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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; 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.camunda.bpm.engine.impl.bpmn.parser;

import java.util.ArrayList;
import java.util.List;

import org.camunda.bpm.engine.impl.cfg.BpmnParseFactory;
import org.camunda.bpm.engine.impl.el.ExpressionManager;
import org.camunda.bpm.engine.impl.util.xml.Parser;


/**
 * Parser for BPMN 2.0 process models.
 *
 * There is only one instance of this parser in the process engine.
 * This {@link Parser} creates {@link BpmnParse} instances that
 * can be used to actually parse the BPMN 2.0 XML process definitions.
 *
 * @author Tom Baeyens
 * @author Joram Barrez
 */
public class BpmnParser extends Parser {

  /**
   * The BPMN 2.0 namespace
   */
  public static final String BPMN20_NS = "http://www.omg.org/spec/BPMN/20100524/MODEL";

  /**
   * The location of the BPMN 2.0 XML schema.
   */
  public static final String BPMN_20_SCHEMA_LOCATION = "org/camunda/bpm/engine/impl/bpmn/parser/BPMN20.xsd";

  /**
   * The namespace of the camunda custom BPMN extensions.
   */
  public static final String CAMUNDA_BPMN_EXTENSIONS_NS = "http://camunda.org/schema/1.0/bpmn";

  /**
   * The namespace of the Activiti custom BPMN extensions.
   * @deprecated use {@link #CAMUNDA_BPMN_EXTENSIONS_NS}
   */
  @Deprecated
  public static final String ACTIVITI_BPMN_EXTENSIONS_NS = "http://activiti.org/bpmn";

  /**
   * The namepace of the BPMN 2.0 diagram interchange elements.
   */
  public static final String BPMN_DI_NS = "http://www.omg.org/spec/BPMN/20100524/DI";

  /**
   * The namespace of the BPMN 2.0 diagram common elements.
   */
  public static final String BPMN_DC_NS = "http://www.omg.org/spec/DD/20100524/DC";

  /**
   * The namespace of the generic OMG DI elements (don't ask me why they didnt use the BPMN_DI_NS ...)
   */
  public static final String OMG_DI_NS = "http://www.omg.org/spec/DD/20100524/DI";

  /**
   * The Schema-Instance namespace.
   */
  public static final String XSI_NS = "http://www.w3.org/2001/XMLSchema-instance";

  protected ExpressionManager expressionManager;
  protected List parseListeners = new ArrayList();

  protected BpmnParseFactory bpmnParseFactory;

  public BpmnParser(ExpressionManager expressionManager, BpmnParseFactory bpmnParseFactory) {
    this.expressionManager = expressionManager;
    this.bpmnParseFactory = bpmnParseFactory;
  }

  /**
   * Creates a new {@link BpmnParse} instance that can be used
   * to parse only one BPMN 2.0 process definition.
   */
  @Override
  public BpmnParse createParse() {
    return bpmnParseFactory.createBpmnParse(this);
  }

  public ExpressionManager getExpressionManager() {
    return expressionManager;
  }

  public void setExpressionManager(ExpressionManager expressionManager) {
    this.expressionManager = expressionManager;
  }

  public List getParseListeners() {
    return parseListeners;
  }

  public void setParseListeners(List parseListeners) {
    this.parseListeners = parseListeners;
  }
}




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