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package eu.dnetlib.msro.workflows.nodes.hostedby;
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import java.io.StringReader;
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import java.util.Map;
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import java.util.function.UnaryOperator;
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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.Element;
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import org.dom4j.Node;
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import org.dom4j.io.SAXReader;
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/**
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* The Class PatchHostedBy.
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*/
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public class PatchHostedBy implements UnaryOperator<String> {
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/**
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* The Constant log.
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*/
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private static final Log log = LogFactory.getLog(PatchHostedBy.class);
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/**
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* The set spec hosted by map.
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*/
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private final Map<String, HostedByEntry> setSpecHostedByMap;
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/**
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* The counters.
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*/
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private final HostedByCounters counters;
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/**
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* The xpath.
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*/
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private final String xpath;
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/**
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* The reader.
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*/
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private final SAXReader reader = new SAXReader();
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/**
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* Instantiates a new patch hosted by.
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*
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* @param setSpecHostedByMap the set spec hosted by map
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* @param xpath the xpath
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* @param counters the counters
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*/
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public PatchHostedBy(final Map<String, HostedByEntry> setSpecHostedByMap, final String xpath, final HostedByCounters counters) {
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this.setSpecHostedByMap = setSpecHostedByMap;
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this.xpath = xpath;
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this.counters = counters;
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if (log.isDebugEnabled()) {
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log.debug("****************************************");
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log.debug("SetSpec/hostedBy map:");
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for (final Map.Entry<String, HostedByEntry> e : setSpecHostedByMap.entrySet()) {
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log.debug(" " + e.getKey() + " -> " + e.getValue());
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}
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log.debug("****************************************");
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}
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}
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/**
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* Evaluate.
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*
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* @param record the record
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* @return the string
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*/
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@Override
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public String apply(final String record) {
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try {
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final Document doc = this.reader.read(new StringReader(record));
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final Element node = (Element) doc.selectSingleNode("//*[local-name()='hostedBy']");
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if (node != null) {
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final HostedByEntry ds = findHostedBy(doc);
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if (ds != null) {
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node.addAttribute("id", ds.getId());
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node.addAttribute("name", ds.getName());
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this.counters.increaseCounter(ds.getId());
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}
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return doc.asXML();
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} else if (log.isDebugEnabled()) {
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log.debug(" -- Missing hostedBy --");
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}
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} catch (final Throwable e) {
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log.error("Error adding hosted by to " + record);
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}
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return record;
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}
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/**
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* Find hosted by.
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*
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* @param doc the doc
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* @return the hosted by entry
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*/
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private HostedByEntry findHostedBy(final Document doc) {
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for (final Object o : doc.selectNodes(this.xpath)) {
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final String set = ((Node) o).getText().trim();
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if (this.setSpecHostedByMap.containsKey(set)) {
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if (log.isDebugEnabled()) {
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log.debug(set + " -> " + this.setSpecHostedByMap.get(set));
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}
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return this.setSpecHostedByMap.get(set);
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} else if (log.isDebugEnabled()) {
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log.debug(set + " -> UNKNOWN REPO");
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}
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}
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return null;
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}
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}
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