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• TOTD #166: Using NoSQL database in your Java EE 6 Applications on GlassFish - MongoDB for now!

  - by arungupta

  The Java EE 6 platform includes Java Persistence API to work with RDBMS. The JPA specification defines a comprehensive API that includes, but not restricted to, how a database table can be mapped to a POJO and vice versa, provides mechanisms how a PersistenceContext can be injected in a @Stateless bean and then be used for performing different operations on the database table and write typesafe queries. There are several well known advantages of RDBMS but the NoSQL movement has gained traction over past couple of years. The NoSQL databases are not intended to be a replacement for the mainstream RDBMS. As Philosophy of NoSQL explains, NoSQL database was designed for casual use where all the features typically provided by an RDBMS are not required. The name "NoSQL" is more of a category of databases that is more known for what it is not rather than what it is. The basic principles of NoSQL database are: No need to have a pre-defined schema and that makes them a schema-less database. Addition of new properties to existing objects is easy and does not require ALTER TABLE. The unstructured data gives flexibility to change the format of data any time without downtime or reduced service levels. Also there are no joins happening on the server because there is no structure and thus no relation between them. Scalability and performance is more important than the entire set of functionality typically provided by an RDBMS. This set of databases provide eventual consistency and/or transactions restricted to single items but more focus on CRUD. Not be restricted to SQL to access the information stored in the backing database. Designed to scale-out (horizontal) instead of scale-up (vertical). This is important knowing that databases, and everything else as well, is moving into the cloud. RBDMS can scale-out using sharding but requires complex management and not for the faint of heart. Unlike RBDMS which require a separate caching tier, most of the NoSQL databases comes with integrated caching. Designed for less management and simpler data models lead to lower administration as well. There are primarily three types of NoSQL databases: Key-Value stores (e.g. Cassandra and Riak) Document databases (MongoDB or CouchDB) Graph databases (Neo4J) You may think NoSQL is panacea but as I mentioned above they are not meant to replace the mainstream databases and here is why: RDBMS have been around for many years, very stable, and functionally rich. This is something CIOs and CTOs can bet their money on without much worry. There is a reason 98% of Fortune 100 companies run Oracle :-) NoSQL is cutting edge, brings excitement to developers, but enterprises are cautious about them. Commercial databases like Oracle are well supported by the backing enterprises in terms of providing support resources on a global scale. There is a full ecosystem built around these commercial databases providing training, performance tuning, architecture guidance, and everything else. NoSQL is fairly new and typically backed by a single company not able to meet the scale of these big enterprises. NoSQL databases are good for CRUDing operations but business intelligence is extremely important for enterprises to stay competitive. RDBMS provide extensive tooling to generate this data but that was not the original intention of NoSQL databases and is lacking in that area. Generating any meaningful information other than CRUDing require extensive programming. Not suited for complex transactions such as banking systems or other highly transactional applications requiring 2-phase commit. SQL cannot be used with NoSQL databases and writing simple queries can be involving. Enough talking, lets take a look at some code. This blog has published multiple blogs on how to access a RDBMS using JPA in a Java EE 6 application. This Tip Of The Day (TOTD) will show you can use MongoDB (a document-oriented database) with a typical 3-tier Java EE 6 application. Lets get started! The complete source code of this project can be downloaded here. Download MongoDB for your platform from here (1.8.2 as of this writing) and start the server as: arun@ArunUbuntu:~/tools/mongodb-linux-x86_64-1.8.2/bin$./mongod./mongod --help for help and startup optionsSun Jun 26 20:41:11 [initandlisten] MongoDB starting : pid=11210port=27017 dbpath=/data/db/ 64-bit Sun Jun 26 20:41:11 [initandlisten] db version v1.8.2, pdfile version4.5Sun Jun 26 20:41:11 [initandlisten] git version:433bbaa14aaba6860da15bd4de8edf600f56501bSun Jun 26 20:41:11 [initandlisten] build sys info: Linuxbs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 2017:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41Sun Jun 26 20:41:11 [initandlisten] waiting for connections on port 27017Sun Jun 26 20:41:11 [websvr] web admin interface listening on port 28017 The default directory for the database is /data/db and needs to be created as: sudo mkdir -p /data/db/sudo chown `id -u` /data/db You can specify a different directory using "--dbpath" option. Refer to Quickstart for your specific platform. Using NetBeans, create a Java EE 6 project and make sure to enable CDI and add JavaServer Faces framework. Download MongoDB Java Driver (2.6.3 of this writing) and add it to the project library by selecting "Properties", "LIbraries", "Add Library...", creating a new library by specifying the location of the JAR file, and adding the library to the created project. Edit the generated "index.xhtml" such that it looks like: <h1>Add a new movie</h1><h:form> Name: <h:inputText value="#{movie.name}" size="20"/><br/> Year: <h:inputText value="#{movie.year}" size="6"/><br/> Language: <h:inputText value="#{movie.language}" size="20"/><br/> <h:commandButton actionListener="#{movieSessionBean.createMovie}" action="show" title="Add" value="submit"/></h:form> This page has a simple HTML form with three text boxes and a submit button. The text boxes take name, year, and language of a movie and the submit button invokes the "createMovie" method of "movieSessionBean" and then render "show.xhtml". Create "show.xhtml" ("New" -> "Other..." -> "Other" -> "XHTML File") such that it looks like: <head> <title><h1>List of movies</h1></title> </head> <body> <h:form> <h:dataTable value="#{movieSessionBean.movies}" var="m" > <h:column><f:facet name="header">Name</f:facet>#{m.name}</h:column> <h:column><f:facet name="header">Year</f:facet>#{m.year}</h:column> <h:column><f:facet name="header">Language</f:facet>#{m.language}</h:column> </h:dataTable> </h:form> This page shows the name, year, and language of all movies stored in the database so far. The list of movies is returned by "movieSessionBean.movies" property. Now create the "Movie" class such that it looks like: import com.mongodb.BasicDBObject;import com.mongodb.BasicDBObject;import com.mongodb.DBObject;import javax.enterprise.inject.Model;import javax.validation.constraints.Size;/** * @author arun */@Modelpublic class Movie { @Size(min=1, max=20) private String name; @Size(min=1, max=20) private String language; private int year; // getters and setters for "name", "year", "language" public BasicDBObject toDBObject() { BasicDBObject doc = new BasicDBObject(); doc.put("name", name); doc.put("year", year); doc.put("language", language); return doc; } public static Movie fromDBObject(DBObject doc) { Movie m = new Movie(); m.name = (String)doc.get("name"); m.year = (int)doc.get("year"); m.language = (String)doc.get("language"); return m; } @Override public String toString() { return name + ", " + year + ", " + language; }} Other than the usual boilerplate code, the key methods here are "toDBObject" and "fromDBObject". These methods provide a conversion from "Movie" -> "DBObject" and vice versa. The "DBObject" is a MongoDB class that comes as part of the mongo-2.6.3.jar file and which we added to our project earlier.  The complete javadoc for 2.6.3 can be seen here. Notice, this class also uses Bean Validation constraints and will be honored by the JSF layer. Finally, create "MovieSessionBean" stateless EJB with all the business logic such that it looks like: package org.glassfish.samples;import com.mongodb.BasicDBObject;import com.mongodb.DB;import com.mongodb.DBCollection;import com.mongodb.DBCursor;import com.mongodb.DBObject;import com.mongodb.Mongo;import java.net.UnknownHostException;import java.util.ArrayList;import java.util.List;import javax.annotation.PostConstruct;import javax.ejb.Stateless;import javax.inject.Inject;import javax.inject.Named;/** * @author arun */@Stateless@Namedpublic class MovieSessionBean { @Inject Movie movie; DBCollection movieColl; @PostConstruct private void initDB() throws UnknownHostException { Mongo m = new Mongo(); DB db = m.getDB("movieDB"); movieColl = db.getCollection("movies"); if (movieColl == null) { movieColl = db.createCollection("movies", null); } } public void createMovie() { BasicDBObject doc = movie.toDBObject(); movieColl.insert(doc); } public List<Movie> getMovies() { List<Movie> movies = new ArrayList(); DBCursor cur = movieColl.find(); System.out.println("getMovies: Found " + cur.size() + " movie(s)"); for (DBObject dbo : cur.toArray()) { movies.add(Movie.fromDBObject(dbo)); } return movies; }} The database is initialized in @PostConstruct. Instead of a working with a database table, NoSQL databases work with a schema-less document. The "Movie" class is the document in our case and stored in the collection "movies". The collection allows us to perform query functions on all movies. The "getMovies" method invokes "find" method on the collection which is equivalent to the SQL query "select * from movies" and then returns a List<Movie>. Also notice that there is no "persistence.xml" in the project. Right-click and run the project to see the output as: Enter some values in the text box and click on enter to see the result as: If you reached here then you've successfully used MongoDB in your Java EE 6 application, congratulations! Some food for thought and further play ... SQL to MongoDB mapping shows mapping between traditional SQL -> Mongo query language. Tutorial shows fun things you can do with MongoDB. Try the interactive online shell  The cookbook provides common ways of using MongoDB In terms of this project, here are some tasks that can be tried: Encapsulate database management in a JPA persistence provider. Is it even worth it because the capabilities are going to be very different ? MongoDB uses "BSonObject" class for JSON representation, add @XmlRootElement on a POJO and how a compatible JSON representation can be generated. This will make the fromXXX and toXXX methods redundant.

