forked from D-Net/dnet-hadoop
177 lines
7.5 KiB
Java
177 lines
7.5 KiB
Java
package eu.dnetlib.dhp.resulttocommunityfromsemrel;
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import static eu.dnetlib.dhp.PropagationConstant.*;
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import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkHiveSession;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.google.gson.Gson;
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import eu.dnetlib.dhp.QueryInformationSystem;
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import eu.dnetlib.dhp.application.ArgumentApplicationParser;
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import eu.dnetlib.dhp.resulttocommunityfromorganization.ResultCommunityList;
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import eu.dnetlib.dhp.schema.oaf.Relation;
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import eu.dnetlib.dhp.schema.oaf.Result;
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import java.util.Arrays;
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import java.util.List;
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import org.apache.commons.io.IOUtils;
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import org.apache.hadoop.io.compress.GzipCodec;
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import org.apache.spark.SparkConf;
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import org.apache.spark.api.java.JavaSparkContext;
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import org.apache.spark.sql.Dataset;
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import org.apache.spark.sql.Encoders;
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import org.apache.spark.sql.Row;
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import org.apache.spark.sql.SparkSession;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class PrepareResultCommunitySetStep1 {
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private static final Logger log = LoggerFactory.getLogger(PrepareResultCommunitySetStep1.class);
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private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
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public static void main(String[] args) throws Exception {
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String jsonConfiguration =
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IOUtils.toString(
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PrepareResultCommunitySetStep1.class.getResourceAsStream(
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"/eu/dnetlib/dhp/resulttocommunityfromsemrel/input_preparecommunitytoresult_parameters.json"));
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(jsonConfiguration);
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parser.parseArgument(args);
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Boolean isSparkSessionManaged = isSparkSessionManaged(parser);
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log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
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String inputPath = parser.get("sourcePath");
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log.info("inputPath: {}", inputPath);
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final String outputPath = parser.get("outputPath");
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log.info("outputPath: {}", outputPath);
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final String resultClassName = parser.get("resultTableName");
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log.info("resultTableName: {}", resultClassName);
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SparkConf conf = new SparkConf();
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conf.set("hive.metastore.uris", parser.get("hive_metastore_uris"));
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final List<String> allowedsemrel = Arrays.asList(parser.get("allowedsemrels").split(";"));
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log.info("allowedSemRel: {}", new Gson().toJson(allowedsemrel));
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final String isLookupUrl = parser.get("isLookupUrl");
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log.info("isLookupUrl: {}", isLookupUrl);
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final List<String> communityIdList = QueryInformationSystem.getCommunityList(isLookupUrl);
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log.info("communityIdList: {}", new Gson().toJson(communityIdList));
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final String resultType =
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resultClassName.substring(resultClassName.lastIndexOf(".") + 1).toLowerCase();
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log.info("resultType: {}", resultType);
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Class<? extends Result> resultClazz =
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(Class<? extends Result>) Class.forName(resultClassName);
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runWithSparkHiveSession(
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conf,
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isSparkSessionManaged,
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spark -> {
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if (isTest(parser)) {
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removeOutputDir(spark, outputPath);
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}
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prepareInfo(
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spark,
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inputPath,
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outputPath,
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allowedsemrel,
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resultClazz,
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resultType,
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communityIdList);
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});
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}
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private static <R extends Result> void prepareInfo(
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SparkSession spark,
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String inputPath,
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String outputPath,
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List<String> allowedsemrel,
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Class<R> resultClazz,
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String resultType,
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List<String> communityIdList) {
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// read the relation table and the table related to the result it is using
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final JavaSparkContext sc = new JavaSparkContext(spark.sparkContext());
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org.apache.spark.sql.Dataset<Relation> relation =
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spark.createDataset(
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sc.textFile(inputPath + "/relation")
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.map(item -> OBJECT_MAPPER.readValue(item, Relation.class))
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.rdd(),
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Encoders.bean(Relation.class));
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relation.createOrReplaceTempView("relation");
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log.info("Reading Graph table from: {}", inputPath + "/" + resultType);
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Dataset<R> result = readPathEntity(spark, inputPath + "/" + resultType, resultClazz);
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result.createOrReplaceTempView("result");
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getPossibleResultcommunityAssociation(
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spark, allowedsemrel, outputPath + "/" + resultType, communityIdList);
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}
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private static void getPossibleResultcommunityAssociation(
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SparkSession spark,
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List<String> allowedsemrel,
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String outputPath,
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List<String> communityIdList) {
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String communitylist = getConstraintList(" co.id = '", communityIdList);
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String semrellist = getConstraintList(" relClass = '", allowedsemrel);
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/*
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associates to each result the set of community contexts they are associated to
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select id, collect_set(co.id) community_context " +
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" from result " +
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" lateral view explode (context) c as co " +
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" where datainfo.deletedbyinference = false "+ communitylist +
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" group by id
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associates to each target of a relation with allowed semantics the set of community context it could possibly
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inherit from the source of the relation
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*/
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String query =
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"Select target resultId, community_context "
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+ "from (select id, collect_set(co.id) community_context "
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+ " from result "
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+ " lateral view explode (context) c as co "
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+ " where datainfo.deletedbyinference = false "
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+ communitylist
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+ " group by id) p "
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+ "JOIN "
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+ "(select source, target "
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+ "from relation "
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+ "where datainfo.deletedbyinference = false "
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+ semrellist
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+ ") r "
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+ "ON p.id = r.source";
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org.apache.spark.sql.Dataset<Row> result_context = spark.sql(query);
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result_context.createOrReplaceTempView("result_context");
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// ( target, (mes, dh-ch-, ni))
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/*
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a dataset for example could be linked to more than one publication. For each publication linked to that dataset
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the previous query will produce a row: targetId set of community context the target could possibly inherit
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with the following query there will be a single row for each result linked to more than one result of the result type
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currently being used
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*/
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query =
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"select resultId , collect_set(co) communityList "
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+ "from result_context "
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+ "lateral view explode (community_context) c as co "
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+ "where length(co) > 0 "
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+ "group by resultId";
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spark.sql(query)
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.as(Encoders.bean(ResultCommunityList.class))
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.toJavaRDD()
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.map(r -> OBJECT_MAPPER.writeValueAsString(r))
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.saveAsTextFile(outputPath, GzipCodec.class);
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}
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}
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