[richfaces-issues] [JBoss JIRA] Created: (RF-3785) tree: "java heap space" Java Error appear in case using dropListener in tree component.

[Mikhail Vitenkov (JIRA)]

tree: "java heap space" Java Error appear in case using dropListener in tree component.
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                 Key: RF-3785
                 URL: http://jira.jboss.com/jira/browse/RF-3785
             Project: RichFaces
          Issue Type: Bug
    Affects Versions: 3.2.2
         Environment: IE, FF, Opera, Safari
            Reporter: Mikhail Vitenkov
         Assigned To: Denis Morozov


Step 1. Use dropListener attribute following way:
dropListener="#{treeDndBean.onDrop}" inside rich:tree tag.
Java bean:
 public void onDrop(DropEvent dropEvent) {
	System.out.println("onDrop occured.");
	System.out.println("DragValue: " + dropEvent.getDragValue());
	System.out.println("DropValue: " + dropEvent.getDropValue());

	// resolve drag source attributes
	UITreeNode srcNode = (dropEvent.getDraggableSource() instanceof UITreeNode) ? (UITreeNode) dropEvent.getDraggableSource() : null;
	UITree srcTree = srcNode != null ? srcNode.getUITree() : null;
	TreeRowKey dragNodeKey = (dropEvent.getDragValue() instanceof TreeRowKey) ? (TreeRowKey) dropEvent.getDragValue() : null;

	// resolve drag destination attributes
	UITreeNode destNode = (dropEvent.getSource() instanceof UITreeNode) ? (UITreeNode) dropEvent.getSource() : null;
	UITree destTree = destNode != null ? destNode.getUITree() : getTree(dropEvent);
	TreeRowKey dropNodeKey = (dropEvent.getDropValue() instanceof TreeRowKey) ? (TreeRowKey) dropEvent.getDropValue() : null;

	FacesContext context = FacesContext.getCurrentInstance();
	
	if (dropNodeKey != null) {
	    // add destination node for rerender
	    destTree.addRequestKey(dropNodeKey);
	    
		Object state = null;
		TreeNode draggedNode = null;
		if (dragNodeKey != null) { // Drag from this or other tree
		    draggedNode = srcTree.getTreeNode(dragNodeKey);
		    
		    TreeNode parentNode = draggedNode.getParent();
		    // 1. remove node from tree
		    state = srcTree.removeNode(dragNodeKey);
		    // 2. add parent for rerender
		    Object rowKey = srcTree.getTreeNodeRowKey(parentNode);
		    srcTree.addRequestKey(rowKey);		    
		} else if (dropEvent.getDragValue() != null) { // Drag from some drag source
		    draggedNode = new TreeNodeImpl<String>();
		    draggedNode.setData(dropEvent.getDragValue().toString());
		}
		
		// generate new node id
		Object id = getNewId(destTree.getTreeNode(dropNodeKey));
		destTree.addNode(dropNodeKey, draggedNode, id, state);  
	}
	
	AjaxContext ac = AjaxContext.getCurrentInstance();
	// Add destination tree to reRender
	try {
	    ac.addComponentToAjaxRender(destTree);
	} catch (Exception e) {
	    System.err.print(e.getMessage());
	}
	
	// Add source tree to reRender
	try {
	    ac.addComponentToAjaxRender(srcTree);
	} catch (Exception e) {
	    System.err.print(e.getMessage());
	}
	
	System.out.println("+++++");
    }
Step 3. Navigate to the page contained tree rich component with D'n'D API.
Step 4. Several times drag & drop any items from one tree to another.

Actual behavior:

 org.apache.jasper.el.JspELException: /Tree/Tree.jsp(188,4) '#{treeDndBean.onDrop}' java.lang.OutOfMemoryError: Java heap space
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:154)
	at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:260)
	at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:366)
	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:493)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Thread.java:619)
Caused by: javax.faces.el.EvaluationException: org.apache.jasper.el.JspELException: /Tree/Tree.jsp(188,4) '#{treeDndBean.onDrop}' java.lang.OutOfMemoryError: Java heap space
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:56)
	at org.richfaces.component.events.TreeEvents.invokeListenerBindings(TreeEvents.java:78)
	at org.richfaces.component.UITree.broadcast(UITree.java:568)
	at org.richfaces.component.UITreeNode.broadcast(UITreeNode.java:140)
	at org.ajax4jsf.component.UIDataAdaptor.broadcast(UIDataAdaptor.java:1380)
	at org.richfaces.component.UITree.broadcast(UITree.java:550)
	at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:317)
	at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:292)
	at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:249)
	at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:462)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
	... 18 more
Caused by: org.apache.jasper.el.JspELException: /Tree/Tree.jsp(188,4) '#{treeDndBean.onDrop}' java.lang.OutOfMemoryError: Java heap space
	at org.apache.jasper.el.JspMethodExpression.invoke(JspMethodExpression.java:77)
	at org.richfaces.webapp.taglib.MethodBindingMethodExpressionAdaptor.invoke(MethodBindingMethodExpressionAdaptor.java:52)
	... 31 more
Caused by: java.lang.OutOfMemoryError: Java heap space
Jun 24, 2008 10:50:28 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet Faces Servlet threw exception
java.lang.OutOfMemoryError: Java heap space

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