Bug 122254 Not Like operator is missing in the Filter tab of Data Set window
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
public IBaseDataSetDesign createDataSetDesign( DataSetHandle dataSet )
			throws BirtException
	{
		if ( dataSet instanceof OdaDataSetHandle )
			return newExtendedDataSet( ( OdaDataSetHandle ) dataSet,
					context );
		if ( dataSet instanceof ScriptDataSetHandle )
			return newScriptDataSet( ( ScriptDataSetHandle ) dataSet,
					context );
		
		assert false;
		return null;
	}
	/**
	 * Evaluates a property binding Javascript expression
	 */
	String evaluatePropertyBindingExpr( String expr ) throws BirtException
	{
		Object result = JavascriptEvalUtil.evaluateScript( null, jsScope, expr,
				"property binding", 0 );
		return result.toString( );
	}
	IOdaDataSourceDesign newExtendedDataSource( OdaDataSourceHandle source )
			throws BirtException
	{
		OdaDataSourceDesign dteSource = new OdaDataSourceDesign( source
				.getQualifiedName( ) );
		IBaseDataSourceEventHandler eventHandler = new DataSourceScriptExecutor(
				source, context );
		dteSource.setEventHandler( eventHandler );