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package eu.dnetlib.msro.eagle.workflows.nodes.transform.editions;
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import java.io.File;
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import java.io.IOException;
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import java.io.StringReader;
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import java.util.Map;
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import javax.xml.transform.stream.StreamSource;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.dom4j.Document;
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import org.dom4j.DocumentException;
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import org.dom4j.Element;
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import org.dom4j.Node;
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import org.dom4j.io.SAXReader;
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import eu.dnetlib.miscutils.functional.UnaryFunction;
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import eu.dnetlib.miscutils.functional.xml.ApplyXslt;
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public class EditionXsltUnaryFunction implements UnaryFunction<String, String> {
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private static final Log log = LogFactory.getLog(EditionXsltUnaryFunction.class);
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private ApplyXslt xslt;
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private SAXReader reader;
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public EditionXsltUnaryFunction(final String xsltPath, Map<String, String> xsltParams) throws IOException {
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this.xslt = new ApplyXslt(new StreamSource(new File(xsltPath)), xsltPath, xsltParams);
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this.reader = new SAXReader();
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}
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/**
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* xPath the <metadata> node and applies xslt 2.0 transformation
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*/
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@Override
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public String evaluate(String input) {
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try {
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Document doc = reader.read(new StringReader(input));
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Node result = doc.selectSingleNode("//*[local-name()='metadata']/*");
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String edition = xslt.evaluate(result.asXML());
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result.detach();
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((Element) doc.selectSingleNode("//*[local-name()='metadata']")).add(reader.read(new StringReader(edition)).getRootElement());
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return doc.asXML();
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} catch (DocumentException e) {
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log.error("Problem creating dom4j document from \n" + input, e);
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throw new RuntimeException(e);
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}
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}
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}
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