tag:blogger.com,1999:blog-1131270310109486733Tue, 20 Dec 2011 07:03:30 +0000JPAUsabilityGWTMySQLRESTUnitTestSeleniumHSQLDBforeuiGAEgamesJAX-RSJavaC#prototypingBabyEclipseLinkToplinkcivilization4JAXBEclipseSmartphoneJSONGXTJerseyServletExtJShttp://syrupsucker.blogspot.com/noreply@blogger.com (Jason Drake)Blogger60125tag:blogger.com,1999:blog-1131270310109486733.post-2644221293815861746Fri, 16 Jul 2010 02:28:00 +00002010-07-15T19:51:23.334-07:00UnitTestSeleniumGXTSo I have seen this intermittent error with my selenium tests that drives me up the wall. I'll be running a test and all of a sudden a little "Quick Find" box shows up in the lower left corner in Firefox (not the same as CTRL-F). This appears to be some sort of "old feature" of firefox that is used to quickly find links or something in the page (people have complained about it since Firefox 1.0).http://syrupsucker.blogspot.com/2010/07/firefox-selenium-gxt-and-nasty-quick.htmlnoreply@blogger.com (Jason Drake)13tag:blogger.com,1999:blog-1131270310109486733.post-4369096436342114068Sat, 06 Mar 2010 04:30:00 +00002010-03-05T20:54:56.011-08:00UnitTestSeleniumGXTFirst off, to all those who have patiently asked for my solution of GXT combo boxes and selenium, I do apologize for the long time in coming. While reading my articles is certainly not like being left with a cliff hanger in a movie sequel, I know the pain in waiting anxiously for a solution. Combo Boxes After trying many different ways to get combo boxes to work, I have worked out a pattern http://syrupsucker.blogspot.com/2010/03/gxt-and-selenium-part-2.htmlnoreply@blogger.com (Jason Drake)22tag:blogger.com,1999:blog-1131270310109486733.post-5307560772460536245Fri, 19 Feb 2010 04:24:00 +00002010-02-18T22:50:16.635-08:00foreuiprototypingRecently I have had the pleasure of working together with one of my coworkers on my Stamp Web Editor project (on our personal time of course). Like all skilled professionals she wanted a chance to try and use some new technologies and libraries (like GXT, JPA and Restful Web Services) and I realized I simply could not continue to develop my hobby application without involving more developers. Onehttp://syrupsucker.blogspot.com/2010/02/reviewing-foreui-to-prototype-screens.htmlnoreply@blogger.com (Jason Drake)1tag:blogger.com,1999:blog-1131270310109486733.post-2132619417222121541Mon, 25 Jan 2010 17:09:00 +00002010-01-25T09:33:05.701-08:00SeleniumGXTI recently updated my application to use a menu hooked up to a button in which I display a GXT CheckboxListView of stamp issues. The general idea is that when defining my stamp if there are flaws (I tend to avoid collecting these) I can check-off the flaws in a drop-down like list. I added some selenium tests to capture the correct functionality, and came a across a few interesting points I http://syrupsucker.blogspot.com/2010/01/selenium-and-gxt-checkboxlistview.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-8774703512070945051Mon, 18 Jan 2010 05:01:00 +00002010-01-17T21:10:52.519-08:00EclipseLinkJPAI had to reimage my linux server due to a catastrophic disk failure. In doing so, I had to reinstall tomcat(s) (I use two... one for running my stamp app and the stamp test app (selenium testing) and one for running hudson builds). When my ant script for my stamp application deployed to the "production" tomcat, the start target would fail. I looked in the tomcat logs and saw this: Exceptionhttp://syrupsucker.blogspot.com/2010/01/unable-to-deploy-jpa-to-tomcat-linux.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-186892524401799552Sun, 13 Dec 2009 17:57:00 +00002009-12-13T10:06:44.142-08:00GWTGXTI had to upgrade my GWT version to 2.0.0 with GXT 2.1.0. For the most part this was pretty straight forward. One change that impacted me was the usage of ImageBundle being deprecated. To convert it to the GWT version of doing things I had to do the following: extend com.google.gwt.resources.client.ClientBundle instead of ImageBundle replace @Resource with @Source (from ClientBundle) the returnhttp://syrupsucker.blogspot.com/2009/12/upgrading-to-gwt-20-with-gxt-210.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-2170463250601414786Sat, 12 Dec 2009 05:50:00 +00002009-12-13T10:05:40.737-08:00GWTSeleniumGXTThe following is a list of the issues I ran into when I converted from GXT 2.0.1 to GXT 2.1.0. This is not the complete exhaustive list, however these may provide others with some of the workarounds. My dialogs will cascade events to the form panels and their contents on the dialog. A change was made to Layout which requires all components which are receiving the event to have a layoutData http://syrupsucker.blogspot.com/2009/12/gxt-210-conversion.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-2941516980918395314Sat, 07 Nov 2009 16:56:00 +00002009-11-07T09:00:32.644-08:00gamescivilization4If you install and attempt to run Civilization 4 on Windows 7 you will likely receive an error similiar to the following: I was able to resolve this by downloading and installing the latest released runtime version of DirectX. I suppose if you install and play many games you likely have a newer version of the DirectX runtime, but this game was my favorite and was the first (and currently onlyhttp://syrupsucker.blogspot.com/2009/11/civilization-4-on-windows-7.