHelper(context); } public void open() throws SQLException { database = dbHelper.getWritableDatabase(); } public void close(){ dbHelper.close(); } public List<FilmDataEntity> getAllFilmData(){ List<FilmDataEntity> fDatas = new ArrayList<FilmDataEntity>(); Cursor cursor = database.query(FiboSqlHelper.TABLE_FILMDB, allColumns, null,null,null,null,null); cursor.moveToFirst(); while(!cursor.isAfterLast()){ FilmDataEntity fData = cursorToData(cursor); fDatas.add(fData); cursor.moveToNext(); } cursor.close(); return fDatas; } private FilmDataEntity cursorToData(Cursor cursor){ FilmDataEntity fData = new FilmDataEntity(); fData.setId(cursor.getLong(1)); fData.setTitle(cursor.getString(2)); fData.setRating(cursor.getString(6)); fData.setGenre(cursor.getString(4)); fData.setPremDate(cursor.getString(5)); fData.setShortcut(cursor.getString(8)); return fData; }} DataEntity: ` public class FilmDataEntity { private long id; private String title; private String rating; private String genre; private String premDate; private String shortcut; public String getShortcut() { return shortcut; } public void setShortcut(String shortcut) { this.shortcut = shortcut; } public String getGenre() { return genre; } public void setGenre(String genre) { this.genre = genre; } public String getPremDate() { return premDate; } public void setPremDate(String premDate) { this.premDate = premDate; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getRating() { return rating; } public void setRating(String rating) { this.rating = rating; } public long getId() { return id; } public void setId(long id) { this.id = id; } } Part from main activity: `List<FilmDataEntity> fE1; sqA = new FiboSqlAdapter(this); sqA.open(); fE1 = sqA.getAllFilmData(); `

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How Can I Set Up a "Where" Statement with a PHP Array

- by Ryan

Am I able to apply "where" statements to PHP arrays, similar to how I would be able to apply a "where" statement to a MySQL query? For example, suppose I have the following array: $recordset = array( array('host' => 1, 'country' => 'fr', 'year' => 2010, 'month' => 1, 'clicks' => 123, 'users' => 4), array('host' => 1, 'country' => 'fr', 'year' => 2010, 'month' => 2, 'clicks' => 134, 'users' => 5), array('host' => 1, 'country' => 'fr', 'year' => 2010, 'month' => 3, 'clicks' => 341, 'users' => 2), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 1, 'clicks' => 113, 'users' => 4), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 2, 'clicks' => 234, 'users' => 5), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 3, 'clicks' => 421, 'users' => 2), array('host' => 1, 'country' => 'es', 'year' => 2010, 'month' => 4, 'clicks' => 22, 'users' => 3), array('host' => 2, 'country' => 'es', 'year' => 2010, 'month' => 1, 'clicks' => 111, 'users' => 2), array('host' => 2, 'country' => 'es', 'year' => 2010, 'month' => 2, 'clicks' => 2, 'users' => 4), array('host' => 3, 'country' => 'es', 'year' => 2010, 'month' => 3, 'clicks' => 34, 'users' => 2), array('host' => 3, 'country' => 'es', 'year' => 2010, 'month' => 4, 'clicks' => 1, 'users' => 1),); How can I limit the output to only show the keys and values related to 'host' 1 and 'country' fr? Any help would be great.

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QUiLoader and ignored dynamic properties

- by Googie

I'm loading the .ui file, where one of the widgets (QComboBox) has a dynamic property (http://qt-project.org/doc/qt-5/properties.html#dynamic-properties). The UI file looks like this: <?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>PopulateScriptConfig</class> <widget class="QWidget" name="PopulateScriptConfig"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>400</width> <height>300</height> </rect> </property> <property name="windowTitle"> <string>Form</string> </property> <layout class="QVBoxLayout" name="verticalLayout"> <item> <widget class="QGroupBox" name="langGroup"> <property name="title"> <string>Language</string> </property> <layout class="QVBoxLayout" name="verticalLayout_3"> <item> <widget class="QComboBox" name="langCombo"> <property name="ScriptingLangCombo" stdset="0"> <bool>true</bool> </property> </widget> </item> </layout> </widget> </item> <item> <widget class="QGroupBox" name="codeGroup"> <property name="title"> <string>Implementation</string> </property> <layout class="QVBoxLayout" name="verticalLayout_2"> <item> <widget class="QPlainTextEdit" name="codeEdit"/> </item> </layout> </widget> </item> </layout> </widget> <resources/> <connections/> </ui> The important part is: <widget class="QComboBox" name="langCombo"> <property name="ScriptingLangCombo" stdset="0"> <bool>true</bool> </property> </widget> I'm loading the file with QUiLoader::load(). Note, that I have extended the QUiLoader class, but only to access createWidget() method, where I can query each widget like this: QWidget* UiLoader::createWidget(const QString& className, QWidget* parent, const QString& name) { QWidget* w = QUiLoader::createWidget(className, parent, name); qDebug() << w->dynamicPropertyNames(); return w; } As a result I see empty list displayed, so it seems like the dynamic property is completly ignored. Any ideas? P.S. I've made sure that I load correct file. 3 times.

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Doesn't get the output in Java Database Connectivity

- by Dooree

I'm working on Java Database Connectivity through Eclipse IDE. I built a database through Ubuntu Terminal, and I need to connect and work with it. However, when I tried to run the following code, I don't get any error, but the following output is showed, anybody knows why I don't get the output from the code ? //STEP 1. Import required packages import java.sql.*; public class FirstExample { // JDBC driver name and database URL static final String JDBC_DRIVER = "com.mysql.jdbc.Driver"; static final String DB_URL = "jdbc:mysql://localhost/EMP"; // Database credentials static final String USER = "username"; static final String PASS = "password"; public static void main(String[] args) { Connection conn = null; Statement stmt = null; try{ //STEP 2: Register JDBC driver Class.forName("com.mysql.jdbc.Driver"); //STEP 3: Open a connection System.out.println("Connecting to database..."); conn = DriverManager.getConnection(DB_URL,USER,PASS); //STEP 4: Execute a query System.out.println("Creating statement..."); stmt = conn.createStatement(); String sql; sql = "SELECT id, first, last, age FROM Employees"; ResultSet rs = stmt.executeQuery(sql); //STEP 5: Extract data from result set while(rs.next()){ //Retrieve by column name int id = rs.getInt("id"); int age = rs.getInt("age"); String first = rs.getString("first"); String last = rs.getString("last"); //Display values System.out.print("ID: " + id); System.out.print(", Age: " + age); System.out.print(", First: " + first); System.out.println(", Last: " + last); } //STEP 6: Clean-up environment rs.close(); stmt.close(); conn.close(); }catch(SQLException se){ //Handle errors for JDBC se.printStackTrace(); }catch(Exception e){ //Handle errors for Class.forName e.printStackTrace(); }finally{ //finally block used to close resources try{ if(stmt!=null) stmt.close(); }catch(SQLException se2){ }// nothing we can do try{ if(conn!=null) conn.close(); }catch(SQLException se){ se.printStackTrace(); }//end finally try }//end try System.out.println("Goodbye!"); }//end main }//end FirstExample <ConnectionProperties> <PropertyCategory name="Connection/Authentication"> <Property name="user" required="No" default="" sortOrder="-2147483647" since="all"> The user to connect as </Property> <Property name="password" required="No" default="" sortOrder="-2147483646" since="all"> The password to use when connecting </Property> <Property name="socketFactory" required="No" default="com.mysql.jdbc.StandardSocketFactory" sortOrder="4" since="3.0.3"> The name of the class that the driver should use for creating socket connections to the server. This class must implement the interface 'com.mysql.jdbc.SocketFactory' and have public no-args constructor. </Property> <Property name="connectTimeout" required="No" default="0" sortOrder="9" since="3.0.1"> Timeout for socket connect (in milliseconds), with 0 being no timeout. Only works on JDK-1.4 or newer. Defaults to '0'. </Property> ...

