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//package eu.dnetlib.data.mapreduce.hbase.dedup.cc;
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//
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//import java.io.IOException;
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//import java.nio.ByteBuffer;
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//import java.util.Set;
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//
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//import com.google.common.collect.Sets;
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//import eu.dnetlib.data.mapreduce.JobParams;
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//import eu.dnetlib.data.mapreduce.util.DedupUtils;
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//import eu.dnetlib.data.proto.DNGFProtos.DNGF;
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//import eu.dnetlib.data.proto.DNGFProtos.DNGFRel;
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//import eu.dnetlib.data.proto.KindProtos.Kind;
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//import eu.dnetlib.data.proto.SubRelProtos.Dedup;
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//import eu.dnetlib.data.proto.TypeProtos.Type;
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//import eu.dnetlib.data.transform.xml.AbstractDNetXsltFunctions;
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//import eu.dnetlib.pace.config.DedupConfig;
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//import org.apache.commons.logging.Log;
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//import org.apache.commons.logging.LogFactory;
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//import org.apache.hadoop.hbase.client.Put;
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//import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
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//import org.apache.hadoop.hbase.mapreduce.TableReducer;
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//import org.apache.hadoop.hbase.util.Bytes;
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//import org.apache.hadoop.io.Text;
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//
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///**
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// * Created by claudio on 15/10/15.
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// */
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//public class ConnectedComponentsReducer extends TableReducer<Text, VertexWritable, ImmutableBytesWritable> {
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//
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// private static final Log log = LogFactory.getLog(ConnectedComponentsReducer.class);
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//
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// private DedupConfig dedupConf;
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//
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// private byte[] cfMergedIn;
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//
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// private byte[] cfMerges;
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//
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// @Override
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// protected void setup(final Context context) {
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//
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// dedupConf = DedupConfig.load(context.getConfiguration().get(JobParams.DEDUP_CONF));
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// log.info("dedup findRoots mapper\nwf conf: " + dedupConf.toString());
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//
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// final Type type = Type.valueOf(dedupConf.getWf().getEntityType());
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// cfMergedIn = DedupUtils.getDedupCF_mergedInBytes(type);
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// cfMerges = DedupUtils.getDedupCF_mergesBytes(type);
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// }
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//
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// @Override
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// protected void reduce(Text key, Iterable<VertexWritable> values, Context context) throws IOException, InterruptedException {
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//
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// final Set<String> set = Sets.newHashSet();
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//
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// for(VertexWritable v : values) {
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// for(Text t : v.getEdges()) {
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// set.add(t.toString());
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// }
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// }
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//
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// final byte[] root = DedupUtils.newIdBytes(ByteBuffer.wrap(Bytes.toBytes(key.toString())), dedupConf.getWf().getDedupRun());
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//
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// for(String q : set) {
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// final byte[] qb = Bytes.toBytes(q);
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// emitDedupRel(context, cfMergedIn, qb, root, buildRel(qb, root, Dedup.RelName.isMergedIn));
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// emitDedupRel(context, cfMerges, root, qb, buildRel(root, qb, Dedup.RelName.merges));
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//
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// context.getCounter(dedupConf.getWf().getEntityType(), "dedupRel (x2)").increment(1);
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// }
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//
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// }
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//
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// private void emitDedupRel(final Context context, final byte[] cf, final byte[] from, final byte[] to, final byte[] value) throws IOException,
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// InterruptedException {
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// final Put put = new Put(from).add(cf, to, value);
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// put.setWriteToWAL(JobParams.WRITE_TO_WAL);
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// context.write(new ImmutableBytesWritable(from), put);
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// }
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//
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// private byte[] buildRel(final byte[] from, final byte[] to, final Dedup.RelName relClass) {
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// final DNGFRel.Builder oafRel = DedupUtils.getDedup(dedupConf, new String(from), new String(to), relClass);
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// final DNGF oaf =
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// DNGF.newBuilder()
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// .setKind(Kind.relation)
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// .setLastupdatetimestamp(System.currentTimeMillis())
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// .setDataInfo(
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// AbstractDNetXsltFunctions.getDataInfo(null, "", "0.8", false, true).setInferenceprovenance(
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// dedupConf.getWf().getConfigurationId())).setRel(oafRel)
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// .build();
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// return oaf.toByteArray();
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// }
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//
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//}
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