forked from D-Net/dnet-hadoop
79 lines
1.8 KiB
Java
79 lines
1.8 KiB
Java
package eu.dnetlib.pace.model.gt;
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import java.util.Collection;
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import java.util.HashSet;
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import com.google.common.base.Function;
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import com.google.common.collect.ComparisonChain;
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import com.google.common.collect.Ordering;
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import com.google.common.collect.Sets;
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import com.google.gson.Gson;
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public class CoAuthors extends HashSet<CoAuthor> implements Comparable<CoAuthors> {
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private static final long serialVersionUID = 2525591524516562892L;
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private Function<CoAuthors, Integer> hashFunction;
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private static Function<CoAuthors, Integer> defaultHashFunction = new Function<CoAuthors, Integer>() {
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@Override
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public Integer apply(final CoAuthors input) {
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int res = 0;
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for (final CoAuthor a : input) {
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res += a.hashCode();
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}
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return res;
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}
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};
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public CoAuthors() {
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super();
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}
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public CoAuthors(final Collection<CoAuthor> coauthors) {
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super(coauthors);
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}
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public CoAuthors(final CoAuthor coauthor) {
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super(Sets.newHashSet(coauthor));
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}
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public Function<CoAuthors, Integer> getHashFunction() {
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return hashFunction;
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}
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public void setHashFunction(final Function<CoAuthors, Integer> hashFunction) {
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this.hashFunction = hashFunction;
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}
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@Override
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public int compareTo(final CoAuthors a) {
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return ComparisonChain.start()
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.compare(this.size(), a.size(), Ordering.natural().nullsLast())
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.result();
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}
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@Override
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public String toString() {
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return new Gson().toJson(this);
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}
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@Override
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public boolean equals(final Object o) {
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final boolean res = o instanceof CoAuthors;
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return res && (Sets.intersection(this, (CoAuthors) o).size() == this.size());
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}
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public String hashCodeString() {
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return String.valueOf(hashCode());
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}
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@Override
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public int hashCode() {
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return (getHashFunction() != null) ? getHashFunction().apply(this) : defaultHashFunction.apply(this);
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}
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}
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