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Qt: TableWidget's ItemAt() acting weirdly

- by emredog

Hi, i'm working on a windows application, where in a dialog i query some data from Postgres, and manually show the output in a table widget. m_ui->tableWidget->setRowCount(joinedData.count()); for(int i=0; i<joinedData.count(); i++) //for each row { m_ui->tableWidget->setItem(i, 0, new QTableWidgetItem(joinedData[i].bobin.referenceNumber)); m_ui->tableWidget->setItem(i, 1, new QTableWidgetItem(QString::number(joinedData[i].bobin.width))); m_ui->tableWidget->setItem(i, 2, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getHole()))); m_ui->tableWidget->setItem(i, 3, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getLessThanZeroFive()))); m_ui->tableWidget->setItem(i, 4, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getZeroFive_to_zeroSeven()))); m_ui->tableWidget->setItem(i, 5, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getZeroFive_to_zeroSeven_repetitive()))); m_ui->tableWidget->setItem(i, 6, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getZeroSeven_to_Three()))); m_ui->tableWidget->setItem(i, 7, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getThree_to_five()))); m_ui->tableWidget->setItem(i, 8, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getMoreThanFive()))); } Also, based on row and column information, i paint some of these tablewidgetitems to some colors, but i don't think it's relevant. I reimplemented the QDialog's contextMenuEvent, to obtain the right clicked tableWidgetItem's row and column coordinates: void BobinFlanView::contextMenuEvent(QContextMenuEvent *event) { QMenu menu(m_ui->tableWidget); //standard actions menu.addAction(this->markInactiveAction); menu.addAction(this->markActiveAction); menu.addSeparator(); menu.addAction(this->exportAction); menu.addAction(this->exportAllAction); //obtain the rightClickedItem QTableWidgetItem* clickedItem = m_ui->tableWidget->itemAt(m_ui->tableWidget->mapFromGlobal(event->globalPos())); // if it's a colored one, add some more actions if (clickedItem && clickedItem->column()>1 && clickedItem->row()>0) { //this is a property, i'm keeping this for a later use this->lastRightClickedItem = clickedItem; //debug purpose: QMessageBox::information(this, "", QString("clickedItem = %1, %2").arg(clickedItem->row()).arg(clickedItem->column())); QMessageBox::information(this, "", QString("globalClick = %1, %2\ntransformedPos = %3, %4").arg(event->globalX()).arg(event->globalY()) .arg(m_ui->tableWidget->mapFromGlobal(event->globalPos()).x()).arg(m_ui->tableWidget->mapFromGlobal(event->globalPos()).y())); menu.addSeparator(); menu.addAction(this->changeSelectedToleranceToUygun); menu.addAction(this->changeSelectedToleranceToUyar); menu.addAction(this->changeSelectedToleranceToDurdurUyar); //... some other irrevelant 'enable/disable' activities menu.exec(event->globalPos()); } The problem is, when i right click on the same item i get the same global coordinates, but randomly different row-column information. For instance, the global pos is exactly 600,230 but row-column pair is randomly (5,3) and (4,3). I mean, what?! Also, when i click to an item from the last to rows (later than 13, i guess) will never go into condition "if (clickedItem && clickedItem-column()1 && clickedItem-row()0)", i think it's mainly because 'clickedItem' is null. I'll be more than glad to share any more information, or even the full cpp-h-ui trio in order to get help. Thanks a lot.

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WTSQuerySessionInformation returning empty strings

- by Benj

I've written a program which should query the Terminal Services API and print out some state information about the sessions running on a terminal services box. I'm using the WTSQuerySessionInformation function to do this and it's returning some data but most of the data seems to be missing... Does anyone know why? Here's my program: void WTSGetString( HANDLE serverHandle, DWORD sessionid, WTS_INFO_CLASS command, wchar_t* commandStr) { DWORD bytesReturned = 0; LPTSTR pData = NULL; if (WTSQuerySessionInformation(serverHandle, sessionid, command, &pData, &bytesReturned)) { wprintf(L"\tWTSQuerySessionInformationW - session %d - %s returned \"%s\"\n", sessionid, commandStr, pData); } else { wprintf(L"\tWTSQuerySessionInformationW - session %d - %s failed - error=%d - ", sessionid, commandStr, GetLastError()); printLastError(NULL, GetLastError()); } WTSFreeMemory(pData); } void ExtractFromWTS( HANDLE serverHandle, DWORD sessionid ) { WTSGetString(serverHandle, sessionid, WTSInitialProgram, L"WTSInitialProgram"); WTSGetString(serverHandle, sessionid, WTSApplicationName, L"WTSApplicationName"); WTSGetString(serverHandle, sessionid, WTSWorkingDirectory, L"WTSWorkingDirectory"); WTSGetString(serverHandle, sessionid, WTSOEMId, L"WTSOEMId"); WTSGetString(serverHandle, sessionid, WTSSessionId, L"WTSSessionId"); WTSGetString(serverHandle, sessionid, WTSUserName, L"WTSUserName"); WTSGetString(serverHandle, sessionid, WTSWinStationName, L"WTSWinStationName"); WTSGetString(serverHandle, sessionid, WTSDomainName, L"WTSDomainName"); WTSGetString(serverHandle, sessionid, WTSConnectState, L"WTSConnectState"); WTSGetString(serverHandle, sessionid, WTSClientBuildNumber, L"WTSClientBuildNumber"); WTSGetString(serverHandle, sessionid, WTSClientName, L"WTSClientName"); WTSGetString(serverHandle, sessionid, WTSClientDirectory, L"WTSClientDirectory"); WTSGetString(serverHandle, sessionid, WTSClientProductId, L"WTSClientProductId"); WTSGetString(serverHandle, sessionid, WTSClientHardwareId, L"WTSClientHardwareId"); WTSGetString(serverHandle, sessionid, WTSClientAddress, L"WTSClientAddress"); WTSGetString(serverHandle, sessionid, WTSClientDisplay, L"WTSClientDisplay"); WTSGetString(serverHandle, sessionid, WTSClientProtocolType, L"WTSClientProtocolType"); } int _tmain(int argc, _TCHAR* argv[]) { PWTS_SESSION_INFOW ppSessionInfo = 0; DWORD pCount; if(!WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &ppSessionInfo, &pCount)) { printLastError(L"WTSEnumerateSessions", GetLastError()); return 1; } wprintf(L"%d WTS sessions found on host\n", pCount); for (unsigned int i=0; i<pCount; i++) { wprintf(L"> session=%d, stationName = %s\n", ppSessionInfo[i].SessionId, ppSessionInfo[i].pWinStationName); ExtractFromWTS(WTS_CURRENT_SERVER_HANDLE, ppSessionInfo[i].SessionId); LPWSTR sessionstr = new wchar_t[200]; wsprintf(sessionstr, L"%d", ppSessionInfo[i].SessionId); } return 0; } And here's the output: C:\Users\Administrator\Desktop>ObtainWTSStartShell.exe empserver1 4 WTS sessions found on host > session=0, stationName = Services WTSQuerySessionInformationW - session 0 - WTSInitialProgram failed - error=87 - The paramete r is incorrect. WTSQuerySessionInformationW - session 0 - WTSApplicationName failed - error=87 - The paramet er is incorrect. WTSQuerySessionInformationW - session 0 - WTSWorkingDirectory returned "" WTSQuerySessionInformationW - session 0 - WTSOEMId returned "" WTSQuerySessionInformationW - session 0 - WTSSessionId returned "" WTSQuerySessionInformationW - session 0 - WTSUserName returned "" WTSQuerySessionInformationW - session 0 - WTSWinStationName returned "Services" WTSQuerySessionInformationW - session 0 - WTSDomainName returned "" WTSQuerySessionInformationW - session 0 - WTSConnectState returned "?" WTSQuerySessionInformationW - session 0 - WTSClientBuildNumber returned "" WTSQuerySessionInformationW - session 0 - WTSClientName returned "" WTSQuerySessionInformationW - session 0 - WTSClientDirectory returned "" WTSQuerySessionInformationW - session 0 - WTSClientProductId returned "" WTSQuerySessionInformationW - session 0 - WTSClientHardwareId returned "" WTSQuerySessionInformationW - session 0 - WTSClientAddress returned "" WTSQuerySessionInformationW - session 0 - WTSClientDisplay returned "" WTSQuerySessionInformationW - session 0 - WTSClientProtocolType returned "" GetShellProcessNameFromUserPolicy - Error: Unable to open policy key - returned [2] GetShellProcessName succeseded - explorer.exe > session=1, stationName = Console WTSQuerySessionInformationW - session 1 - WTSInitialProgram returned "" WTSQuerySessionInformationW - session 1 - WTSApplicationName returned "" WTSQuerySessionInformationW - session 1 - WTSWorkingDirectory returned "" WTSQuerySessionInformationW - session 1 - WTSOEMId returned "" WTSQuerySessionInformationW - session 1 - WTSSessionId returned "?" WTSQuerySessionInformationW - session 1 - WTSUserName returned "" WTSQuerySessionInformationW - session 1 - WTSWinStationName returned "Console" WTSQuerySessionInformationW - session 1 - WTSDomainName returned "" WTSQuerySessionInformationW - session 1 - WTSConnectState returned "?" WTSQuerySessionInformationW - session 1 - WTSClientBuildNumber returned "" WTSQuerySessionInformationW - session 1 - WTSClientName returned "" WTSQuerySessionInformationW - session 1 - WTSClientDirectory returned "" WTSQuerySessionInformationW - session 1 - WTSClientProductId returned "" WTSQuerySessionInformationW - session 1 - WTSClientHardwareId returned "" WTSQuerySessionInformationW - session 1 - WTSClientAddress returned "" WTSQuerySessionInformationW - session 1 - WTSClientDisplay returned "?" WTSQuerySessionInformationW - session 1 - WTSClientProtocolType returned "" GetShellProcessNameFromUserPolicy - Error: Unable to open policy key - returned [2] GetShellProcessName succeseded - explorer.exe > session=3, stationName = RDP-Tcp#0 WTSQuerySessionInformationW - session 3 - WTSInitialProgram returned "" WTSQuerySessionInformationW - session 3 - WTSApplicationName returned "" WTSQuerySessionInformationW - session 3 - WTSWorkingDirectory returned "" WTSQuerySessionInformationW - session 3 - WTSOEMId returned "" WTSQuerySessionInformationW - session 3 - WTSSessionId returned "?" WTSQuerySessionInformationW - session 3 - WTSUserName returned "Administrator" WTSQuerySessionInformationW - session 3 - WTSWinStationName returned "RDP-Tcp#0" WTSQuerySessionInformationW - session 3 - WTSDomainName returned "EMPSERVER1" WTSQuerySessionInformationW - session 3 - WTSConnectState returned "" WTSQuerySessionInformationW - session 3 - WTSClientBuildNumber returned "?" WTSQuerySessionInformationW - session 3 - WTSClientName returned "APWADEV03" WTSQuerySessionInformationW - session 3 - WTSClientDirectory returned "C:\Windows\System32\m stscax.dll" WTSQuerySessionInformationW - session 3 - WTSClientProductId returned "?" WTSQuerySessionInformationW - session 3 - WTSClientHardwareId returned "" WTSQuerySessionInformationW - session 3 - WTSClientAddress returned "?" WTSQuerySessionInformationW - session 3 - WTSClientDisplay returned "?" WTSQuerySessionInformationW - session 3 - WTSClientProtocolType returned "?" GetShellProcessNameFromUserPolicy - Error: Unable to open policy key - returned [2] GetShellProcessName succeseded - explorer.exe > session=65536, stationName = RDP-Tcp WTSQuerySessionInformationW - session 65536 - WTSInitialProgram returned "" WTSQuerySessionInformationW - session 65536 - WTSApplicationName returned "" WTSQuerySessionInformationW - session 65536 - WTSWorkingDirectory returned "" WTSQuerySessionInformationW - session 65536 - WTSOEMId returned "" WTSQuerySessionInformationW - session 65536 - WTSSessionId returned "" WTSQuerySessionInformationW - session 65536 - WTSUserName returned "" WTSQuerySessionInformationW - session 65536 - WTSWinStationName returned "RDP-Tcp" WTSQuerySessionInformationW - session 65536 - WTSDomainName returned "" WTSQuerySessionInformationW - session 65536 - WTSConnectState returned "?" WTSQuerySessionInformationW - session 65536 - WTSClientBuildNumber returned "" WTSQuerySessionInformationW - session 65536 - WTSClientName returned "" WTSQuerySessionInformationW - session 65536 - WTSClientDirectory returned "" WTSQuerySessionInformationW - session 65536 - WTSClientProductId returned "" WTSQuerySessionInformationW - session 65536 - WTSClientHardwareId returned "" WTSQuerySessionInformationW - session 65536 - WTSClientAddress returned "" WTSQuerySessionInformationW - session 65536 - WTSClientDisplay returned "" WTSQuerySessionInformationW - session 65536 - WTSClientProtocolType returned "" GetShellProcessNameFromUserPolicy - Error: Unable to open policy key - returned [2] GetShellProcessName succeseded - explorer.exe As you can see, some of the data looks valid, but not all....

