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• Do I really need an ORM?

  - by alchemical

  We're about to begin development on a mid-size ASP.Net MVC 2 web site. For a typical page, we grab data and throw it up on the web page, i.e. there is not much pre-processing of the data before it is sent to the UI. We're now making the decision whether or not to use an ORM and if yes, which one. We had been looking at EF2 AKA EF4 (ASP.Net Entity Framework in VS 2010) as one possibility. However, I'm thinking a simple solution in this case may be just to use datatables. The reason being that we don't plan to move the data around or process it a lot once we fetch it, so I'm not sure there is that much value in having strongly-typed objects as DTOs. Also, this way we avoid mapping altogether, thereby I think simplifying the code and allowing for faster development. I should mention budget is an issue on this project, as well as speed of execution. We are striving for simplicity anywhere we can, both to keep the budget smaller, the schedule shorter, and performance fast. We haven't fully decided this yet, but are currently leaning towards no ORM. Will we be OK with the no ORM approach or is an ORM worth it?

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• vant view dataset with microsoft report viewer

  - by Tan

  I have a dataset, the dataset is using a stored procedur to fetch data. i have filled the dataset and everythings is okej.When iam using the debug i can se that the dataset is not empty. but i cant view it with the microsoft report viewer. here is my code please help. private void frmPrint_Load(object sender, EventArgs e) { this.reportViewer1.RefreshReport(); reportViewer1.LocalReport.DataSources.Clear(); GetCauseMachineMatrixTableAdapter adapter = new GetCauseMachineMatrixTableAdapter(); QpNibrolDataSet dataset = new QpNibrolDataSet(); adapter.Fill(dataset.GetCauseMachineMatrix, this.start, this.end); DataTable DT = dataset.Tables[0]; ReportDataSource reportdatasource = new ReportDataSource(); reportdatasource.Name = "RDS_NAME"; reportdatasource.Value = DT; reportViewer1.LocalReport.DataSources.Add(reportdatasource); reportViewer1.LocalReport.Refresh(); reportViewer1.RefreshReport(); } the form is saying "The source of the report definition is not been specified" what im i doing wrong. Idont use a rdlc because when iam trying to view my dataset no columms name show because the Stored procedur i am using requires Parameters. please advice and help my thank you

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• Default class for SQLAlchemy single table inheritance

  - by eclaird

  I've set up a single table inheritance, but I need a "default" class to use when an unknown polymorphic identity is encountered. The database is not in my control and so the data can be pretty much anything. A working example setup: import sqlalchemy as sa from sqlalchemy import orm engine = sa.create_engine('sqlite://') metadata = sa.MetaData(bind=engine) table = sa.Table('example_types', metadata, sa.Column('id', sa.Integer, primary_key=True), sa.Column('type', sa.Integer), ) metadata.create_all() class BaseType(object): pass class TypeA(BaseType): pass class TypeB(BaseType): pass base_mapper = orm.mapper(BaseType, table, polymorphic_on=table.c.type, polymorphic_identity=None, ) orm.mapper(TypeA, inherits=base_mapper, polymorphic_identity='A', ) orm.mapper(TypeB, inherits=base_mapper, polymorphic_identity='B', ) Session = orm.sessionmaker(autocommit=False, autoflush=False) session = Session() Now, if I insert a new unmapped identity... engine.execute('INSERT INTO EXAMPLE_TYPES (TYPE) VALUES (\'C\')') session.query(BaseType).first() ...things break. Traceback (most recent call last): File "<stdin>", line 1, in <module> File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1619, in first ret = list(self[0:1]) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1528, in __getitem__ return list(res) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1797, in instances rows = [process[0](row, None) for row in fetch] File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/mapper.py", line 2179, in _instance _instance = polymorphic_instances[discriminator] File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/util.py", line 83, in __missing__ self[key] = val = self.creator(key) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/mapper.py", line 2341, in configure_subclass_mapper discriminator) AssertionError: No such polymorphic_identity u'C' is defined What I expected: >>> result = session.query(BaseType).first() >>> result <BaseType object at 0x1c8db70> >>> result.type u'C' I think this used to work with some older version of SQLAlchemy, but I haven't been keeping up with the development lately. Any pointers on how to accomplish this?

