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This commit is contained in:
Serafeim Chatzopoulos 2023-07-28 19:03:47 +03:00
parent be320ba3c1
commit ebfba38ab6
1 changed files with 22 additions and 36 deletions
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58
dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/bipaffiliations/PrepareAffiliationRelations.java
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@ -10,15 +10,15 @@ import java.util.stream.Collectors;
import org.apache.commons.io.IOUtils;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.compress.GzipCodec;
import org.apache.hadoop.mapred.SequenceFileOutputFormat;
import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.apache.spark.api.java.function.FlatMapFunction;
import org.apache.spark.api.java.function.MapFunction;
import org.apache.spark.sql.*;
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Encoders;
import org.apache.spark.sql.SparkSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -82,45 +82,32 @@ public class PrepareAffiliationRelations implements Serializable {
private static <I extends Result> void prepareAffiliationRelations(SparkSession spark, String inputPath,
String outputPath) {
final JavaSparkContext sc = JavaSparkContext.fromSparkContext(spark.sparkContext());
// load and parse affiliation relations from HDFS
JavaRDD<AffiliationRelationDeserializer> affiliationRelationsDeserializeRDD = sc
.textFile(inputPath)
.map(item -> OBJECT_MAPPER.readValue(item, AffiliationRelationDeserializer.class));
Dataset<Row> df = spark
.read()
.schema("`DOI` STRING, `Matchings` ARRAY<STRUCT<`RORid`:ARRAY<STRING>,`Confidence`:DOUBLE>>")
.json(inputPath);
// convert affiliation to an internal representation
Dataset<AffiliationRelationModel> affiliationRelations = spark
.createDataset(
affiliationRelationsDeserializeRDD
.flatMap(
entry -> entry
.getMatchings()
.stream()
.flatMap(
matching -> matching
.getRorId()
.stream()
.map(
rorId -> new AffiliationRelationModel(
entry.getDoi(),
rorId,
matching.getConfidence())))
.collect(Collectors.toList())
.iterator())
.rdd(),
Encoders.bean(AffiliationRelationModel.class));
// unroll nested arrays
df = df
.withColumn("matching", functions.explode(new Column("Matchings")))
.withColumn("rorid", functions.explode(new Column("matching.RORid")))
.select(
new Column("DOI").as("doi"),
new Column("rorid"),
new Column("matching.Confidence").as("confidence"));
// prepare action sets for affiliation relations
affiliationRelations
.flatMap((FlatMapFunction<AffiliationRelationModel, Relation>) affRel -> {
df
.toJavaRDD()
.flatMap((FlatMapFunction<Row, Relation>) row -> {
// DOI to OpenAIRE id
final String paperId = ID_PREFIX
+ IdentifierFactory.md5(CleaningFunctions.normalizePidValue("doi", affRel.getDoi()));
+ IdentifierFactory.md5(CleaningFunctions.normalizePidValue("doi", row.getAs("doi")));
// ROR id to OpenAIRE id
final String affId = GenerateRorActionSetJob.calculateOpenaireId(affRel.getRorId());
final String affId = GenerateRorActionSetJob.calculateOpenaireId(row.getAs("rorid"));
Qualifier qualifier = OafMapperUtils
.qualifier(
@ -137,18 +124,17 @@ public class PrepareAffiliationRelations implements Serializable {
true,
false,
qualifier,
Double.toString(affRel.getConfidence()));
Double.toString(row.getAs("confidence")));
// return bi-directional relations
return getAffiliationRelationPair(paperId, affId, dataInfo).iterator();
}, Encoders.bean(Relation.class))
.toJavaRDD()
})
.map(p -> new AtomicAction(Relation.class, p))
.mapToPair(
aa -> new Tuple2<>(new Text(aa.getClazz().getCanonicalName()),
new Text(OBJECT_MAPPER.writeValueAsString(aa))))
.saveAsHadoopFile(outputPath, Text.class, Text.class, SequenceFileOutputFormat.class);
.saveAsHadoopFile(outputPath, Text.class, Text.class, SequenceFileOutputFormat.class, GzipCodec.class);
}