private String findGeneratorForPath(
VariablePathExpression setPath, FORule rule, MappingTask mappingTask) {
List<FormulaVariable> universalVariables = rule.getUniversalFormulaVariables(mappingTask);
TGDGeneratorsMap generatorsMap = rule.getGenerators(mappingTask);
IValueGenerator generator = generatorsMap.getGeneratorForSetPath(setPath);
if (generator == null) {
return "SK_" + setPath.toString() + "()";
}
if (generator instanceof NullValueGenerator) {
return NullValueGenerator.getInstance().toString();
}
SkolemFunctionGenerator skolemGenerator = (SkolemFunctionGenerator) generator;
return skolemGenerator.toStringWithVariableArguments(universalVariables);
}
private String findGeneratorForVariable(
FormulaVariable variable, FORule rule, MappingTask mappingTask) {
List<FormulaVariable> universalVariables =
rule.getUniversalFormulaVariablesInTarget(mappingTask);
TGDGeneratorsMap generatorsMap = rule.getGenerators(mappingTask);
for (VariablePathExpression targetPath : variable.getTargetOccurrencePaths()) {
IValueGenerator generator =
generatorsMap.getGeneratorForLeaf(
targetPath, mappingTask.getTargetProxy().getIntermediateSchema());
if (generator != null && generator instanceof SkolemFunctionGenerator) {
SkolemFunctionGenerator skolemGenerator = (SkolemFunctionGenerator) generator;
return skolemGenerator.toStringWithVariableArguments(universalVariables);
}
}
return NullValueGenerator.getInstance().toString();
// throw new IllegalArgumentException("Unable to find generator for variable: " +
// variable.toLongString() + "\nin rule: " + rule + "\n" +
// SpicyEngineUtility.printVariableList(rule.getExistentialFormulaVariables(mappingTask)) +
// "\nGenerators: " + generatorsMap);
}