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• Mapping a collection of enums with NHibernate

  - by beaufabry

  Mapping a collection of enums with NHibernate Specifically, using Attributes for the mappings. Currently I have this working mapping the collection as type Int32 and NH seems to take care of it, but it's not exactly ideal. The error I receive is "Unable to determine type" when trying to map the collection as of the type of the enum I am trying to map. I found a post that said to define a class as public class CEnumType : EnumStringType { public CEnumType() : base(MyEnum) { } } and then map the enum as CEnumType, but this gives "CEnumType is not mapped" or something similar. So has anyone got experience doing this? So anyway, just a simple reference code snippet to give an example with [NHibernate.Mapping.Attributes.Class(Table = "OurClass")] public class CClass : CBaseObject { public enum EAction { do_action, do_other_action }; private IList<EAction> m_class_actions = new List<EAction>(); [NHibernate.Mapping.Attributes.Bag(0, Table = "ClassActions", Cascade="all", Fetch = CollectionFetchMode.Select, Lazy = false)] [NHibernate.Mapping.Attributes.Key(1, Column = "Class_ID")] [NHibernate.Mapping.Attributes.Element(2, Column = "EAction", Type = "Int32")] public virtual IList<EAction> Actions { get { return m_class_actions; } set { m_class_actions = value;} } } So, anyone got the correct attributes for me to map this collection of enums as actual enums? It would be really nice if they were stored in the db as strings instead of ints too but it's not completely necessary.

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• Rails: Should partials be aware of instance variables?

  - by Alexandre

  Ryan Bates' nifty_scaffolding, for example, does this edit.html.erb <%= render :partial => 'form' %> new.html.erb <%= render :partial => 'form' %> _form.html.erb <%= form_for @some_object_defined_in_action %> That hidden state makes me feel uncomfortable, so I usually like to do this edit.html.erb <%= render :partial => 'form', :locals => { :object => @my_object } %> _form.html.erb <%= form_for object %> So which is better: a) having partials access instance variables or b) passing a partial all the variables it needs? I've been opting for b) as of late, but I did run into a little pickle: some_action.html.erb <% @dad.sons.each do |a_son| %> <%= render :partial => 'partial', :locals => { :son => a_son } %> <% end %> _partial.html.erb The son's name is <%= son.name %> The dad's name is <%= son.dad.name %> son.dad makes a database call to fetch the dad! So I would either have to access @dad, which would be going back to a) having partials access instance variables or I would have to pass @dad in locals, changing render :partial to <%= render :partial = 'partial', :locals = { :dad = @dad, :son = a_son } %, and for some reason passing a bunch of vars to my partial makes me feel uncomfortable. Maybe others feel this way as well. Hopefully that made some sense. Looking for some insight into this whole thing... Thanks!

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• loading content from php file with jQuery

  - by Billa

  The following code fetch all data (by clicking a.info link) from a php file "info.php" and prints in the #content div. The problem is that it prints everything from info.php file. Can I possibly select only some part of data from info.php file to load in #content? The reason to ask this question is that, I want to load different data from the same php file for the different links. $("a.info").click(function(){ var id=$(this).attr("id"); $("#box").slideDown("slow"); $.ajax({ type: "POST", data: "id="+$(this).attr("id"), url: "info.php", success: function(html){ $("#content").html(html); } }); }); Html where content is loading: <div id="box"> <div id="content"></div> </div> info.php paragraph1. paragraph2. For example, In the above info.php file, i only want to load paragraph1 in the #content. I hope my question is clear. Any help will be appreciated.

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• CSS - Overlaying one image on top of another

  - by Jack W-H

  Hey folks! I can't best describe this in words, so I'll show you with pictures. Here's how my designer intends the Gravatar images to look in the sidebar of our site: Here's the overlay image I made (screenshotted from Photoshop): Here's how it looks right now... Not quite ideal, I think you'll agree. This is the CSS code I am using: .gravatarsidebar { float:left; padding:0px; width:70px; } .gravataroverlay { width:68px; height:68px; background-image: url('http://localhost:8888/images/gravataroverlay.png'); } And here's the XHTML (and a sprinkle of PHP to fetch the Gravatar based on the user's email address, which is fetched from our database): <div class="gravataroverlay"></div> <div class="gravatarsidebar"> <?php $gravatar_link = 'http://www.gravatar.com/avatar/' . md5($email) . '?s=68'; echo '<img src="' . $gravatar_link . '" alt="Gravatar" />'; ?> </div> So what can I do? I can't use relative positioning as it makes the word 'Search' in the div below stay moved to the right. Thanks for your help! Jack