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Configuring UCM cache to check for external Content Server changes

- by Martin Deh

Recently, I was involved in a customer scenario where they were modifying the Content Server's contributor data files directly through Content Server. This operation of course is completely supported. However, since the contributor data file was modified through the "backdoor", a running WebCenter Spaces page, which also used the same data file, would not get the updates immediately. This was due to two reasons. The first reason is that the Spaces page was using Content Presenter to display the contents of the data file. The second reason is that the Spaces application was using the "cached" version of the data file. Fortunately, there is a way to configure cache so backdoor changes can be picked up more quickly and automatically. First a brief overview of Content Presenter. The Content Presenter task flow enables WebCenter Spaces users with Page-Edit permissions to precisely customize the selection and presentation of content in a WebCenter Spaces application. With Content Presenter, you can select a single item of content, contents under a folder, a list of items, or query for content, and then select a Content Presenter based template to render the content on a page in a Spaces application. In addition to displaying the folders and the files in a Content Server, Content Presenter integrates with Oracle Site Studio to allow you to create, access, edit, and display Site Studio contributor data files (Content Server Document) in either a Site Studio region template or in a custom Content Presenter display template. More information about creating Content Presenter Display Template can be found in the OFM Developers Guide for WebCenter Portal. The easiest way to configure the cache is to modify the WebCenter Spaces Content Server service connection setting through Enterprise Manager. From here, under the Cache Details, there is a section to set the Cache Invalidation Interval. Basically, this enables the cache to be monitored by the cache "sweeper" utility. The cache sweeper queries for changes in the Content Server, and then "marks" the object in cache as "dirty". This causes the application in turn to get a new copy of the document from the Content Server that replaces the cached version. By default the initial value for the Cache Invalidation Interval is set to 0 (minutes). This basically means that the sweeper is OFF. To turn the sweeper ON, just set a value (in minutes). The mininal value that can be set is 2 (minutes): Just a note. In some instances, once the value of the Cache Invalidation Interval has been set (and saved) in the Enterprise Manager UI, it becomes "sticky" and the interval value cannot be set back to 0. The good news is that this value can also be updated throught a WLST command. The WLST command to run is as follows: setJCRContentServerConnection(appName, name, [socketType, url, serverHost, serverPort, keystoreLocation, keystorePassword, privateKeyAlias, privateKeyPassword, webContextRoot, clientSecurityPolicy, cacheInvalidationInterval, binaryCacheMaxEntrySize, adminUsername, adminPassword, extAppId, timeout, isPrimary, server, applicationVersion]) One way to get the required information for executing the command is to use the listJCRContentServerConnections('webcenter',verbose=true) command. For example, this is the sample output from the execution: ------------------ UCM ------------------ Connection Name: UCM Connection Type: JCR External Appliction ID: Timeout: (not set) CIS Socket Type: socket CIS Server Hostname: webcenter.oracle.local CIS Server Port: 4444 CIS Keystore Location: CIS Private Key Alias: CIS Web URL: Web Server Context Root: /cs Client Security Policy: Admin User Name: sysadmin Cache Invalidation Interval: 2 Binary Cache Maximum Entry Size: 1024 The Documents primary connection is "UCM" From this information, the completed setJCRContentServerConnection would be: setJCRContentServerConnection(appName='webcenter',name='UCM', socketType='socket', serverHost='webcenter.oracle.local', serverPort='4444', webContextRoot='/cs', cacheInvalidationInterval='0', binaryCacheMaxEntrySize='1024',adminUsername='sysadmin',isPrimary=1) Note: The Spaces managed server must be restarted for the change to take effect. More information about using WLST for WebCenter can be found here. Once the sweeper is turned ON, only cache objects that have been changed will be invalidated. To test this out, I will go through a simple scenario. The first thing to do is configure the Content Server so it can monitor and report on events. Log into the Content Server console application, and under the Administration menu item, select System Audit Information. Note: If your console is using the left menu display option, the Administration link will be located there. Under the Tracing Sections Information, add in only "system" and "requestaudit" in the Active Sections. Check Full Verbose Tracing, check Save, then click the Update button. Once this is done, select the View Server Output menu option. This will change the browser view to display the log. This is all that is needed to configure the Content Server. For example, the following is the View Server Output with the cache invalidation interval set to 2(minutes) Note the time stamp: requestaudit/6 08.30 09:52:26.001 IdcServer-68 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.016933999955654144(secs) requestaudit/6 08.30 09:52:26.010 IdcServer-69 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.006134999915957451(secs) requestaudit/6 08.30 09:52:26.014 IdcServer-70 GET_DOCUMENT_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.004271999932825565(secs) ... other trace info ... requestaudit/6 08.30 09:54:26.002 IdcServer-71 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.020323999226093292(secs) requestaudit/6 08.30 09:54:26.011 IdcServer-72 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.017928000539541245(secs) requestaudit/6 08.30 09:54:26.017 IdcServer-73 GET_DOCUMENT_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.010185999795794487(secs) Now that the tracing logs are reporting correctly, the next step is set up the Spaces app to test the sweeper. I will use 2 different pages that will use Content Presenter task flows. Each task flow will use a different custom Content Presenter display template, and will be assign 2 different contributor data files (document that will be in the cache). The pages at run time appear as follows: Initially, when the Space pages containing the content is loaded in the browser for the first time, you can see the tracing information in the Content Server output viewer. requestaudit/6 08.30 11:51:12.030 IdcServer-129 CLEAR_SERVER_OUTPUT [dUser=weblogic] 0.029171999543905258(secs) requestaudit/6 08.30 11:51:12.101 IdcServer-130 GET_SERVER_OUTPUT [dUser=weblogic] 0.025721000507473946(secs) requestaudit/6 08.30 11:51:26.592 IdcServer-131 VCR_GET_DOCUMENT_BY_NAME [dID=919][dDocName=DF_UCMCACHETESTER][dDocTitle=DF_UCMCacheTester][dUser=weblogic][RevisionSelectionMethod=LatestReleased][IsJava=1] 0.21525299549102783(secs) requestaudit/6 08.30 11:51:27.117 IdcServer-132 VCR_GET_CONTENT_TYPES [dUser=sysadmin][IsJava=1] 0.5059549808502197(secs) requestaudit/6 08.30 11:51:27.146 IdcServer-133 