use of io.prestosql.operator.ParametricImplementationsGroup in project hetu-core by openlookeng.
the class AggregationFromAnnotationsParser method parseFunctionDefinition.
public static ParametricAggregation parseFunctionDefinition(Class<?> aggregationDefinition) {
ParametricImplementationsGroup.Builder<AggregationImplementation> implementationsBuilder = ParametricImplementationsGroup.builder();
AggregationHeader header = parseHeader(aggregationDefinition);
for (Class<?> stateClass : getStateClasses(aggregationDefinition)) {
Method combineFunction = getCombineFunction(aggregationDefinition, stateClass);
Optional<Method> aggregationStateSerializerFactory = getAggregationStateSerializerFactory(aggregationDefinition, stateClass);
Method outputFunction = getOnlyElement(getOutputFunctions(aggregationDefinition, stateClass));
for (Method inputFunction : getInputFunctions(aggregationDefinition, stateClass)) {
AggregationImplementation implementation = parseImplementation(aggregationDefinition, header, stateClass, inputFunction, outputFunction, combineFunction, aggregationStateSerializerFactory);
implementationsBuilder.addImplementation(implementation);
}
}
ParametricImplementationsGroup<AggregationImplementation> implementations = implementationsBuilder.build();
return new ParametricAggregation(implementations.getSignature(), header, implementations);
}
use of io.prestosql.operator.ParametricImplementationsGroup in project hetu-core by openlookeng.
the class ScalarFromAnnotationsParser method parseParametricScalar.
private static SqlScalarFunction parseParametricScalar(ScalarHeaderAndMethods scalar, Optional<Constructor<?>> constructor) {
ScalarImplementationHeader header = scalar.getHeader();
Map<SpecializedSignature, ParametricScalarImplementation.Builder> signatures = new HashMap<>();
for (Method method : scalar.getMethods()) {
ParametricScalarImplementation implementation = ParametricScalarImplementation.Parser.parseImplementation(header, method, constructor);
if (!signatures.containsKey(implementation.getSpecializedSignature())) {
ParametricScalarImplementation.Builder builder = new ParametricScalarImplementation.Builder(implementation.getSignature(), implementation.getArgumentNativeContainerTypes(), implementation.getSpecializedTypeParameters(), implementation.getReturnNativeContainerType());
signatures.put(implementation.getSpecializedSignature(), builder);
builder.addChoices(implementation);
} else {
ParametricScalarImplementation.Builder builder = signatures.get(implementation.getSpecializedSignature());
builder.addChoices(implementation);
}
}
ParametricImplementationsGroup.Builder<ParametricScalarImplementation> implementationsBuilder = ParametricImplementationsGroup.builder();
for (ParametricScalarImplementation.Builder implementation : signatures.values()) {
implementationsBuilder.addImplementation(implementation.build());
}
ParametricImplementationsGroup<ParametricScalarImplementation> implementations = implementationsBuilder.build();
Signature scalarSignature = implementations.getSignature();
header.getOperatorType().ifPresent(operatorType -> validateOperator(operatorType, scalarSignature.getReturnType(), scalarSignature.getArgumentTypes()));
return new ParametricScalar(scalarSignature, header.getHeader(), implementations);
}
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