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• How to check for server side update in iPhone application Web service request

  - by Nirmal

  Hello All.... I have kind of Listing application for iPhone application, which always calling a web service to my php server and fetching the data and displaying it onto iPhone screen. Now, the thing to consider in this scenario is, my iPhone application everytime requesting on the server and fetching the data. But now my requirement is like I want to replace following set of actions with above one : - Everytime when my application is launched in iPhone, it should check for the new data at the server`. - And if server replies "true" then only my iPhone application will made a request to fetch the data. - In case of "false", my iPhone application will display the data which is already cached in local phone memory. Now to implement this scenario at server side (which has php, mysql), I am planning with the following solution : Table : tblNewerData id newDataFlag == ============ 1 true Trigger : tgrUpdateNewData Above trigger will update the tblNewerData - newDataFlag field on Insert case of my main table. And every time my iPhone app will request for tblNewerData-newDataFlag field, and if it found true then only it will create new request, and if it founds false then the cached version of data will be displayed. So, I want to know that, is it the correct way to do so ? or else any other smart option available ? Thanks in advance.

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• C#: WebBrowser.Navigated Only Fires when I MessageBox.Show();

  - by tsilb

  I have a WebBrowser control which is being instantiated dynamically from a background STA thread because the parent thread is a BackgroundWorker and has lots of other things to do. The problem is that the Navigated event never fires, unless I pop a MessageBox.Show() in the method that told it to .Navigate(). I shall explain: ThreadStart ts = new ThreadStart(GetLandingPageContent_ChildThread); Thread t = new Thread(ts); t.SetApartmentState(ApartmentState.STA); t.Name = "Mailbox Processor"; t.Start(); protected void GetLandingPageContent_ChildThread() { WebBrowser wb = new WebBrowser(); wb.Navigated += new WebBrowserNavigatedEventHandler(wb_Navigated); wb.Navigate(_url); MessageBox.Show("W00t"); } protected void wb_Navigated(object sender, WebBrowserNavigatedEventArgs e) { WebBrowser wb = (WebBrowser)sender; // Breakpoint HtmlDocument hDoc = wb.Document; } This works fine; but the messagebox will get in the way since this is an automation app. When I remove the MessageBox.Show(), the WebBrowser.Navigated event never fires. I've tried supplanting this line with a Thread.Sleep(), and by suspending the parent thread. Once I get this out of the way, I intend to Suspend the parent thread while the WebBrowser is doing its job and find some way of passing the resulting HTML back to the parent thread so it can continue with further logic. Why does it do this? How can I fix it? If someone can provide me with a way to fetch the content of a web page, fill out some data, and return the content of the page on the other side of the submit button, all against a webserver that doesn't support POST verbs nor passing data via QueryString, I'll also accept that answer as this whole exercise will have been unneccessary.

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• PHP's PDO Prepare Method Fails While in a Loop

  - by Andrew G. Johnson

  Given the following code: // Connect to MySQL up here $example_query = $database->prepare('SELECT * FROM table2'); if ($example_query === false) die('prepare failed'); $query = $database->prepare('SELECT * FROM table1'); $query->execute(); while ($results = $query->fetch()) { $example_query = $database->prepare('SELECT * FROM table2'); if ($example_query === false) die('prepare failed'); //it will die here } I obviously attempt to prepare statements to SELET everything from table2 twice. The second one (the one in the WHILE loop) always fails and causes an error. This is only on my production server, developing locally I have no issues so it must be some kind of setting somewhere. My immediate thought is that MySQL has some kind of max_connections setting that is set to 1 and a connection is kept open until the WHILE loop is completed so when I try to prepare a new query it says "nope too many connected already" and shits out. Any ideas? EDIT: Yes I know there's no need to do it twice, in my actual code it only gets prepared in the WHILE loop, but like I said that fails on my production server so after some testing I discovered that a simple SELECT * query fails in the WHILE loop but not out of it. The example code I gave is obviously very watered down to just illustrate the issue.