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.03360399976372719(secs) requestaudit/6 08.30 11:51:27.169 IdcServer-134 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.008806000463664532(secs) requestaudit/6 08.30 11:51:27.204 IdcServer-135 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.013265999965369701(secs) requestaudit/6 08.30 11:51:27.384 IdcServer-136 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.18119299411773682(secs) requestaudit/6 08.30 11:51:27.533 IdcServer-137 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.1519480049610138(secs) requestaudit/6 08.30 11:51:27.634 IdcServer-138 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.10827399790287018(secs) requestaudit/6 08.30 11:51:27.687 IdcServer-139 VCR_GET_CONTENT_TYPE [dUser=sysadmin][IsJava=1] 0.059702999889850616(secs) requestaudit/6 08.30 11:51:28.271 IdcServer-140 GET_USER_PERMISSIONS [dUser=weblogic][IsJava=1] 0.006703000050038099(secs) requestaudit/6 08.30 11:51:28.285 IdcServer-141 GET_ENVIRONMENT [dUser=sysadmin][IsJava=1] 0.010893999598920345(secs) requestaudit/6 08.30 11:51:30.433 IdcServer-142 GET_SERVER_OUTPUT [dUser=weblogic] 0.017318999394774437(secs) requestaudit/6 08.30 11:51:41.837 IdcServer-143 VCR_GET_DOCUMENT_BY_NAME [dID=508][dDocName=113_ES][dDocTitle=Landing Home][dUser=weblogic][RevisionSelectionMethod=LatestReleased][IsJava=1] 0.15937699377536774(secs) requestaudit/6 08.30 11:51:42.781 IdcServer-144 GET_FILE [dID=326][dDocName=WEBCENTERORACL000315][dDocTitle=Duke][dUser=anonymous][RevisionSelectionMethod=LatestReleased][dSecurityGroup=Public][xCollectionID=0] 0.16288499534130096(secs) The highlighted sections show where the 2 data files DF_UCMCACHETESTER (P1 page) and 113_ES (P2 page) were called by the (Spaces) VCR connection to the Content Server. The most important line to notice is the VCR_GET_DOCUMENT_BY_NAME invocation. On subsequent refreshes of these 2 pages, you will notice (after you refresh the Content Server's View Server Output) that there are no further traces of the same VCR_GET_DOCUMENT_BY_NAME invocations. This is because the pages are getting the documents from the cache. The next step is to go through the "backdoor" and change one of the documents through the Content Server console. This operation can be done by first locating the data file document, and from the Content Information page, select Edit Data File menu option. This invokes the Site Studio Contributor, where the modifications can be made. Refreshing the Content Server View Server Output, the tracing displays the operations perform on the document. requestaudit/6 08.30 11:56:59.972 IdcServer-255 SS_CHECKOUT_BY_NAME [dID=922][dDocName=DF_UCMCACHETESTER][dUser=weblogic][dSecurityGroup=Public] 0.05558200180530548(secs) requestaudit/6 08.30 11:57:00.065 IdcServer-256 SS_GET_CONTRIBUTOR_CONFIG [dID=922][dDocName=DF_UCMCACHETESTER][dDocTitle=DF_UCMCacheTester][dUser=weblogic][dSecurityGroup=Public][xCollectionID=0] 0.08632399886846542(secs) requestaudit/6 08.30 11:57:00.470 IdcServer-259 DOC_INFO_BY_NAME [dID=922][dDocName=DF_UCMCACHETESTER][dDocTitle=DF_UCMCacheTester][dUser=weblogic][dSecurityGroup=Public][xCollectionID=0] 0.02268899977207184(secs) requestaudit/6 08.30 11:57:10.177 IdcServer-264 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.007652000058442354(secs) requestaudit/6 08.30 11:57:10.181 IdcServer-263 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.01868399977684021(secs) requestaudit/6 08.30 11:57:10.187 IdcServer-265 GET_DOCUMENT_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.009367000311613083(secs) (internal)/6 08.30 11:57:26.118 IdcServer-266 File to be removed: /oracle/app/admin/domains/webcenter/ucm/cs/vault/~temp/703253295.xml (internal)/6 08.30 11:57:26.121 IdcServer-266 File to be removed: /oracle/app/admin/domains/webcenter/ucm/cs/vault/~temp/703253295.xml requestaudit/6 08.30 11:57:26.122 IdcServer-266 SS_SET_ELEMENT_DATA [dID=923][dDocName=DF_UCMCACHETESTER][dDocTitle=DF_UCMCacheTester][dUser=weblogic][dSecurityGroup=Public][xCollectionID=0][StatusCode=0][StatusMessage=Successfully checked in content item 'DF_UCMCACHETESTER'.] 0.3765290081501007(secs) requestaudit/6 08.30 11:57:30.710 IdcServer-267 DOC_INFO_BY_NAME [dID=923][dDocName=DF_UCMCACHETESTER][dDocTitle=DF_UCMCacheTester][dUser=weblogic][dSecurityGroup=Public][xCollectionID=0] 0.07942699640989304(secs) requestaudit/6 08.30 11:57:30.733 IdcServer-268 SS_GET_CONTRIBUTOR_STRINGS [dUser=weblogic] 0.0044570001773536205(secs) After a few moments and refreshing the P1 page, the updates has been applied. Note: The refresh time may very, since the Cache Invalidation Interval (set to 2 minutes) is not determined by when changes happened. The sweeper just runs every 2 minutes. Refreshing the Content Server View Server Output, the tracing displays the important information. requestaudit/6 08.30 11:59:10.171 IdcServer-270 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.00952600035816431(secs) requestaudit/6 08.30 11:59:10.179 IdcServer-271 GET_FOLDER_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.011118999682366848(secs) requestaudit/6 08.30 11:59:10.182 IdcServer-272 GET_DOCUMENT_HISTORY_REPORT [dUser=sysadmin][IsJava=1] 0.007447000127285719(secs) requestaudit/6 08.30 11:59:16.885 IdcServer-273 VCR_GET_DOCUMENT_BY_NAME [dID=923][dDocName=DF_UCMCACHETESTER][dDocTitle=DF_UCMCacheTester][dUser=weblogic][RevisionSelectionMethod=LatestReleased][IsJava=1] 0.0786449983716011(secs) After the specifed interval time the sweeper is invoked, which is noted by the GET_ ... calls. Since the history has noted the change, the next call is to the VCR_GET_DOCUMENT_BY_NAME to retrieve the new version of the (modifed) data file. Navigating back to the P2 page, and viewing the server output, there are no further VCR_GET_DOCUMENT_BY_NAME to retrieve the data file. This simply means that this data file was just retrieved from the cache. Upon further review of the server output, we can see that there was only 1 request for the VCR_GET_DOCUMENT_BY_NAME: requestaudit/6 08.30 12:08:00.021 Audit Request Monitor Request Audit Report over the last 120 Seconds for server webcenteroraclelocal16200**** requestaudit/6 08.30 12:08:00.021 Audit Request Monitor -Num Requests 8 Errors 0 Reqs/sec. 0.06666944175958633 Avg. Latency (secs) 0.02762500010430813 Max Thread Count 2 requestaudit/6 08.30 12:08:00.021 Audit Request Monitor 1 Service VCR_GET_DOCUMENT_BY_NAME Total Elapsed Time (secs) 0.09200000017881393 Num requests 1 Num errors 0 Avg. Latency (secs) 0.09200000017881393 requestaudit/6 08.30 12:08:00.021 Audit Request Monitor 2 Service GET_PERSONALIZED_JAVASCRIPT Total Elapsed Time (secs) 0.054999999701976776 Num requests 1 Num errors 0 Avg. Latency (secs) 0.054999999701976776 requestaudit/6 08.30 12:08:00.021 Audit Request Monitor 3 Service GET_FOLDER_HISTORY_REPORT Total Elapsed Time (secs) 0.028999999165534973 Num requests 2 Num errors 0 Avg. Latency (secs) 0.014499999582767487 requestaudit/6 08.30 12:08:00.021 Audit Request Monitor 4 Service GET_SERVER_OUTPUT Total Elapsed Time (secs) 0.017999999225139618 Num requests 1 Num errors 0 Avg. Latency (secs) 0.017999999225139618 requestaudit/6 08.30 12:08:00.021 Audit Request Monitor 5 Service GET_FILE Total Elapsed Time (secs) 0.013000000268220901 Num requests 1 Num errors 0 Avg. Latency (secs) 0.013000000268220901 requestaudit/6 08.30 12:08:00.021 Audit Request Monitor ****End Audit Report*****

