From 90f7efd6af1fd560dc68e5c15a0c1d85315a419e Mon Sep 17 00:00:00 2001
From: wmz7year <ydswcy513@gmail.com>
Date: Wed, 4 Nov 2015 09:50:41 +0800
Subject: [PATCH] 	Fix hazelcast plugin xalan NoClassDefFoundError

	issue:https://github.com/hazelcast/hazelcast/issues/6614
---
 .../jivesoftware/openfire/plugin/HazelcastPlugin.java    | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/plugins/hazelcast/src/java/org/jivesoftware/openfire/plugin/HazelcastPlugin.java b/src/plugins/hazelcast/src/java/org/jivesoftware/openfire/plugin/HazelcastPlugin.java
index 11925ad6e5..89555d5384 100644
--- a/src/plugins/hazelcast/src/java/org/jivesoftware/openfire/plugin/HazelcastPlugin.java
+++ b/src/plugins/hazelcast/src/java/org/jivesoftware/openfire/plugin/HazelcastPlugin.java
@@ -48,6 +48,9 @@ public class HazelcastPlugin extends TimerTask implements Plugin {
     private static final long CLUSTER_STARTUP_DELAY_TIME = 
     		JiveGlobals.getLongProperty("hazelcast.startup.delay.seconds", 5);
     
+    private static final String TRANSFORMERFACTORY = "javax.xml.transform.TransformerFactory";
+    private static String OLDTRANSFORMERFACTORY;
+    
     public void initializePlugin(PluginManager manager, File pluginDirectory) {
     	// start cluster using a separate thread after a short delay
     	// this will allow other plugins to initialize during startup
@@ -72,10 +75,16 @@ public boolean accept(File pathname) {
             logger.warn("Conflicting clustering plugins found; remove Coherence and/or Enterprise jar files");
             throw new IllegalStateException("Clustering plugin configuration conflict (Coherence)");
         }
+        
+        // https://github.com/hazelcast/hazelcast/issues/6614
+        OLDTRANSFORMERFACTORY = System.getProperty(TRANSFORMERFACTORY);
+        System.setProperty(TRANSFORMERFACTORY, "com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl");
+        
         ClusterManager.startup();
 	}
 
     public void destroyPlugin() {
+    	System.setProperty(TRANSFORMERFACTORY, OLDTRANSFORMERFACTORY);
         // Shutdown is initiated by XMPPServer before unloading plugins
     	if (!XMPPServer.getInstance().isShuttingDown()) {
     		ClusterManager.shutdown();