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• Python: fetching SVG file using urllib is returning binary when I need ASCII

  - by Drew Dara-Abrams

  I'm using urllib (in Python) to fetch an SVG file: import urllib urllib.urlopen('http://alpha.vectors.cloudmade.com/BC9A493B41014CAABB98F0471D759707/-122.2487,37.87588,-122.265823,37.868054?styleid=1&viewport=400x231').read() which produces output of the sort: xb6\xf6\x00\xb3\xfb2\xff\xda\xc5\xf2\xc2\x14\xef\xcd\x82\x0b\xdbU\xb0\x81\xcaF\xd8\x1a\xf6\xdf[i)\xba\xcf\x80\xab\xd6\x8c\xe3l_\xe7\n\xed2,\xbdm\xa0_|\xbb\x12\xff\xb6\xf8\xda\xd9\xc3\xd9\t\xde\x9a\xf8\xae\xb3T\xa3\r`\x8a\x08!T\xfb8\x92\x95\x0c\xdd\x8b!\x02P\xea@\x98\x1c^\xc7\xda\\\xec\xe3\xe1\xbe,0\xcd\xbeZ~\x92\xb3\xfa\xdd\xfcbyu\xb8\x83\xbb\xbdS\x0f\x82\x0b\xfe\xf5_\xdawn\xff\xef_\xff\xe5\xfa\x1f?\xbf\xffoZ\x0f\x8b\xbfV\xf4\x04\x00' when I was expecting more like this: <?xml version='1.0' encoding='UTF-8'?> <svg xmlns="http://www.w3.org/2000/svg" xmlns:cm="http://cloudmade.com/" width="400" height="231"> <rect width="100%" height="100%" fill="#eae8dd" opacity="1"/> <g transform="scale(0.209849975856)"> <g transform="translate(13610569, 4561906)" flood-opacity="0.1" flood-color="grey"> <path d="M -13610027.720000000670552 -4562403.660000000149012 I guess this is an issue of binary vs. ASCII. Can anyone help me (a Python newbie) with the appropriate conversion so that I can get on with parsing and manipulating the SVG code?

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• Adding AJAX call to function triggered popup blocker

  - by jerrygarciuh

  Hi folks, I have a client who wants to open variously sized images in a centered popup. I tried to get them to use FancyBox but they don't want interstitial presentation, so... I initially was opening a generic popup which resized and centered onload based on image size but they don't like the shift so I added a PHP script to echo the sizes and used jQuery to fetch the size info to feed into the pop up call. But it appears the delay this causes is setting off all popup blockers. Here is the JS $("#portfolioBigPic").click(function () { var src = $("#portfolioBigPic").attr('src'); var ar = src.split('/'); var fname = ar.pop(); fname = '/g/portfolio/clients/big/' + fname; $.get("imgsize.php", { i: fname}, function(data){ var dim = data.split(","); popit(fname,dim[0],dim[1]); }); }); function popit(img,w,h) { var features = 'width='+w+',height='+h+', toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=0, resizable=1,'; var left = (screen.width/2)-(w/2); var top = 0; features += 'top='+top+',left='+left; bigpic = window.open('portfolioBigPic.php?img='+img, 'bigpic',features); bigpic.focus(); } The only difference between dodging the blockers and failing is that I added the AJAX .get and use it to specify w and h. Any thoughts on how to avoid this? Maybe I should use PHP to get widths and heights of all the big pics and write a JS array of them when this page loads? Am I right that the delay caused by fetching the data is tripping the blockers? Thoughts? Any advice much appreciated. JG

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• Zend Cache is not retrieving cache items after some period of time

