de.uni.freiburg.iig.telematik.sepia.serialize.XMLSerializationSupport Maven / Gradle / Ivy

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SEPIA provides implementations for various types of Petri nets. Along Place/Transition-nets, it supports Petri nets with distinguishable token colors and defines coloured workflow nets, where coloured tokens are interpreted as data elements used during process execution. To support information flow analysis of processes, SEPIA defines so-called IF-Nets, tailored for security-oriented workflow modeling which enable users to assign security-levels (HIGH, LOW) to transitions, data elements and persons/agents participating in the process execution.

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package de.uni.freiburg.iig.telematik.sepia.serialize;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class XMLSerializationSupport implements SerializationSupport{
	
	protected Document document = null;
	protected Element rootElement = null;
	
	protected XMLSerializationSupport(){}
	
	public XMLSerializationSupport(String rootElementName){
		createDocumentInstance(rootElementName);
	}
	
	protected void createDocumentInstance(String rootElementName) {
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		DocumentBuilder db = null;
		try {
			db = dbf.newDocumentBuilder();
		} catch (ParserConfigurationException e) {
			e.printStackTrace();
		}
		if (db != null) {
			document = db.newDocument();
			rootElement = createElement(rootElementName);
			document.appendChild(rootElement);
		}
	}
	
	public Element createElement(String elementName){
		return document.createElement(elementName);
	}
	
	public Element getRootElement(){
		return rootElement;
	}
	
	@Override
	public String serialize() throws SerializationException {
		return document.getTextContent();
	}
	
	@Override
	public void serialize(String path, String fileName, String extension) throws SerializationException, IOException {
		try {
			File fileOutput = new File(path+fileName+"."+extension);
			StreamResult streamResult = new StreamResult(fileOutput);
			TransformerFactory tf = TransformerFactory.newInstance();
			Transformer serializer = tf.newTransformer();
			serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
			serializer.setOutputProperty(OutputKeys.INDENT, "yes");
			serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
			serializer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
			serialize();
			serializer.transform(new DOMSource(document), streamResult);
		} catch (TransformerConfigurationException e) {
			throw new SerializationException(e.getMessage());
		} catch (TransformerException e) {
			throw new SerializationException(e.getMessage());
		}
	}
	
	public Element createTextElement(String elementName, String elementText) {
		Element textElement = document.createElement(elementName);
		textElement.setTextContent(elementText);
		return textElement;
	}

}