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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.exceptions.FactoryException;
import edu.ie3.datamodel.io.connectors.SqlConnector;
import edu.ie3.datamodel.io.naming.DatabaseNamingStrategy;
import edu.ie3.datamodel.io.naming.EntityPersistenceNamingStrategy;
import edu.ie3.datamodel.io.source.SourceValidator;
import edu.ie3.datamodel.io.source.TimeSeriesMappingSource;
import java.sql.SQLException;
import java.util.Map;
import java.util.stream.Stream;
public class SqlTimeSeriesMappingSource extends TimeSeriesMappingSource {
private final EntityPersistenceNamingStrategy entityPersistenceNamingStrategy;
private final String queryFull;
private final String tableName;
private final SqlDataSource dataSource;
public SqlTimeSeriesMappingSource(
SqlConnector connector,
String schemaName,
EntityPersistenceNamingStrategy entityPersistenceNamingStrategy) {
this.dataSource =
new SqlDataSource(
connector, schemaName, new DatabaseNamingStrategy(entityPersistenceNamingStrategy));
this.entityPersistenceNamingStrategy = entityPersistenceNamingStrategy;
this.tableName =
entityPersistenceNamingStrategy.getEntityName(MappingEntry.class).orElseThrow();
this.queryFull = createBaseQueryString(schemaName, tableName);
}
@Override
public Stream<Map<String, String>> getMappingSourceData(SourceValidator validator) {
try {
dataSource.connector.validateDBTable(tableName, TimeSeriesMappingSource.class, validator);
} catch (SQLException e) {
throw new FactoryException(e);
}
return dataSource.executeQuery(queryFull);
}
}