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  • GWT Compilation

    - by Zeeshan
    Hi, I am facing problem while GWT compilation. I am using ANT build file in which i run 'build' target. when execution comes to 'gwtc' target the compilation sometimes stop or somtime it compiles successfully. Can anyone please tell me what i am doing wrong ? I am using GWT2.0

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  • Chat client with GWT

    - by user284016
    What would be the best way to create a JS chat client with GWT? The bit that I'm having trouble with is the persistence and transfer of the messages. Should I store the messages in a DB and check the db for new messages? Is there a much better way to do this?

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  • Error when running a GWTTestCase using maven gwt plugin

    - by adancu
    Hi, I've created a test which extends GWTTestCase but I'm getting this error: mvn integration-test gwt:test Running com.myproject.test.ui. GwtTestMyFirstTestCase Translatable source found in... [WARN] No source path entries; expect subsequent failures [ERROR] Unable to find type 'java.lang.Object' [ERROR] Hint: Check that your module inherits 'com.google.gwt.core.Core' either directly or indirectly (most often by inheriting module 'com.google.gwt.user.User') Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.1 sec <<< FAILURE! GwtTestMyFirstTestCase.java is in /src/test/java, while the GWT module is located in src/main/java. I assume this shouldn't be a problem. I've done everything required according to http://mojo.codehaus.org/gwt-maven-plugin/user-guide/testing.html and of course that my gwt module already has com.google.gwt.core.Core indirectly imported. http://maven.apache.org/maven-v4_0_0.xsd" 4.0.0 com.myproject main jar 0.0.1-SNAPSHOT Main Module <properties> <gwt.module>com.myproject.MainModule</gwt.module> </properties> <parent> <groupId>com.myproject</groupId> <artifactId>app</artifactId> <version>0.1.0-SNAPSHOT</version> </parent> <dependencies> <dependency> <groupId>com.myproject</groupId> <artifactId>app-commons</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>com.google.gwt</groupId> <artifactId>gwt-dev</artifactId> <version>${gwt.version}</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <configuration> <outputFile>../app/src/main/webapp/WEB-INF/main.tree</outputFile> </configuration> </plugin> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>gwt-maven-plugin</artifactId> <executions> <execution> <goals> <goal>test</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <classesDirectory> ${project.build.directory}/${project.build.finalName}/${gwt.module} </classesDirectory> </configuration> </plugin> </plugins> </build> Here is the test case, located in /src/test/java/com/myproject/test/ui public class GwtTestMyFirstTestCase extends GWTTestCase { @Override public String getModuleName() { return "com.myproject.MainModule"; } public void testSomething() { } } Here is the gwt module I'm trying to test, located in src/main/java/com/myproject/MainModule.gwt.xml: <inherits name='com.myproject.Commons' /> <source path="site" /> <source path="com.myproject.test.ui" /> <set-property name="gwt.suppressNonStaticFinalFieldWarnings" value="true" /> <entry-point class='com.myproject.site.SiteModuleEntry' /> Can anyone give me a hint or two about what I'm doing wrong? Thanks in advance.

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  • Sending persisted JDO instances over GWT-RPC

    - by Ben Daniel
    I've just started learning Google Web Toolkit and finished writing the Stock Watcher tutorial app. Is my thinking correct that if one wants to persist a business object (like a Stock) using JDO and send it back and forth to/from the client over RPC then one has to create two separate classes for that object: One with the JDO annotations for persisting it on the server and another which is serialisable and used over RPC? I notice the Stock Watcher has separate classes and I can theorise why: Otherwise the gwt compiler would try to generate javascript for everything the persisted class referenced like JDO and com.google.blah.users.User, etc Also there may be logic on the server-side class which doesn't apply to the client and vice-versa. I just want to make sure I'm understanding this correctly. I don't want to have to create two versions of all my business object classes which I want to use over RPC if I don't have to.

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  • Example of testing a RPC call using GWT-TestCase with GAE

    - by Stephen Cagle
    How is that for a lot of acronyms! I am having trouble testing GWT's RPC mechanism using GWT's GWTTestCase. I created a class for testing using the junitCreator tool included with GWT. I am attempting to test using the built in Google App Engine using the created "hosted mode" testing profile created by junitCreator. When I run the test, I keep getting errors saying things like Starting HTTP on port 0 HTTP listening on port 49569 The development shell servlet received a request for 'greet' in module 'com.google.gwt.sample.stockwatcher.StockWatcher.JUnit.gwt.xml' [WARN] Resource not found: greet; (could a file be missing from the public path or a <servlet> tag misconfigured in module com.google.gwt.sample.stockwatcher.StockWatcher.JUnit.gwt.xml ?) com.google.gwt.user.client.rpc.StatusCodeException: Cannot find resource 'greet' in the public path of module 'com.google.gwt.sample.stockwatcher.StockWatcher.JUnit' I hope that someone somewhere has successfully run junit test (using GWTTestCase or just plain TestCase) that will allow for the testing of gwt RPC. If this is the case, could you please mention the steps you took, or better yet, just post code that works. Thanks.