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-116095133599485120Sat, 06 Jun 2009 21:19:00 +00002009-06-06T14:21:53.873-07:00I mentioned to a colleague a week ago that I wanted to provide better syntax highlighting of source code in my blog entries. He suggested I look at Pygments which is a "generic syntax highlighter for general use in all kinds of software such as forum systems, wikis or other applications that need to prettify source code.". I have to admit, I kind of like it and it is relatively easy to use (http://syrupsucker.blogspot.com/2009/06/pygments-for-source-highlighting.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-6887305779236559610Sat, 06 Jun 2009 05:33:00 +00002009-06-06T14:23:04.299-07:00GWTSeleniumGXTFor those of you who follow the GXT toolkit know, they are currently in the process or preparing for the release of the 2.0 version. I converted to the 2.0 M1 version a few weeks ago and other than a few issues, have been able to continue using my application (and building on it). However when I upgraded to the 2.0 M2 version, I had several key areas that no longer worked. Of course, while I http://syrupsucker.blogspot.com/2009/06/gxt-20-and-selenium.htmlnoreply@blogger.com (Jason Drake)4tag:blogger.com,1999:blog-1131270310109486733.post-6982846800092119621Thu, 28 May 2009 18:28:00 +00002009-06-06T14:23:17.537-07:00SeleniumGXTIn my Stamp Editor I have a tree browser which can browse collections, albums and countries. Directly above this, I have a StoreFilterField in which I can type text to filter the tree. I wanted to write a few selenium tests for this functionality to verify the items are found. The problem I ran into is when I told selenium to type the text, the text would appear but the filter would not get http://syrupsucker.blogspot.com/2009/05/selenium-with-gxt-getting-textfields-to.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-224860933032522940Fri, 27 Mar 2009 04:30:00 +00002009-03-26T21:48:41.129-07:00JSONJAXBRESTJerseyJAX-RSJersey 1.0.2 was released in early February and I just got around to updating to it. I was quite excited to read about the new support for JAXB marshalling to JSON formats (this was introduced I believe in an earlier release but not well detailed). Jakub Podlesak has some nice articles on this functionality on his blog and would recommend reading them. One thing I found, is initially I http://syrupsucker.blogspot.com/2009/03/using-json-with-jaxb-in-new-jersey-102.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-8684651413042299269Sat, 14 Mar 2009 21:05:00 +00002009-03-14T14:09:40.431-07:00GAEThe Google App Engine revolves around keys. If you have references to other objects within your Models, it is important to understand the consequence of accessing the model (to prevent fetch statements). In particular, if you only need to Key of the item (or an attribute on the Key such as the id()) then you want to avoid inflating the persistable. There are numerous suggestions on how to http://syrupsucker.blogspot.com/2009/03/referencing-keys-of-objects-in-dbmodels.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-812433500388626796Tue, 10 Mar 2009 15:47:00 +00002009-03-10T12:29:20.575-07:00GAEGWTIn my previous post GWT and Google App Engine - How to Develop! I outlined an approach one could take to develop a GWT application using the Google App Engine (either from the outset or partially mapping services to GAE over time). In the article I recommended the usage of the HttpRedirectFilter. While this filter worked well using the GAE SDK, I ran into problems connecting to google's remote http://syrupsucker.blogspot.com/2009/03/gwt-and-google-app-engine-update.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-3573059790432085664Sun, 01 Mar 2009 16:45:00 +00002009-03-01T09:38:27.777-08:00GAEGWTEclipseSo I have developed an application in GWT using the GXT library which is currently connecting to a Restful WebService through Tomcat and using JPA to access my MySQL Database. I recently had a disk failure on this system, and so have become acutely aware of the possibility at some point I might want to have my application hosted. I was looking at the Google App Engine, and wanted to experiment http://syrupsucker.blogspot.com/2009/03/gwt-and-google-app-engine-how-to.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-1831019806357600470Wed, 18 Feb 2009 21:48:00 +00002009-02-18T14:08:17.853-08:00MySQLEclipseLinkHSQLDBJPAI had a situation where I needed to write a query which would perform upper case comparisons in a LIKE statement. It took me a while to figure this out, mainly because I didn't realize the right-side of the LIKE statement does not support any of the functions. So given a query like this: SELECT name FROM Countries WHERE name LIKE '%someValue%'; to write this in a valid JPQL format (http://syrupsucker.blogspot.com/2009/02/jpql-and-upper-case-queries-in-like.