| /* |
| * 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.planner.plan.node.metedata.read; |
| |
| import org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.commons.path.PathDeserializeUtil; |
| import org.apache.iotdb.commons.path.PathPatternTree; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNode; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeId; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeType; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeUtil; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanVisitor; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.source.SourceNode; |
| import org.apache.iotdb.db.schemaengine.template.Template; |
| |
| import com.google.common.collect.ImmutableList; |
| import org.apache.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** This class defines the scan task of schema fetcher. */ |
| public class SchemaFetchScanNode extends SourceNode { |
| |
| private final PartialPath storageGroup; |
| private final PathPatternTree patternTree; |
| private final Map<Integer, Template> templateMap; |
| private final boolean withTags; |
| private final boolean withTemplate; |
| private TRegionReplicaSet schemaRegionReplicaSet; |
| |
| public SchemaFetchScanNode( |
| PlanNodeId id, |
| PartialPath storageGroup, |
| PathPatternTree patternTree, |
| Map<Integer, Template> templateMap, |
| boolean withTags, |
| boolean withTemplate) { |
| super(id); |
| this.storageGroup = storageGroup; |
| this.patternTree = patternTree; |
| this.patternTree.constructTree(); |
| this.templateMap = templateMap; |
| this.withTags = withTags; |
| this.withTemplate = withTemplate; |
| } |
| |
| public PartialPath getStorageGroup() { |
| return storageGroup; |
| } |
| |
| public PathPatternTree getPatternTree() { |
| return patternTree; |
| } |
| |
| public Map<Integer, Template> getTemplateMap() { |
| return templateMap; |
| } |
| |
| @Override |
| public List<PlanNode> getChildren() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public void addChild(PlanNode child) {} |
| |
| @Override |
| public PlanNodeType getType() { |
| return PlanNodeType.SCHEMA_FETCH_SCAN; |
| } |
| |
| @Override |
| public PlanNode clone() { |
| return new SchemaFetchScanNode( |
| getPlanNodeId(), storageGroup, patternTree, templateMap, withTags, withTemplate); |
| } |
| |
| @Override |
| public int allowedChildCount() { |
| return 0; |
| } |
| |
| @Override |
| public List<String> getOutputColumnNames() { |
| return ImmutableList.of(); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format( |
| "SchemaFetchScanNode-%s:[StorageGroup: %s, DataRegion: %s]", |
| this.getPlanNodeId(), |
| storageGroup, |
| PlanNodeUtil.printRegionReplicaSet(getRegionReplicaSet())); |
| } |
| |
| @Override |
| protected void serializeAttributes(ByteBuffer byteBuffer) { |
| PlanNodeType.SCHEMA_FETCH_SCAN.serialize(byteBuffer); |
| storageGroup.serialize(byteBuffer); |
| patternTree.serialize(byteBuffer); |
| |
| ReadWriteIOUtils.write(templateMap.size(), byteBuffer); |
| for (Template template : templateMap.values()) { |
| template.serialize(byteBuffer); |
| } |
| ReadWriteIOUtils.write(withTags, byteBuffer); |
| ReadWriteIOUtils.write(withTemplate, byteBuffer); |
| } |
| |
| @Override |
| protected void serializeAttributes(DataOutputStream stream) throws IOException { |
| PlanNodeType.SCHEMA_FETCH_SCAN.serialize(stream); |
| storageGroup.serialize(stream); |
| patternTree.serialize(stream); |
| ReadWriteIOUtils.write(templateMap.size(), stream); |
| for (Template template : templateMap.values()) { |
| template.serialize(stream); |
| } |
| ReadWriteIOUtils.write(withTags, stream); |
| ReadWriteIOUtils.write(withTemplate, stream); |
| } |
| |
| public static SchemaFetchScanNode deserialize(ByteBuffer byteBuffer) { |
| PartialPath storageGroup = (PartialPath) PathDeserializeUtil.deserialize(byteBuffer); |
| PathPatternTree patternTree = PathPatternTree.deserialize(byteBuffer); |
| |
| int templateNum = ReadWriteIOUtils.readInt(byteBuffer); |
| Map<Integer, Template> templateMap = new HashMap<>(); |
| Template template; |
| for (int i = 0; i < templateNum; i++) { |
| template = new Template(); |
| template.deserialize(byteBuffer); |
| templateMap.put(template.getId(), template); |
| } |
| boolean withTags = ReadWriteIOUtils.readBool(byteBuffer); |
| boolean withTemplate = ReadWriteIOUtils.readBool(byteBuffer); |
| PlanNodeId planNodeId = PlanNodeId.deserialize(byteBuffer); |
| return new SchemaFetchScanNode( |
| planNodeId, storageGroup, patternTree, templateMap, withTags, withTemplate); |
| } |
| |
| @Override |
| public void open() throws Exception {} |
| |
| @Override |
| public TRegionReplicaSet getRegionReplicaSet() { |
| return schemaRegionReplicaSet; |
| } |
| |
| @Override |
| public void setRegionReplicaSet(TRegionReplicaSet schemaRegionReplicaSet) { |
| this.schemaRegionReplicaSet = schemaRegionReplicaSet; |
| } |
| |
| @Override |
| public void close() throws Exception {} |
| |
| @Override |
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { |
| return visitor.visitSchemaFetchScan(this, context); |
| } |
| |
| public boolean isWithTags() { |
| return withTags; |
| } |
| |
| public boolean isWithTemplate() { |
| return withTemplate; |
| } |
| } |