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NHibernate, and odd "Session is Closed!" errors

- by Sekhat

Note: Now that I've typed this out, I have to apologize for the super long question, however, I think all the code and information presented here is in some way relevant. Okay, I'm getting odd "Session Is Closed" errors, at random points in my ASP.NET webforms application. Today, however, it's finally happening in the same place over and over again. I am near certain that nothing is disposing or closing the session in my code, as the bits of code that use are well contained away from all other code as you'll see below. I'm also using ninject as my IOC, which may / may not be important. Okay, so, First my SessionFactoryProvider and SessionProvider classes: SessionFactoryProvider public class SessionFactoryProvider : IDisposable { ISessionFactory sessionFactory; public ISessionFactory GetSessionFactory() { if (sessionFactory == null) sessionFactory = Fluently.Configure() .Database( MsSqlConfiguration.MsSql2005.ConnectionString(p => p.FromConnectionStringWithKey("QoiSqlConnection"))) .Mappings(m => m.FluentMappings.AddFromAssemblyOf<JobMapping>()) .BuildSessionFactory(); return sessionFactory; } public void Dispose() { if (sessionFactory != null) sessionFactory.Dispose(); } } SessionProvider public class SessionProvider : IDisposable { ISessionFactory sessionFactory; ISession session; public SessionProvider(SessionFactoryProvider sessionFactoryProvider) { this.sessionFactory = sessionFactoryProvider.GetSessionFactory(); } public ISession GetCurrentSession() { if (session == null) session = sessionFactory.OpenSession(); return session; } public void Dispose() { if (session != null) { session.Dispose(); } } } These two classes are wired up with Ninject as so: NHibernateModule public class NHibernateModule : StandardModule { public override void Load() { Bind<SessionFactoryProvider>().ToSelf().Using<SingletonBehavior>(); Bind<SessionProvider>().ToSelf().Using<OnePerRequestBehavior>(); } } and as far as I can tell work as expected. Now my BaseDao<T> class: BaseDao public class BaseDao<T> : IDao<T> where T : EntityBase { private SessionProvider sessionManager; protected ISession session { get { return sessionManager.GetCurrentSession(); } } public BaseDao(SessionProvider sessionManager) { this.sessionManager = sessionManager; } public T GetBy(int id) { return session.Get<T>(id); } public void Save(T item) { using (var transaction = session.BeginTransaction()) { session.SaveOrUpdate(item); transaction.Commit(); } } public void Delete(T item) { using (var transaction = session.BeginTransaction()) { session.Delete(item); transaction.Commit(); } } public IList<T> GetAll() { return session.CreateCriteria<T>().List<T>(); } public IQueryable<T> Query() { return session.Linq<T>(); } } Which is bound in Ninject like so: DaoModule public class DaoModule : StandardModule { public override void Load() { Bind(typeof(IDao<>)).To(typeof(BaseDao<>)) .Using<OnePerRequestBehavior>(); } } Now the web request that is causing this is when I'm saving an object, it didn't occur till I made some model changes today, however the changes to my model has not changed the data access code in anyway. Though it changed a few NHibernate mappings (I can post these too if anyone is interested) From as far as I can tell, BaseDao<SomeClass>.Get is called then BaseDao<SomeOtherClass>.Get is called then BaseDao<TypeImTryingToSave>.Save is called. it's the third call at the line in Save() using (var transaction = session.BeginTransaction()) that fails with "Session is Closed!" or rather the exception: Session is closed! Object name: 'ISession'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ObjectDisposedException: Session is closed! Object name: 'ISession'. And indeed following through on the Debugger shows the third time the session is requested from the SessionProvider it is indeed closed and not connected. I have verified that Dispose on my SessionFactoryProvider and on my SessionProvider are called at the end of the request and not before the Save call is made on my Dao. So now I'm a little stuck. A few things pop to mind. Am I doing anything obviously wrong? Does NHibernate ever close sessions without me asking to? Any workarounds or ideas on what I might do? Thanks in advance

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Reading php generated XML in flash?

- by AdonisSMU

Here is part 1 of our problem (Loading a dynamically generated XML file as PHP in Flash). Now we were able to get Flash to read the XML file, but we can only see the Flash render correctly when tested(test movie) from the actual Flash program. However, when we upload our files online to preview the Flash does not render correctly, missing some vital information(thumbnails, titles, video etc..). Here is a link to the Flash file using a manually created XML file (The Flash renders correctly): http://www.gaban.com/stackoverflow/TEN_xml.html Here is the path to the manually created XML file: http://dev.touchstorm.com/ten_hpn_admin2/client_user2.xml Now here is the link to the Flash file using the PHP generated XML file (Renders incomplete): http://www.gaban.com/stackoverflow/TEN_php.html Path to the PHP generated file (exactly the same as the manually created one): http://dev.touchstorm.com/ten_hpn_admin2/client_user.php?id=2 Additional information: The SWF file exists on Domain 1 The XML & PHP file both exists on Domain 2 And the HTML file with the embed code lies on Domain 3 Wondering if this could be a crossdomain issue? We have one of those files in place on Domain 1 & 2 where we have access too, however for Domain 3 we can't have a crossdomain.xml file there. Here is the PHP code: $xml = new XMLWriter(); $xml->openMemory(); $xml->setIndent(true); $xml->setIndentString("\t"); $xml->startDocument(); $xml->startElement('data'); $xml->startElement('config'); $xml->startElement('hex'); $xml->writeCData('0x' . $widget_profile['background_color']); $xml->endElement(); $xml->startElement('width'); $xml->writeCData($widget_profile['width']); $xml->endElement(); $xml->startElement('height'); $xml->writeCData($widget_profile['height']); $xml->endElement(); $xml->startElement('fullscreen'); $xml->writeCData('false'); $xml->endElement(); $xml->startElement('special'); $xml->writeCData('false'); $xml->endElement(); $xml->startElement('specialName'); $xml->writeCData('Tools & Offers'); $xml->endElement(); $xml->startElement('specialLink'); $xml->writeCData('http://bettycrocker.com'); $xml->endElement(); $xml->startElement('client'); $xml->writeCData($widget_profile['site_url']); $xml->endElement(); $xml->endElement(); if (count($widget_content) > 0) { foreach ($widget_content as $tab) { $xml->startElement('tab'); $xml->writeAttribute('id', $tab['tabname']); if (count($tab['video']) > 0) { foreach ($tab['video'] as $video) { $video_sql = "select VID, flvdoname, title from video where VID='" . $video . "'"; $video_result = $howdini->query($video_sql); if ($video_result->rowCount() > 0) { foreach ($video_result as $video_row) { $video_row['flvdoname'] = substr($video_row['flvdoname'], 35, -4); $xml->startElement('vid'); $xml->writeAttribute('flv', $video_row['flvdoname']); $xml->writeAttribute('thumb', 'http://www.howdini.com/thumb/' . $video_row['VID'] . '.jpg'); $xml->writeAttribute('title', $video_row['title']); $xml->endElement(); } } } } $xml->endElement(); } } $xml->endElement(); $xml->endDocument(); header('Content-Type: text/xml; charset=UTF-8'); echo $xml->flush(); Thanks in advance for any answers! EDIT: I have included the change and now Firebug sees the XML. Now it's just not seeing the swf file but I can see the swf file in other parts of the page.

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How can I eager-load a child collection mapped to a non-primary key in NHibernate 2.1.2?

