Examples with AggregateState org.apache.hyracks.dataflow.std.group.AggregateState used on opensource projects

Example 1 with AggregateState

use of org.apache.hyracks.dataflow.std.group.AggregateState in project asterixdb by apache.

the class NestedPlansAccumulatingAggregatorFactory method createAggregator.

@Override
public IAggregatorDescriptor createAggregator(IHyracksTaskContext ctx, RecordDescriptor inRecordDesc, RecordDescriptor outRecordDescriptor, int[] keys, int[] partialKeys) throws HyracksDataException {
    final AggregatorOutput outputWriter = new AggregatorOutput(subplans, keyFieldIdx.length, decorFieldIdx.length);
    final NestedTupleSourceRuntime[] pipelines = new NestedTupleSourceRuntime[subplans.length];
    for (int i = 0; i < subplans.length; i++) {
        pipelines[i] = (NestedTupleSourceRuntime) assemblePipeline(subplans[i], outputWriter, ctx);
    }
    return new IAggregatorDescriptor() {

        @Override
        public void init(ArrayTupleBuilder tupleBuilder, IFrameTupleAccessor accessor, int tIndex, AggregateState state) throws HyracksDataException {
            ArrayTupleBuilder tb = outputWriter.getTupleBuilder();
            tb.reset();
            for (int i = 0; i < keyFieldIdx.length; ++i) {
                tb.addField(accessor, tIndex, keyFieldIdx[i]);
            }
            for (int i = 0; i < decorFieldIdx.length; ++i) {
                tb.addField(accessor, tIndex, decorFieldIdx[i]);
            }
            for (int i = 0; i < pipelines.length; ++i) {
                pipelines[i].open();
            }
            // aggregate the first tuple
            for (int i = 0; i < pipelines.length; i++) {
                pipelines[i].writeTuple(accessor.getBuffer(), tIndex);
            }
        }

        @Override
        public void aggregate(IFrameTupleAccessor accessor, int tIndex, IFrameTupleAccessor stateAccessor, int stateTupleIndex, AggregateState state) throws HyracksDataException {
            for (int i = 0; i < pipelines.length; i++) {
                pipelines[i].writeTuple(accessor.getBuffer(), tIndex);
            }
        }

        @Override
        public boolean outputFinalResult(ArrayTupleBuilder tupleBuilder, IFrameTupleAccessor stateAccessor, int tIndex, AggregateState state) throws HyracksDataException {
            for (int i = 0; i < pipelines.length; i++) {
                outputWriter.setInputIdx(i);
                pipelines[i].close();
            }
            // outputWriter.writeTuple(appender);
            tupleBuilder.reset();
            ArrayTupleBuilder tb = outputWriter.getTupleBuilder();
            byte[] data = tb.getByteArray();
            int[] fieldEnds = tb.getFieldEndOffsets();
            int start = 0;
            int offset;
            for (int i = 0; i < fieldEnds.length; i++) {
                if (i > 0) {
                    start = fieldEnds[i - 1];
                }
                offset = fieldEnds[i] - start;
                tupleBuilder.addField(data, start, offset);
            }
            return true;
        }

        @Override
        public AggregateState createAggregateStates() {
            return new AggregateState();
        }

        @Override
        public void reset() {
        }

        @Override
        public boolean outputPartialResult(ArrayTupleBuilder tupleBuilder, IFrameTupleAccessor accessor, int tIndex, AggregateState state) throws HyracksDataException {
            throw new IllegalStateException("this method should not be called");
        }

        @Override
        public void close() {
        }
    };
}

Example 2 with AggregateState

use of org.apache.hyracks.dataflow.std.group.AggregateState in project asterixdb by apache.

the class NestedPlansRunningAggregatorFactory method createAggregator.

/* (non-Javadoc)
     * @see org.apache.hyracks.dataflow.std.group.IAggregatorDescriptorFactory#createAggregator(org.apache.hyracks.api.context.IHyracksTaskContext, org.apache.hyracks.api.dataflow.value.RecordDescriptor, org.apache.hyracks.api.dataflow.value.RecordDescriptor, int[], int[])
     */
@Override
public IAggregatorDescriptor createAggregator(final IHyracksTaskContext ctx, RecordDescriptor inRecordDescriptor, RecordDescriptor outRecordDescriptor, int[] keyFields, int[] keyFieldsInPartialResults, final IFrameWriter writer) throws HyracksDataException {
    final RunningAggregatorOutput outputWriter = new RunningAggregatorOutput(ctx, subplans, keyFieldIdx.length, decorFieldIdx.length, writer);
    final NestedTupleSourceRuntime[] pipelines = new NestedTupleSourceRuntime[subplans.length];
    for (int i = 0; i < subplans.length; i++) {
        pipelines[i] = (NestedTupleSourceRuntime) assemblePipeline(subplans[i], outputWriter, ctx);
    }
    final ArrayTupleBuilder gbyTb = outputWriter.getGroupByTupleBuilder();
    return new IAggregatorDescriptor() {

