Examples with AggregationMetadata com.facebook.presto.operator.aggregation.AggregationMetadata used on opensource projects

Example 6 with AggregationMetadata

use of com.facebook.presto.operator.aggregation.AggregationMetadata in project presto by prestodb.

the class MultimapAggregationFunction method generateAggregation.

private InternalAggregationFunction generateAggregation(Type keyType, Type valueType, Type outputType) {
    DynamicClassLoader classLoader = new DynamicClassLoader(MultimapAggregationFunction.class.getClassLoader());
    List<Type> inputTypes = ImmutableList.of(keyType, valueType);
    MultimapAggregationStateSerializer stateSerializer = new MultimapAggregationStateSerializer(keyType, valueType);
    Type intermediateType = stateSerializer.getSerializedType();
    AggregationMetadata metadata = new AggregationMetadata(generateAggregationName(NAME, outputType.getTypeSignature(), inputTypes.stream().map(Type::getTypeSignature).collect(toImmutableList())), createInputParameterMetadata(keyType, valueType), INPUT_FUNCTION, COMBINE_FUNCTION, OUTPUT_FUNCTION.bindTo(keyType).bindTo(valueType), ImmutableList.of(new AccumulatorStateDescriptor(MultimapAggregationState.class, stateSerializer, new MultimapAggregationStateFactory(keyType, valueType, groupMode))), outputType);
    GenericAccumulatorFactoryBinder factory = AccumulatorCompiler.generateAccumulatorFactoryBinder(metadata, classLoader);
    return new InternalAggregationFunction(NAME, inputTypes, ImmutableList.of(intermediateType), outputType, true, true, factory);
}

Example 7 with AggregationMetadata

use of com.facebook.presto.operator.aggregation.AggregationMetadata in project presto by prestodb.

the class SetAggregationFunction method generateAggregation.

private static InternalAggregationFunction generateAggregation(Type type, ArrayType outputType) {
    DynamicClassLoader classLoader = new DynamicClassLoader(SetAggregationFunction.class.getClassLoader());
    List<Type> inputTypes = ImmutableList.of(type);
    AccumulatorStateSerializer<?> stateSerializer = new SetAggregationStateSerializer(outputType);
    AccumulatorStateFactory<?> stateFactory = new SetAggregationStateFactory(type);
    Type intermediateType = stateSerializer.getSerializedType();
    List<ParameterMetadata> inputParameterMetadata = createInputParameterMetadata(type);
    Class<? extends AccumulatorState> stateInterface = SetAggregationState.class;
    AggregationMetadata metadata = new AggregationMetadata(generateAggregationName(NAME, outputType.getTypeSignature(), inputTypes.stream().map(Type::getTypeSignature).collect(toImmutableList())), inputParameterMetadata, INPUT_FUNCTION.bindTo(type), COMBINE_FUNCTION, OUTPUT_FUNCTION, ImmutableList.of(new AccumulatorStateDescriptor(stateInterface, stateSerializer, stateFactory)), outputType);
    GenericAccumulatorFactoryBinder factory = AccumulatorCompiler.generateAccumulatorFactoryBinder(metadata, classLoader);
    return new InternalAggregationFunction(NAME, inputTypes, ImmutableList.of(intermediateType), outputType, true, true, factory);
}

Example 8 with AggregationMetadata

use of com.facebook.presto.operator.aggregation.AggregationMetadata in project presto by prestodb.

the class Histogram method generateAggregation.

private static InternalAggregationFunction generateAggregation(String functionName, Type keyType, Type outputType, HistogramGroupImplementation groupMode) {
    DynamicClassLoader classLoader = new DynamicClassLoader(Histogram.class.getClassLoader());
    List<Type> inputTypes = ImmutableList.of(keyType);
    HistogramStateSerializer stateSerializer = new HistogramStateSerializer(keyType, outputType);
    Type intermediateType = stateSerializer.getSerializedType();
    MethodHandle inputFunction = INPUT_FUNCTION.bindTo(keyType);
    MethodHandle outputFunction = OUTPUT_FUNCTION.bindTo(outputType);
    AggregationMetadata metadata = new AggregationMetadata(generateAggregationName(functionName, outputType.getTypeSignature(), inputTypes.stream().map(Type::getTypeSignature).collect(toImmutableList())), createInputParameterMetadata(keyType), inputFunction, COMBINE_FUNCTION, outputFunction, ImmutableList.of(new AccumulatorStateDescriptor(HistogramState.class, stateSerializer, new HistogramStateFactory(keyType, EXPECTED_SIZE_FOR_HASHING, groupMode))), outputType);
    GenericAccumulatorFactoryBinder factory = AccumulatorCompiler.generateAccumulatorFactoryBinder(metadata, classLoader);
    return new InternalAggregationFunction(functionName, inputTypes, ImmutableList.of(intermediateType), outputType, true, false, factory);
}