/* * 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(); }