forked from D-Net/dnet-hadoop
104 lines
4.5 KiB
Java
104 lines
4.5 KiB
Java
package eu.dnetlib.dedup;
|
|
|
|
import com.fasterxml.jackson.databind.DeserializationFeature;
|
|
import com.fasterxml.jackson.databind.ObjectMapper;
|
|
import eu.dnetlib.dhp.application.ArgumentApplicationParser;
|
|
import eu.dnetlib.dhp.schema.oaf.DataInfo;
|
|
import eu.dnetlib.dhp.schema.oaf.Relation;
|
|
import eu.dnetlib.dhp.utils.DHPUtils;
|
|
import org.apache.commons.io.IOUtils;
|
|
import org.apache.hadoop.io.compress.GzipCodec;
|
|
import org.apache.spark.api.java.JavaPairRDD;
|
|
import org.apache.spark.api.java.JavaRDD;
|
|
import org.apache.spark.api.java.JavaSparkContext;
|
|
import org.apache.spark.api.java.Optional;
|
|
import org.apache.spark.api.java.function.Function;
|
|
import org.apache.spark.api.java.function.MapFunction;
|
|
import org.apache.spark.api.java.function.PairFunction;
|
|
import org.apache.spark.sql.*;
|
|
import scala.Tuple2;
|
|
|
|
import java.io.IOException;
|
|
|
|
public class SparkPropagateRelationsJob {
|
|
enum FieldType {
|
|
SOURCE,
|
|
TARGET
|
|
}
|
|
final static String SOURCEJSONPATH = "$.source";
|
|
final static String TARGETJSONPATH = "$.target";
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
final ArgumentApplicationParser parser = new ArgumentApplicationParser(IOUtils.toString(SparkPropagateRelationsJob.class.getResourceAsStream("/eu/dnetlib/dhp/dedup/dedup_propagate_relation_parameters.json")));
|
|
parser.parseArgument(args);
|
|
final SparkSession spark = SparkSession
|
|
.builder()
|
|
.appName(SparkUpdateEntityJob.class.getSimpleName())
|
|
.master(parser.get("master"))
|
|
.getOrCreate();
|
|
|
|
final JavaSparkContext sc = new JavaSparkContext(spark.sparkContext());
|
|
final String relationPath = parser.get("relationPath");
|
|
final String mergeRelPath = parser.get("mergeRelPath");
|
|
final String targetRelPath = parser.get("targetRelPath");
|
|
|
|
|
|
final Dataset<Relation> merge = spark.read().load(mergeRelPath).as(Encoders.bean(Relation.class)).where("relClass == 'merges'");
|
|
|
|
final Dataset<Relation> rels= spark.read().load(relationPath).as(Encoders.bean(Relation.class));
|
|
|
|
|
|
final Dataset<Relation> firstJoin = rels.joinWith(merge, merge.col("target").equalTo(rels.col("source")), "left_outer")
|
|
.map((MapFunction<Tuple2<Relation, Relation>, Relation>) r -> {
|
|
final Relation mergeRelation = r._2();
|
|
final Relation relation = r._1();
|
|
|
|
if(mergeRelation!= null)
|
|
relation.setSource(mergeRelation.getSource());
|
|
return relation;
|
|
}, Encoders.bean(Relation.class));
|
|
|
|
final Dataset<Relation> secondJoin = firstJoin.joinWith(merge, merge.col("target").equalTo(firstJoin.col("target")), "left_outer")
|
|
.map((MapFunction<Tuple2<Relation, Relation>, Relation>) r -> {
|
|
final Relation mergeRelation = r._2();
|
|
final Relation relation = r._1();
|
|
if (mergeRelation != null )
|
|
relation.setTarget(mergeRelation.getSource());
|
|
return relation;
|
|
}, Encoders.bean(Relation.class));
|
|
|
|
secondJoin.write().mode(SaveMode.Overwrite).save(targetRelPath);
|
|
}
|
|
|
|
private static boolean containsDedup(final String json) {
|
|
final String source = DHPUtils.getJPathString(SOURCEJSONPATH, json);
|
|
final String target = DHPUtils.getJPathString(TARGETJSONPATH, json);
|
|
|
|
return source.toLowerCase().contains("dedup") || target.toLowerCase().contains("dedup");
|
|
}
|
|
|
|
|
|
private static String replaceField(final String json, final String id, final FieldType type) {
|
|
ObjectMapper mapper = new ObjectMapper();
|
|
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
|
|
try {
|
|
Relation relation = mapper.readValue(json, Relation.class);
|
|
if (relation.getDataInfo() == null)
|
|
relation.setDataInfo(new DataInfo());
|
|
relation.getDataInfo().setDeletedbyinference(false);
|
|
switch (type) {
|
|
case SOURCE:
|
|
relation.setSource(id);
|
|
return mapper.writeValueAsString(relation);
|
|
case TARGET:
|
|
relation.setTarget(id);
|
|
return mapper.writeValueAsString(relation);
|
|
default:
|
|
throw new IllegalArgumentException("");
|
|
}
|
|
} catch (IOException e) {
|
|
throw new RuntimeException("unable to deserialize json relation: " + json, e);
|
|
}
|
|
}
|
|
}
|