text: /*
   * Copyright 2010-2020 Alfresco Software, Ltd.
   *
   * 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.bpmn.parser;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.activiti.bpmn.model.BaseElement;
  import org.activiti.bpmn.model.DataObject;
  import org.activiti.bpmn.model.FlowElement;
  import org.activiti.engine.parse.BpmnParseHandler;
  import org.slf4j.Logger;
  
  /**
  
   */
  public class BpmnParseHandlers {
  
    private static final Logger LOGGER = org.slf4j.LoggerFactory.getLogger(BpmnParseHandlers.class);
  
    protected Map<Class<? extends BaseElement>, List<BpmnParseHandler>> parseHandlers;
  
    public BpmnParseHandlers() {
      this.parseHandlers = new HashMap<Class<? extends BaseElement>, List<BpmnParseHandler>>();
    }
  
    public List<BpmnParseHandler> getHandlersFor(Class<? extends BaseElement> clazz) {
      return parseHandlers.get(clazz);
    }
  
    public void addHandlers(List<BpmnParseHandler> bpmnParseHandlers) {
      for (BpmnParseHandler bpmnParseHandler : bpmnParseHandlers) {
        addHandler(bpmnParseHandler);
      }
    }
  
    public void addHandler(BpmnParseHandler bpmnParseHandler) {
      for (Class<? extends BaseElement> type : bpmnParseHandler.getHandledTypes()) {
        List<BpmnParseHandler> handlers = parseHandlers.get(type);
        if (handlers == null) {
          handlers = new ArrayList<BpmnParseHandler>();
          parseHandlers.put(type, handlers);
        }
        handlers.add(bpmnParseHandler);
      }
    }
  
    public void parseElement(BpmnParse bpmnParse, BaseElement element) {
  
      if (element instanceof DataObject) {
        // ignore DataObject elements because they are processed on Process
        // and Sub process level
        return;
      }
  
      if (element instanceof FlowElement) {
        bpmnParse.setCurrentFlowElement((FlowElement) element);
      }
  
      // Execute parse handlers
      List<BpmnParseHandler> handlers = parseHandlers.get(element.getClass());
  
      if (handlers == null) {
        LOGGER.warn("Could not find matching parse handler for + " + element.getId() + " this is likely a bug.");
      } else {
        for (BpmnParseHandler handler : handlers) {
          handler.parse(bpmnParse, element);
        }
      }
    }
  
  }
  