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SqlTimeSeriesMappingSource.java
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SqlTimeSeriesMappingSource.java
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/*
* © 2021. TU Dortmund University,
* Institute of Energy Systems, Energy Efficiency and Energy Economics,
* Research group Distribution grid planning and operation
*/
package edu.ie3.datamodel.io.source.sql;
import static edu.ie3.datamodel.io.source.sql.SqlDataSource.createBaseQueryString;
import edu.ie3.datamodel.io.connectors.SqlConnector;
import edu.ie3.datamodel.io.factory.SimpleEntityData;
import edu.ie3.datamodel.io.naming.DatabaseNamingStrategy;
import edu.ie3.datamodel.io.naming.EntityPersistenceNamingStrategy;
import edu.ie3.datamodel.io.source.TimeSeriesMappingSource;
import java.util.Map;
import java.util.Optional;
import java.util.UUID;
import java.util.stream.Collectors;
public class SqlTimeSeriesMappingSource extends TimeSeriesMappingSource {
private final EntityPersistenceNamingStrategy entityPersistenceNamingStrategy;
private final String queryFull;
private final SqlDataSource dataSource;
public SqlTimeSeriesMappingSource(
SqlConnector connector,
String schemaName,
EntityPersistenceNamingStrategy entityPersistenceNamingStrategy) {
this.dataSource =
new SqlDataSource(
connector, schemaName, new DatabaseNamingStrategy(entityPersistenceNamingStrategy));
this.entityPersistenceNamingStrategy = entityPersistenceNamingStrategy;
final String tableName =
entityPersistenceNamingStrategy.getEntityName(MappingEntry.class).orElseThrow();
this.queryFull = createBaseQueryString(schemaName, tableName);
}
public Map<UUID, UUID> getMapping() {
return dataSource.queryToListOfMaps(queryFull, ps -> {}).stream()
.map(this::createEntity)
.flatMap(Optional::stream)
.collect(Collectors.toMap(MappingEntry::getParticipant, MappingEntry::getTimeSeries));
}
protected Optional<MappingEntry> createEntity(Map<String, String> fieldToValues) {
SimpleEntityData entityData = new SimpleEntityData(fieldToValues, MappingEntry.class);
return mappingFactory.get(entityData);
}
}