org.activiti.bpmn.converter.SequenceFlowXMLConverter.java Source code

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Here is the source code for org.activiti.bpmn.converter.SequenceFlowXMLConverter.java

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/* 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.bpmn.converter;

import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;

import org.activiti.bpmn.converter.util.BpmnXMLUtil;
import org.activiti.bpmn.model.BaseElement;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.SequenceFlow;
import org.apache.commons.lang3.StringUtils;

/**
 * @author Tijs Rademakers
 */
public class SequenceFlowXMLConverter extends BaseBpmnXMLConverter {

    public Class<? extends BaseElement> getBpmnElementType() {
        return SequenceFlow.class;
    }

    @Override
    protected String getXMLElementName() {
        return ELEMENT_SEQUENCE_FLOW;
    }

    @Override
    protected BaseElement convertXMLToElement(XMLStreamReader xtr, BpmnModel model) throws Exception {
        SequenceFlow sequenceFlow = new SequenceFlow();
        BpmnXMLUtil.addXMLLocation(sequenceFlow, xtr);
        sequenceFlow.setSourceRef(xtr.getAttributeValue(null, ATTRIBUTE_FLOW_SOURCE_REF));
        sequenceFlow.setTargetRef(xtr.getAttributeValue(null, ATTRIBUTE_FLOW_TARGET_REF));
        sequenceFlow.setName(xtr.getAttributeValue(null, ATTRIBUTE_NAME));

        parseChildElements(getXMLElementName(), sequenceFlow, model, xtr);

        return sequenceFlow;
    }

    @Override
    protected void writeAdditionalAttributes(BaseElement element, BpmnModel model, XMLStreamWriter xtw)
            throws Exception {
        SequenceFlow sequenceFlow = (SequenceFlow) element;
        writeDefaultAttribute(ATTRIBUTE_FLOW_SOURCE_REF, sequenceFlow.getSourceRef(), xtw);
        writeDefaultAttribute(ATTRIBUTE_FLOW_TARGET_REF, sequenceFlow.getTargetRef(), xtw);
    }

    @Override
    protected void writeAdditionalChildElements(BaseElement element, BpmnModel model, XMLStreamWriter xtw)
            throws Exception {
        SequenceFlow sequenceFlow = (SequenceFlow) element;

        if (StringUtils.isNotEmpty(sequenceFlow.getConditionExpression())) {
            xtw.writeStartElement(ELEMENT_FLOW_CONDITION);
            xtw.writeAttribute(XSI_PREFIX, XSI_NAMESPACE, "type", "tFormalExpression");
            xtw.writeCData(sequenceFlow.getConditionExpression());
            xtw.writeEndElement();
        }
    }
}