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• Creating a Dynamic DataRow for easier DataRow Syntax

  - by Rick Strahl

  I've been thrown back into an older project that uses DataSets and DataRows as their entity storage model. I have several applications internally that I still maintain that run just fine (and I sometimes wonder if this wasn't easier than all this ORM crap we deal with with 'newer' improved technology today - but I disgress) but use this older code. For the most part DataSets/DataTables/DataRows are abstracted away in a pseudo entity model, but in some situations like queries DataTables and DataRows are still surfaced to the business layer. Here's an example. Here's a business object method that runs dynamic query and the code ends up looping over the result set using the ugly DataRow Array syntax:public int UpdateAllSafeTitles() { int result = this.Execute("select pk, title, safetitle from " + Tablename + " where EntryType=1", "TPks"); if (result < 0) return result; result = 0; foreach (DataRow row in this.DataSet.Tables["TPks"].Rows) { string title = row["title"] as string; string safeTitle = row["safeTitle"] as string; int pk = (int)row["pk"]; string newSafeTitle = this.GetSafeTitle(title); if (newSafeTitle != safeTitle) { this.ExecuteNonQuery("update " + this.Tablename + " set safeTitle=@safeTitle where pk=@pk", this.CreateParameter("@safeTitle",newSafeTitle), this.CreateParameter("@pk",pk) ); result++; } } return result; } The problem with looping over DataRow objecs is two fold: The array syntax is tedious to type and not real clear to look at, and explicit casting is required in order to do anything useful with the values. I've highlighted the place where this matters. Using the DynamicDataRow class I'll show in a minute this code can be changed to look like this:public int UpdateAllSafeTitles() { int result = this.Execute("select pk, title, safetitle from " + Tablename + " where EntryType=1", "TPks"); if (result < 0) return result; result = 0; foreach (DataRow row in this.DataSet.Tables["TPks"].Rows) { dynamic entry = new DynamicDataRow(row); string newSafeTitle = this.GetSafeTitle(entry.title); if (newSafeTitle != entry.safeTitle) { this.ExecuteNonQuery("update " + this.Tablename + " set safeTitle=@safeTitle where pk=@pk", this.CreateParameter("@safeTitle",newSafeTitle), this.CreateParameter("@pk",entry.pk) ); result++; } } return result; } The code looks much a bit more natural and describes what's happening a little nicer as well. Well, using the new dynamic features in .NET it's actually quite easy to implement the DynamicDataRow class. Creating your own custom Dynamic Objects .NET 4.0 introduced the Dynamic Language Runtime (DLR) and opened up a whole bunch of new capabilities for .NET applications. The dynamic type is an easy way to avoid Reflection and directly access members of 'dynamic' or 'late bound' objects at runtime. There's a lot of very subtle but extremely useful stuff that dynamic does (especially for COM Interop scenearios) but in its simplest form it often allows you to do away with manual Reflection at runtime. In addition you can create DynamicObject implementations that can perform  custom interception of member accesses and so allow you to provide more natural access to more complex or awkward data structures like the DataRow that I use as an example here. Bascially you can subclass DynamicObject and then implement a few methods (TryGetMember, TrySetMember, TryInvokeMember) to provide the ability to return dynamic results from just about any data structure using simple property/method access. In the code above, I created a custom DynamicDataRow class which inherits from DynamicObject and implements only TryGetMember and TrySetMember. Here's what simple class looks like:/// <summary> /// This class provides an easy way to turn a DataRow /// into a Dynamic object that supports direct property /// access to the DataRow fields. /// /// The class also automatically fixes up DbNull values /// (null into .NET and DbNUll to DataRow) /// </summary> public class DynamicDataRow : DynamicObject { /// <summary> /// Instance of object passed in /// </summary> DataRow DataRow; /// <summary> /// Pass in a DataRow to work off /// </summary> /// <param name="instance"></param> public DynamicDataRow(DataRow dataRow) { DataRow = dataRow; } /// <summary> /// Returns a value from a DataRow items array. /// If the field doesn't exist null is returned. /// DbNull values are turned into .NET nulls. /// /// </summary> /// <param name="binder"></param> /// <param name="result"></param> /// <returns></returns> public override bool TryGetMember(GetMemberBinder binder, out object result) { result = null; try { result = DataRow[binder.Name]; if (result == DBNull.Value) result = null; return true; } catch { } result = null; return false; } /// <summary> /// Property setter implementation tries to retrieve value from instance /// first then into this object /// </summary> /// <param name="binder"></param> /// <param name="value"></param> /// <returns></returns> public override bool TrySetMember(SetMemberBinder binder, object value) { try { if (value == null) value = DBNull.Value; DataRow[binder.Name] = value; return true; } catch {} return false; } } To demonstrate the basic features here's a short test: [TestMethod] [ExpectedException(typeof(RuntimeBinderException))] public void BasicDataRowTests() { DataTable table = new DataTable("table"); table.Columns.Add( new DataColumn() { ColumnName = "Name", DataType=typeof(string) }); table.Columns.Add( new DataColumn() { ColumnName = "Entered", DataType=typeof(DateTime) }); table.Columns.Add(new DataColumn() { ColumnName = "NullValue", DataType = typeof(string) }); DataRow row = table.NewRow(); DateTime now = DateTime.Now; row["Name"] = "Rick"; row["Entered"] = now; row["NullValue"] = null; // converted in DbNull dynamic drow = new DynamicDataRow(row); string name = drow.Name; DateTime entered = drow.Entered; string nulled = drow.NullValue; Assert.AreEqual(name, "Rick"); Assert.AreEqual(entered,now); Assert.IsNull(nulled); // this should throw a RuntimeBinderException Assert.AreEqual(entered,drow.enteredd); } The DynamicDataRow requires a custom constructor that accepts a single parameter that sets the DataRow. Once that's done you can access property values that match the field names. Note that types are automatically converted - no type casting is needed in the code you write. The class also automatically converts DbNulls to regular nulls and vice versa which is something that makes it much easier to deal with data returned from a database. What's cool here isn't so much the functionality - even if I'd prefer to leave DataRow behind ASAP -  but the fact that we can create a dynamic type that uses a DataRow as it's 'DataSource' to serve member values. It's pretty useful feature if you think about it, especially given how little code it takes to implement. By implementing these two simple methods we get to provide two features I was complaining about at the beginning that are missing from the DataRow: Direct Property Syntax Automatic Type Casting so no explicit casts are required Caveats As cool and easy as this functionality is, it's important to understand that it doesn't come for free. The dynamic features in .NET are - well - dynamic. Which means they are essentially evaluated at runtime (late bound). Rather than static typing where everything is compiled and linked by the compiler/linker, member invokations are looked up at runtime and essentially call into your custom code. There's some overhead in this. Direct invocations - the original code I showed - is going to be faster than the equivalent dynamic code. However, in the above code the difference of running the dynamic code and the original data access code was very minor. The loop running over 1500 result records took on average 13ms with the original code and 14ms with the dynamic code. Not exactly a serious performance bottleneck. One thing to remember is that Microsoft optimized the DLR code significantly so that repeated calls to the same operations are routed very efficiently which actually makes for very fast evaluation. The bottom line for performance with dynamic code is: Make sure you test and profile your code if you think that there might be a performance issue. However, in my experience with dynamic types so far performance is pretty good for repeated operations (ie. in loops). While usually a little slower the perf hit is a lot less typically than equivalent Reflection work. Although the code in the second example looks like standard object syntax, dynamic is not static code. It's evaluated at runtime and so there's no type recognition until runtime. This means no Intellisense at development time, and any invalid references that call into 'properties' (ie. fields in the DataRow) that don't exist still cause runtime errors. So in the case of the data row you still get a runtime error if you mistype a column name:// this should throw a RuntimeBinderException Assert.AreEqual(entered,drow.enteredd); Dynamic - Lots of uses The arrival of Dynamic types in .NET has been met with mixed emotions. Die hard .NET developers decry dynamic types as an abomination to the language. After all what dynamic accomplishes goes against all that a static language is supposed to provide. On the other hand there are clearly scenarios when dynamic can make life much easier (COM Interop being one place). Think of the possibilities. What other data structures would you like to expose to a simple property interface rather than some sort of collection or dictionary? And beyond what I showed here you can also implement 'Method missing' behavior on objects with InvokeMember which essentially allows you to create dynamic methods. It's all very flexible and maybe just as important: It's easy to do. There's a lot of power hidden in this seemingly simple interface. Your move…© Rick Strahl, West Wind Technologies, 2005-2011Posted in CSharp  .NET   Tweet (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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• gzip specific files

