52 lines
1.1 KiB
Java
52 lines
1.1 KiB
Java
package eu.dnetlib.pace.tree;
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import java.util.List;
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import java.util.Map;
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import com.google.common.collect.Iterables;
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import eu.dnetlib.pace.config.Config;
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import eu.dnetlib.pace.model.Field;
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import eu.dnetlib.pace.tree.support.AbstractComparator;
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import eu.dnetlib.pace.tree.support.ComparatorClass;
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/**
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* Returns true if the number of values in the fields is the same.
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*
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* @author claudio
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*/
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@ComparatorClass("sizeMatch")
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public class SizeMatch extends AbstractComparator {
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/**
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* Instantiates a new size match.
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*
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* @param params
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* the parameters
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*/
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public SizeMatch(final Map<String, String> params) {
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super(params);
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}
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@Override
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public double compare(final Field a, final Field b, final Config conf) {
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if (a.isEmpty() || b.isEmpty())
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return -1;
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return Iterables.size(a) == Iterables.size(b) ? 1 : 0;
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}
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/**
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* Checks if is empty.
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*
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* @param a
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* the a
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* @return true, if is empty
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*/
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protected boolean isEmpty(final Iterable<?> a) {
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return (a == null) || Iterables.isEmpty(a);
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}
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}
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