content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed 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.activiti.engine.impl.db;
  
  import org.activiti.engine.impl.cfg.IdGenerator;
  import org.activiti.engine.impl.cmd.GetNextIdBlockCmd;
  import org.activiti.engine.impl.interceptor.CommandConfig;
  import org.activiti.engine.impl.interceptor.CommandExecutor;
  
  /**
  
   */
  public class DbIdGenerator implements IdGenerator {
  
      protected int idBlockSize;
      protected long nextId;
      protected long lastId = -1;
  
      protected CommandExecutor commandExecutor;
      protected CommandConfig commandConfig;
  
      public synchronized String getNextId() {
          if (lastId < nextId) {
              getNewBlock();
          }
          long _nextId = nextId++;
          return Long.toString(_nextId);
      }
  
      protected synchronized void getNewBlock() {
          IdBlock idBlock = commandExecutor.execute(commandConfig, new GetNextIdBlockCmd(idBlockSize));
          this.nextId = idBlock.getNextId();
          this.lastId = idBlock.getLastId();
      }
  
      public int getIdBlockSize() {
          return idBlockSize;
      }
  
      public void setIdBlockSize(int idBlockSize) {
          this.idBlockSize = idBlockSize;
      }
  
      public CommandExecutor getCommandExecutor() {
          return commandExecutor;
      }
  
      public void setCommandExecutor(CommandExecutor commandExecutor) {
          this.commandExecutor = commandExecutor;
      }
  
      public CommandConfig getCommandConfig() {
          return commandConfig;
      }
  
      public void setCommandConfig(CommandConfig commandConfig) {
          this.commandConfig = commandConfig;
      }
  }
  