Bug 186913 [Regression]NPE throws out when open a older release product dataset 07]
Description: [Regression]NPE throws out when open a older release product dataset 07] Build number: 2.2.0.v20070515-0630 Steps to reproduce: 1, Open the attached report design 2, Choose one dataset and double click 3, Click OK button to update the dataset Expected result: The dataset update successfully without exceptions Actual result: NPE throws out Error log: java.lang.NullPointerException at org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.refreshPage(SQLDataSetEditorPage.java:1380) at org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.initializeControl(SQLDataSetEditorPage.java:272) at org.eclipse.birt.report.data.oda.jdbc.ui.editors.SQLDataSetEditorPage.createPageCustomControl(SQLDataSetEditorPage.java:191) at org.eclipse.datatools.connectivity.oda.design.ui.wizards.DataSetWizardPage.createControl(DataSetWizardPage.java:123) at org.eclipse.datatools.connectivity.oda.design.internal.ui.DataSetEditorPageCore.createContents(DataSetEditorPageCore.java:73) at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:233) at org.eclipse.birt.report.designer.data.ui.dataset.PropertyPageWrapper.createPageControl(PropertyPageWrapper.java:45) at org.eclipse.birt.report.designer.data.ui.property.PropertyNode.createPageControl(PropertyNode.java:238) at org.eclipse.birt.report.designer.data.ui.dataset.DataSetEditor.populateDataSetEditor(DataSetEditor.java:623) at org.eclipse.birt.report.designer.data.ui.dataset.DataSetEditor.updateDataSetDesign(DataSetEditor.java:381) at org.eclipse.birt.report.designer.data.ui.dataset.DataSetParametersPage.performOk(DataSetParametersPage.java:848) at org.eclipse.birt.report.designer.data.ui.property.AbstractPropertyDialog.okPressed(AbstractPropertyDialog.java:608) at org.eclipse.birt.report.designer.data.ui.property.AbstractPropertyDialog.okPressed(AbstractPropertyDialog.java:593) at org.eclipse.birt.report.designer.data.ui.dataset.DataSetEditor.okPressed(DataSetEditor.java:504) at org.eclipse.birt.report.designer.data.ui.property.AbstractPropertyDialog.buttonPressed(AbstractPropertyDialog.java:475)
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
{
				if ( event.data instanceof String
						&& !event.data.equals( "null" ) )
					insertText( (String) event.data );
			}
		} );
	}
	/**
	 * Insert a text string into the text area
	 * 
	 * @param text
	 */
	private void insertText( String text )
	{
		if ( text == null )
			return;
		StyledText textWidget = viewer.getTextWidget( );
		int selectionStart = textWidget.getSelection( ).x;
		textWidget.insert( text );
		textWidget.setSelection( selectionStart + text.length( ) );
		textWidget.setFocus( );
	}
	/**
	 * Creates the textual query editor 
	 * @param parent
	 */
	private void createTextualQueryComposite( Composite parent )
	{
		Composite composite = new Composite( parent, SWT.FILL
				| SWT.LEFT_TO_RIGHT );