Bug 153712 [regression]NPE when double click table in Edit Data Set window
Description: NPE when double click table in Edit Data Set window Steps to reprdoce: 1. New a data source. 2. New a data set, set cursor after from, double click OFFICES table in Available Items list Expected result: Table is appeared after "from" in query text Actual result: java.lang.NullPointerException at org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.populateEventData(SQLDataSetEditorPage.java:1470) at org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.access$000(SQLDataSetEditorPage.java:95) at org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage$1.mouseDoubleClick(SQLDataSetEditorPage.java:306) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:141) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968) at org.eclipse.jface.window.Window.runEventLoop(Window.java:820) at org.eclipse.jface.window.Window.open(Window.java:796) at org.eclipse.birt.report.designer.ui.actions.NewDataSetAction.run(NewDataSetAction.java:123) at org.eclipse.jface.action.Action.runWithEvent(Action.java:499) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:539) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177) 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.eclipse.core.launcher.Main.invokeFramework(Main.java:336) at org.eclipse.core.launcher.Main.basicRun(Main.java:280) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952)
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
}
			}
		} );
		
		
		Group selectTableGroup = new Group( tablescomposite, SWT.FILL );
		{
			GridLayout groupLayout = new GridLayout( );
			groupLayout.numColumns = 3;
			
			groupLayout.verticalSpacing = 10;
			selectTableGroup.setLayout( groupLayout );
			GridData data = new GridData( GridData.FILL_HORIZONTAL );
			selectTableGroup.setLayoutData( data );
		}
		schemaLabel = new Label( selectTableGroup, SWT.LEFT );
		schemaLabel.setText( JdbcPlugin.getResourceString( "tablepage.label.schema" ) );
		schemaCombo = new Combo( selectTableGroup, SWT.READ_ONLY );
		GridData gd = new GridData( GridData.FILL_HORIZONTAL );
		gd.horizontalSpan = 2;
		schemaCombo.setLayoutData( gd );
		enableSchemaComponent( isSchemaSupported );
		Label FilterLabel = new Label( selectTableGroup, SWT.LEFT );
		FilterLabel.setText( JdbcPlugin.getResourceString( "tablepage.label.filter" ) );
		searchTxt = new Text( selectTableGroup, SWT.BORDER );
		{
			GridData data = new GridData( GridData.FILL_HORIZONTAL );
			data.horizontalSpan = 2;
			searchTxt.setLayoutData( data );
		}