  - by Phil

  Hi, I am using Zend Cache with page caching but it seems to miss the cache after a period of time. For a while it is OK, but I come back tomorrow and hit the page, it doesn't fetch the contents from the cache. why? $frontendOptions = array( 'content_type_memorization' => true, // This remembers the headers, needed for images 'lifetime' => NULL, // cache lifetime forever 'automatic_serialization' => true, 'automatic_cleaning_factor' => 0 ); $myPageCache = new Zend_Cache_Frontend_Page(array( 'debug_header' => false, 'automatic_cleaning_factor'=>0, 'content_type_memorization' => true, 'default_options' => array( 'cache' => true, 'cache_with_get_variables' => true, 'cache_with_post_variables' => true, 'cache_with_session_variables' => true, 'cache_with_cookie_variables' => true ))); $backendOptions = array('cache_dir' => '.' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR); $cache = Zend_Cache::factory($myPageCache, 'File', $frontendOptions, $backendOptions); $cacheKey = hash('md5', "cache_" . $cachePath); // cachePath is the key I use for the cache if(!$cache->start($cacheKey)) { I output html here $cache->end(); }

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• git push heroku master gives error ssh: connect to host heroku.com port 22: Connection refused

  - by user1476508

  I'm trying to run the heroku-django tutorial (using ubuntu 12.04) and it seems for some reason i cant push into heroku. here is what happens: yeinhorn@ubuntu:~/hellodjango$ git init Reinitialized existing Git repository in /home/yeinhorn/hellodjango/.git/ yeinhorn@ubuntu:~/hellodjango$ git add . yeinhorn@ubuntu:~/hellodjango$ git commit -m "my first commit" On branch master nothing to commit (working directory clean) yeinhorn@ubuntu:~/hellodjango$ heroku create Creating high-dusk-6308... done, stack is cedar http://high-dusk-6308.herokuapp.com/ | [email protected]:high-dusk-6308.git ! New default stack: Cedar. To use Bamboo, run heroku create -s bamboo. yeinhorn@ubuntu:~/hellodjango$ git remote -v heroku [email protected]:blazing-dusk-8587.git (fetch) heroku [email protected]:blazing-dusk-8587.git (push) yeinhorn@ubuntu:~/hellodjango$ git push heroku master ssh: connect to host heroku.com port 22: Connection refused fatal: The remote end hung up unexpectedly yeinhorn@ubuntu:~/hellodjango$ git push -f heroku ssh: connect to host heroku.com port 22: Connection refused fatal: The remote end hung up unexpectedly also when i run $telnet heroku.com 22 i get Trying 50.19.85.132... Trying 50.19.85.154... Trying 50.19.85.156... telnet: Unable to connect to remote host: Connection refused any ideas?

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• git pull not working

  - by dorelal

  I am not using github. We have git setup on our machine. I created a branch from master called experiment. However when I am trying to do git pull I am getting following message. > git pull You asked me to pull without telling me which branch you want to merge with, and 'branch.experiment.merge' in your configuration file does not tell me either. Please specify which branch you want to merge on the command line and try again (e.g. 'git pull <repository> <refspec>'). See git-pull(1) for details. Here is result of git remote show origin > git remote show origin * remote origin Fetch URL: ssh://git.domain.com/var/git/app.git Push URL: ssh://git.domain.com/var/git/app.git HEAD branch: master Remote branches: experiment tracked master tracked Local branches configured for 'git pull': master merges with remote master Local refs configured for 'git push': experiment pushes to experiment (local out of date) master pushes to master (up to date) As I read the message above experiment is mapped to origin/experiment. And my local repository knows that it is out of date. Then why I am not able to do git pull?

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• Jackson object mapping - map incoming JSON field to protected property in base class

  - by Pete

  We use Jersey/Jackson for our REST application. Incoming JSON strings get mapped to the @Entity objects in the backend by Jackson to be persisted. The problem arises from the base class that we use for all entities. It has a protected id property, which we want to exchange via REST as well so that when we send an object that has dependencies, hibernate will automatically fetch these dependencies by their ids. Howevery, Jackson does not access the setter, even if we override it in the subclass to be public. We also tried using @JsonSetter but to no avail. Probably Jackson just looks at the base class and sees ID is not accessible so it skips setting it... @MappedSuperclass public abstract class AbstractPersistable<PK extends Serializable> implements Persistable<PK> { @Id @GeneratedValue(strategy = GenerationType.AUTO) private PK id; public PK getId() { return id; } protected void setId(final PK id) { this.id = id; } Subclasses: public class A extends AbstractPersistable<Long> { private String name; } public class B extends AbstractPersistable<Long> { private A a; private int value; // getter, setter // make base class setter accessible @Override @JsonSetter("id") public void setId(Long id) { super.setId(id); } } Now if there are some As in our database and we want to create a new B via the REST resource: @POST @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) @Transactional public Response create(B b) { if (b.getA().getId() == null) cry(); } with a JSON String like this {"a":{"id":"1","name":"foo"},"value":"123"}. The incoming B will have the A reference but without an ID. Is there any way to tell Jackson to either ignore the base class setter or tell it to use the subclass setter instead? I've just found out about @JsonTypeInfo but I'm not sure this is what I need or how to use it. Thanks for any help!

