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/**
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*
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*/
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package eu.dnetlib.data.search.web;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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import javax.xml.parsers.DocumentBuilder;
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import javax.xml.parsers.DocumentBuilderFactory;
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import javax.xml.parsers.ParserConfigurationException;
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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.springframework.context.ApplicationContext;
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import org.springframework.web.context.support.WebApplicationContextUtils;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import eu.dnetlib.api.data.SearchService;
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import gr.uoa.di.driver.enabling.resultset.ResultSetFactory;
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/**
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* @author stoumpos
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*
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*/
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public class SearchServiceContextUtils {
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public static SearchService getSearchService(HttpServletRequest request) {
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ServletContext session = request.getSession().getServletContext();
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ApplicationContext context = WebApplicationContextUtils
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.getWebApplicationContext(session);
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SearchService search = (SearchService) context.getBean("searchService");
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return search;
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}
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public static ResultSetFactory getResultSetFactory(
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HttpServletRequest request) {
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ServletContext session = request.getSession().getServletContext();
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ApplicationContext context = WebApplicationContextUtils
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.getWebApplicationContext(session);
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ResultSetFactory rsFactory = (ResultSetFactory) context
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.getBean("resultSetFactory");
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return rsFactory;
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}
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public static final String prettyPrint(String xml)
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throws TransformerConfigurationException,
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TransformerFactoryConfigurationError, TransformerException,
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SAXException, IOException, ParserConfigurationException {
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DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
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dbf.setValidating(true);
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DocumentBuilder db = dbf.newDocumentBuilder();
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InputSource sourceXML = new InputSource(new StringReader(xml));
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Document xmlDoc = db.parse(sourceXML);
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Element source = xmlDoc.getDocumentElement();
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source.normalize();
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StreamResult target = new StreamResult(new StringWriter());
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Transformer tf = TransformerFactory.newInstance().newTransformer();
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tf.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
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tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
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tf.setOutputProperty(OutputKeys.INDENT, "yes");
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tf.transform(new DOMSource(source), target);
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return target.getWriter().toString();
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}
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}
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