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  • What is the best Eclipse GWT plugin?

    - by Johan Pelgrim
    We're going to investigate GWT for our project. When searching for an Eclipse GWT plugin I got many. Google Eclipse Plugin GWT Designer Cypal studio None, run GWT in hosted mode GWT-Tooling Other? In your view, what is the best GWT plugin for Eclipse and why? [27 Nov: Editied to reflect the answers below...]

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  • Override GWT Styling

    - by KevMo
    I had a beautiful pure HTML mockup for a webpage that I am now recreating in GWT. I'm attempting to use the same css in my GWT app, but that's not working well for me. GWT styles seem to override mine. I know I can completely disable the GWT styles, however I would prefer to have the styling for the GWT components that I'm adding (tab panel, button, etc). Is there a way to disable GWT styling, and only enable it for components that I choose?

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  • GWT: Populating a page from datastore using RPC is too slow

    - by Ilya Boyandin
    Is there a way to speed up the population of a page with GWT's UI elements which are generated from data loaded from the datastore? Can I avoid making the unnecessary RPC call when the page is loaded? More details about the problem I am experiencing: There is a page on which I generate a table with names and buttons for a list of entities loaded from the datastore. There is an EntryPoint for the page and in its onModuleLoad() I do something like this: final FlexTable table = new FlexTable(); rpcAsyncService.getAllCandidates(new AsyncCallback<List<Candidate>>() { public void onSuccess(List<Candidate> candidates) { int row = 0; for (Candidate person : candidates) { table.setText(row, 0, person.getName()); table.setWidget(row, 1, new ToggleButton("Yes")); table.setWidget(row, 2, new ToggleButton("No")); row++; } } ... }); This works, but takes more than 30 seconds to load the page with buttons for 300 candidates. This is unacceptable. The app is running on Google App Engine and using the app engine's datastore.

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  • Flex vs GWT again

    - by CK Lee
    Hi all, I am working on a customized web ontology editor (something like http://webprotege.stanford.edu/ which is built by GWT). My backend will be Java+Spring+Hibernate and domain models are in Java. My frontend will be something like WebProtege which requires extensive RPC call. It is quite clear that I should use GWT as I can refer to the open source code. However, due to company policy, I shall consider Flex as well. I understand Flex can remotely invoke Java backend methods via BlazeDS using AMF (Is there a Flex equivalent of GWT-RPC?). I have read discussion on GWT vs Flex vs ?. If I can make full decision sure I will go with GWT. GWT strengths like support right to left characters, support iPhone/iPad, smaller size, support JSON out of the box, support printing are not important considerations for my project. Besides GWT supports Java generic, enum; domain objects can be shared with both GWT client and server; coding are more seamlessly... anyone can suggest other strong reasons that I should only go with GWT? FYI, I have plenty of Java experience but both GWT and Flex are new to me. Thanks.

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  • Ext JS 4: Show all columns in Ext.grid.Panel as custom option

    - by MacGyver
    Is there a function that can be called on an Ext.grid.Panel in ExtJS that will make all columns visible, if some of them are hidden by default? Whenever an end-user needs to show the hidden columns, they need to click each column. Below, I have some code to add a custom menu option when you select a field header. I'd like to execute this function so all columns show. As an example below, I have 'Project ID' and 'User Created' hidden by default. By choosing 'Select All Columns' would turn those columns on, so they show in the list view. listeners: { ... }, afterrender: function() { var menu = this.headerCt.getMenu(); menu.add([{ text: 'Select All Columns', handler: function() { var columnDataIndex = menu.activeHeader.dataIndex; alert('custom item for column "'+columnDataIndex+'" was pressed'); } }]); } } }); =========================== Answer (with code): Here's what I decided to do based on Eric's code below, since hiding all columns was silly. afterrender: function () { var menu = this.headerCt.getMenu(); menu.add([{ text: 'Show All Columns', handler: function () { var columnDataIndex = menu.activeHeader.dataIndex; Ext.each(grid.headerCt.getGridColumns(), function (column) { column.show(); }); } }]); menu.add([{ text: 'Hide All Columns Except This', handler: function () { var columnDataIndex = menu.activeHeader.dataIndex; alert(columnDataIndex); Ext.each(grid.headerCt.getGridColumns(), function (column) { if (column.dataIndex != columnDataIndex) { column.hide(); } }); } }]); }

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  • Using GIN and mvp4g

    - by jjczopek
    I'd like to use gwt-dispatch Command Patter implementation in my app. I'm using also mvp4g. How can I make DefaultDispatchAsync available to inject into my presenters using GIN or make it globally available, so I can access it from my presenters?

