| /* |
| * 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.common; |
| |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeId; |
| |
| import org.apache.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import static java.lang.String.format; |
| import static java.util.Objects.requireNonNull; |
| |
| public class QueryId { |
| |
| public static final QueryId MOCK_QUERY_ID = QueryId.valueOf("mock_query_id"); |
| |
| private final String id; |
| |
| private int nextPlanNodeIndex; |
| private int nextPlanFragmentIndex; |
| |
| private static final String INVALID_ID_ERROR_MSG = "Invalid id %s"; |
| |
| public static QueryId valueOf(String queryId) { |
| // ID is verified in the constructor |
| return new QueryId(queryId); |
| } |
| |
| public QueryId(String id) { |
| this.id = validateId(id); |
| this.nextPlanNodeIndex = 0; |
| this.nextPlanFragmentIndex = 0; |
| } |
| |
| public PlanNodeId genPlanNodeId() { |
| return new PlanNodeId(String.valueOf(nextPlanNodeIndex++)); |
| } |
| |
| public PlanFragmentId genPlanFragmentId() { |
| return new PlanFragmentId(this, nextPlanFragmentIndex++); |
| } |
| |
| public String getId() { |
| return id; |
| } |
| |
| @Override |
| public String toString() { |
| return id; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(id); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null || getClass() != obj.getClass()) { |
| return false; |
| } |
| QueryId other = (QueryId) obj; |
| return Objects.equals(this.id, other.id); |
| } |
| |
| public static List<String> parseDottedId(String id, int expectedParts, String name) { |
| requireNonNull(id, "id is null"); |
| checkArgument(expectedParts > 0, "expectedParts must be at least 1"); |
| requireNonNull(name, "name is null"); |
| |
| List<String> ids = Arrays.asList(id.split("\\.")); |
| checkArgument(ids.size() == expectedParts, "Invalid %s %s", name, id); |
| |
| for (String part : ids) { |
| checkArgument(!part.isEmpty(), INVALID_ID_ERROR_MSG, id); |
| checkArgument(isValidId(part), INVALID_ID_ERROR_MSG, id); |
| } |
| return ids; |
| } |
| |
| private static void checkArgument(boolean condition, String message, Object... messageArgs) { |
| if (!condition) { |
| throw new IllegalArgumentException(format(message, messageArgs)); |
| } |
| } |
| |
| // |
| // Id helper methods |
| // |
| |
| // Check if the string matches [_a-z0-9]+ , but without the overhead of regex |
| private static boolean isValidId(String id) { |
| if (id.length() == 0) { |
| return false; |
| } |
| |
| for (int i = 0; i < id.length(); i++) { |
| char c = id.charAt(i); |
| if (!(c == '_' || c >= 'a' && c <= 'z' || c >= '0' && c <= '9')) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public static String validateId(String id) { |
| requireNonNull(id, "id is null"); |
| checkArgument(!id.isEmpty(), "id is empty"); |
| checkArgument(isValidId(id), INVALID_ID_ERROR_MSG, id); |
| return id; |
| } |
| |
| public void serialize(ByteBuffer byteBuffer) { |
| ReadWriteIOUtils.write(this.id, byteBuffer); |
| } |
| |
| public void serialize(DataOutputStream stream) throws IOException { |
| ReadWriteIOUtils.write(this.id, stream); |
| } |
| |
| public static QueryId deserialize(ByteBuffer byteBuffer) { |
| return new QueryId(ReadWriteIOUtils.readString(byteBuffer)); |
| } |
| } |