| /* |
| * 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.commons.exception.IllegalPathException; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.commons.path.PathPatternTree; |
| import org.apache.iotdb.db.queryengine.common.header.ColumnHeader; |
| import org.apache.iotdb.db.queryengine.common.header.ColumnHeaderConstant; |
| 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.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| public class DevicesCountNode extends SchemaQueryScanNode { |
| |
| public DevicesCountNode( |
| PlanNodeId id, PartialPath partialPath, boolean isPrefixPath, PathPatternTree scope) { |
| super(id, partialPath, isPrefixPath, scope); |
| } |
| |
| @Override |
| public PlanNodeType getType() { |
| return PlanNodeType.DEVICES_COUNT; |
| } |
| |
| @Override |
| public PlanNode clone() { |
| return new DevicesCountNode(getPlanNodeId(), path, isPrefixPath, scope); |
| } |
| |
| @Override |
| public List<String> getOutputColumnNames() { |
| return ColumnHeaderConstant.countDevicesColumnHeaders.stream() |
| .map(ColumnHeader::getColumnName) |
| .collect(Collectors.toList()); |
| } |
| |
| @Override |
| protected void serializeAttributes(ByteBuffer byteBuffer) { |
| PlanNodeType.DEVICES_COUNT.serialize(byteBuffer); |
| ReadWriteIOUtils.write(path.getFullPath(), byteBuffer); |
| scope.serialize(byteBuffer); |
| ReadWriteIOUtils.write(isPrefixPath, byteBuffer); |
| } |
| |
| @Override |
| protected void serializeAttributes(DataOutputStream stream) throws IOException { |
| PlanNodeType.DEVICES_COUNT.serialize(stream); |
| ReadWriteIOUtils.write(path.getFullPath(), stream); |
| scope.serialize(stream); |
| ReadWriteIOUtils.write(isPrefixPath, stream); |
| } |
| |
| public static PlanNode deserialize(ByteBuffer buffer) { |
| String fullPath = ReadWriteIOUtils.readString(buffer); |
| PartialPath path; |
| try { |
| path = new PartialPath(fullPath); |
| } catch (IllegalPathException e) { |
| throw new IllegalArgumentException("Cannot deserialize DevicesSchemaScanNode", e); |
| } |
| PathPatternTree scope = PathPatternTree.deserialize(buffer); |
| boolean isPrefixPath = ReadWriteIOUtils.readBool(buffer); |
| PlanNodeId planNodeId = PlanNodeId.deserialize(buffer); |
| return new DevicesCountNode(planNodeId, path, isPrefixPath, scope); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format( |
| "DeviceCountNode-%s:[DataRegion: %s]", this.getPlanNodeId(), this.getRegionReplicaSet()); |
| } |
| } |