        @Override
        public void init(ArrayTupleBuilder tupleBuilder, IFrameTupleAccessor accessor, int tIndex, AggregateState state) throws HyracksDataException {
            for (int i = 0; i < pipelines.length; ++i) {
                pipelines[i].open();
            }
            gbyTb.reset();
            for (int i = 0; i < keyFieldIdx.length; ++i) {
                gbyTb.addField(accessor, tIndex, keyFieldIdx[i]);
            }
            for (int i = 0; i < decorFieldIdx.length; ++i) {
                gbyTb.addField(accessor, tIndex, decorFieldIdx[i]);
            }
            // aggregate the first tuple
            for (int i = 0; i < pipelines.length; i++) {
                outputWriter.setInputIdx(i);
                pipelines[i].writeTuple(accessor.getBuffer(), tIndex);
            }
        }

        @Override
        public void aggregate(IFrameTupleAccessor accessor, int tIndex, IFrameTupleAccessor stateAccessor, int stateTupleIndex, AggregateState state) throws HyracksDataException {
            for (int i = 0; i < pipelines.length; i++) {
                outputWriter.setInputIdx(i);
                pipelines[i].writeTuple(accessor.getBuffer(), tIndex);
            }
        }

        @Override
        public boolean outputFinalResult(ArrayTupleBuilder tupleBuilder, IFrameTupleAccessor accessor, int tIndex, AggregateState state) throws HyracksDataException {
            for (int i = 0; i < pipelines.length; ++i) {
                outputWriter.setInputIdx(i);
                pipelines[i].close();
            }
            return false;
        }

        @Override
        public AggregateState createAggregateStates() {
            return new AggregateState();
        }

        @Override
        public void reset() {
        }

        @Override
        public boolean outputPartialResult(ArrayTupleBuilder tupleBuilder, IFrameTupleAccessor accessor, int tIndex, AggregateState state) throws HyracksDataException {
            throw new IllegalStateException("this method should not be called");
        }

        @Override
        public void close() {
        }
    };
}

Example 3 with AggregateState

use of org.apache.hyracks.dataflow.std.group.AggregateState in project asterixdb by apache.

the class SerializableAggregatorDescriptorFactory method createAggregator.

@Override
public IAggregatorDescriptor createAggregator(IHyracksTaskContext ctx, RecordDescriptor inRecordDescriptor, RecordDescriptor outRecordDescriptor, int[] keyFields, final int[] keyFieldsInPartialResults) throws HyracksDataException {
    final int[] keys = keyFields;
    /**
         * one IAggregatorDescriptor instance per Gby operator
         */
    return new IAggregatorDescriptor() {

        private FrameTupleReference ftr = new FrameTupleReference();

        private ISerializedAggregateEvaluator[] aggs = new ISerializedAggregateEvaluator[aggFactories.length];

        private int offsetFieldIndex = keys.length;

        private int[] stateFieldLength = new int[aggFactories.length];

        @Override
        public AggregateState createAggregateStates() {
            return new AggregateState();
        }

        @Override
        public void init(ArrayTupleBuilder tb, IFrameTupleAccessor accessor, int tIndex, AggregateState state) throws HyracksDataException {
            DataOutput output = tb.getDataOutput();
            ftr.reset(accessor, tIndex);
            for (int i = 0; i < aggs.length; i++) {
                int begin = tb.getSize();
                if (aggs[i] == null) {
                    aggs[i] = aggFactories[i].createAggregateEvaluator(ctx);
                }
                aggs[i].init(output);
                tb.addFieldEndOffset();
                stateFieldLength[i] = tb.getSize() - begin;
            }
            // doing initial aggregate
            ftr.reset(accessor, tIndex);
            for (int i = 0; i < aggs.length; i++) {
                byte[] data = tb.getByteArray();
                int prevFieldPos = i + keys.length - 1;
                int start = prevFieldPos >= 0 ? tb.getFieldEndOffsets()[prevFieldPos] : 0;
                aggs[i].step(ftr, data, start, stateFieldLength[i]);
            }
        }

