rdlc data matrix

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IntelliJ IDEA This commercial IDE is a very powerful Java source editor that also can debug programs, run JUnit tests, and generally get your code working. From a text-editing standpoint, its method completion, pop-up Javadocs, and refactoring can be great for productivity. It supports Ant right out of the box; figure C.2 shows it having run into an error executing a target. Our build file required the Ant nightly build; to get IDEA to execute it, we just dropped new versions of ant.jar, optional.jar, into its lib directory. One of our other build files failed because the property ant.home was not being defined; that is one of those gotchas in IDE-hosted build files that can hurt you. We fixed it in an ugly way with a line in our build file:

Query q = session.createQuery("from Bid where amount > :amount"); q.setParameter( "amount", givenAmount, Hibernate.custom(MonetaryAmountUserType.class) );

We still could not run our deployment tasks due to library dependencies. This exemplifies the problem with tight IDE integration: you end up having to debug the integration more than your build process itself, and sometimes you are constrained by the IDE as to which tasks you can run.1 You can download and purchase the IDE from http://intellij.com. Sun NetBeans/Forte The NetBeans project is Sun s open source Java development platform; the Forte product is a commercial derivative. NetBeans Ant support is pretty good; their developers regularly file Ant bug reports and patches, and this shows in the quality of the integration. Not only can you navigate and execute Ant targets from the build file pane, you can insert new tasks, bring up the Ant documentation, and fill in task and target options using property windows. They also keep reasonably up-to-date with Ant versions, a benefit of their frequent release cycle. See figure C.3. Because this IDE lets you create targets through menus and dialog boxes, it is a great way to learn Ant and to integrate Ant with IDE-based development. Do not attempt to update Ant on NetBeans by dragging, dropping, and renaming files, as it only stops things from working. You can download release and development versions of NetBeans from http://www.netbeans.org.

If you have a JavaBean with seller and description properties, you can call the setProperties() method to bind the query parameters. For example, you can pass query parameters in an instance of the Item class itself:

On a more positive note, someone has recently (January 2002) posted an Ant task which creates an IDEA project as part of the build; this lets someone roll out changes to a project to all team members, reducing the maintenance overhead of IDE-based development.

Item item = new Item(); item.setSeller(seller); item.setDescription(description); String queryString = "from Item item" + " where item.seller = :seller and" + " item.description like :desccription"; session.createQuery(queryString).setProperties(item);

Figure C.3 NetBeans not running a task because of Ant1.4.1 and Java1.4 incompatiblities, but highlighting the error line quite nicely. The pane on the left shows the build file and provides navigation and task creation; the property dialogs let you fill in the values.

The setProperties() binding matches names of JavaBean properties to named parameters in the query string, internally calling setParameter() to guess the Hibernate type and bind the value. In practice, this turns out to be less useful than it sounds, because some common Hibernate types aren t guessable (temporal types, in particular). The parameter binding methods of Query are null-safe. So the following code is legal:

session.createQuery("from User as u where u.username = :name") .setString("name", null);