| /* |
| * 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.execution.operator.schema; |
| |
| import org.apache.iotdb.common.rpc.thrift.TSchemaNode; |
| import org.apache.iotdb.commons.schema.node.MNodeType; |
| import org.apache.iotdb.db.queryengine.common.header.ColumnHeader; |
| import org.apache.iotdb.db.queryengine.common.header.ColumnHeaderConstant; |
| import org.apache.iotdb.db.queryengine.execution.operator.Operator; |
| import org.apache.iotdb.db.queryengine.execution.operator.OperatorContext; |
| import org.apache.iotdb.db.queryengine.execution.operator.process.ProcessOperator; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| import org.apache.tsfile.common.conf.TSFileConfig; |
| import org.apache.tsfile.common.conf.TSFileDescriptor; |
| import org.apache.tsfile.enums.TSDataType; |
| import org.apache.tsfile.read.common.block.TsBlock; |
| import org.apache.tsfile.read.common.block.TsBlockBuilder; |
| import org.apache.tsfile.utils.Binary; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.TreeSet; |
| import java.util.stream.Collectors; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| public class NodeManageMemoryMergeOperator implements ProcessOperator { |
| private final OperatorContext operatorContext; |
| private final Set<TSchemaNode> data; |
| private final Set<String> nameSet; |
| private final Operator child; |
| private boolean isReadingMemory; |
| private final List<TSDataType> outputDataTypes; |
| |
| private static final int DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES = |
| TSFileDescriptor.getInstance().getConfig().getMaxTsBlockSizeInBytes(); |
| |
| public NodeManageMemoryMergeOperator( |
| OperatorContext operatorContext, Set<TSchemaNode> data, Operator child) { |
| this.operatorContext = requireNonNull(operatorContext, "operatorContext is null"); |
| this.data = data; |
| nameSet = data.stream().map(TSchemaNode::getNodeName).collect(Collectors.toSet()); |
| this.child = requireNonNull(child, "child operator is null"); |
| isReadingMemory = true; |
| this.outputDataTypes = |
| ColumnHeaderConstant.showChildPathsColumnHeaders.stream() |
| .map(ColumnHeader::getColumnType) |
| .collect(Collectors.toList()); |
| } |
| |
| @Override |
| public OperatorContext getOperatorContext() { |
| return operatorContext; |
| } |
| |
| @Override |
| public ListenableFuture<?> isBlocked() { |
| return isReadingMemory ? NOT_BLOCKED : child.isBlocked(); |
| } |
| |
| @Override |
| public TsBlock next() throws Exception { |
| if (isReadingMemory) { |
| isReadingMemory = false; |
| return transferToTsBlock(data); |
| } else { |
| TsBlock block = child.nextWithTimer(); |
| if (block == null) { |
| return null; |
| } |
| |
| Set<TSchemaNode> nodePaths = new HashSet<>(); |
| for (int i = 0; i < block.getPositionCount(); i++) { |
| TSchemaNode schemaNode = |
| new TSchemaNode( |
| block.getColumn(0).getBinary(i).toString(), |
| Byte.parseByte(block.getColumn(1).getBinary(i).toString())); |
| if (!nameSet.contains(schemaNode.getNodeName())) { |
| nodePaths.add(schemaNode); |
| nameSet.add(schemaNode.getNodeName()); |
| } |
| } |
| return transferToTsBlock(nodePaths); |
| } |
| } |
| |
| private TsBlock transferToTsBlock(Set<TSchemaNode> nodePaths) { |
| TsBlockBuilder tsBlockBuilder = new TsBlockBuilder(outputDataTypes); |
| // sort by node type |
| Set<TSchemaNode> sortSet = |
| new TreeSet<>( |
| (o1, o2) -> { |
| if (o1.getNodeType() == o2.getNodeType()) { |
| return o1.getNodeName().compareTo(o2.getNodeName()); |
| } |
| return o1.getNodeType() - o2.getNodeType(); |
| }); |
| sortSet.addAll(nodePaths); |
| sortSet.forEach( |
| node -> { |
| tsBlockBuilder.getTimeColumnBuilder().writeLong(0L); |
| tsBlockBuilder |
| .getColumnBuilder(0) |
| .writeBinary(new Binary(node.getNodeName(), TSFileConfig.STRING_CHARSET)); |
| tsBlockBuilder |
| .getColumnBuilder(1) |
| .writeBinary( |
| new Binary( |
| MNodeType.getMNodeType(node.getNodeType()).getNodeTypeName(), |
| TSFileConfig.STRING_CHARSET)); |
| tsBlockBuilder.declarePosition(); |
| }); |
| return tsBlockBuilder.build(); |
| } |
| |
| @Override |
| public boolean hasNext() throws Exception { |
| return isReadingMemory || child.hasNextWithTimer(); |
| } |
| |
| @Override |
| public void close() throws Exception { |
| child.close(); |
| } |
| |
| @Override |
| public boolean isFinished() throws Exception { |
| return !isReadingMemory && child.isFinished(); |
| } |
| |
| @Override |
| public long calculateMaxPeekMemory() { |
| // todo calculate the result based on all the scan node; currently, this is shadowed by |
| // schemaQueryMergeNode |
| return Math.max(2L * DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES, child.calculateMaxPeekMemory()); |
| } |
| |
| @Override |
| public long calculateMaxReturnSize() { |
| return Math.max(DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES, child.calculateMaxReturnSize()); |
| } |
| |
| @Override |
| public long calculateRetainedSizeAfterCallingNext() { |
| return DEFAULT_MAX_TSBLOCK_SIZE_IN_BYTES + child.calculateRetainedSizeAfterCallingNext(); |
| } |
| } |