[jboss-cvs] JBossAS SVN: r97277 - projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context.

[jboss-cvs-commits at lists.jboss.org]

Author: marius.bogoevici
Date: 2009-12-02 01:18:27 -0500 (Wed, 02 Dec 2009)
New Revision: 97277

Added:
   projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/ContextClassUtil.java
   projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareContextLoaderListener.java
   projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareDispatcherServlet.java
Log:


Added: projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/ContextClassUtil.java
===================================================================
--- projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/ContextClassUtil.java	                        (rev 0)
+++ projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/ContextClassUtil.java	2009-12-02 06:18:27 UTC (rev 97277)
@@ -0,0 +1,45 @@
+package org.jboss.spring.vfs.context;
+
+import org.springframework.context.ApplicationContextException;
+import org.springframework.util.ClassUtils;
+import org.springframework.util.ReflectionUtils;
+
+/**
+ * @author Marius Bogoevici
+ */
+public class ContextClassUtil
+{
+   static final String VFS_APPLICATION_CONTEXT_CLASS_NAME = "org.jboss.spring.vfs.context.VFSXmlWebApplicationContext";
+
+   public static boolean isJBossAS5orHigher()
+   {
+      try
+      {
+         Class jBossVersionClass = VFSAwareContextLoaderListener.class.getClassLoader().loadClass("org.jboss.Version");
+         Object versionObject = ReflectionUtils.invokeMethod(ReflectionUtils.findMethod(jBossVersionClass, "getInstance"), null);
+         Integer majorVersion = (Integer) ReflectionUtils.invokeMethod(ReflectionUtils.findMethod(jBossVersionClass, "getMajor"), versionObject);
+         // For JBoss AS versions 5 and higher
+         if (majorVersion >= 5) {
+            return true;
+         }
+      }
+      catch (ClassNotFoundException e)
+      {
+         // do nothing;
+      }
+      return false;
+   }
+
+   public static Class getVFSWebContextClass()
+   {
+      try
+      {
+            return ClassUtils.forName(VFS_APPLICATION_CONTEXT_CLASS_NAME);
+      }
+      catch (ClassNotFoundException ex)
+      {
+         throw new ApplicationContextException(
+               "Failed to load custom context class [" + VFS_APPLICATION_CONTEXT_CLASS_NAME + "]", ex);
+      }
+   }
+}

Added: projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareContextLoaderListener.java
===================================================================
--- projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareContextLoaderListener.java	                        (rev 0)
+++ projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareContextLoaderListener.java	2009-12-02 06:18:27 UTC (rev 97277)
@@ -0,0 +1,44 @@
+package org.jboss.spring.vfs.context;
+
+import javax.servlet.ServletContext;
+
+import org.springframework.context.ApplicationContextException;
+import org.springframework.web.context.ContextLoader;
+import org.springframework.web.context.ContextLoaderListener;
+
+/**
+ * A VFS-compatible {@link org.springframework.web.context.ContextLoaderListener},
+ * which works transparently in or outside JBoss AS.
+ *
+ * It detects whether the current runtime is JBoss AS in a version later than 5.0.0,
+ * and if that is the case, instantiates a {@link VFSXmlWebApplicationContext}, otherwise
+ * it instantiates a {@link org.springframework.web.context.support.XmlWebApplicationContext}.
+ *  
+ * @author Marius Bogoevici
+ */
+public class VFSAwareContextLoaderListener extends ContextLoaderListener
+{
+
+   @Override
+   protected ContextLoader createContextLoader()
+   {
+      if (!ContextClassUtil.isJBossAS5orHigher())
+      {
+         return super.createContextLoader();
+      }
+      else
+      {
+         return new VFSContextLoader();
+      }
+   }
+
+   private static class VFSContextLoader extends ContextLoader
+   {
+      @Override
+      protected Class determineContextClass(ServletContext servletContext) throws ApplicationContextException
+      {
+         return ContextClassUtil.getVFSWebContextClass();
+
+      }
+   }
+}

Added: projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareDispatcherServlet.java
===================================================================
--- projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareDispatcherServlet.java	                        (rev 0)
+++ projects/snowdrop/branches/1_0/vfs/src/main/java/org/jboss/spring/vfs/context/VFSAwareDispatcherServlet.java	2009-12-02 06:18:27 UTC (rev 97277)
@@ -0,0 +1,26 @@
+package org.jboss.spring.vfs.context;
+
+import org.springframework.web.servlet.DispatcherServlet;
+
+/**
+ * A VFS-compatible {@link org.springframework.web.servlet.DispatcherServlet},
+ * which works transparently in or outside JBoss AS.
+ *
+ * It detects whether the current runtime is JBoss AS in a version later than 5.0.0,
+ * and if that is the case, instantiates a {@link VFSXmlWebApplicationContext}, otherwise
+ * it instantiates a {@link org.springframework.web.context.support.XmlWebApplicationContext}.
+ *
+ * @author Marius Bogoevici
+ */
+public class VFSAwareDispatcherServlet extends DispatcherServlet
+{
+
+   @Override
+   public Class getContextClass()
+   {
+      if (ContextClassUtil.isJBossAS5orHigher())
+         return ContextClassUtil.getVFSWebContextClass();
+      else
+         return super.getContextClass();
+   }
+}