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package eu.dnetlib.dli.resolver;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import com.ximpleware.AutoPilot;
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import com.ximpleware.VTDGen;
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import com.ximpleware.VTDNav;
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import eu.dnetlib.data.transform.VtdUtilityParser;
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import eu.dnetlib.data.transform.VtdUtilityParser.Node;
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import eu.dnetlib.dli.resolver.model.DLIResolvedObject;
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import eu.dnetlib.pid.resolver.model.SubjectType;
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import eu.dnetlib.pid.resolver.parser.AbstractResolverParser;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* Created by sandro on 10/3/16.
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*/
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public class OpenAireParser extends AbstractResolverParser {
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private static final Log log = LogFactory.getLog(OpenAireParser.class);
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@Override
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public DLIResolvedObject parseObject(final String record) {
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try {
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final DLIResolvedObject currentObject = new DLIResolvedObject();
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final VTDGen vg = new VTDGen();
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vg.setDoc(record.getBytes());
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vg.parse(true);
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final VTDNav vn = vg.getNav();
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final AutoPilot ap = new AutoPilot(vn);
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ap.declareXPathNameSpace("oaf", "http://namespace.openaire.eu/oaf");
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final List<Node> subjectNodes =
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VtdUtilityParser.getTextValuesWithAttributes(ap, vn, "//oaf:result//subject", Arrays.asList("classname", "schemename"));
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//Setting subjects
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if (subjectNodes != null && subjectNodes.size() > 0) {
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final List<SubjectType> currentSubjects = new ArrayList<>();
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subjectNodes.forEach(it ->
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currentSubjects.add(new SubjectType(it.getAttributes().get("schemename"), it.getTextValue()))
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);
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currentObject.setSubjects(currentSubjects);
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}
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//Setting Titles
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final List<String> titles = VtdUtilityParser.getTextValue(ap, vn, "//oaf:result/title");
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if (titles != null && titles.size() > 0) {
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currentObject.setTitles(titles);
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}
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//Setting authors
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final List<String> authorNodes = VtdUtilityParser.getTextValue(ap, vn, "//oaf:result//fullname");
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if (authorNodes != null && authorNodes.size() > 0) {
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currentObject.setAuthors(authorNodes);
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}
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//Setting descriptions
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final List<String> descriptions = VtdUtilityParser.getTextValue(ap, vn, "//oaf:result//description");
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if (descriptions != null && descriptions.size() > 0) {
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currentObject.setDescription(descriptions.get(0));
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}
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//resulttype classid
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final List<Node> resutlTypes = VtdUtilityParser.getTextValuesWithAttributes(ap, vn, "//oaf:result/resulttype", Arrays.asList("classid"));
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if (resutlTypes != null && resutlTypes.size() > 0) {
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final String type = resutlTypes.get(0).getAttributes().get("classid");
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setType(currentObject, type);
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}
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return currentObject;
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} catch (Throwable e) {
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log.error("Error on parsing object ", e);
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return null;
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}
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}
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}
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