35 lines
705 B
Java
35 lines
705 B
Java
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package eu.dnetlib.dhp.schema.oaf.utils;
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import java.util.Comparator;
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import java.util.Optional;
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import eu.dnetlib.dhp.schema.oaf.Pid;
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import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
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public class PidValueComparator implements Comparator<Pid> {
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@Override
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public int compare(Pid left, Pid 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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Pid l = CleaningFunctions.normalizePidValue(left);
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Pid r = CleaningFunctions.normalizePidValue(right);
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return Optional
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.ofNullable(l.getValue())
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.map(
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lv -> Optional
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.ofNullable(r.getValue())
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.map(lv::compareTo)
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.orElse(-1))
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.orElse(1);
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}
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}
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