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  • how to set(get) cookie value in ext.net

    - by user591587
    scene: when I click item in ext:ComboBox and want to set the item selected value to cookie variable. Finally, after I click ext:Button, the ext:Label get cookie value and display it. But I get a error :Ext.Ajax Communication Failure , any help will be appreciated. aspx: <ext:ComboBox ID="ComboBox1" runat="server" StoreID="Store1" Width="100" Editable="false" DisplayField="name" ValueField="value" Mode="Local" TriggerAction="All`enter code here`" EmptyText="Select a locale..."> ..... aspx.cs protected void lngIndexChanged(object sender, DirectEventArgs e) { //Sets the cookie that is to be used by Global.asax HttpCookie cookie = new HttpCookie("CultureInfo"); cookie.Value = ComboBox1.SelectedItem.Value ; Response.Cookies.Add(cookie); Label1.Text = cookie.Value; //Set the culture and reload for immediate effect. //Future effects are handled by Global.asax Thread.CurrentThread.CurrentCulture = new CultureInfo(ComboBox1.SelectedItem.Value); Thread.CurrentThread.CurrentUICulture = new CultureInfo(ComboBox1.SelectedItem.Value); }

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  • GWT with JDO problem

    - by Maksim
    I just start playing with GWT I'm having a really hard time to make GWT + JAVA + JDO + Google AppEngine working with DataStore. I was trying to follow different tutorial but had no luck. For example I wend to these tutorials: TUT1 TUT2 I was not able to figure out how and what i need to do in order to make this work. Please look at my simple code and tell me what do i need to do so i can persist it to the datastore: 1. ADDRESS ENTITY package com.example.rpccalls.client; import java.io.Serializable; import javax.jdo.annotations.IdGeneratorStrategy; import javax.jdo.annotations.Persistent; import javax.jdo.annotations.PrimaryKey; public class Address implements Serializable{ @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private int addressID; @Persistent private String address1; @Persistent private String address2; @Persistent private String city; @Persistent private String state; @Persistent private String zip; public Address(){} public Address(String a1, String a2, String city, String state, String zip){ this.address1 = a1; this.address2 = a2; this.city = city; this.state = state; this.zip = zip; } /* Setters and Getters */ } 2. PERSON ENTITY package com.example.rpccalls.client; import java.io.Serializable; import java.util.ArrayList; import javax.jdo.annotations.IdGeneratorStrategy; import javax.jdo.annotations.PersistenceCapable; import javax.jdo.annotations.Persistent; import javax.jdo.annotations.PrimaryKey; import com.google.appengine.api.datastore.Key; @PersistenceCapable public class Person implements Serializable{ @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private Key key; @Persistent private String name; @Persistent private int age; @Persistent private char gender; @Persistent ArrayList<Address> addresses; public Person(){} public Person(String name, int age, char gender){ this.name = name; this.age = age; this.gender = gender; } /* Getters and Setters */ } 3. RPCCalls package com.example.rpccalls.client; import java.util.ArrayList; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.TextBox; public class RPCCalls implements EntryPoint { private static final String SERVER_ERROR = "An error occurred while attempting to contact the server. Please check your network connection and try again."; private final RPCCallsServiceAsync rpccallService = GWT.create(RPCCallsService.class); TextBox nameTxt = new TextBox(); Button btnSave = getBtnSave(); public void onModuleLoad() { RootPanel.get("inputName").add(nameTxt); RootPanel.get("btnSave").add(btnSave); } private Button getBtnSave(){ Button btnSave = new Button("SAVE"); btnSave.addClickHandler( new ClickHandler(){ public void onClick(ClickEvent event){ saveData2DB(nameTxt.getText()); } } ); return btnSave; } void saveData2DB(String name){ AsyncCallback<String> callback = new AsyncCallback<String>() { public void onFailure(Throwable caught) { Window.alert("WOOOHOOO, ERROR: " + SERVER_ERROR);

