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Re: VFS doesn't support scanning
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created by <a href="http://community.jboss.org/people/grossetieg">Guillaume Grossetie</a> in <i>JBoss Microcontainer Development POJO Server</i> - <a href="http://community.jboss.org/message/560683#560683">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>What is the right way to scan classes in a package with VFS ?</p><p>I've tried something like :</p><pre class="jive-pre"><code class="jive-code jive-java">List<Class<? <font color="navy"><b>extends</b></font> Enum<?>>> result = <font color="navy"><b>new</b></font> ArrayList<Class<? <font color="navy"><b>extends</b></font> Enum<?>>>();
ClassLoader cld = Thread.currentThread().getContextClassLoader();
<font color="navy"><b>if</b></font> (<font color="navy"><b>null</b></font> != cld) <font color="navy">{</font>
     <font color="navy"><b>final</b></font> String pkgPath = packageName.replace(<font color="navy">'.'</font>, <font color="navy">'/'</font>);
     URL resource = cld.getResource(pkgPath);
     VirtualFile file = VFS.getChild(resource);
 
     List<VirtualFile> children = file.getChildrenRecursively();
     <font color="navy"><b>for</b></font> (VirtualFile child : children) <font color="navy">{</font>
          <font color="navy"><b>if</b></font> (child.isFile()) <font color="navy">{</font>
               Class<?> clazz = Class.forName(packageName.concat(<font color="red">"."</font>).concat(child.getName().split(<font color="red">"\\."</font>)[0]));
               <font color="navy"><b>if</b></font> (clazz.isEnum()) <font color="navy">{</font>
                    result.add((Class<Enum<?>>) clazz);
               <font color="navy">}</font>
          <font color="navy">}</font>
     <font color="navy">}</font>
<font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But the package isn't a directory and getChildrenRecursively() return an empty list. We, previously in JBoss 4.2.3, used :</p><pre class="jive-pre"><code class="jive-code jive-java">List<Class<? <font color="navy"><b>extends</b></font> Enum<?>>> result = <font color="navy"><b>new</b></font> ArrayList<Class<? <font color="navy"><b>extends</b></font> Enum<?>>>();
ClassLoader cld = Thread.currentThread().getContextClassLoader();
<font color="navy"><b>if</b></font> (<font color="navy"><b>null</b></font> != cld) <font color="navy">{</font>
     String pkgPath = packageName.replace(<font color="navy">'.'</font>, <font color="navy">'/'</font>);
     URL resource = cld.getResource(pkgPath);
     <font color="navy"><b>if</b></font> (<font color="navy"><b>null</b></font> != resource) <font color="navy">{</font>
          <font color="navy"><b>if</b></font> (resource.getProtocol().equals(<font color="red">"jar"</font>)) <font color="navy">{</font>
               <font color="navy"><b>int</b></font> index = resource.getPath().indexOf(<font color="navy">'!'</font>);
               <font color="darkgreen">// on extrait le chemin du jar</font>
               String fullJarPathWithName = resource.getPath().substring(5, index);
               List<Class<? <font color="navy"><b>extends</b></font> Enum<?>>> classes = getEnumClassesFromJar(fullJarPathWithName, packageName, pkgPath);
               <font color="navy"><b>if</b></font> (<font color="navy"><b>null</b></font> != classes) <font color="navy">{</font>
                    result.addAll(classes);
               <font color="navy">}</font>
          <font color="navy">}</font>
     <font color="navy">}</font>
<font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But with VFS the path doesn't contain ! anymore.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>We also tried with a visitor pattern but without success. I've read the article at dzone but some classes doesn't exist anymore (SuffixVisitor in jboss-vfs.3.0.0.CR5.jar).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks in advance.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Guillaume.</p></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/560683#560683">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in JBoss Microcontainer Development POJO Server at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2116">Community</a></p>
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