- by David Rubin

Hi, I have two objects with a many-to-many relationship between them, as follows: public class LeftHandSide { public LeftHandSide() { Name = String.Empty; Rights = new HashSet<RightHandSide>(); } public int Id { get; set; } public string Name { get; set; } public ICollection<RightHandSide> Rights { get; set; } } public class RightHandSide { public RightHandSide() { OtherProp = String.Empty; Lefts = new HashSet<LeftHandSide>(); } public int Id { get; set; } public string OtherProp { get; set; } public ICollection<LeftHandSide> Lefts { get; set; } } and I'm using a legacy database, so my mappings look like: Notice that LeftHandSide and RightHandSide are associated by a different column than RightHandSide's primary key. <class name="LeftHandSide" table="[dbo].[lefts]" lazy="false"> <id name="Id" column="ID" unsaved-value="0"> <generator class="identity" /> </id> <property name="Name" not-null="true" /> <set name="Rights" table="[dbo].[lefts2rights]"> <key column="leftId" />  <many-to-many class="RightHandSide" column="rightProp" property-ref="OtherProp" /> </set> </class> <class name="RightHandSide" table="[dbo].[rights]" lazy="false"> <id name="Id" column="id" unsaved-value="0"> <generator class="identity" /> </id> <property name="OtherProp" column="otherProp" /> <set name="Lefts" table="[dbo].[lefts2rights]">  <key column="rightProp" property-ref="OtherProp" /> <many-to-many class="LeftHandSide" column="leftId" /> </set> </class> The problem comes when I go to do a query: LeftHandSide lhs = _session.CreateCriteria<LeftHandSide>() .Add(Expression.IdEq(13)) .UniqueResult<LeftHandSide>(); works just fine. But LeftHandSide lhs = _session.CreateCriteria<LeftHandSide>() .Add(Expression.IdEq(13)) .SetFetchMode("Rights", FetchMode.Join) .UniqueResult<LeftHandSide>(); throws an exception (see below). Interestingly, RightHandSide rhs = _session.CreateCriteria<RightHandSide>() .Add(Expression.IdEq(127)) .SetFetchMode("Lefts", FetchMode.Join) .UniqueResult<RightHandSide>(); seems to be perfectly fine as well. NHibernate.Exceptions.GenericADOException Message: Error performing LoadByUniqueKey[SQL: SQL not available] Source: NHibernate StackTrace: c:\opt\nhibernate\2.1.2\source\src\NHibernate\Type\EntityType.cs(563,0): at NHibernate.Type.EntityType.LoadByUniqueKey(String entityName, String uniqueKeyPropertyName, Object key, ISessionImplementor session) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Type\EntityType.cs(428,0): at NHibernate.Type.EntityType.ResolveIdentifier(Object value, ISessionImplementor session, Object owner) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Type\EntityType.cs(300,0): at NHibernate.Type.EntityType.NullSafeGet(IDataReader rs, String[] names, ISessionImplementor session, Object owner) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Persister\Collection\AbstractCollectionPersister.cs(695,0): at NHibernate.Persister.Collection.AbstractCollectionPersister.ReadElement(IDataReader rs, Object owner, String[] aliases, ISessionImplementor session) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Collection\Generic\PersistentGenericSet.cs(54,0): at NHibernate.Collection.Generic.PersistentGenericSet`1.ReadFrom(IDataReader rs, ICollectionPersister role, ICollectionAliases descriptor, Object owner) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(706,0): at NHibernate.Loader.Loader.ReadCollectionElement(Object optionalOwner, Object optionalKey, ICollectionPersister persister, ICollectionAliases descriptor, IDataReader rs, ISessionImplementor session) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(385,0): at NHibernate.Loader.Loader.ReadCollectionElements(Object[] row, IDataReader resultSet, ISessionImplementor session) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(326,0): at NHibernate.Loader.Loader.GetRowFromResultSet(IDataReader resultSet, ISessionImplementor session, QueryParameters queryParameters, LockMode[] lockModeArray, EntityKey optionalObjectKey, IList hydratedObjects, EntityKey[] keys, Boolean returnProxies) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(453,0): at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(236,0): at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(1649,0): at NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(1568,0): at NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor session, QueryParameters queryParameters) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Loader.cs(1562,0): at NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet`1 querySpaces, IType[] resultTypes) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Loader\Criteria\CriteriaLoader.cs(73,0): at NHibernate.Loader.Criteria.CriteriaLoader.List(ISessionImplementor session) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Impl\SessionImpl.cs(1936,0): at NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList results) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Impl\CriteriaImpl.cs(246,0): at NHibernate.Impl.CriteriaImpl.List(IList results) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Impl\CriteriaImpl.cs(237,0): at NHibernate.Impl.CriteriaImpl.List() c:\opt\nhibernate\2.1.2\source\src\NHibernate\Impl\CriteriaImpl.cs(398,0): at NHibernate.Impl.CriteriaImpl.UniqueResult() c:\opt\nhibernate\2.1.2\source\src\NHibernate\Impl\CriteriaImpl.cs(263,0): at NHibernate.Impl.CriteriaImpl.UniqueResult[T]() D:\proj\CMS3\branches\nh_auth\DomainModel2Tests\Authorization\TempTests.cs(46,0): at CMS.DomainModel.Authorization.TempTests.Test1() Inner Exception System.Collections.Generic.KeyNotFoundException Message: The given key was not present in the dictionary. Source: mscorlib StackTrace: at System.ThrowHelper.ThrowKeyNotFoundException() at System.Collections.Generic.Dictionary`2.get_Item(TKey key) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Persister\Entity\AbstractEntityPersister.cs(2047,0): at NHibernate.Persister.Entity.AbstractEntityPersister.GetAppropriateUniqueKeyLoader(String propertyName, IDictionary`2 enabledFilters) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Persister\Entity\AbstractEntityPersister.cs(2037,0): at NHibernate.Persister.Entity.AbstractEntityPersister.LoadByUniqueKey(String propertyName, Object uniqueKey, ISessionImplementor session) c:\opt\nhibernate\2.1.2\source\src\NHibernate\Type\EntityType.cs(552,0): at NHibernate.Type.EntityType.LoadByUniqueKey(String entityName, String uniqueKeyPropertyName, Object key, ISessionImplementor session) I'm using NHibernate 2.1.2 and I've been debugging into the NHibernate source, but I'm coming up empty. Any suggestions? Thanks so much!

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Setting up and using Bing Translate API Service for Machine Translation

