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package eu.dnetlib.data.mapreduce.hbase.broker.enrich;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Map;
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import com.google.common.base.Function;
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import com.google.common.base.Predicate;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Lists;
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import eu.dnetlib.data.mapreduce.util.DedupUtils;
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import eu.dnetlib.data.mapreduce.util.OafDecoder;
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import eu.dnetlib.data.mapreduce.util.OafRowKeyDecoder;
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import eu.dnetlib.data.proto.OafProtos.Oaf;
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import eu.dnetlib.data.proto.TypeProtos.Type;
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import org.apache.commons.collections.MapUtils;
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import org.apache.hadoop.hbase.client.Result;
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import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
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import org.apache.hadoop.hbase.util.Bytes;
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/**
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* Created by claudio on 08/07/16.
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*/
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public class ProjectEnrichmentMapper extends AbstractEnrichmentMapper {
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@Override
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protected String counterGroup() {
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return "Broker Enrichment projects";
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}
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@Override
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protected void map(final ImmutableBytesWritable key, final Result value, final Context context) throws IOException, InterruptedException {
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final Type type = getEntityType(key);
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final byte[] body = value.getValue(Bytes.toBytes(type.toString()), Bytes.toBytes("body"));
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if (body == null) {
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context.getCounter(counterGroup(), "missing metadata").increment(1);
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return;
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}
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switch (type) {
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case project:
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for (final byte[] resultId : listRelatedIds(value, "resultProject_outcome_produces")) {
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emit(context, resultId, body, "project");
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}
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break;
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case result:
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final Oaf.Builder oafBuilder = Oaf.newBuilder(OafDecoder.decode(body).getOaf());
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for (final String relName : Arrays.asList("resultProject_outcome_isProducedBy")) { // TODO add dataset rels
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for (final Oaf rel : listRelations(value, relName)) {
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oafBuilder.getEntityBuilder().addCachedOafRel(rel);
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context.getCounter(counterGroup(), "rel: " + relName).increment(1);
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}
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}
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final Map<byte[], byte[]> mergedIn = value.getFamilyMap(DedupUtils.getDedupCF_mergedInBytes(Type.result));
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if (MapUtils.isEmpty(mergedIn) & !DedupUtils.isRoot(key)) {
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emit(context, key.copyBytes(), oafBuilder.build().toByteArray(), "result not deduped");
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} else if (DedupUtils.isRoot(key)) {
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emit(context, key.copyBytes(), oafBuilder.build().toByteArray(), "result merges");
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} else {
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emit(context, getRootId(mergedIn), oafBuilder.build().toByteArray(), "result mergedIn");
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}
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break;
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default:
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throw new IllegalArgumentException("invalid type: " + type);
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}
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}
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private Iterable<Oaf> listRelations(final Result value, final String relType) {
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//TODO consider only relationshipt not deletedbyinference
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final Map<byte[], byte[]> map = value.getFamilyMap(Bytes.toBytes(relType));
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if (MapUtils.isNotEmpty(map)) {
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return Iterables.filter(Iterables.transform(map.values(), new Function<byte[], Oaf>() {
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@Override
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public Oaf apply(final byte[] input) {
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return OafDecoder.decode(input).getOaf();
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}
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}), new Predicate<Oaf>() {
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@Override
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public boolean apply(final Oaf rel) {
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return !rel.getRel().getTarget().contains("unidentified");
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}
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});
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} else {
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return Lists.newArrayList();
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}
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}
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private Iterable<byte[]> listRelatedIds(final Result value, final String relType) {
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//TODO consider only relationshipt not deletedbyinference
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final Map<byte[], byte[]> map = value.getFamilyMap(Bytes.toBytes(relType));
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if (MapUtils.isNotEmpty(map)) {
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return map.keySet();
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} else {
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return Lists.newArrayList();
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}
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}
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private Type getEntityType(final ImmutableBytesWritable key) {
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return OafRowKeyDecoder.decode(key.copyBytes()).getType();
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}
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private byte[] getRootId(final Map<byte[], byte[]> mergedIn) {
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return Iterables.getOnlyElement(mergedIn.keySet());
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}
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}
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