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/parser/EngineIRVisitor.java
String value2 = hValue2.getStringValue( );
		String testExpr = hTestExpr.getStringValue( );
		rule.setExpression( oper, value1, value2 );
		if ( testExpr != null && testExpr.length( ) > 0 )
		{
			rule.setTestExpression( testExpr );
		}
		else if ( ( defaultStr != null ) && defaultStr.length( ) > 0 )
		{
			rule.setTestExpression( defaultStr );
		}
		else
		{
			
			return null;
		}
		
		
		StyleDeclaration style = new StyleDeclaration( cssEngine );
		setupStyle( ruleHandle, style );
		
		if ( style.isEmpty( ) )
		{
			return null;
		}
		rule.setStyle( style );
		ConditionalExpression condExpr = new ConditionalExpression( rule
				.getTestExpression( ),
				toDteFilterOperator( rule.getOperator( ) ), rule.getValue1( ),
				rule.getValue2( ) );