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• Error number 13 - Remote access svn with dav_svn failing

  - by C. Ross

  I'm getting the following error on my svn repository <D:error> <C:error/> <m:human-readable errcode="13"> Could not open the requested SVN filesystem </m:human-readable> </D:error> I've followed the instructions from the How to Geek, and the Ubuntu Community Page, but to no success. I've even given the repository 777 permissions. <Location /svn/myProject > # Uncomment this to enable the repository DAV svn # Set this to the path to your repository SVNPath /svn/myProject # Comments # Comments # Comments AuthType Basic AuthName "My Subversion Repository" AuthUserFile /etc/apache2/dav_svn.passwd # More Comments </Location> The permissions follow: drwxrwsrwx 6 www-data webdev 4096 2010-02-11 22:02 /svn/myProject And svnadmin validates the directory $svnadmin verify /svn/myProject/ * Verified revision 0. and I'm accessing the repository at http://ipAddress/svn/myProject Edit: The apache error log says [Fri Feb 12 13:55:59 2010] [error] [client <ip>] (20014)Internal error: Can't open file '/svn/myProject/format': Permission denied [Fri Feb 12 13:55:59 2010] [error] [client <ip>] Could not fetch resource information. [500, #0] [Fri Feb 12 13:55:59 2010] [error] [client <ip>] Could not open the requested SVN filesystem [500, #13] [Fri Feb 12 13:55:59 2010] [error] [client <ip>] Could not open the requested SVN filesystem [500, #13] Even though I confirmed that this file is ugo readable and writable. What am I doing wrong?

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• Create ABPerson Records in a Shared CardDAV (10.6/Server Hosted) AddressBook

  - by Woodster

  Hello, My app presently reads and writes to the local Mac OS X 10.6 client addressbook using the AddressBook.framework. It works fine. 10.6 Server introduced AddressBook Server, which 10.6 clients can connect to by setting up a CardDAV Account. User and Group records can be stored in that account, which is synchronized to the 10.6 server and made available to other clients who access the same CardDAV account. Mail.app is able to autocomplete the email addresses from accounts that are in the local datastore as well as the remote CardDAV datastore. ABPeoplePicker can see both. But, programatically, I'm not getting any CardDAV-based data returned from my queries against the shared AddressBook. I'm not sure if I need to ask it for a different AddressBook, or if I need to modify my fetch-request to indicate that I want it to be able to use the shared data too. My goal is to adapt the current code so that it can read/write to the CardDAV account too, instead of just the local addressbook. Thoughts?

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• multithreading in c#

  - by Lalit Dhake

  Hi, I have console application. In that i have some process that fetch the data from database through different layers ( business and Data access). stores the fetched data in respective objects. Like if data is fetched for student then this data will store (assigned ) to Student object. same for school. and them a delegate call the certain method that generates outputs as per requirement. This process will execute many times say 10 times. Ok? I want to run simultaneously this process. not one will start, it will finish and then second will start. I want after starting 1'st process, just 2'nd , 3rd....10'th must be start. Means it should be multithreading. how can i achieve this ? is that will give me error while connection with data base open and close ? I have tried this concept . but when thread 1'st is starting then data will fetched for thread 1 will stored in its respective (student , school) objects. ok? when simultaneous 2'nd thread starts , but the data is changing of 1'st object ,while control flowing in program. What have to do?