- by Rick Strahl

Last week I spent quite a bit of time trying to set up the Bing Translate API service. I can honestly say this was one of the most screwed up developer experiences I've had in a long while - specifically related to the byzantine sign up process that Microsoft has in place. Not only is it nearly impossible to find decent documentation on the required signup process, some of the links in the docs are just plain wrong, and some of the account pages you need to access the actual account information once signed up are not linked anywhere from the administration UI. To make things even harder is the fact that the APIs changed a while back, with a completely new authentication scheme that's described and not directly linked documentation topic also made for a very frustrating search experience. It's a bummer that this is the case too, because the actual API itself is easy to use and works very well - fast and reasonably accurate (as accurate as you can expect machine translation to be). But the sign up process is a pain in the ass doubtlessly leaving many people giving up in frustration. In this post I'll try to hit all the points needed to set up to use the Bing Translate API in one place since such a document seems to be missing from Microsoft. Hopefully the API folks at Microsoft will get their shit together and actually provide this sort of info on their site… Signing Up The first step required is to create a Windows Azure MarketPlace account. Go to: https://datamarket.azure.com/ Sign in with your Windows Live Id If you don't have an account you will be taken to a registration page which you have to fill out. Follow the links and complete the registration. Once you're signed in you can start adding services. Click on the Data Link on the main page Select Microsoft Translator from the list This adds the Microsoft Bing Translator to your services. Pricing The page shows the pricing matrix and the free service which provides 2 megabytes for translations a month for free. Prices go up steeply from there. Pricing is determined by actual bytes of the result translations used. Max translations are 1000 characters so at minimum this means you get around 2000 translations a month for free. However most translations are probable much less so you can expect larger number of translations to go through. For testing or low volume translations this should be just fine. Once signed up there are no further instructions and you're left in limbo on the MS site. Register your Application Once you've created the Data association with Translator the next step is registering your application. To do this you need to access your developer account. Go to https://datamarket.azure.com/developer/applications/register Provide a ClientId, which is effectively the unique string identifier for your application (not your customer id!) Provide your name The client secret was auto-created and this becomes your 'password' For the redirect url provide any https url: https://microsoft.com works Give this application a description of your choice so you can identify it in the list of apps Now, once you've registered your application, keep track of the ClientId and ClientSecret - those are the two keys you need to authenticate before you can call the Translate API. Oddly the applications page is hidden from the Azure Portal UI. I couldn't find a direct link from anywhere on the site back to this page where I can examine my developer application keys. To find them you can go to: https://datamarket.azure.com/developer/applications You can come back here to look at your registered applications and pick up the ClientID and ClientSecret. Fun eh? But we're now ready to actually call the API and do some translating. Using the Bing Translate API The good news is that after this signup hell, using the API is pretty straightforward. To use the translation API you'll need to actually use two services: You need to call an authentication API service first, before you can call the actual translator API. These two APIs live on different domains, and the authentication API returns JSON data while the translator service returns XML. So much for consistency. Authentication The first step is authentication. The service uses oAuth authentication with a bearer token that has to be passed to the translator API. The authentication call retrieves the oAuth token that you can then use with the translate API call. The bearer token has a short 10 minute life time, so while you can cache it for successive calls, the token can't be cached for long periods. This means for Web backend requests you typically will have to authenticate each time unless you build a more elaborate caching scheme that takes the timeout into account (perhaps using the ASP.NET Cache object). For low volume operations you can probably get away with simply calling the auth API for every translation you do. To call the Authentication API use code like this:/// /// Retrieves an oAuth authentication token to be used on the translate /// API request. The result string needs to be passed as a bearer token /// to the translate API. /// /// You can find client ID and Secret (or register a new one) at: /// https://datamarket.azure.com/developer/applications/ /// /// The client ID of your application /// The client secret or password /// public string GetBingAuthToken(string clientId = null, string clientSecret = null) { string authBaseUrl = https://datamarket.accesscontrol.windows.net/v2/OAuth2-13; if (string.IsNullOrEmpty(clientId) || string.IsNullOrEmpty(clientSecret)) { ErrorMessage = Resources.Resources.Client_Id_and_Client_Secret_must_be_provided; return null; } var postData = string.Format("grant_type=client_credentials&client_id={0}" + "&client_secret={1}" + "&scope=http://api.microsofttranslator.com", HttpUtility.UrlEncode(clientId), HttpUtility.UrlEncode(clientSecret)); // POST Auth data to the oauth API string res, token; try { var web = new WebClient(); web.Encoding = Encoding.UTF8; res = web.UploadString(authBaseUrl, postData); } catch (Exception ex) { ErrorMessage = ex.GetBaseException().Message; return null; } var ser = new JavaScriptSerializer(); var auth = ser.Deserialize<BingAuth>(res); if (auth == null) return null; token = auth.access_token; return token; } private class BingAuth { public string token_type { get; set; } public string access_token { get; set; } } This code basically takes the client id and secret and posts it at the oAuth endpoint which returns a JSON string. Here I use the JavaScript serializer to deserialize the JSON into a custom object I created just for deserialization. You can also use JSON.NET and dynamic deserialization if you are already using JSON.NET in your app in which case you don't need the extra type. In my library that houses this component I don't, so I just rely on the built in serializer. The auth method returns a long base64 encoded string which can be used as a bearer token in the translate API call. Translation Once you have the authentication token you can use it to pass to the translate API. The auth token is passed as an Authorization header and the value is prefixed with a 'Bearer ' prefix for the string. Here's what the simple Translate API call looks like:/// /// Uses the Bing API service to perform translation /// Bing can translate up to 1000 characters. /// /// Requires that you provide a CLientId and ClientSecret /// or set the configuration values for these two. /// /// More info on setup: /// http://www.west-wind.com/weblog/ /// /// Text to translate /// Two letter culture name /// Two letter culture name /// Pass an access token retrieved with GetBingAuthToken. /// If not passed the default keys from .config file are used if any /// public string TranslateBing(string text, string fromCulture, string toCulture, string accessToken = null) { string serviceUrl = "http://api.microsofttranslator.com/V2/Http.svc/Translate"; if (accessToken == null) { accessToken = GetBingAuthToken(); if (accessToken == null) return null; } string res; try { var web = new WebClient(); web.Headers.Add("Authorization", "Bearer " + accessToken); string ct = "text/plain"; string postData = string.Format("?text={0}&from={1}&to={2}&contentType={3}", HttpUtility.UrlEncode(text), fromCulture, toCulture, HttpUtility.UrlEncode(ct)); web.Encoding = Encoding.UTF8; res = web.DownloadString(serviceUrl + postData); } catch (Exception e) { ErrorMessage = e.GetBaseException().Message; return null; } // result is a single XML Element fragment var doc = new XmlDocument(); doc.LoadXml(res); return doc.DocumentElement.InnerText; } The first of this code deals with ensuring the auth token exists. You can either pass the token into the method manually or let the method automatically retrieve the auth code on its own. In my case I'm using this inside of a Web application and in that situation I simply need to re-authenticate every time as there's no convenient way to manage the lifetime of the auth cookie. The auth token is added as an Authorization HTTP header prefixed with 'Bearer ' and attached to the request. The text to translate, the from and to language codes and a result format are passed on the query string of this HTTP GET request against the Translate API. The translate API returns an XML string which contains a single element with the translated string. Using the Wrapper Methods It should be pretty obvious how to use these two methods but here are a couple of test methods that demonstrate the two usage scenarios:[TestMethod] public void TranslateBingWithAuthTest() { var translate = new TranslationServices(); string clientId = DbResourceConfiguration.Current.BingClientId; string clientSecret = DbResourceConfiguration.Current.BingClientSecret; string auth = translate.GetBingAuthToken(clientId, clientSecret); Assert.IsNotNull(auth); string text = translate.TranslateBing("Hello World we're back home!", "en", "de",auth); Assert.IsNotNull(text, translate.ErrorMessage); Console.WriteLine(text); } [TestMethod] public void TranslateBingIntegratedTest() { var translate = new TranslationServices(); string text = translate.TranslateBing("Hello World we're back home!","en","de"); Assert.IsNotNull(text, translate.ErrorMessage); Console.WriteLine(text); } Other API Methods The Translate API has a number of methods available and this one is the simplest one but probably also the most common one that translates a single string. You can find additional methods for this API here: http://msdn.microsoft.com/en-us/library/ff512419.aspx Soap and AJAX APIs are also available and documented on MSDN: http://msdn.microsoft.com/en-us/library/dd576287.aspx These links will be your starting points for calling other methods in this API. Dual Interface I've talked about my database driven localization provider here in the past, and it's for this tool that I added the Bing localization support. Basically I have a localization administration form that allows me to translate individual strings right out of the UI, using both Google and Bing APIs: As you can see in this example, the results from Google and Bing can vary quite a bit - in this case Google is stumped while Bing actually generated a valid translation. At other times it's the other way around - it's pretty useful to see multiple translations at the same time. Here I can choose from one of the values and driectly embed them into the translated text field. Lost in Translation There you have it. As I mentioned using the API once you have all the bureaucratic crap out of the way calling the APIs is fairly straight forward and reasonably fast, even if you have to call the Auth API for every call. Hopefully this post will help out a few of you trying to navigate the Microsoft bureaucracy, at least until next time Microsoft upends everything and introduces new ways to sign up again. Until then - happy translating… Related Posts Translation method Source on Github Translating with Google Translate without Google API Keys Creating a data-driven ASP.NET Resource Provider© Rick Strahl, West Wind Technologies, 2005-2013Posted in Localization ASP.NET .NET Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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JMS Step 7 - How to Write to an AQ JMS (Advanced Queueing JMS) Queue from a BPEL Process