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  • Problem with GWT behind a reverse proxy - either nginx or apache

    - by Don Branson
    I'm having this problem with GWT when it's behind a reverse proxy. The backend app is deployed within a context - let's call it /context. The GWT app works fine when I hit it directly: http://host:8080/context/ I can configure a reverse proxy in front it it. Here's my nginx example: upstream backend { server 127.0.0.1:8080; } ... location / { proxy_pass http://backend/context/; } But, when I run through the reverse proxy, GWT gets confused, saying: 2009-10-04 14:05:41.140:/:WARN: Login: ERROR: The serialization policy file '/C7F5ECA5E3C10B453290DE47D3BE0F0E.gwt.rpc' was not found; did you forget to include it in this deployment? 2009-10-04 14:05:41.140:/:WARN: Login: WARNING: Failed to get the SerializationPolicy 'C7F5ECA5E3C10B453290DE47D3BE0F0E' for module 'https://hostname:444/'; a legacy, 1.3.3 compatible, serialization policy will be used. You may experience SerializationExceptions as a result. 2009-10-04 14:05:41.292:/:WARN: StoryService: ERROR: The serialization policy file '/0445C2D48AEF2FB8CB70C4D4A7849D88.gwt.rpc' was not found; did you forget to include it in this deployment? 2009-10-04 14:05:41.292:/:WARN: StoryService: WARNING: Failed to get the SerializationPolicy '0445C2D48AEF2FB8CB70C4D4A7849D88' for module 'https://hostname:444/'; a legacy, 1.3.3 compatible, serialization policy will be used. You may experience SerializationExceptions as a result. In other words, GWT isn't getting the word that it needs to prepend /context/ hen look for C7F5ECA5E3C10B453290DE47D3BE0F0E.gwt.rpc, but only when the request comes throught proxy. A workaround is to add the context to the url for the web site: location /context/ { proxy_pass http://backend/context/; } but that means the context is now part of the url that the user sees, and that's ugly. Anybody know how to make GWT happy in this case? Software versions: GWT - 1.7.0 (same problem with 1.7.1) Jetty - 6.1.21 (but the same problem existed under tomcat) nginx - 0.7.62 (same problem under apache 2.x) I've looked at the traffic between the proxy and the backend using DonsProxy, but there's nothing noteworthy there.

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  • GWT RPC - Does it do enough to protect against CSRF ?

    - by sri
    GWT's RPC mechanism does the following things on every HTTP Request - Sets two custom request headers - X-GWT-Permutation and X-GWT-Module-Base Sets the content-type as text/x-gwt-rpc; charset=utf-8 The HTTP request is always a POST, and on server side GET methods throw an exception (method not supported). Also, if these headers are not set or have the wrong value, the server fails processing with an exception "possibly CSRF?" or something to that effect. Question is : Is this sufficient to prevent CSRF? Is there a way to set custom headers and change content type in a pure cross-site request forgery method?

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  • GWT : Type of Container

    - by moorsu
    I see that there are two ways of transferring objects from server to client Use the same domain object (Contact.java) as used in the service layer. (I do not use hibernate) Use the HashMap to send the domain object field values in the form of Map with the help of BeanUtilsBean class. For multiple objects, use the List. Similary, use the Map to submit form values from client to server Is there any performance advantage for option 1 over 2?. Is there a way to hide the classname/package name that is sent to the browser if we use option 1?. thanks!.

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  • [ExtJs] Vs [Ext GWT] Vs [SmartGWT]

    - by shafi
    Hi, I am going to start a new application which mainly consist NavigationPane, Grid, Toolbar. Layout should look like this demo page http://www.gwt-ext.com/demo/ I am quite confused which one to use in terms of writing less code, more performant, etc.. Could someone tell the pros and cons of all these technologies. All the while I coded in javascript, so that way ExtJs seems to be the easy one for me to code. But I am curios to try GWT Ext, Is it true that it could do a lot just by writing few lines of java code. For eg: To achieve the layout ( given in above gwt ext demo url), which one should I opt ExtJs or GWT Ext. I read SmartGWT is relatively slower than GwtEXT. Does it have any advantage over GWT EXT. I am also looking for hibernate based data modules ( as my application is going to have many database calls). Anyone of SmartGWT or GWTExt has support for such modules. I came to know that smartgwt doesn't offer all of smartclient enterprise version functionalities, that we are allowed only a few of smartclient features. Will it be an issue? Your response is highly appreciated. Thanks & Regards `Shafi