  - by byTheDrop

  for some reason these files are not gzipping on my apache server, chrome network tab shows this. Is there a specific directive I can add to htaccess to cache these files? Compressing the following resources with gzip could reduce their transfer size by about two thirds (~680.45KB): adae8bc4c3cb52cbe22358aaced87a72.css could save ~607B css_f91fa8d73b5e7661d6dcf9e58395e533.css could save ~59.54KB jquery.min.js could save ~37.27KB drupal.js could save ~6.15KB auto_image_handling.js could save ~6.72KB lightbox.js could save ~29.38KB superfish.js could save ~2.42KB jquery.bgiframe.min.js could save ~1011B jquery.hoverIntent.minified.js could save ~1.05KB nice_menus.js could save ~581B panels.js could save ~531B jquery.pngFix.js could save ~2.98KB jquery.cycle.all.min.js could save ~20.20KB views_slideshow.js could save ~8.76KB views_slideshow.js could save ~9.02KB wanderlust_custom_videos.js could save ~598B wl_helper.js could save ~777B extlink.js could save ~2.88KB cufon-yui.js could save ~11.89KB googleanalytics.js could save ~1.48KB swfobject.js could save ~6.65KB jquery.jcarousel.min.js could save ~10.19KB jcarousel.js could save ~6.01KB Akzidenz_Grotesk_BE_Super_800.font.js could save ~14.27KB Akzidenz_Grotesk_BE_Bold_700.font.js could save ~12.96KB Akzidenz_Grotesk_BE_Cn_400.font.js could save ~13.39KB SuperCondensed_500.font.js could save ~24.40KB FuturaBold_700.font.js could save ~26.19KB Futura_500.font.js could save ~57.70KB SuperGroteskB_500.font.js could save ~23.86KB jquery.cookie.js could save ~1.25KB wanderlust.js could save ~1.69KB sliderbottom.js could save ~442B jcarousellite_1.0.1.min.js could save ~4.60KB jcarousellite_control.js could save ~224B sitesdropdown.js could save ~1.09KB widgets.js could save ~50.13KB cufon-drupal.js could save ~599B swfobject_api.js could save ~348B ga.js could save ~24.02KB all.js could save ~124.67KB tweet_button.1347008535.html could save ~38.43KB xd_arbiter.php could save ~16.80KB xd_arbiter.php could save ~16.80KB

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• Sharing A Stage: JDeveloper/ADF & NetBeans/Java EE 6?

  - by Geertjan

  A highlight for me during last week's Oracle Developer Day in Romania (which I blogged about here) was meeting Jernej Kaše (who is from Slovenia, just like my philosopher hero Slavoj Žižek), who is an Oracle Fusion Middleware evangelist. At the conference, while I was presenting NetBeans and Java EE 6 in one room, Jernej was presenting JDeveloper and ADF in another room. The application he created looks as follows, i.e., a realistic CRUD app, with a master/detail view, a search feature, and validation: In a conversation during a break, we started imagining a scenario where the two of us would be on the same stage, taking turns talking about NetBeans/Java EE and JDeveloper/ADF. In that way, attendees at a conference wouldn't need to choose which of the two topics to attend, because they'd be handled in the same session, with the session possibly being longer so that sufficient time could be spent on the respective technologies. (The JDeveloper/ADF session would then not be competing with the NetBeans/Java EE 6 session, since they'd be handled simultaneously.) The session would focus on the similarities/differences between the two respective tools/solutions, which would be extremely interesting and also unique. The crucial question in making this kind of co-presentation possible is whether (and how quickly) an application such as the one created above with JDeveloper/ADF could be created with NetBeans/Java EE 6. The NetBeans/Java EE 6 story is extremely strong on the model and controler levels, but less strong on the view layer. Though there are choices between using PrimeFaces, RichFaces, and IceFaces, that support is quite limited in the absence of a visual designer or of other specific tools (e.g., code generators to generate snippets of PrimeFaces) connected to JSF component libraries. However, it so happens that in recent months we at NetBeans have established really good connections with the PrimeFaces team (more about that another time). So I asked them what it would take to write the above UI in PrimeFaces. The PrimeFaces team were very helpful. They sent me the following screenshot, which is of the UI they created in PrimeFaces, reproducing the ADF screenshot above: Of course, the above is purely the UI layer, there's no EJB and entity classes and data connection hooked into it yet. However, this is the Facelets file that the PrimeFaces team sent me, i.e., using the PrimeFaces component library, that produces the above result: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.org/ui"> <f:view> <h:head> <style type="text/css"> .alignRight { text-align: right; } .alignLeft { text-align: left; } .alignTop { vertical-align: top; } .ui-validation-required { color: red; font-size: 14px; margin-right: 5px; position: relative; vertical-align: top; } .ui-selectonemenu .ui-selectonemenu-trigger .ui-icon { margin-top: 7px !important; } </style> </h:head> <h:body> <h:form prependId="false" id="form"> <p:panel header="Employees"> <h:panelGrid columns="4" id="searchPanel"> Search <p:selectOneMenu> <f:selectItem itemLabel="FirstName" itemValue="FirstName" /> <f:selectItem itemLabel="LastName" itemValue="LastName" /> <f:selectItem itemLabel="Email" itemValue="Email" /> <f:selectItem itemLabel="PhoneNumber" itemValue="PhoneNumber" /> </p:selectOneMenu> <p:inputText /> <p:commandLink process="searchPanel" update="@form"> <h:graphicImage name="next.gif" library="img" /> </p:commandLink> </h:panelGrid> <h:panelGrid columns="3" columnClasses="alignTop,,alignTop" style="width:90%;margin-left:10%"> <h:panelGrid columns="2" columnClasses="alignRight,alignLeft"> <h:outputLabel for="firstName">FirstName</h:outputLabel> <p:inputText id="firstName" /> <h:outputLabel for="lastName"> <sup class="ui-validation-required">*</sup>LastName </h:outputLabel> <p:inputText id="lastName" style="width:250px;" /> <h:outputLabel for="email"> <sup class="ui-validation-required">*</sup>Email </h:outputLabel> <p:inputText id="email" style="width:250px;" /> <h:outputLabel for="phoneNumber" value="PhoneNumber" /> <p:inputMask id="phoneNumber" mask="999.999.9999" /> <h:outputLabel for="hireDate"> <sup class="ui-validation-required">*</sup>HireDate</h:outputLabel> <p:calendar id="hireDate" pattern="MM/dd/yyyy" showOn="button" /> </h:panelGrid> <p:outputPanel style="min-width:40px;" /> <h:panelGrid columns="2" columnClasses="alignRight,alignLeft"> <h:outputLabel for="jobId"> <sup class="ui-validation-required">*</sup>JobId </h:outputLabel> <p:selectOneMenu id="jobId" > <f:selectItem itemLabel="Administration Vice President" itemValue="Administration Vice President" /> <f:selectItem itemLabel="Vice President" itemValue="Vice President" /> </p:selectOneMenu> <h:outputLabel for="salary">Salary</h:outputLabel> <p:inputText id="salary" styleClass="alignRight" /> <h:outputLabel for="commissionPct">CommissionPct</h:outputLabel> <p:inputText id="commissionPct" style="width:30px;" maxlength="3" /> <h:outputLabel for="manager">ManagerId</h:outputLabel> <p:selectOneMenu id="manager"> <f:selectItem itemLabel="Steven King" itemValue="Steven" /> <f:selectItem itemLabel="Michael Cook" itemValue="Michael" /> <f:selectItem itemLabel="John Benjamin" itemValue="John" /> <f:selectItem itemLabel="Dav Glass" itemValue="Dav" /> </p:selectOneMenu> <h:outputLabel for="department">DepartmentId</h:outputLabel> <p:selectOneMenu id="department"> <f:selectItem itemLabel="90" itemValue="90" /> <f:selectItem itemLabel="80" itemValue="80" /> <f:selectItem itemLabel="70" itemValue="70" /> <f:selectItem itemLabel="60" itemValue="60" /> <f:selectItem itemLabel="50" itemValue="50" /> <f:selectItem itemLabel="40" itemValue="40" /> <f:selectItem itemLabel="30" itemValue="30" /> <f:selectItem itemLabel="20" itemValue="20" /> </p:selectOneMenu> </h:panelGrid> </h:panelGrid> <p:outputPanel id="buttonPanel"> <p:commandButton value="First" process="@this" update="@form" /> <p:commandButton value="Previous" process="@this" update="@form" style="margin-left:15px;" /> <p:commandButton value="Next" process="@this" update="@form" style="margin-left:15px;" /> <p:commandButton value="Last" process="@this" update="@form" style="margin-left:15px;" /> </p:outputPanel> <p:tabView style="margin-top:25px"> <p:tab title="Job History"> <p:dataTable var="history"> <p:column headerText="StartDate"> <h:outputText value="#{history.startDate}"> <f:convertDateTime pattern="MM/dd/yyyy" /> </h:outputText> </p:column> <p:column headerText="EndDate"> <h:outputText value="#{history.endDate}"> <f:convertDateTime pattern="MM/dd/yyyy" /> </h:outputText> </p:column> <p:column headerText="JobId"> <h:outputText value="#{history.jobId}" /> </p:column> <p:column headerText="DepartmentId"> <h:outputText value="#{history.departmentIdId}" /> </p:column> </p:dataTable> </p:tab> </p:tabView> </p:panel> </h:form> </h:body> </f:view> </html> Right now, NetBeans IDE only has code completion to create the above. So there's not much help for creating such a UI right now. I don't believe that a visual designer is mandatory to create the above. A few code generators and file templates could do the job too. And I'm looking forward to seeing those kinds of tools for PrimeFaces, as well as other JSF component libraries, appearing in NetBeans IDE in upcoming releases. A related option would be for the NetBeans generated CRUD app to include the option of having a master/detail view, as well as the option of having a search feature, i.e., the application generators would provide the option of having additional features typical in Java enterprise apps. In the absence of such tools, there still is room, I believe, for NetBeans/Java EE and JDeveloper/ADF sharing a stage at a conference. The above file would have been prepared up front and the presenter would state that fact. The UI layer is only one aspect of a Java EE 6 application, so that the presenter would have ample other features to show (i.e., the entity class generation, the tools for working with servlets, with session beans, etc) prior to getting to the point where the statement would be made: "On the UI layer, I have prepared this Facelets file, which I will now show you can be connected to the lower layers of the application as follows." At that point, the session beans could be hooked into the Facelets file, the file would be saved, the browser refreshed, and then the whole application would work exactly as the ADF application does. So, Jernej, let's share a stage soon!

