FlowElementXMLConverter.java example

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/**
 * Copyright 1996-2014 FoxBPM ORG.
 *
 * 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.
 * 
 * @author yangguangftlp
 */
package org.foxbpm.bpmn.converter;

import java.util.Iterator;
import java.util.List;

import org.dom4j.Element;
import org.foxbpm.bpmn.constants.BpmnXMLConstants;
import org.foxbpm.bpmn.converter.util.BpmnXMLUtil;
import org.foxbpm.model.Connector;
import org.foxbpm.model.FlowElement;
//github.com/FoxBPM/FoxBPM.git
import org.foxbpm.model.BaseElement;

/**
 * 流程节点转换处理类
 * 
 * @author yangguangftlp
 * @date 2014年10月15日
 */
public abstract class FlowElementXMLConverter extends BaseElementXMLConverter {
	
	@SuppressWarnings("unchecked")
	public void convertXMLToModel(Element element, BaseElement baseElement) {
		FlowElement flowElement = (FlowElement) baseElement;
		flowElement.setName(element.attributeValue(BpmnXMLConstants.ATTRIBUTE_NAME));
		
		Iterator<Element> elementIterator = element.elements().iterator();
		Element subElement = null;
		Element extentionElement = null;
		while (elementIterator.hasNext()) {
			subElement = elementIterator.next();
			if (BpmnXMLConstants.ELEMENT_EXTENSION_ELEMENTS.equals(subElement.getName())) {
				Iterator<Element> extentionIterator = subElement.elements().iterator();
				while (extentionIterator.hasNext()) {
					extentionElement = extentionIterator.next();
					// 转化连接器
					if (BpmnXMLConstants.ELEMENT_CONNECTORINSTANCEELEMENTS.equals(extentionElement.getName())) {
						flowElement.setConnector(BpmnXMLUtil.parserConnectorElement(extentionElement));
					}
				}
			}
		}
		
		super.convertXMLToModel(element, baseElement);
		
	}
	
	@Override
	public void convertModelToXML(Element element, BaseElement baseElement) {
		FlowElement flowElement = (FlowElement) baseElement;
		if (null != flowElement.getName()) {
			element.addAttribute(BpmnXMLConstants.ATTRIBUTE_NAME, flowElement.getName());
		}
		List<Connector> connectors = flowElement.getConnector();
		if(connectors != null && connectors.size() >0){
			Element extensionElement = element.element(BpmnXMLConstants.ELEMENT_EXTENSION_ELEMENTS);
			if(extensionElement == null){
				  extensionElement = element.addElement(BpmnXMLConstants.BPMN2_PREFIX+":"+BpmnXMLConstants.ELEMENT_EXTENSION_ELEMENTS);
			}
			BpmnXMLUtil.createConectorElement(extensionElement, BpmnXMLConstants.TYPE_FLOWCONNECTOR, connectors);
		}
		super.convertModelToXML(element, baseElement);
	}
}