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• Spring-hibernate mapping problem

  - by James

  I have a spring-hibernate application which is failing to map an object properly: basically I have 2 domain objects, a Post and a User. The semantics are that every Post has 1 corresponding User. The Post domain object looks roughly as follows: class Post { private int pId; private String attribute; ... private User user; //getters and setters here } As you can see, Post contains a reference to User. When I load a Post object, I want to corresponding User object to be loaded (lazily - only when its needed). My mapping looks as follows: <class name="com...Post" table="post"> <id name="pId" column="PostId" /> <property name="attribute" column="Attribute" type="java.lang.String" /> <one-to-one name="User" fetch="join" class="com...User"></one-to-one> </class> And of course I have a basic mapping for User set up. As far as my table schema is concerned, I have a table called post with a foreign UserId which links to the user table. I thought this setup should work, BUT when I load a page that forces the lazy loading of the User object, I notice the following Hiberate query being generated: Select ... from post this_ left outer join user user2_ on this.PostId=user2_.UserId ... Obviously this is wrong: it should be joining UserId from post with UserId from user, but instead its incorrectly joining PostId from post (its primary key) with UserId from user. Any ideas? Thanks!

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• how can i set cookie in curl

  - by Sushant Panigrahi

  i am fetching somesite page.. but it display nothing and url address change. example i have typed http://localhost/sushant/EXAMPLE_ROUGH/curl.php in curl page my coding is= $fp = fopen("cookie.txt", "w"); fclose($fp); $agent= 'Mozilla/5.0 (Windows; U; Windows NT 5.1; pl; rv:1.9) Gecko/2008052906 Firefox/3.0'; $ch = curl_init(); curl_setopt($ch, CURLOPT_USERAGENT, $agent); // 2. set the options, including the url curl_setopt($ch, CURLOPT_URL, "http://www.fnacspectacles.com/place-spectacle/manifestation/Grand-spectacle-LE-ROI-LION-ROI4.htm"); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt ($ch, CURLOPT_COOKIEJAR, 'cookie.txt'); curl_setopt($ch, CURLOPT_COOKIEFILE, "cookie.txt"); // 3. execute and fetch the resulting HTML output if(curl_exec($ch) === false) { echo 'Curl error: ' . curl_error($ch); } else echo $output = curl_exec($ch); // 4. free up the curl handle curl_close($ch); ? but it canege url like this.. http://localhost/aide.do?sht=_aide_cookies_ object not found. how can solve these problem help me

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• Annotation to make available generic type

  - by mdma

  Given an generic interface like interface DomainObjectDAO<T> { T newInstance(); add(T t); remove(T t); T findById(int id); // etc... } I'd like to create a subinterface that specifies the type parameter: interface CustomerDAO extends DomainObjectDAO<Customer> { // customer-specific queries - incidental. } The implementation needs to know the actual template parameter type, but of course type erasure means isn't available at runtime. Is there some annotation that I could include to declare the interface type? Something like @GenericParameter(Customer.class) interface CustomerDAO extends DomainObjectDAO<Customer> { } The implementation could then fetch this annotation from the interface and use it as a substitute for runtime generic type access. Some background: This interface is implemented using JDK dynamic proxies as outlined here. The non-generic version of this interface has been working well, but it would be nicer to use generics and not have to create a subinterface for each domain object type. The actual type is needed at runtime to implement the newInstance method, amongst others.

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• JPA ManyToMany referencing issue