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• CodePlex Daily Summary for Thursday, June 02, 2011

  CodePlex Daily Summary for Thursday, June 02, 2011Popular ReleasesDotRas: DotRas v1.2 (Version 1.2.4168): This release includes compiled (and signed) versions of the binaries, PDBs, CHM help documentation, along with both C# and VB.NET examples. Please don't forget to rate the release! If you find a bug, please open a work item and give as much description as possible. Stack traces, which operating system(s) you're targeting, and build type is also very helpful for bug hunting. If you find something you believe to be a bug but are not sure, create a new discussion on the discussions board. Thank...Caliburn Micro: WPF, Silverlight and WP7 made easy.: Caliburn.Micro v1.1 RTW: Download ContentsDebug and Release Assemblies Samples Changes.txt License.txt Release Highlights For WP7A new Tombstoning API based on ideas from Fluent NHibernate A new Launcher/Chooser API Strongly typed Navigation SimpleContainer included The full phone lifecycle is made easy to work with ie. we figure out whether your app is actually Resurrecting or just Continuing for you For WPFSupport for the Client Profile Better support for WinForms integration All PlatformsA power...Pssdiag and Sqldiag Manager: Diag Manager Release 10.5.1.202: This release fixed a bug regarding saving the final package. If you browse a folder when saving the configured package, the default file name will change back to pssd.exe. It should be pssd.cab.VidCoder: 0.9.1: Added color coding to the Log window. Errors are highlighted in red, HandBrake logs are in black and VidCoder logs are in dark blue. Moved enqueue button to the right with the other control buttons. Added logic to report failures when errors are logged during the encode or when the encode finishes prematurely. Added Copy button to Log window. Adjusted audio track selection box to always show the full track name. Changed encode job progress bar to also be colored yellow when the enco...Terraria Map Generator: TerrariaMapTool 1.0.0.3 Beta: 1) Catch all exception from the gui app. 2) Fixed the use of the graphics device to really use reach.AutoLoL: AutoLoL v2.0.1: - Fixed a small bug in Auto Login - Fixed the updaterEPPlus-Create advanced Excel 2007 spreadsheets on the server: EPPlus 2.9.0.1: EPPlus-Create advanced Excel 2007 spreadsheets on the server This version has been updated to .Net Framework 3.5 New Features Data Validation. PivotTables (Basic functionalliy...) Support for worksheet data sources. Column, Row, Page and Data fields. Date and Numeric grouping Build in styles. ...and more And some minor new features... Ranges Text-Property|Get the formated value AutofitColumns-method to set the column width from the content of the range LoadFromCollection-metho...jQuery ASP.Net MVC Controls: Version 1.4.0.0: Version 1.4.0.0 contains the following additions: Upgraded to MVC 3.0 Upgraded to jQuery 1.6.1 (Though the project supports all jQuery version from 1.4.x onwards) Upgraded to jqGrid 3.8 Better Razor View-Engine support Better Pager support, includes support for custom pagers Added jqGrid toolbar buttons support Search module refactored, with full suport for multiple filters and ordering And Code cleanup, bug-fixes and better controller configuration support.Restbucks on .Net: RestBucks Alpha 1: This is the first release of the application.Nearforums - ASP.NET MVC forum engine: Nearforums v6.0: Version 6.0 of Nearforums, the ASP.NET MVC Forum Engine, containing new features: Authentication using Membership Provider for SQL Server and MySql Spam prevention: Flood Control Moderation: Flag messages Content management: Pages: Create pages (about us/contact/texts) through web administration Allow nearforums to run as an IIS subapp Migrated Facebook Connect to OAuth 2.0 Visit the project Roadmap for more details.NetOffice - The easiest way to use Office in .NET: NetOffice Release 0.8b: Changes: - fix critical issue 15922(AccessViolationException) once and for all update is strongly recommended Includes: - Runtime Binaries and Source Code for .NET Framework:......v2.0, v3.0, v3.5, v4.0 - Tutorials in C# and VB.Net:..............................................................COM Proxy Management, Events, etc. - Examples in C# and VB.Net:............................................................Excel, Word, Outlook, PowerPoint, Access - COMAddin Examples in C# and VB....Facebook Graph Toolkit: Facebook Graph Toolkit 1.5.4186: Updates the API in response to Facebook's recent change of policy: All Graph Api accessing feeds or posts must provide a AccessToken.SharePoint Farm Poster: SharePoint Farm Poster: SharePoint Farm Poster is generated by a PowerShell Script. Run this script under the Farm Admin Account. After downloading, unblock the file in the Property Window. Current version is beta : v0.3.7Serviio for Windows Home Server: Beta Release 0.5.2.0: Ready for widespread beta. Synchronized build number to Serviio version to avoid confusion.AcDown????? - Anime&Comic Downloader: AcDown????? v3.0 Beta4: ??AcDown?????????????，??????????????，????、????。?????Acfun????? ????32??64? Windows XP/Vista/7 ????????????? ??：????????Windows XP???,?????????.NET Framework 2.0???(x86)?.NET Framework 2.0???(x64)，?????"?????????"??? ??v3.0 Beta4 2011-5-31?? ???Bilibili.us????? ???? ?? ???"????" ???Bilibili.us??? ??????? ?? ??????? ?? ???????? ?? ?? ???Bilibili.us?????(??????????????????) ??????(6.cn)?????(????) ?? ?????Acfun?????????? ?????????????? ???QQ???????? ????????????Discussion...ClosedXML - The easy way to OpenXML: ClosedXML 0.53.2: New on this release: 1) Added FindCells, FindColumns, and FindRows methods to the workbook object. 2) Added cell.ValueCached property that holds Excel's cache of formula evaluations. 3) Added the following properties to the worksheets: ShowFormulas ShowGridLines ShowOutlineSymbols ShowRowColHeaders ShowRuler ShowWhiteSpace ShowZeros 4) Added methods Worksheets.Add(DataTable), Worksheets.Add(DataSet). See examples Adding DataTable as Worksheet, Adding DataSet 5) Fixed issues 6609,...CodeCopy Auto Code Converter: Code Copy v0.1: Full add-in, setup project source code and setup fileWordpress Theme 'Windows Metro': v1.00.0017: v1.00.0017 Dies ist eine Vorab-Version aus der Entwickler-Phase. This is a preview version from the development phase.Kooboo CMS: Kooboo CMS 3.02: Updated the Kooboo_CMS.zip at 2011-06-02 11:44 GMT 1.Fixed: Adding data rule issue on page. 2.Fixed: Caching issue for higher performance. Updated the Kooboo_CMS.zip at 2011-06-01 10:00 GMT 1. Fixed the published package throwed a compile error under WebSite mode. 2. Fixed the ContentHelper.NewMediaFolderObject return TextFolder issue. 3. Shorten the name of ContentHelper API. NewMediaFolderObject=>MediaFolder, NewTextFolderObject=> TextFolder, NewSchemaObject=>Schema. Also update the C...mojoPortal: 2.3.6.6: see release notes on mojoportal.com http://www.mojoportal.com/mojoportal-2366-released Note that we have separate deployment packages for .NET 3.5 and .NET 4.0 The deployment package downloads on this page are pre-compiled and ready for production deployment, they contain no C# source code. To download the source code see the Source Code Tab I recommend getting the latest source code using TortoiseHG, you can get the source code corresponding to this release here.New ProjectsAgile DDD Framework: Agile DDD FrameworkEnigma Suspicious Indicators Script: Enigma is a bash script that parses known suspicious indicators data from open and close source intelligence feeds and dynamiclly sends the data into ArcSight via CEF syslog. Please unzip the latest build and follow the instructions in the install.txt file.Fonqi ColorPicker for Umbraco: A Color Picker datatype for the Umbraco CMS.Fonqi.TemplatePicker Datatype for Umbraco: A template picker datatype for the umbraco cms. Implemented with the umbraco usercontrol wrapperGeneric Library: Still in building...Microsoft Surface StarterKit for VB.NET: Currently you can only create applications for Microsoft Surface in C #. Microsoft Surface Starterkit for VB.NET is an initial project of WPF that implements all the necessary references to create a Microsoft Surface application in Visual Basic. Actualmente solo se pueden crear aplicaciones para Microsoft Surface en C#. Microsoft Surface StarterKit for VB.NET es un proyecto inicial de WPF que implementa todas las referencias necesarias para crear una aplicación Microsoft Surface en Visual ...OpenCV Video Writer: For OpenCV2.2 Main Function: Use mouse to draw on window, edited video will be made in realtime. Support fading out effect and translucence drawing. This program use a read-edit-write model to achieve Realtime editing of video. Social Playlist: The Social Playlist Module is a DNN module that enables musicians to upload and manage their music online (possibly sale) and enables other users (not musician) to create personal playlist. The dynamics between musicians and user is similar to sites like MySpace and Ilike.splitbook: splitbookSQL Compact Query Analyzer: SQL Server Compact Edition Database Query AnalyzerTerm Store Migration Tool: Console application for migrating term store from one farm to another SharePoint farm. The tool exports the term store in an xml format which can be restored to same/another farm with same GUID's.TFS fa schifo: Questo progetto è da intendersi come dimostrazione del fatto che TFS fa veramente, inesorabilmente, indistintamente e veritatamente schifoTypheus Browser: A simple .Net browser based of the Typheus Browser from Homestuck.Ultimate Explorer: A Windows Explorer alternative.v76.DictionaryPicker for Umbraco: A Dictionary Picker Datatype for Umbraco CMS

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• Faster, Simpler access to Azure Tables with Enzo Azure API

