| /* |
| * 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.iotdb.db.queryengine.plan.execution.memory; |
| |
| import org.apache.iotdb.commons.exception.IoTDBException; |
| import org.apache.iotdb.db.queryengine.execution.exchange.source.ISourceHandle; |
| import org.apache.iotdb.mpp.rpc.thrift.TFragmentInstanceId; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| import org.apache.commons.lang3.Validate; |
| import org.apache.tsfile.read.common.block.TsBlock; |
| import org.apache.tsfile.read.common.block.column.TsBlockSerde; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| import static com.google.common.util.concurrent.Futures.immediateFuture; |
| |
| public class MemorySourceHandle implements ISourceHandle { |
| |
| private final TsBlock result; |
| private boolean hasNext; |
| |
| private static final TsBlockSerde serde = new TsBlockSerde(); |
| |
| public MemorySourceHandle(TsBlock result) { |
| Validate.notNull(result, "the TsBlock should not be null when constructing MemorySourceHandle"); |
| this.result = result; |
| this.hasNext = true; |
| } |
| |
| @Override |
| public TFragmentInstanceId getLocalFragmentInstanceId() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public String getLocalPlanNodeId() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public long getBufferRetainedSizeInBytes() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public synchronized TsBlock receive() { |
| hasNext = false; |
| return result; |
| } |
| |
| @Override |
| public synchronized ByteBuffer getSerializedTsBlock() throws IoTDBException { |
| hasNext = false; |
| if (result.isEmpty()) { |
| return null; |
| } else { |
| try { |
| return serde.serialize(result); |
| } catch (IOException e) { |
| throw new IoTDBException(e, TSStatusCode.TSBLOCK_SERIALIZE_ERROR.getStatusCode()); |
| } |
| } |
| } |
| |
| @Override |
| public synchronized boolean isFinished() { |
| return !hasNext; |
| } |
| |
| @Override |
| public ListenableFuture<?> isBlocked() { |
| return immediateFuture(null); |
| } |
| |
| @Override |
| public boolean isAborted() { |
| return false; |
| } |
| |
| @Override |
| public void abort() { |
| // do nothing |
| } |
| |
| @Override |
| public void abort(Throwable t) { |
| abort(); |
| } |
| |
| @Override |
| public void close() { |
| // do nothing |
| } |
| |
| @Override |
| public void setMaxBytesCanReserve(long maxBytesCanReserve) { |
| // do nothing |
| } |
| } |