/*
* validate and setup SymbolInfo
*/
private void validateAndSetupSymbolInfo(
MatchPath evaluator, List<PTFExpressionDef> args, int argsNum) throws SemanticException {
int symbolArgsSz = argsNum - 2;
if (symbolArgsSz % 2 != 0) {
throwErrorWithSignature(
"Symbol Name, Expression need to be specified in pairs: "
+ "there are odd number of symbol args");
}
evaluator.symInfo = new SymbolsInfo(symbolArgsSz / 2);
for (int i = 1; i <= symbolArgsSz; i += 2) {
PTFExpressionDef symbolNameArg = args.get(i);
ObjectInspector symbolNameArgOI = symbolNameArg.getOI();
if (!ObjectInspectorUtils.isConstantObjectInspector(symbolNameArgOI)
|| (symbolNameArgOI.getCategory() != ObjectInspector.Category.PRIMITIVE)
|| ((PrimitiveObjectInspector) symbolNameArgOI).getPrimitiveCategory()
!= PrimitiveObjectInspector.PrimitiveCategory.STRING) {
throwErrorWithSignature(
String.format(
"Currently a Symbol Name(%s) must be a Constant String",
symbolNameArg.getExpressionTreeString()));
}
String symbolName =
((ConstantObjectInspector) symbolNameArgOI).getWritableConstantValue().toString();
PTFExpressionDef symolExprArg = args.get(i + 1);
ObjectInspector symolExprArgOI = symolExprArg.getOI();
if ((symolExprArgOI.getCategory() != ObjectInspector.Category.PRIMITIVE)
|| ((PrimitiveObjectInspector) symolExprArgOI).getPrimitiveCategory()
!= PrimitiveObjectInspector.PrimitiveCategory.BOOLEAN) {
throwErrorWithSignature(
String.format(
"Currently a Symbol Expression(%s) " + "must be a boolean expression",
symolExprArg.getExpressionTreeString()));
}
evaluator.symInfo.add(symbolName, symolExprArg);
}
}