  - by Herve Roggero

  After developing the latest version of Enzo Cloud Backup I took the time to create an API that would simplify access to Azure Tables (the Enzo Azure API). At first, my goal was to make the code simpler compared to the Microsoft Azure SDK. But as it turns out it is also a little faster; and when using the specialized methods (the fetch strategies) it is much faster out of the box than the Microsoft SDK, unless you start creating complex parallel and resilient routines yourself. Last but not least, I decided to add a few extension methods that I think you will find attractive, such as the ability to transform a list of entities into a DataTable. So let’s review each area in more details. Simpler Code My first objective was to make the API much easier to use than the Azure SDK. I wanted to reduce the amount of code necessary to fetch entities, remove the code needed to add automatic retries and handle transient conditions, and give additional control, such as a way to cancel operations, obtain basic statistics on the calls, and control the maximum number of REST calls the API generates in an attempt to avoid throttling conditions in the first place (something you cannot do with the Azure SDK at this time). Strongly Typed Before diving into the code, the following examples rely on a strongly typed class called MyData. The way MyData is defined for the Azure SDK is similar to the Enzo Azure API, with the exception that they inherit from different classes. With the Azure SDK, classes that represent entities must inherit from TableServiceEntity, while classes with the Enzo Azure API must inherit from BaseAzureTable or implement a specific interface. // With the SDK public class MyData1 : TableServiceEntity {     public string Message { get; set; }     public string Level { get; set; }     public string Severity { get; set; } } //  With the Enzo Azure API public class MyData2 : BaseAzureTable {     public string Message { get; set; }     public string Level { get; set; }     public string Severity { get; set; } } Simpler Code Now that the classes representing an Azure Table entity are defined, let’s review the methods that the Azure SDK would look like when fetching all the entities from an Azure Table (note the use of a few variables: the _tableName variable stores the name of the Azure Table, and the ConnectionString property returns the connection string for the Storage Account containing the table): // With the Azure SDK public List<MyData1> FetchAllEntities() {      CloudStorageAccount storageAccount = CloudStorageAccount.Parse(ConnectionString);      CloudTableClient tableClient = storageAccount.CreateCloudTableClient();      TableServiceContext serviceContext = tableClient.GetDataServiceContext();      CloudTableQuery<MyData1> partitionQuery =         (from e in serviceContext.CreateQuery<MyData1>(_tableName)         select new MyData1()         {            PartitionKey = e.PartitionKey,            RowKey = e.RowKey,            Timestamp = e.Timestamp,            Message = e.Message,            Level = e.Level,            Severity = e.Severity            }).AsTableServiceQuery<MyData1>();        return partitionQuery.ToList();  } This code gives you automatic retries because the AsTableServiceQuery does that for you. Also, note that this method is strongly-typed because it is using LINQ. Although this doesn’t look like too much code at first glance, you are actually mapping the strongly-typed object manually. So for larger entities, with dozens of properties, your code will grow. And from a maintenance standpoint, when a new property is added, you may need to change the mapping code. You will also note that the mapping being performed is optional; it is desired when you want to retrieve specific properties of the entities (not all) to reduce the network traffic. If you do not specify the properties you want, all the properties will be returned; in this example we are returning the Message, Level and Severity properties (in addition to the required PartitionKey, RowKey and Timestamp). The Enzo Azure API does the mapping automatically and also handles automatic reties when fetching entities. The equivalent code to fetch all the entities (with the same three properties) from the same Azure Table looks like this: // With the Enzo Azure API public List<MyData2> FetchAllEntities() {        AzureTable at = new AzureTable(_accountName, _accountKey, _ssl, _tableName);        List<MyData2> res = at.Fetch<MyData2>("", "Message,Level,Severity");        return res; } As you can see, the Enzo Azure API returns the entities already strongly typed, so there is no need to map the output. Also, the Enzo Azure API makes it easy to specify the list of properties to return, and to specify a filter as well (no filter was provided in this example; the filter is passed as the first parameter).  Fetch Strategies Both approaches discussed above fetch the data sequentially. In addition to the linear/sequential fetch methods, the Enzo Azure API provides specific fetch strategies. Fetch strategies are designed to prepare a set of REST calls, executed in parallel, in a way that performs faster that if you were to fetch the data sequentially. For example, if the PartitionKey is a GUID string, you could prepare multiple calls, providing appropriate filters ([‘a’, ‘b’[, [‘b’, ‘c’[, [‘c’, ‘d[, …), and send those calls in parallel. As you can imagine, the code necessary to create these requests would be fairly large. With the Enzo Azure API, two strategies are provided out of the box: the GUID and List strategies. If you are interested in how these strategies work, see the Enzo Azure API Online Help. Here is an example code that performs parallel requests using the GUID strategy (which executes more than 2 t o3 times faster than the sequential methods discussed previously): public List<MyData2> FetchAllEntitiesGUID() {     AzureTable at = new AzureTable(_accountName, _accountKey, _ssl, _tableName);     List<MyData2> res = at.FetchWithGuid<MyData2>("", "Message,Level,Severity");     return res; } Faster Results With Sequential Fetch Methods Developing a faster API wasn’t a primary objective; but it appears that the performance tests performed with the Enzo Azure API deliver the data a little faster out of the box (5%-10% on average, and sometimes to up 50% faster) with the sequential fetch methods. Although the amount of data is the same regardless of the approach (and the REST calls are almost exactly identical), the object mapping approach is different. So it is likely that the slight performance increase is due to a lighter API. Using LINQ offers many advantages and tremendous flexibility; nevertheless when fetching data it seems that the Enzo Azure API delivers faster.  