Bug 201030 NPE throws out when preview the attached report design
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/script/ScriptEvalUtil.java
break;
			case IConditionalExpression.OP_TRUE :
				result = isTrueOrFalse( resultObject, Boolean.TRUE );
				break;
			case IConditionalExpression.OP_FALSE :
				result = isTrueOrFalse( resultObject, Boolean.FALSE );
				break;
			case IConditionalExpression.OP_LIKE :
				result = like( resultObject, resultOp[0] );
				break;
			case IConditionalExpression.OP_NOT_LIKE :
				result = !like( resultObject, resultOp[0] );
				break;
				
			case IConditionalExpression.OP_TOP_N :
			case IConditionalExpression.OP_BOTTOM_N :
			case IConditionalExpression.OP_TOP_PERCENT :
			case IConditionalExpression.OP_BOTTOM_PERCENT :
				
				throw new DataException(
						ResourceConstants.UNSUPPORTTED_COND_OPERATOR, "Top/Bottom(N) outside of row filters" );
				
		/*
		 * case IConditionalExpression.OP_ANY : throw new DataException(
		 * ResourceConstants.UNSUPPORTTED_COND_OPERATOR, "ANY" );
		 */
			case IConditionalExpression.OP_MATCH :
				result = match( resultObject, resultOp[0] );
				break;
			case IConditionalExpression.OP_NOT_MATCH :