        @Override
        public void aggregate(IFrameTupleAccessor accessor, int tIndex, IFrameTupleAccessor stateAccessor, int stateTupleIndex, AggregateState state) throws HyracksDataException {
            ftr.reset(accessor, tIndex);
            int stateTupleStart = stateAccessor.getTupleStartOffset(stateTupleIndex);
            int fieldSlotLength = stateAccessor.getFieldSlotsLength();
            for (int i = 0; i < aggs.length; i++) {
                byte[] data = stateAccessor.getBuffer().array();
                int start = stateAccessor.getFieldStartOffset(stateTupleIndex, i + keys.length) + stateTupleStart + fieldSlotLength;
                aggs[i].step(ftr, data, start, stateFieldLength[i]);
            }
        }

        @Override
        public boolean outputPartialResult(ArrayTupleBuilder tb, IFrameTupleAccessor stateAccessor, int tIndex, AggregateState state) throws HyracksDataException {
            byte[] data = stateAccessor.getBuffer().array();
            int startOffset = stateAccessor.getTupleStartOffset(tIndex);
            int aggFieldOffset = stateAccessor.getFieldStartOffset(tIndex, offsetFieldIndex);
            int refOffset = startOffset + stateAccessor.getFieldSlotsLength() + aggFieldOffset;
            int start = refOffset;
            for (int i = 0; i < aggs.length; i++) {
                aggs[i].finishPartial(data, start, stateFieldLength[i], tb.getDataOutput());
                start += stateFieldLength[i];
                tb.addFieldEndOffset();
            }
            return true;
        }

        @Override
        public boolean outputFinalResult(ArrayTupleBuilder tb, IFrameTupleAccessor stateAccessor, int tIndex, AggregateState state) throws HyracksDataException {
            byte[] data = stateAccessor.getBuffer().array();
            int startOffset = stateAccessor.getTupleStartOffset(tIndex);
            int aggFieldOffset = stateAccessor.getFieldStartOffset(tIndex, offsetFieldIndex);
            int refOffset = startOffset + stateAccessor.getFieldSlotsLength() + aggFieldOffset;
            int start = refOffset;
            for (int i = 0; i < aggs.length; i++) {
                aggs[i].finish(data, start, stateFieldLength[i], tb.getDataOutput());
                start += stateFieldLength[i];
                tb.addFieldEndOffset();
            }
            return true;
        }

        @Override
        public void reset() {
        }

        @Override
        public void close() {
            reset();
        }
    };
}

Example 4 with AggregateState

use of org.apache.hyracks.dataflow.std.group.AggregateState in project asterixdb by apache.

the class AvgFieldGroupAggregatorFactory method createAggregator.

/*
     * (non-Javadoc)
     *
     * @see org.apache.hyracks.dataflow.std.aggregations.
     * IFieldAggregateDescriptorFactory
     * #createAggregator(org.apache.hyracks.api.context.IHyracksTaskContext,
     * org.apache.hyracks.api.dataflow.value.RecordDescriptor,
     * org.apache.hyracks.api.dataflow.value.RecordDescriptor)
     */
@Override
public IFieldAggregateDescriptor createAggregator(IHyracksTaskContext ctx, RecordDescriptor inRecordDescriptor, RecordDescriptor outRecordDescriptor) throws HyracksDataException {
    return new IFieldAggregateDescriptor() {

        @Override
        public void reset() {
        }

        @Override
        public void outputPartialResult(DataOutput fieldOutput, byte[] data, int offset, AggregateState state) throws HyracksDataException {
            int sum, count;
            if (!useObjectState) {
                sum = IntegerPointable.getInteger(data, offset);
                count = IntegerPointable.getInteger(data, offset + 4);
            } else {
                Integer[] fields = (Integer[]) state.state;
                sum = fields[0];
                count = fields[1];
            }
            try {
                fieldOutput.writeInt(sum);
                fieldOutput.writeInt(count);
            } catch (IOException e) {
                throw new HyracksDataException("I/O exception when writing aggregation to the output buffer.");
            }
        }

        @Override
        public void outputFinalResult(DataOutput fieldOutput, byte[] data, int offset, AggregateState state) throws HyracksDataException {
            int sum, count;
            if (!useObjectState) {
                sum = IntegerPointable.getInteger(data, offset);
                count = IntegerPointable.getInteger(data, offset + 4);
            } else {
                Integer[] fields = (Integer[]) state.state;
                sum = fields[0];
                count = fields[1];
            }
            try {
                fieldOutput.writeFloat((float) sum / count);
            } catch (IOException e) {
                throw new HyracksDataException("I/O exception when writing aggregation to the output buffer.");
            }
        }

