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package eu.dnetlib.validator.service.impls.listeners;
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import java.io.StringWriter;
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import java.util.List;
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import java.util.Map;
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import javax.xml.transform.OutputKeys;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerConfigurationException;
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import javax.xml.transform.TransformerException;
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import javax.xml.transform.TransformerFactory;
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import javax.xml.transform.TransformerFactoryConfigurationError;
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import javax.xml.transform.dom.DOMSource;
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import javax.xml.transform.stream.StreamResult;
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import org.apache.log4j.Logger;
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import org.apache.velocity.Template;
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import org.apache.velocity.VelocityContext;
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import org.apache.velocity.app.VelocityEngine;
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import org.apache.velocity.exception.ParseErrorException;
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import org.apache.velocity.exception.ResourceNotFoundException;
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import org.apache.velocity.runtime.RuntimeConstants;
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import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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public class RecordXMLBuilder {
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private static Logger logger = Logger.getLogger(RecordXMLBuilder.class);
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private VelocityEngine ve = null;
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public void init() throws Exception {
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this.ve = new VelocityEngine();
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this.ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
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this.ve.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
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this.ve.setProperty("runtime.log.logsystem.class", "org.apache.velocity.runtime.log.NullLogSystem");
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this.ve.init();
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}
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public String buildXml(List<Map<String, String>> veloList, Object record, Map<String, String> recordValidationResult) {
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logger.debug("Building XML file for record");
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String xmlRetString = null;
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try {
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VelocityContext context = new VelocityContext();
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NodeList list = ((Node) record).getChildNodes();
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Node recordNode = null;
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for(int i = 0; i < list.getLength(); i++)
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{
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Node node = list.item(i);
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if(node.getNodeName().equals("root"))
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{
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logger.debug("root found");
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list = node.getChildNodes();
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for(i = 0; i < list.getLength(); i++)
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{
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node = list.item(i);
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logger.debug("node name: " + node.getNodeName());
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logger.debug("node local name: " + node.getLocalName());
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if(node.getNodeName().contains("record"))
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{
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recordNode = node;
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logger.debug("record found");
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break;
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}
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}
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}
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}
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Transformer transformer;
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transformer = TransformerFactory.newInstance().newTransformer();
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transformer.setOutputProperty(OutputKeys.INDENT, "yes");
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transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
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// transformer.setOutputProperty(OutputKeys.VERSION, "no");
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StreamResult result = new StreamResult(new StringWriter());
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DOMSource source = new DOMSource(recordNode);
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transformer.transform(source, result);
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String xmlString = result.getWriter().toString();
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// logger.debug("xmlstring: " + xmlString);
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context.put("recordFull", xmlString);
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context.put("ruleList", veloList);
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context.put("record", recordValidationResult);
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Template t = this.ve.getTemplate("/eu/dnetlib/validator/service/listeners/xml.vm");
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StringWriter writer = new StringWriter();
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t.merge(context, writer);
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xmlRetString = writer.toString();
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} catch (TransformerConfigurationException e) {
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logger.error("Error while building XML file", e);
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} catch (TransformerFactoryConfigurationError e) {
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logger.error("Error while building XML file", e);
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} catch (TransformerException e) {
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logger.error("Error while building XML file", e);
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} catch (ResourceNotFoundException e) {
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logger.error("Error while building XML file", e);
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} catch (ParseErrorException e) {
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logger.error("Error while building XML file", e);
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} catch (Exception e) {
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logger.error("Error while building XML file", e);
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}
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return xmlRetString;
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}
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}
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