  - by dharga

  I have three tables. AvailableOptions and PlanTypeRef with a ManyToMany association table called AvailOptionPlanTypeAssoc. The trimmed down schemas look like this CREATE TABLE [dbo].[AvailableOptions]( [SourceApplication] [char](8) NOT NULL, [OptionId] [int] IDENTITY(1,1) NOT NULL, ... ) CREATE TABLE [dbo].[AvailOptionPlanTypeAssoc]( [SourceApplication] [char](8) NOT NULL, [OptionId] [int] NOT NULL, [PlanTypeCd] [char](2) NOT NULL, ) CREATE TABLE [dbo].[PlanTypeRef]( [PlanTypeCd] [char](2) NOT NULL, [PlanTypeDesc] [varchar](32) NOT NULL, ) And the Java code looks like this. //AvailableOption.java @ManyToMany(cascade={CascadeType.ALL}, fetch=FetchType.EAGER) @JoinTable( name = "AvailOptionPlanTypeAssoc", joinColumns = { @JoinColumn(name = "OptionId"), @JoinColumn(name="SourceApplication")}, inverseJoinColumns=@JoinColumn(name="PlanTypeCd")) List<PlanType> planTypes = new ArrayList<PlanType>(); //PlanType.java @ManyToMany @JoinTable( name = "AvailOptionPlanTypeAssoc", joinColumns = { @JoinColumn(name = "PlanTypeCd")}, inverseJoinColumns={@JoinColumn(name="OptionId"), @JoinColumn(name="SourceApplication")}) List<AvailableOption> options = new ArrayList<AvailableOption>(); The problem arises when making a select on AvailableOptions it joins back onto itself. Note the following SQL code from the backtrace. The second inner join should be on PlanTypeRef. SELECT t0.OptionId, t0.SourceApplication, t2.PlanTypeCd, t2.EffectiveDate, t2.PlanTypeDesc, t2.SysLstTrxDtm, t2.SysLstUpdtUserId, t2.TermDate FROM dbo.AvailableOptions t0 INNER JOIN dbo.AvailOptionPlanTypeAssoc t1 ON t0.OptionId = t1.OptionId AND t0.SourceApplication = t1.SourceApplication INNER JOIN dbo.AvailableOptions t2 ON t1.PlanTypeCd = t2.PlanTypeCd WHERE (t0.SourceApplication = ? AND t0.OptionType = ?) ORDER BY t0.OptionId ASC, t0.SourceApplication ASC [params=(String) testApp, (String) junit0]}

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• Preventing iframe caching in browser

  - by Zarjay

  How do you prevent Firefox and Safari from caching iframe content? I have a simple webpage with an iframe to a page on a different site. Both the outer page and the inner page have HTTP response headers to prevent caching. When I click the "back" button in the browser, the outer page works properly, but no matter what, the browser always retrieves a cache of the iframed page. IE works just fine, but Firefox and Safari are giving me trouble. My webpage looks something like this: <html> <head><!-- stuff --></head> <body> <!-- stuff --> <iframe src="webpage2.html?var=xxx" /> <!-- stuff --> </body> </html> The var variable always changes. Despite the fact that the URL of the iframe has changed (and thus, the browser should be making a new request to that page), the browser just fetches the cached content. I've examined the HTTP requests and responses going back and forth, and I noticed that even if the outer page contains <iframe src="webpage2.html?var=222" />, the browser will still fetch webpage2.html?var=111. Here's what I've tried so far: Changing iframe URL with random var value Adding Expires, Cache-Control, and Pragma headers to outer webpage Adding Expires, Cache-Control, and Pragma headers to inner webpage I'm unable to do any JavaScript tricks because I'm blocked by the same-origin policy. I'm running out of ideas. Does anyone know how to stop the browser from caching the iframed content?

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• Git-svn refuses to create branch on svn repository error: "not in the same repository"

  - by Danny

  I am attempting to create a svn branch using git-svn. The repository was created with --stdlayout. Unfortunately it generates an error stating the "Source and dest appear not to be in the same repository". The error appears to be the result of it not including the username in the source url. $ git svn branch foo-as-bar -m "Attempt to make Foo into Bar." Copying svn+ssh://my.foo.company/r/sandbox/foo/trunk at r1173 to svn+ssh://[email protected]/r/sandbox/foo/branches/foo-as-bar... Trying to use an unsupported feature: Source and dest appear not to be in the same repository (src: 'svn+ssh://my.foo.company/r/sandbox/foo/trunk'; dst: 'svn+ssh://[email protected]/r/sandbox/foo/branches/foo-as-bar') at /home/me/.install/git/libexec/git-core/git-svn line 610 I intially thought this was simply a configuration issue, examination of .git/config doesn't suggest anything incorrect. [svn-remote "svn"] url = svn+ssh://[email protected]/r fetch = sandbox/foo/trunk:refs/remotes/trunk branches = sandbox/foo/branches/*:refs/remotes/* tags = sandbox/foo/tags/*:refs/remotes/tags/* I am using git version 1.6.3.3. Can anyone shed any light on why this might be occuring, and how best to address it?

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