        @Override
        public void init(IFrameTupleAccessor accessor, int tIndex, DataOutput fieldOutput, AggregateState state) throws HyracksDataException {
            int sum = 0;
            int count = 0;
            int tupleOffset = accessor.getTupleStartOffset(tIndex);
            int fieldStart = accessor.getFieldStartOffset(tIndex, aggField);
            sum += IntegerPointable.getInteger(accessor.getBuffer().array(), tupleOffset + accessor.getFieldSlotsLength() + fieldStart);
            count += 1;
            if (!useObjectState) {
                try {
                    fieldOutput.writeInt(sum);
                    fieldOutput.writeInt(count);
                } catch (IOException e) {
                    throw new HyracksDataException("I/O exception when initializing the aggregator.");
                }
            } else {
                state.state = new Integer[] { sum, count };
            }
        }

        @Override
        public void close() {
        // TODO Auto-generated method stub
        }

        @Override
        public void aggregate(IFrameTupleAccessor accessor, int tIndex, byte[] data, int offset, AggregateState state) throws HyracksDataException {
            int sum = 0, count = 0;
            int tupleOffset = accessor.getTupleStartOffset(tIndex);
            int fieldStart = accessor.getFieldStartOffset(tIndex, aggField);
            sum += IntegerPointable.getInteger(accessor.getBuffer().array(), tupleOffset + accessor.getFieldSlotsLength() + fieldStart);
            count += 1;
            if (!useObjectState) {
                ByteBuffer buf = ByteBuffer.wrap(data);
                sum += buf.getInt(offset);
                count += buf.getInt(offset + 4);
                buf.putInt(offset, sum);
                buf.putInt(offset + 4, count);
            } else {
                Integer[] fields = (Integer[]) state.state;
                sum += fields[0];
                count += fields[1];
                state.state = new Integer[] { sum, count };
            }
        }

        @Override
        public boolean needsObjectState() {
            return useObjectState;
        }

        @Override
        public boolean needsBinaryState() {
            return !useObjectState;
        }

        @Override
        public AggregateState createState() {
            return new AggregateState(new Integer[] { 0, 0 });
        }
    };
}

Example 5 with AggregateState

use of org.apache.hyracks.dataflow.std.group.AggregateState in project asterixdb by apache.

the class CountFieldAggregatorFactory method createAggregator.

/*
     * (non-Javadoc)
     *
     * @see org.apache.hyracks.dataflow.std.aggregations.
     * IFieldAggregateDescriptorFactory
     * #createAggregator(org.apache.hyracks.api.context.IHyracksTaskContext,
     * org.apache.hyracks.api.dataflow.value.RecordDescriptor,
     * org.apache.hyracks.api.dataflow.value.RecordDescriptor)
     */
@Override
public IFieldAggregateDescriptor createAggregator(IHyracksTaskContext ctx, RecordDescriptor inRecordDescriptor, RecordDescriptor outRecordDescriptor) throws HyracksDataException {
    return new IFieldAggregateDescriptor() {

        @Override
        public void reset() {
        }

        @Override
        public void outputPartialResult(DataOutput fieldOutput, byte[] data, int offset, AggregateState state) throws HyracksDataException {
            int count;
            if (!useObjectState) {
                count = IntegerPointable.getInteger(data, offset);
            } else {
                count = (Integer) state.state;
            }
            try {
                fieldOutput.writeInt(count);
            } catch (IOException e) {
                throw new HyracksDataException("I/O exception when writing aggregation to the output buffer.");
            }
        }

        @Override
        public void outputFinalResult(DataOutput fieldOutput, byte[] data, int offset, AggregateState state) throws HyracksDataException {
            int count;
            if (!useObjectState) {
                count = IntegerPointable.getInteger(data, offset);
            } else {
                count = (Integer) state.state;
            }
            try {
                fieldOutput.writeInt(count);
            } catch (IOException e) {
                throw new HyracksDataException("I/O exception when writing aggregation to the output buffer.");
            }
        }

        @Override
        public void init(IFrameTupleAccessor accessor, int tIndex, DataOutput fieldOutput, AggregateState state) throws HyracksDataException {
            int count = 1;
            if (!useObjectState) {
                try {
                    fieldOutput.writeInt(count);
                } catch (IOException e) {
                    throw new HyracksDataException("I/O exception when initializing the aggregator.");
                }
            } else {
                state.state = count;
            }
        }

        public boolean needsObjectState() {
            return useObjectState;
        }

        public boolean needsBinaryState() {
            return !useObjectState;
        }

        public AggregateState createState() {
            return new AggregateState(new Integer(0));
        }

        @Override
        public void close() {
        }

        @Override
        public void aggregate(IFrameTupleAccessor accessor, int tIndex, byte[] data, int offset, AggregateState state) throws HyracksDataException {
            int count = 1;
            if (!useObjectState) {
                ByteBuffer buf = ByteBuffer.wrap(data);
                count += buf.getInt(offset);
                buf.putInt(offset, count);
            } else {
                count += (Integer) state.state;
                state.state = count;
            }
        }
    };
}