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  • Refresh backend in GWT development

    - by T.K.
    I am developing a GWT application that uses EJB and other Java EE 6 technology as the backend. I am currently using the GWT 2.0 plugin for Safari. When I change my GWT client side code and save in my IDE (NetBeans), all that's required is a simple reload in the browser for the changes to become active. That works great! However, often I work on the server-side (the EJBs, GWT server code, etc) and then something in on the GWT client side. Any changes done to the server-side do not appear to incrementally deploy to the Glassfish V3 server. Currently I close the GWT Development Mode application, and then recompile the EJBs, and then go back into GWT Development mode. That is tedious. Any better way of doing this? I tried the "deploy on save" option in NetBeans but it does not seem to do the trick.

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  • Gwt-ext. Bean to record and record to bean.

    - by den bardadym
    I write a RIA application and my JPA beans must be decoded to push it in Store. My decisions are: Brute Force. If I have property 'aProp' in bean (and getter/setter for it) i create RecordDef, then Record, then Recrod.set('aProp', bean.getAProp()) and so on.. (it is terrible) I can write generator for creating a Factory of Records (it is my desision and i write it). For example: RecordFactory<User> factory = GWT.create(User.class); //User is entity I now that i need a reflection, BUT GWT have no implementation of reflection (some libraries emulates this, but they builds on generators) Exists the best way? Thanks, Den Bardadym.

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  • GWT Strength compared to other framework??

    - by Noor
    One of the main strength of GWT is to code in java and everything gets compiled and is loaded by several browsers through gwt deferred binding?? Apart from this, i.e. working only on a single code base, do GWT has any other advantage compared to other existing framework?? Edit: I'm trying to say why should we use gwt and not another framework?? What is there in GWT that makes it special for web application development?? What GWT makes for us and another framework or toolkit don't do?? As i said above GWT makes deferred binding which is a plus, so I wanted what other things it do that makes it special and unique??

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  • Threading in GWT (Client)

    - by 8EM
    From what I understand, the entire client side of a GWT application is converted to Javascript when you build, therefore I suppose this question is related to both Javascript and the possibilities that GWT offers. I have a couple of dozen processes that will need to be initiated in my GWT application, each process will then continuously make calls to a server. Does GWT support threading? Does the GWT client side support threading?

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  • Stocks with Ext JS Charts

    An example to display stock indexes in an Ext JS chart. Including an introduction to Ext JS, a simple introductory Ext JS example, and an introduction to the new charts feature. Concludes with a more comprehensive demo showing some more of Ext’s features.

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  • Is it possible to migrate struts/spring based application to GWT?

    - by Satish Pandey
    I am using the combination of spring, spring-security, struts and iBatis in my application. Now I am looking to migrate the struts UI to GWT. The new combination must be spring, spring-security, GWT and iBatis. I applied a layered approach to develop my application. In Controller/UI layer i am using Struts. I want to replace struts and use GWT in Controller/UI layer. Is is possible to use GWT without affecting another layers DAO/BL/SL?

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  • GWT carousel widget

    - by Nils
    Hello, I'm currently working on a GWT project, in which I need to use a "carousel" widget. The carousel widget is supposed to display pieces of information and 2 arrows - when the user clicks on one of the arrow, the content is moved with an animation and replaced with new content. I've been looking through the available widget libs, but the "carousel" widget does not seem to be that available. The only real candidate I found is the gwt-yui-carousel widget (see link below), but this seems to be an overload of ressources - though it does almost exactly what I need, but instead of displaying simple images, I'll have to display, in MVP terms, a view/presenter. Here is the widget running : http://gwt-yui-carousel.googlecode.com/svn/trunk/www/com.gwtyuicarousel.javascriptload.JavaScriptLoad/javascriptload.html (coming from here : http://code.google.com/p/gwt-yui-carousel/ ). Is there a better carousel widget available that I would not know of ? Or should I extend an existing one to create the desired effect ? Would you recommend to use the gwt-yui-carousel (I don't think so) ? If there is no better option, do you think that it would be a good idea to create the widget myself ? Note that I think that the key thing is, here, that I'll have to display presenter/views, which will fetch data in DataBase on arrow clicks and so on - so a customisation of an existing widget would be required, or the chosen widget should be able to display a list of GWT Widgets. Again I don't think that I can use one of the existing usual carousel widgets, since those are not "gwt-oriented" and could not support view/presenters and all this gwt stuff ;) Any answer would be greatly appreciated :) Best regards, Nils

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