- by John-Brown.Evans

JMS Step 7 - How to Write to an AQ JMS (Advanced Queueing JMS) Queue from a BPEL Process ol{margin:0;padding:0} .jblist{list-style-type:disc;margin:0;padding:0;padding-left:0pt;margin-left:36pt} .c4_7{vertical-align:top;width:468pt;border-style:solid;border-color:#000000;border-width:1pt;padding:5pt 5pt 5pt 5pt} .c3_7{vertical-align:top;width:234pt;border-style:solid;border-color:#000000;border-width:1pt;padding:0pt 5pt 0pt 5pt} .c6_7{vertical-align:top;width:156pt;border-style:solid;border-color:#000000;border-width:1pt;padding:5pt 5pt 5pt 5pt} .c16_7{background-color:#ffffff;padding:0pt 0pt 0pt 0pt} .c0_7{height:11pt;direction:ltr} .c9_7{color:#1155cc;text-decoration:underline} .c17_7{color:inherit;text-decoration:inherit} .c5_7{direction:ltr} .c18_7{background-color:#ffff00} .c2_7{background-color:#f3f3f3} .c14_7{height:0pt} .c8_7{text-indent:36pt} .c11_7{text-align:center} .c7_7{font-style:italic} .c1_7{font-family:"Courier New"} .c13_7{line-height:1.0} .c15_7{border-collapse:collapse} .c12_7{font-weight:bold} .c10_7{font-size:8pt} .title{padding-top:24pt;line-height:1.15;text-align:left;color:#000000;font-size:36pt;font-family:"Arial";font-weight:bold;padding-bottom:6pt} .subtitle{padding-top:18pt;line-height:1.15;text-align:left;color:#666666;font-style:italic;font-size:24pt;font-family:"Georgia";padding-bottom:4pt} li{color:#000000;font-size:10pt;font-family:"Arial"} p{color:#000000;font-size:10pt;margin:0;font-family:"Arial"} h1{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:24pt;font-family:"Arial";font-weight:normal} h2{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:18pt;font-family:"Arial";font-weight:normal} h3{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:14pt;font-family:"Arial";font-weight:normal} h4{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:12pt;font-family:"Arial";font-weight:normal} h5{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:11pt;font-family:"Arial";font-weight:normal} h6{padding-top:0pt;line-height:1.15;text-align:left;color:#888;font-size:10pt;font-family:"Arial";font-weight:normal} This post continues the series of JMS articles which demonstrate how to use JMS queues in a SOA context. The previous posts were: JMS Step 1 - How to Create a Simple JMS Queue in Weblogic Server 11g JMS Step 2 - Using the QueueSend.java Sample Program to Send a Message to a JMS Queue JMS Step 3 - Using the QueueReceive.java Sample Program to Read a Message from a JMS Queue JMS Step 4 - How to Create an 11g BPEL Process Which Writes a Message Based on an XML Schema to a JMS Queue JMS Step 5 - How to Create an 11g BPEL Process Which Reads a Message Based on an XML Schema from a JMS Queue JMS Step 6 - How to Set Up an AQ JMS (Advanced Queueing JMS) for SOA Purposes This example demonstrates how to write a simple message to an Oracle AQ via the the WebLogic AQ JMS functionality from a BPEL process and a JMS adapter. If you have not yet reviewed the previous posts, please do so first, especially the JMS Step 6 post, as this one references objects created there. 1. Recap and Prerequisites In the previous example, we created an Oracle Advanced Queue (AQ) and some related JMS objects in WebLogic Server to be able to access it via JMS. Here are the objects which were created and their names and JNDI names: Database Objects Name Type AQJMSUSER Database User MyQueueTable Advanced Queue (AQ) Table UserQueue Advanced Queue WebLogic Server Objects Object Name Type JNDI Name aqjmsuserDataSource Data Source jdbc/aqjmsuserDataSource AqJmsModule JMS System Module AqJmsForeignServer JMS Foreign Server AqJmsForeignServerConnectionFactory JMS Foreign Server Connection Factory AqJmsForeignServerConnectionFactory AqJmsForeignDestination AQ JMS Foreign Destination queue/USERQUEUE eis/aqjms/UserQueue Connection Pool eis/aqjms/UserQueue 2 . Create a BPEL Composite with a JMS Adapter Partner Link This step requires that you have a valid Application Server Connection defined in JDeveloper, pointing to the application server on which you created the JMS Queue and Connection Factory. You can create this connection in JDeveloper under the Application Server Navigator. Give it any name and be sure to test the connection before completing it. This sample will write a simple XML message to the AQ JMS queue via the JMS adapter, based on the following XSD file, which consists of a single string element: stringPayload.xsd <?xml version="1.0" encoding="windows-1252" ?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.example.org" targetNamespace="http://www.example.org" elementFormDefault="qualified"> <xsd:element name="exampleElement" type="xsd:string"> </xsd:element> </xsd:schema> The following steps are all executed in JDeveloper. The SOA project will be created inside a JDeveloper Application. If you do not already have an application to contain the project, you can create a new one via File > New > General > Generic Application. Give the application any name, for example JMSTests and, when prompted for a project name and type, call the project JmsAdapterWriteAqJms and select SOA as the project technology type. If you already have an application, continue below. Create a SOA Project Create a new project and select SOA Tier > SOA Project as its type. Name it JmsAdapterWriteAqJms . When prompted for the composite type, choose Composite With BPEL Process. When prompted for the BPEL Process, name it JmsAdapterWriteAqJms too and choose Synchronous BPEL Process as the template. This will create a composite with a BPEL process and an exposed SOAP service. Double-click the BPEL process to open and begin editing it. You should see a simple BPEL process with a Receive and Reply activity. As we created a default process without an XML schema, the input and output variables are simple strings. Create an XSD File An XSD file is required later to define the message format to be passed to the JMS adapter. In this step, we create a simple XSD file, containing a string variable and add it to the project. First select the xsd item in the left-hand navigation tree to ensure that the XSD file is created under that item. Select File > New > General > XML and choose XML Schema. Call it stringPayload.xsd and when the editor opens, select the Source view. then replace the contents with the contents of the stringPayload.xsd example above and save the file. You should see it under the XSD item in the navigation tree. Create a JMS Adapter Partner Link We will create the JMS adapter as a service at the composite level. If it is not already open, double-click the composite.xml file in the navigator to open it. From the Component Palette, drag a JMS adapter over onto the right-hand swim lane, under External References. This will start the JMS Adapter Configuration Wizard. Use the following entries: Service Name: JmsAdapterWrite Oracle Enterprise Messaging Service (OEMS): Oracle Advanced Queueing AppServer Connection: Use an existing application server connection pointing to the WebLogic server on which the connection factory created earlier is located. You can use the “+” button to create a connection directly from the wizard, if you do not already have one. Adapter Interface > Interface: Define from operation and schema (specified later) Operation Type: Produce Message Operation Name: Produce_message Produce Operation Parameters Destination Name: Wait for the list to populate. (Only foreign servers are listed here, because Oracle Advanced Queuing was selected earlier, in step 3) . Select the foreign server destination created earlier, AqJmsForeignDestination (queue) . This will automatically populate the Destination Name field with the name of the foreign destination, queue/USERQUEUE . JNDI Name: The JNDI name to use for the JMS connection. This is the JNDI name of the connection pool created in the WebLogic Server.JDeveloper does not verify the value entered here. If you enter a wrong value, the JMS adapter won’t find the queue and you will get an error message at runtime. In our example, this is the value eis/aqjms/UserQueue Messages URL: We will use the XSD file we created earlier, stringPayload.xsd to define the message format for the JMS adapter. Press the magnifying glass icon to search for schema files. Expand Project Schema Files > stringPayload.xsd and select exampleElement : string . Press Next and Finish, which will complete the JMS Adapter configuration. Wire the BPEL Component to the JMS Adapter In this step, we link the BPEL process/component to the JMS adapter. From the composite.xml editor, drag the right-arrow icon from the BPEL process to the JMS adapter’s in-arrow. This completes the steps at the composite level. 3. Complete the BPEL Process Design Invoke the JMS Adapter Open the BPEL component by double-clicking it in the design view of the composite.xml. This will display the BPEL process in the design view. You should see the JmsAdapterWrite partner link under one of the two swim lanes. We want it in the right-hand swim lane. If JDeveloper displays it in the left-hand lane, right-click it and choose Display > Move To Opposite Swim Lane. An Invoke activity is required in order to invoke the JMS adapter. Drag an Invoke activity between the Receive and Reply activities. Drag the right-hand arrow from the Invoke activity to the JMS adapter partner link. This will open the Invoke editor. The correct default values are entered automatically and are fine for our purposes. We only need to define the input variable to use for the JMS adapter. By pressing the green “+” symbol, a variable of the correct type can be auto-generated, for example with the name Invoke1_Produce_Message_InputVariable. Press OK after creating the variable. Assign Variables Drag an Assign activity between the Receive and Invoke activities. We will simply copy the input variable to the JMS adapter and, for completion, so the process has an output to print, again to the process’s output variable. Double-click the Assign activity and create two Copy rules: for the first, drag Variables > inputVariable > payload > client:process > client:input_string to Invoke1_Produce_Message_InputVariable > body > ns2:exampleElement for the second, drag the same input variable to outputVariable > payload > client:processResponse > client:result This will create two copy rules, similar to the following: Press OK. This completes the BPEL and Composite design. 4. Compile and Deploy the Composite Compile the process by pressing the Make or Rebuild icons or by right-clicking the project name in the navigator and selecting Make... or Rebuild... If the compilation is successful, deploy it to the SOA server connection defined earlier. (Right-click the project name in the navigator, select Deploy to Application Server, choose the application server connection, choose the partition on the server (usually default) and press Finish. You should see the message ---- Deployment finished. ---- in the Deployment frame, if the deployment was successful. 5. Test the Composite Execute a Test Instance In a browser, log in to the Enterprise Manager 11g Fusion Middleware Control (EM) for your SOA installation. Navigate to SOA > soa-infra (soa_server1) > default (or wherever you deployed your composite) and click on JmsAdapterWriteAqJms [1.0] , then press the Test button. Enter any string into the text input field, for example “Test message from JmsAdapterWriteAqJms” then press Test Web Service. If the instance is successful, you should see the same text you entered in the Response payload frame. Monitor the Advanced Queue The test message will be written to the advanced queue created at the top of this sample. To confirm it, log in to the database as AQJMSUSER and query the MYQUEUETABLE database table. For example, from a shell window with SQL*Plus sqlplus aqjmsuser/aqjmsuser SQL> SELECT user_data FROM myqueuetable; which will display the message contents, for example Similarly, you can use the JDeveloper Database Navigator to view the contents. Use a database connection to the AQJMSUSER and in the navigator, expand Queues Tables and select MYQUEUETABLE. Select the Data tab and scroll to the USER_DATA column to view its contents. This concludes this example. The following post will be the last one in this series. In it, we will learn how to read the message we just wrote using a BPEL process and AQ JMS. Best regards John-Brown Evans Oracle Technology Proactive Support Delivery

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