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-7561278738115066064Sun, 07 Dec 2008 03:03:00 +00002008-12-06T19:08:09.323-08:00In my previous blog I had proposed a design which I could use to dynamically load the tree based on several different modeled objects. I was successful in implementing this. One of the tricks was to ensure the stores were loaded prior to building the tree, and to do this, I wrote a handler which would load each of the stores and listen for the completion of the loads and then build the tree http://syrupsucker.blogspot.com/2008/12/gxt-tree-and-loading-alternative-design_06.htmlnoreply@blogger.com (Jason Drake)1tag:blogger.com,1999:blog-1131270310109486733.post-5799880755752928138Sun, 07 Dec 2008 02:52:00 +00002008-12-06T19:01:32.893-08:00If you run YSLow on one of your web applications, you can obtain some really useful information about improving the performance of your application. One common performance improvement is to set expiration headers on static resources (such as CSS, JS and image files). Setting this header, will help preserve the file in the browser cache, thus preventing reload of the image on subsequent page http://syrupsucker.blogspot.com/2008/12/yslow-and-cache-headers.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-4244626757805776412Tue, 02 Dec 2008 20:41:00 +00002008-12-02T13:15:40.736-08:00GWTGXTExtJSThis is a followup blog to my previous blog entry on GXT Tree and Loading from Restful URLs. While this approach worked, I had concerns over the number of AJAX requests as the tree is fully "expanded". As well, I was considering another possible issue: The BaseModel objects representing the Country, Album objects are used elsewhere in the client (not just within my tree). In this sense, the http://syrupsucker.blogspot.com/2008/12/gxt-tree-and-loading-alternative-design.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-6427217027769886061Tue, 02 Dec 2008 03:44:00 +00002008-12-01T20:37:41.945-08:00GWTRESTExtJSAnyone who has used GXT can tell you that it is very powerful, but examples (and the javadoc) are still few and hard to find. The examples that come with the SDK are great (see Ext GWT 1.2 Samples), but if you need to something beyond these you typically need to figure it out on your own. I hope to be able to write a series of blog articles on some of the designs I have figured out for the http://syrupsucker.blogspot.com/2008/12/gxt-tree-and-loading-with-rest.htmlnoreply@blogger.com (Jason Drake)1tag:blogger.com,1999:blog-1131270310109486733.post-4351125129745295233Sat, 04 Oct 2008 06:11:00 +00002008-10-03T23:19:18.325-07:00ExtJSWhen an ExtJS form is submitted, the successful completion of the asynchronous call will call the function mapped to the success config value. This function will take two parameters form and action. If you are returning JSON from the call you an access this directly from the action parameter. var _form = // ... get your form (eg. formPanel.form) _form.submit({ scope.this, waitMsg:'http://syrupsucker.blogspot.com/2008/10/extjs-actionsubmit-response.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-6065383483035473859Sat, 04 Oct 2008 03:31:00 +00002008-10-03T20:43:29.216-07:00JAXBRESTJAX-RSAs I had previously reported, both RestEasy and Jersey both suffered from the inability to return a collection of JAXB marshalled objects. I was thinking on this a little, and while I could use the JAXBCollection fix in Jersey, it seemed a little bit of a hack until it goes into the 1.0 release. Instead (for now), I have written a few wrapper classes which they themselves are XmlRootElements http://syrupsucker.blogspot.com/2008/10/collections-and-jax-rs.htmlnoreply@blogger.com (Jason Drake)2tag:blogger.com,1999:blog-1131270310109486733.post-2358491800313589256Fri, 03 Oct 2008 21:14:00 +00002008-10-03T14:47:03.169-07:00ServletRESTEclipseJAX-RSSince I was successful deploying Jersey to Tomcat 6.0, I decided to check out RestEasy from JBoss. One issue I ran into with Jersey was it's inability to XML serialize a collection of objects. This is bug ID is 18, and it is fixed for the 1.0 release (however a beta of this does not appear to be available yet), but I decided to see if RestEasy (a non-reference implementation) has the same issuehttp://syrupsucker.blogspot.com/2008/10/deploying-resteasy-in-tomcat-60.htmlnoreply@blogger.com (Jason Drake)0tag:blogger.com,1999:blog-1131270310109486733.post-9209720705100368748Fri, 03 Oct 2008 02:39:00 +00002008-10-02T20:07:21.735-07:00ServletRESTEclipseJAX-RSJersey is a reference implementation for the JAX-RS (JSR-311) for building RESTful Web services. It is nearing approval with the JSR committees. While there are many wikis and articles in using Jersey with Netbeans (downloading the Netbeans 6.1 EE package includes everything you need for JSR-311), there was very little information on using Tomcat 6.0 with Jersey. After piecing together severalhttp://syrupsucker.blogspot.com/2008/10/deploying-jersey-in-tomcat-60.htmlnoreply@blogger.com (Jason Drake)5tag:blogger.com,1999:blog-1131270310109486733.post-8348187042045008617Thu, 02 Oct 2008 16:40:00 +00002008-10-02T12:48:06.076-07:00ServletGWTJavaRESTIf you are a developer who likes to work with Java you may have come to know REST and Restful Web Services. The real advantage of REST is its ability to get rid of some of the "webspeak" and make your URLs a little more platform independent. As a client developer it is much nicer to make a request to http://somehost/Application/stamp/5533 to retrieve stamp 5533 than the traditional http://http://syrupsucker.blogspot.com/2008/10/making-your-servlet-application-urls.htmlnoreply@blogger.com (Jason Drake)1