/*
* validate and setup patternStr
*/
private void validateAndSetupPatternStr(MatchPath evaluator, List<PTFExpressionDef> args)
throws SemanticException {
PTFExpressionDef symboPatternArg = args.get(0);
ObjectInspector symbolPatternArgOI = symboPatternArg.getOI();
if (!ObjectInspectorUtils.isConstantObjectInspector(symbolPatternArgOI)
|| (symbolPatternArgOI.getCategory() != ObjectInspector.Category.PRIMITIVE)
|| ((PrimitiveObjectInspector) symbolPatternArgOI).getPrimitiveCategory()
!= PrimitiveObjectInspector.PrimitiveCategory.STRING) {
throwErrorWithSignature("Currently the symbol Pattern must be a Constant String.");
}
evaluator.patternStr =
((ConstantObjectInspector) symbolPatternArgOI).getWritableConstantValue().toString();
}