For example, the same code previously discussed delivered the following results when fetching 3,000 entities (about 1KB each). The average elapsed time shows that the Azure SDK returned the 3000 entities in about 5.9 seconds on average, while the Enzo Azure API took 4.2 seconds on average (39% improvement). With Fetch Strategies When using the fetch strategies we are no longer comparing apples to apples; the Azure SDK is not designed to implement fetch strategies out of the box, so you would need to code the strategies yourself. Nevertheless I wanted to provide out of the box capabilities, and as a result you see a test that returned about 10,000 entities (1KB each entity), and an average execution time over 5 runs. The Azure SDK implemented a sequential fetch while the Enzo Azure API implemented the List fetch strategy. The fetch strategy was 2.3 times faster. Note that the following test hit a limit on my network bandwidth quickly (3.56Mbps), so the results of the fetch strategy is significantly below what it could be with a higher bandwidth. Additional Methods The API wouldn’t be complete without support for a few important methods other than the fetch methods discussed previously. The Enzo Azure API offers these additional capabilities: - Support for batch updates, deletes and inserts - Conversion of entities to DataRow, and List<> to a DataTable - Extension methods for Delete, Merge, Update, Insert - Support for asynchronous calls and cancellation - Support for fetch statistics (total bytes, total REST calls, retries…) For more information, visit http://www.bluesyntax.net or go directly to the Enzo Azure API page (http://www.bluesyntax.net/EnzoAzureAPI.aspx). About Herve Roggero Herve Roggero, Windows Azure MVP, is the founder of Blue Syntax Consulting, a company specialized in cloud computing products and services. Herve's experience includes software development, architecture, database administration and senior management with both global corporations and startup companies. Herve holds multiple certifications, including an MCDBA, MCSE, MCSD. He also holds a Master's degree in Business Administration from Indiana University. Herve is the co-author of "PRO SQL Azure" from Apress and runs the Azure Florida Association (on LinkedIn: http://www.linkedin.com/groups?gid=4177626). For more information on Blue Syntax Consulting, visit www.bluesyntax.net.

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• "Enumeration yielded no results" When using Query Syntax in C#

  - by Shantanu Gupta

  I have created this query to fetch some result from database. Here is my table structure. What exaclty is happening. DtMapGuestDepartment as Table 1 DtDepartment as Table 2 Are being used var dept_list= from map in DtMapGuestDepartment.AsEnumerable() where map.Field<Nullable<long>>("GUEST_ID") == DRowGuestPI.Field<Nullable<long>>("PK_GUEST_ID") join dept in DtDepartment.AsEnumerable() on map.Field<Nullable<long>>("DEPARTMENT_ID") equals dept.Field<Nullable<long>>("DEPARTMENT_ID") select dept.Field<string>("DEPARTMENT_ID"); I am performing this query on DataTables and expect it to return me a datatable. Here I want to select distinct department from Table 1 as well which will be my next quest. Please answer to that also if possible.

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• .NET ExcelLibrary Export Problems - .XLS corruption

  - by hamlin11

  The library is located here: http://code.google.com/p/excellibrary/ I'm using some basic code to create an .XLS file. When I open the file in Excel 2007, I get the following errors: I click yes, then I get: And just for fun, here's the XML error details (not very helpful) Here's the code that I'm using to generate the Excel file: Dim ds As New DataSet Dim dt1 As New DataTable("table 1") dt1.Columns.Add("column A", GetType(String)) dt1.Columns.Add("column B", GetType(String)) dt1.Rows.Add("test 1", "Test 2") dt1.Rows.Add("test 3", "Test 4") ds.Tables.Add(dt1) ExcelLibrary.DataSetHelper.CreateWorkbook("c:/temp/test1.xls", ds) Note: I added a reference to the DLL provided by the project download page and have an "Imports ExcelLibrary.Office.Excel" to link up with it Any ideas on what the corruption is and/or how to fix it? Thanks

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• DAL, Session, Cache architecture

  - by subt13

  I'm attempting to create Data Access Layer for my web application. Currently, all datatables are stored in the session. When I am finished the DAL will populate and return datatables. Is it a good idea to store the returned datatables in the session? A distributed/shared cache? Or just ping the database each time? Note: generally the number of rows in the datatable will be small < 2000. Thanks

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• Django templates crashes with no sense

  - by user233323

  Hello I'm trying to use google visualization API along with django templates system. I got an error that don't know how to fix. The error is the following: invalid_block_tag raise self.error(token, "Invalid block tag: '%s'" % command) django.template.TemplateSyntaxError: Invalid block tag: 'endfor' The code is: function drawChart() { var data = new google.visualization.DataTable(); data.addColumn('date', 'time'); data.addColumn('number', 'x'); data.addColumn('number', 'y'); data.addColumn('number', 'z'); data.addRows([ {% for d in datos &} [new Date({{d.instante|date:"Y, m, d, H, i, s"}}), {{d.x}}, {{d.y}}, {{d.z}}] {% if not forloop.last %},{% endif %} ]); {% endfor %} var chart = new google.visualization.AnnotatedTimeLine(document.getElementById('chart_div')); chart.draw(data, {displayAnnotations: true}); } Thanks you all!

