Bug 186742 [Smoke]Can not create a joint dataset[07]
Description: [Smoke]Can not create a joint dataset[07] Build number: 2.2.0.v20070514-0630 Steps to reproduce: 1, New two datasets ds1 and ds2 2, New a joint dataset 3, Select ds1 as the left dataset Expected result: The dataset can be selected successfully and show all the columns of ds1 Actual result: Error occurs after select the ds1 and no columns list Error log: java.lang.ClassCastException: org.eclipse.jface.wizard.WizardDialog at org.eclipse.birt.report.designer.data.ui.dataset.JointDataSetPage.selectionChanged(JointDataSetPage.java:553) at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:850) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:46) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:193) at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160) at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2039) at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1138) at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1164) at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:227)
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataSetProvider.java
/**
	 * 
	 * @param ds
	 * @param column
	 */
	private void updateModelColumn( DataSetHandle ds, DataSetViewData column )
	{
		PropertyHandle resultSetColumns = ds.getPropertyHandle( DataSetHandle.RESULT_SET_PROP );
		if ( resultSetColumns == null )
			return;
		
		Iterator iterator = resultSetColumns.iterator( );
		if ( iterator == null )
			return;
		while ( iterator.hasNext( ) )
		{
			ResultSetColumnHandle rsColumnHandle = (ResultSetColumnHandle) iterator.next( );
			assert rsColumnHandle.getPosition( ) != null;
			if ( rsColumnHandle.getPosition( ).intValue( ) == column.getPosition( ) )
			{
				if ( rsColumnHandle.getColumnName( ) != null
						&& !rsColumnHandle.getColumnName( )
								.equals( column.getDataSetColumnName( ) ) )
				{
					try
					{
						rsColumnHandle.setColumnName( column.getDataSetColumnName( ) );
					}
					catch ( SemanticException e )
					{