content: /*
   * 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 com.alibaba.compileflow.engine.bpmn.builder.generator;
  
  import com.alibaba.compileflow.engine.bpmn.definition.*;
  import com.alibaba.compileflow.engine.core.builder.generator.CodeGenerator;
  import com.alibaba.compileflow.engine.core.builder.generator.GeneratorContext;
  import com.alibaba.compileflow.engine.core.builder.generator.provider.AbstractNodeGeneratorProvider;
  import com.alibaba.compileflow.engine.core.definition.Node;
  import com.alibaba.compileflow.engine.core.definition.TransitionNode;
  
  /**
   * @author yusu
   */
  public class BpmnNodeGeneratorProvider extends AbstractNodeGeneratorProvider {
  
      @Override
      protected CodeGenerator preProcess(Node node, CodeGenerator generator, GeneratorContext context) {
          if (node instanceof Activity) {
              LoopCharacteristics loopCharacteristics = ((Activity) node).getLoopCharacteristics();
              if (loopCharacteristics instanceof StandardLoopCharacteristics) {
                  return new StandardLoopCharacteristicsGenerator(context,
                          (StandardLoopCharacteristics) loopCharacteristics, generator);
              }
              if (loopCharacteristics instanceof MultiInstanceLoopCharacteristics) {
                  return new MultiInstanceLoopCharacteristicsGenerator(context,
                          (MultiInstanceLoopCharacteristics) loopCharacteristics, generator);
              }
          }
          return generator;
      }
  
      @Override
      protected void registerNodeGenerator(TransitionNode node, GeneratorContext context) {
          if (node instanceof ServiceTask) {
              registerGenerator(node, new ServiceTaskGenerator(context, (ServiceTask) node), context);
          } else if (node instanceof ScriptTask) {
              registerGenerator(node, new ScriptTaskGenerator(context, (ScriptTask) node), context);
          } else if (node instanceof ExclusiveGateway) {
              registerGenerator(node, new ExclusiveGatewayGenerator(context, (ExclusiveGateway) node), context);
          } else if (node instanceof InclusiveGateway) {
              registerGenerator(node, new InclusiveGatewayGenerator(context, (InclusiveGateway) node), context);
          } else if (node instanceof ParallelGateway) {
              registerGenerator(node, new ParallelGatewayGenerator(context, (ParallelGateway) node), context);
          } else if (node instanceof StartEvent) {
              registerGenerator(node, new StartEventGenerator(context, (StartEvent) node), context);
          } else if (node instanceof EndEvent) {
              registerGenerator(node, new EndEventGenerator(context, (EndEvent) node), context);
          } else if (node instanceof SubProcess) {
              registerGenerator(node, new SubProcessGenerator(context, (SubProcess) node), context);
          } else if (node instanceof ReceiveTask) {
              registerGenerator(node, new ReceiveTaskGenerator(context, (ReceiveTask) node), context);
          } else if (node instanceof CallActivity) {
              registerGenerator(node, new CallActivityGenerator(context, (CallActivity) node), context);
          } else if (node instanceof Message) {
              registerGenerator(node, new MessageGenerator(context), context);
          } else {
              throw new IllegalStateException(
                      "Unsupported BPMN node type: " + node.getClass().getName() +
                              ". Supported node types are: ServiceTask, ScriptTask, ExclusiveGateway, " +
                              "InclusiveGateway, ParallelGateway, StartEvent, EndEvent, SubProcess, " +
                              "ReceiveTask, CallActivity, and Message. " +
                              "Please check your BPMN model or implement a custom generator for this node type."
              );
          }
      }
  
  }
  