I figured out the problem. It was a package mismatch that in turn messed up an assumption about the location of the resource in the jar file. Here's what happened: the original ant task class resides in package "com.sas.tools.ant". However, the Creator class I used to wrap this class resides in a different package because of the way I declared it (inside the maven plugin). Now, the ant task class assumes that, in the jar file, the resource it's accessing is in the same directory as the class (com\sas\tools\ant). That's why using getClass().getResourceAsStream() can find the resource file. But that's not the case for the wrapper class, so the assumption failed and the code couldn't find the resource.
To fix this, I put the wrapper class in its own file and set its package to be the same as that of the original Ant task class. Problem solved. Hope this helps somebody else trying to wrap Ant tasks; it was a bear to figure out! :-) Will ----------------------------------------- Will Gwaltney SAS Institute [EMAIL PROTECTED] 919-531-9025 "Nothing is more impossible than to write a book that wins every reader's approval." - Miguel de Cervantes ----------------------------------------- -----Original Message----- From: Will Gwaltney [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 19, 2005 2:49 PM To: Maven Developers List Subject: [m2] wrapping in a M2 plugin an Ant task that accesses a resource in a jar Hi all, I'm writing a maven plugin in java to wrap an Ant taskdef that we use in our build process. I'm having some trouble accessing a resource in the jar that contains the taskdef. The taskdef uses the following code to read the file: -------------------------------- (snip) ---------------------------------------- private static final String DEFAULT_TEMPLATE_FILE_NAME = "RB.template"; . . . BufferedInputStream bis = new BufferedInputStream(getClass().getResourceAsStream(DEFAULT_TEMPLATE_FILE_NAME)); if (bis == null) throw new BuildException(MessageFormat.format("CreateResourceBundleClasses task could not open RB template \"{0}\".", new Object[] { DEFAULT_TEMPLATE_FILE_NAME })); BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file)); byte bytes[] = new byte[Math.max(2048, bis.available())]; -------------------------------- (snip) ---------------------------------------- This works just great when the taskdef is run from Ant, but when I try to run it from my maven plugin, the taskdef code throws in the bis.available() method. Here's stack trace: -------------------------------- (snip) ---------------------------------------- org.apache.maven.plugin.PluginExecutionException: Error generating Resource Bundle code at org.apache.maven.plugin.rb.RBMojo.execute(RBMojo.java:142) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:432) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeMojo(DefaultLifecycleExecutor.java:448) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:144) at org.apache.maven.DefaultMaven.processProject(DefaultMaven.java:212) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:136) at org.apache.maven.cli.MavenCli.main(MavenCli.java:233) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:303) at org.codehaus.classworlds.Launcher.launch(Launcher.java:243) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:416) at org.codehaus.classworlds.Launcher.main(Launcher.java:363) Caused by: java.io.IOException: Stream closed at com.sas.tools.ant.CreateResourceBundleClasses.createResourceBundles(CreateResourceBundleClasses.java:652) at com.sas.tools.ant.CreateResourceBundleClasses.execute(CreateResourceBundleClasses.java:503) at org.apache.maven.plugin.rb.RBMojo.execute(RBMojo.java:129) ... 14 more Caused by: java.io.IOException: Stream closed at com.sas.tools.ant.CreateResourceBundleClasses.getDefaultTemplate(CreateResourceBundleClasses.java:460) at com.sas.tools.ant.CreateResourceBundleClasses.getTemplate(CreateResourceBundleClasses.java:426) at com.sas.tools.ant.CreateResourceBundleClasses.createResourceBundles(CreateResourceBundleClasses.java:580) ... 16 more Caused by: java.io.IOException: Stream closed at java.io.BufferedInputStream.ensureOpen(BufferedInputStream.java:120) at java.io.BufferedInputStream.available(BufferedInputStream.java:336) at com.sas.tools.ant.CreateResourceBundleClasses.getDefaultTemplate(CreateResourceBundleClasses.java:449) ... 18 more -------------------------------- (snip) ---------------------------------------- Note the IOException at the bottom that says "Stream closed". I assume that the getResourceAsStream() method can't find the file, but I can't figure out why it doesn't find it in maven but does find it in ant. BTW, here's the pertinent plugin code that wraps the ant taskdef: -------------------------------- (snip) ---------------------------------------- // create a dummy ant project and target to wrap the task we're invoking final class Creator extends CreateResourceBundleClasses { public Creator() { project = new Project(); project.init(); taskType = "create"; taskName = "create"; target = new Target(); } } Creator creator = new Creator(); creator.execute(); -------------------------------- (snip) ---------------------------------------- Could this be a difference in classloaders between Ant and Maven? A security issue? I'm kind of stumped right now, so any help would be much appreciated! Will ----------------------------------------- Will Gwaltney SAS Institute [EMAIL PROTECTED] 919-531-9025 "Nothing is more impossible than to write a book that wins every reader's approval." - Miguel de Cervantes ----------------------------------------- --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