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• jquery datatables add checkbox with ajax server side response

  - by dotneter

  I am using C# ASP .NET MVC and ajax calls. I am able to get the display of the table along with all features. But, I don't understand how do I add a checkbox and button. I have tried dom-checkbox as well but can't get it to work. Any help is appreciated. My code looks like this: $(document).ready(function () { $('#personTable').dataTable({ "bJQueryUI": true, "sPaginationType": "full_numbers", "bProcessing": true, "bServerSide": true, "sAjaxSource": "/Home/GetCustomData", "aoColumns": [ { "sSortDataType": "dom-checkbox", "sTitle": "Select", sName": "" }, { "sName": "ID", "sTitle": "ID" }, { "sName": "FirstName", "sTitle": "First Name" }, { "sName": "Email", "sTitle": "Email"}] }); }); My Html is : [table border="1" id="personTable" class="display"] [/table]

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• Dataset defaultview row filter

  - by acadia

  Hello, I have a dataset named ordersDS with several records I am getting from another function. I have row filters set as below. What I want to know is What does the RowFilters RegionID and OrganizationID do. will it look for records which have either region_id or organization ID. Dim OrderList as new Datatable OrdersDs.Tables(0).DefaultView.RowFilter="Region_ID = " & regionID OrdersDs.Tables(0).DefaultView.RowFilter="Organization_ID = " & OrgID OrderList = OrdersDs.Tables(0).DefaultView.ToTable() if not OrderList is nothing then tempOList = New List(Of Orders) For Each dr As DataRow In OrderList .Rows Try tempOList .Add(New Orders With _ { .Occurence = 1, _ .Severity = 1}) Catch ex As Exception End Try Next end if

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• How get Tomahawk functionality with JSF 2.0 (Glassfish V3)

  - by Thorbjørn Ravn Andersen

  I've started to upgrade an existing application written with JSF 1.1 and MyFaces Tomahawk 1.1 to JSF 2.0 to get facelets etc. I've now run into the snag that apparently Tomahawk is not JSF 2.0 compatible as it expects the stand-alone version of Facelets instead of the built-in to JSF 2.0 with the following error: org.apache.catalina.LifecycleException: com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! com.sun.facelets.tag.jsf.ComponentHandler (it appears to be placed in javax.faces.view.facelets now). I have looked around and there doesn't seem to be a JSF 2.0 facelet compatible version of Tomahawk. I only believe I need t:updateActionListener (inside t:dataTable) and the rowSpan facility of t:panelGroup. Is all this functionality available in JSF 2.0 directly, or must I locate a new library giving this? Any suggestions?

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• Preserving DataRowState when serializing DataSet using DataContractSerializer

  - by user349453

  For various reasons I am having to send a typed dataset to a WCF service endpoint. This works fine except that upon Deserializing, the RowState of each row in each DataTable is set to 'Added', regardless of what they were on the client. If I write the serialized stream out to a file, I see that the RowState is not part of the Serialized data. How can I add this so that I can preserve the RowState across service boundaries? Not that I think it matters, but the client process is running .net 3.5 while the service process is running .net 4.0

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• Repeater and add columns to header and itemtemplate on page load

  - by sdmiller

  I haven't used repeaters for much more than showing data from a datatable. I am building a grid that that shows a list of users and columns of roles that the user has been assigned, shown with checkboxes (shown with true/false below but pretent they are checkboxes). ex. |Rep Name|Caller|Closer|Manager|SuperUser| |Bob |True |true | false | false | |Tom |false |false |True | True | Basically using it for roles management. However the roles may change later on so I want to load the roles(headers and items) dynamically into the repeater. I am not sure how to do this or if it is even possible. I figure you grab a list of current role possibilities and load them into the headertemplate but I am not sure how to match those with the itemtemplate and how to create checkboxes and place them in the itemtemplate. Sorry if it is a rudementary question.... I appreciate any advice!

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• Select TOP 5 * from SomeTable, using Dataview.RowFilter ?

  - by eugeneK

  I need to select 5 most recent rows from cached Dataview object, is there any way to do that? I've tried but Indexer DataColumn is empty. : public static DataView getLatestFourActive() { DataTable productDataTable = getAll().ToTable(); DataColumn ExpressionColumn = new DataColumn("Indexer",typeof(System.Int32)); ExpressionColumn.Unique = true; ExpressionColumn.AutoIncrement = true; ExpressionColumn.AllowDBNull = false; ExpressionColumn.AutoIncrementSeed = 0; ExpressionColumn.AutoIncrementStep = 1; productDataTable.Columns.Add(ExpressionColumn); DataView productFilteredView = productDataTable.DefaultView; productFilteredView.RowFilter = "isActive=1 and Indexer<4"; return productFilteredView; } getAll() returns cached DataView thanks

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• Session state in asp.net mvc

  - by tiff

  I would like to know how to use session state in a simple log in log out in asp.net mvc.. I have a code here in my controller that I've retrieved from my mysql database for my session log in..but I don't really know how to manipulate it.. <AcceptVerbs(HttpVerbs.Post)> _ Function Index(ByVal username As String, ByVal password As String, ByVal department As String) As ActionResult Dim user As DataTable user = Account.userSelect(username:=username, password:=password, department:=department) If user.Rows.Count = 0 Then Return RedirectToAction("Index", "Home") Else Session("username") = user.Rows(0).Item("username") Session("department") = user.Rows(0).Item("department") Return RedirectToAction("News", "Administration") End If End Function Thank you!

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• Winforms - a strange problem a with simple binding

  - by Adi Barda

  Hi Guys, It's hard for me to clearly describe my problem but I'll try. I have a UserControl1 which contains UserControl2 which contains several WinForms controls (most of them DevExpress). I do simple binding to these controls to my datatable fields. So far everything works fine. When I move the focus to a record in the table (by navigating in a grid rows for example) the binding works great, the concurrenmcy manager moves the cursor and everything reflects right in the bounded controls. The problem starts when I add new user UserControl3 above UserControl2 and make UserControl2.Visible = false. Now UserControl3 is shown and UserControl2 exists but not shown. Now when I set UserControl2.Visible = true to show it again the simple binding stops working! I navigate in the grid but either the ConcurrencyManager stops working or the simple binding becomes disconnected. My question: Are there any known issues/ best practices with the binding & concurrency manager? Thanks a lot, Adi Barda

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• jquery dataTables plugin: dynamically modify ajaxSource

  - by Anthony Koval'

  hello! on my page i have dataTable, which was initialized with, for example, sAjaxSource url like "/api/reports". when we're doing sorting, filtering it appends to url additional query-keys. I want do add keys "date_from" and "date_to" to sAjaxSource url (date intervals could be changed after table initialization). is there any entry-point function, before table reload, so i can do there smth like: var oSettings = rtbl.fnSettings(); oSettings.sAjaxSource = "/api/reports/?type=sites&date_from=" + $("#date_from").text() + "&date_to=" + $("#date_to").text(); thanks for your help!

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• Using Silverlight 4 with ODBC

  - by user1384831

  I'm completely new to Silverlight and I want to connect to a Netezza database with an ODBC connection and pull records to display nicely in Silverlight. What's the easiest way to do this? From some research, it seems creating a WCF RIA service is what most people do ( http://www.codeproject.com/Articles/354715/Creating-a-WCF-RIA-Services-Class-Library-for-a-Si ) but the process seems a bit convoluted. Coming from an ASP.net background, could I do something simpler like creating an ODBC connection in the code-behind (using System.Data.ODBC functionality), executing a query, storing the returned records in a Datatable and then binding that to some Silverlight control?

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• Using a DataSet instead of custom business entities in soa and n-tier architecture

  - by kathy

  I’m working on a large and a high volume transactional enterprise application which has been designed using n-tire application architecture .And it was developed in the .NET platform utilizing C#,VB.NEt, Framework 3.5, ObjectDataSources, DataSet, WCF, asp.net update panel, JavaScript ,JSON, 3rd Party tools. The application is supposed to accomplish a really scalable / easily maintained / robust application / integrations, and to make sure that my services are created using a format that can be understood by other systems. The problem is, this application is about 70% complete but now I was wondering if the following would cause us future issues, I’m using a DataSet and a DataTable to (get /set) the data (form /to) the stored procedure in the database using the ObjectDataSources and was wondering if this would prevent my application from achieving the above goals. Actually, I am not anti-OO. I write lots of classes for different purposes, but I didn’t use the entity objects(custom business entities) instead of the previous way because I have a large database that may contain 50 tables and I was just afraid to create entities for each table and then in the future if I need to change the schema of the database, it might cause a huge affect on the application ?

