/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.drill.exec.physical.impl;
import org.apache.drill.common.exceptions.ExecutionSetupException;
import org.apache.drill.exec.ops.FragmentContext;
import org.apache.drill.exec.physical.config.MergingReceiverPOP;
import org.apache.drill.exec.physical.impl.mergereceiver.MergingRecordBatch;
import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.work.batch.IncomingBuffers;
import org.apache.drill.exec.work.batch.RawBatchBuffer;
import java.util.List;
public class MergingReceiverCreator implements BatchCreator<MergingReceiverPOP> {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(MergingReceiverCreator.class);
@Override
public RecordBatch getBatch(FragmentContext context,
MergingReceiverPOP receiver,
List<RecordBatch> children)
throws ExecutionSetupException {
assert children == null || children.isEmpty();
IncomingBuffers bufHolder = context.getBuffers();
assert bufHolder != null : "IncomingBuffers must be defined for any place a receiver is declared.";
RawBatchBuffer[] buffers = bufHolder.getBuffers(receiver.getOppositeMajorFragmentId());
return new MergingRecordBatch(context, receiver, buffers);
}
}