forked from D-Net/dnet-hadoop
72 lines
2.0 KiB
Java
72 lines
2.0 KiB
Java
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package eu.dnetlib.dhp.broker.oa.util.aggregators.withRels;
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import org.apache.spark.sql.Encoder;
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import org.apache.spark.sql.Encoders;
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import org.apache.spark.sql.expressions.Aggregator;
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import eu.dnetlib.broker.objects.OaBrokerMainEntity;
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import scala.Tuple2;
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public class OaBrokerMainEntityAggregator<T>
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extends Aggregator<Tuple2<OaBrokerMainEntity, T>, OaBrokerMainEntity, OaBrokerMainEntity> {
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/**
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*
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*/
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private static final long serialVersionUID = -3687878788861013488L;
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@Override
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public OaBrokerMainEntity zero() {
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return new OaBrokerMainEntity();
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}
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@Override
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public OaBrokerMainEntity finish(final OaBrokerMainEntity g) {
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return g;
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}
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@Override
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public OaBrokerMainEntity reduce(final OaBrokerMainEntity g, final Tuple2<OaBrokerMainEntity, T> t) {
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if (g.getOriginalId() == null) {
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return t._1;
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} else if (t._2 instanceof RelatedSoftware) {
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g.getSoftwares().add(((RelatedSoftware) t._2).getRelSoftware());
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} else if (t._2 instanceof RelatedDataset) {
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g.getDatasets().add(((RelatedDataset) t._2).getRelDataset());
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} else if (t._2 instanceof RelatedPublication) {
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g.getPublications().add(((RelatedPublication) t._2).getRelPublication());
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} else if (t._2 instanceof RelatedProject) {
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g.getProjects().add(((RelatedProject) t._2).getRelProject());
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} else {
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throw new RuntimeException("Invalid Object: " + t._2.getClass());
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}
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return g;
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}
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@Override
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public OaBrokerMainEntity merge(final OaBrokerMainEntity g1, final OaBrokerMainEntity g2) {
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if (g1.getOriginalId() != null) {
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g1.getSoftwares().addAll(g2.getSoftwares());
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g1.getDatasets().addAll(g2.getDatasets());
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g1.getPublications().addAll(g2.getPublications());
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g1.getProjects().addAll(g2.getProjects());
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return g1;
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} else {
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return g2;
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}
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}
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@Override
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public Encoder<OaBrokerMainEntity> bufferEncoder() {
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return Encoders.bean(OaBrokerMainEntity.class);
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}
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@Override
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public Encoder<OaBrokerMainEntity> outputEncoder() {
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return Encoders.bean(OaBrokerMainEntity.class);
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}
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}
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