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• SP Gridview link button column not working

  - by Dilse Naaz

  Hi I have one sharepoint custom page application which is rendering from a user control. In the user control page, i had used SPGridview for displaying data. My first column is Title Column (link button column), when the user click on the link, then one popup window will open with corresponding data. But the problem is the link button is not working properly. But this application is working as fine in asp.net application. My code is shown below.. <asp:UpdatePanel runat="server" ID="UpdatePanel2"> <ContentTemplate> <SharePoint:SPGridView ID="dgApplicationBox" CellPadding="0" Height="100%" runat="server" ForeColor="Black" Font-Size="10px" Font-Names="Verdana" AutoGenerateColumns="False" AllowPaging="True" Width="100%" BorderStyle="None" BorderWidth="0px" PageSize="10" BorderColor="White" BackColor="White" OnRowDataBound="dgApplicationBox_RowDataBound" DataKeyNames="ApplicationID" OnSelectedIndexChanged="dgApplicationBox_SelectedIndexChanged" OnPageIndexChanging="dgApplicationBox_PageIndexChanging" CssClass="ms-listviewtable" AlternatingRowStyle-CssClass="ms-alternating"> <SelectedRowStyle Font-Bold="True" ForeColor="Black" BackColor="#CE5D5A"></SelectedRowStyle> <EditRowStyle Font-Size="10px" Font-Names="Verdana,Arial,Helvetica,sans-serif"></EditRowStyle> <HeaderStyle Font-Size="11px" Height="20px" Font-Bold="True" ForeColor="Black" BackColor="#E7E8EC"> </HeaderStyle> <PagerStyle HorizontalAlign="Center" ForeColor="#414E61" Font-Size="5px" Font-Names="arial" Height="10px" BackColor="#EBF3FF"></PagerStyle> <RowStyle /> <Columns> <asp:TemplateField HeaderText="Title" HeaderStyle-CssClass="ms-vb"> <ItemTemplate> <asp:LinkButton ID="lbtnSubject" Text='<%# Bind("UDF5") %>' runat="server" OnClick="lbtnSubject_Click"></asp:LinkButton> </ItemTemplate> <HeaderStyle HorizontalAlign="Left" CssClass="ms-vh2" Font-Bold="true" /> <ItemStyle HorizontalAlign="Left" CssClass="ms-vb2" /> </asp:TemplateField> <asp:TemplateField HeaderText="Request No."> <ItemTemplate> <asp:Label ID="lblReqNo" Text='<%# Bind("UDF1") %>' runat="server" /> </ItemTemplate> <HeaderStyle HorizontalAlign="Left" CssClass="ms-vh2" Font-Bold="true" /> <ItemStyle HorizontalAlign="Left" CssClass="ms-vb2" /> </asp:TemplateField> <asp:BoundField DataField="CreatedOn" HeaderText="Created On" DataFormatString="{0:MM/dd/yyyy}" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="Left"> <HeaderStyle CssClass="ms-vh2" Font-Bold="true"></HeaderStyle> <ItemStyle CssClass="ms-vb2"></ItemStyle> </asp:BoundField> <asp:BoundField DataField="Name" HeaderText="Form Type" HeaderStyle-HorizontalAlign="Left" ItemStyle-HorizontalAlign="Left"> <HeaderStyle CssClass="ms-vh2" Font-Bold="true"></HeaderStyle> <ItemStyle CssClass="ms-vb2"></ItemStyle> </asp:BoundField> <asp:TemplateField HeaderText="History"> <HeaderStyle CssClass="ms-vh2" Font-Bold="true"></HeaderStyle> <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="21px" CssClass="ms-vb2"> </ItemStyle> <ItemTemplate> <asp:LinkButton ID="lbtnView" runat="server" OnClick="lbtnView_Click" >View</asp:LinkButton> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Application Id" Visible="False"> <ItemTemplate> <asp:Label ID="lblApplicationId" runat="server" Text='<%# Bind("ApplicationId") %>'></asp:Label> </ItemTemplate> <HeaderStyle HorizontalAlign="Left" CssClass="ms-vh2" Font-Bold="true" /> <ItemStyle HorizontalAlign="Left" CssClass="ms-vb2" /> </asp:TemplateField> </Columns> </SharePoint:SPGridView> </ContentTemplate> </asp:UpdatePanel> when the user click on the link button, this code will works.. try { clearSession(); Session["DigitalSignature"] = null; Button btnDetails = sender as Button; DataTable dt = (DataTable)dgApplicationBox.DataSource; GridViewRow gvRow = (GridViewRow)(sender as LinkButton).Parent.Parent; Session["AppId"] = ((Label)gvRow.FindControl("lblApplicationId")).Text; string subject = ((LinkButton)gvRow.FindControl("lbtnSubject")).Text; WFInfo objWFInfo = new WFInfo(); objWFInfo.InitWorkflowProperty(Convert.ToInt32(Session["AppId"].ToString()), Session["CurrentUser"].ToString()); Session["FormId"] = objWFInfo.FormID.ToString(); string strFilname = objWFInfo.GetFormName(objWFInfo.ApplicationCategoryID.ToString()); string WindowName = strFilname; strFilname += ".aspx"; Session["CategoryId"] = objWFInfo.ApplicationCategoryID.ToString(); //pnlSubmitModal_ModalPopupExtender.Show(); ScriptManager.RegisterStartupScript(this, this.GetType(), "starScript", "popUpWindow('" + strFilname + "?tittle=" + subject + "', 800, 690,'" + WindowName + "');", true); this.Controls.Add(new LiteralControl("<script>alert('hi');</script>")); if (Session["CurrentUser"] != null) { ApplicationForm objApplication = new ApplicationForm(); objApplication.markRead(Convert.ToInt32(Session["AppId"].ToString()), Session["CurrentUser"].ToString()); } bindFolderData(); } If i click on the link button, there will be only post back occuring. but not the popup window open.. Please help me for resolving this problem. thanks in advance..

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• Read XML file from ADO (VB6) Into .Net DataSet

  - by Jimbo

  I am trying to assist users in migrating from a VB6 application to a C# application. The VB6 app allows the export of data from an ADO (2.8) recordset via XML, but the C# application fails to read the XML producing the following error: System.Data.DuplicateNameException: A column named 'name' already belongs to this DataTable VB6 Code Dim RS As Recordset Set RS = p_CN.Execute("SELECT * FROM tblSuppliers INNER JOIN tblSupplierGroups ON tblSupplierGroups.SupplierGroupID=tblSuppliers.SupplierGroupID") RS.Save sDestinationFile, adPersistXML Set RS = Nothing C# Code DataSet ds = new DataSet(); ds.ReadXml(xmlFilePath); I have obviously incorrectly assumed that the XML file format was universally understood?

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• Combobox in bound DataGridView

  - by Dan

  Hi. I've got a DataGridView control which is bound to a database table. I want one of the columns in the gridview to be of combobox type. The combobox should contain a list of hardcoded strings, which is the same for all rows in the datagridview. One of the fields in my database table is an index for this list of hardcoded strings. I've programatically added a new column to the gridview of type "DataGridViewComboBoxColumn", which successfully creates the column with comboboxes in it. However, that's then not bound to the index field in my DB table. The index field in my DB table is actually automatically bound to a column via the DataAdapter::Fill method. I've set this column to hidden, so it's hidden to the user. Obviously just before updating the dataadapter, I can programatically fixup the hidden column in my datatable with the SelectedIndex of my combobox. Just wondering if there's a better way of doing this? Thankyou for any help with this, Dan.

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• How to invoke ajax, so that it should refresh the table and update the column

  - by Radhika

  Hi, In my application,i have four columns in my datatable.Initially, except second column all the other columns displays the value. The second column values should be displayed by automatic refresh. like Initially table looks like ID type Name Color 1 Benz White 2 Maruti Grey 3 Renault orange 4 VW pink After automatic refresh(Using AJAX) it should display like ID type Name Color 1 2012 Benz White 2 2013 Maruti Grey 3 2014 Renault orange 4 2015 VW pink I have implement this in jsf using ajax. can any one help me out in this.

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