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77 lines
1.9 KiB
Java
77 lines
1.9 KiB
Java
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package eu.dnetlib.dhp.schema.oaf.utils;
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import static eu.dnetlib.dhp.schema.common.ModelConstants.CROSSREF_ID;
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import java.util.Comparator;
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import java.util.HashSet;
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import java.util.Optional;
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import java.util.stream.Collectors;
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import eu.dnetlib.dhp.schema.common.ModelConstants;
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import eu.dnetlib.dhp.schema.oaf.Result;
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public class ResultTypeComparator implements Comparator<Result> {
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@Override
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public int compare(Result left, Result right) {
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if (left == null && right == null)
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return 0;
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if (left == null)
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return 1;
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if (right == null)
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return -1;
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HashSet<String> lCf = getCollectedFromIds(left);
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HashSet<String> rCf = getCollectedFromIds(right);
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if (lCf.contains(CROSSREF_ID) && !rCf.contains(CROSSREF_ID)) {
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return -1;
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}
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if (!lCf.contains(CROSSREF_ID) && rCf.contains(CROSSREF_ID)) {
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return 1;
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}
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String lClass = left.getResulttype().getClassid();
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String rClass = right.getResulttype().getClassid();
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if (lClass.equals(rClass))
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return 0;
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if (lClass.equals(ModelConstants.PUBLICATION_RESULTTYPE_CLASSID))
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return -1;
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if (rClass.equals(ModelConstants.PUBLICATION_RESULTTYPE_CLASSID))
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return 1;
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if (lClass.equals(ModelConstants.DATASET_RESULTTYPE_CLASSID))
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return -1;
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if (rClass.equals(ModelConstants.DATASET_RESULTTYPE_CLASSID))
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return 1;
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if (lClass.equals(ModelConstants.SOFTWARE_RESULTTYPE_CLASSID))
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return -1;
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if (rClass.equals(ModelConstants.SOFTWARE_RESULTTYPE_CLASSID))
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return 1;
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if (lClass.equals(ModelConstants.ORP_RESULTTYPE_CLASSID))
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return -1;
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if (rClass.equals(ModelConstants.ORP_RESULTTYPE_CLASSID))
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return 1;
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// Else (but unlikely), lexicographical ordering will do.
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return lClass.compareTo(rClass);
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}
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protected HashSet<String> getCollectedFromIds(Result left) {
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return Optional
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.ofNullable(left.getCollectedfrom())
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.map(
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cf -> cf
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.stream()
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.map(c -> c.getKey())
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.collect(Collectors.toCollection(HashSet::new)))
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.orElse(new HashSet<>());
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}
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}
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