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ResultRowMapper.java
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ResultRowMapper.java
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/**
* Copyright (C) 2019 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jopa.query.mapper;
import cz.cvut.kbss.jopa.sessions.UnitOfWorkImpl;
import cz.cvut.kbss.ontodriver.iteration.ResultRow;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Represents a single {@link cz.cvut.kbss.jopa.model.annotations.SparqlResultSetMapping} instance.
* <p>
* This instance can contain multiple {@link SparqlResultMapper} instances, representing the individual mappings
* specified by the {@link cz.cvut.kbss.jopa.model.annotations.SparqlResultSetMapping}.
*/
public class ResultRowMapper implements SparqlResultMapper {
private final String name;
private final List<SparqlResultMapper> rowMappers = new ArrayList<>();
public ResultRowMapper(String name) {
this.name = name;
}
/**
* Gets the name of the result set mapping represented by this mapper.
*
* @return Mapping name
*/
public String getName() {
return name;
}
List<SparqlResultMapper> getRowMappers() {
return Collections.unmodifiableList(rowMappers);
}
void addMapper(SparqlResultMapper mapper) {
rowMappers.add(mapper);
}
@Override
public Object map(ResultRow resultRow, UnitOfWorkImpl uow) {
if (rowMappers.size() == 1) {
return rowMappers.get(0).map(resultRow, uow);
}
final Object[] result = new Object[rowMappers.size()];
int i = 0;
for (SparqlResultMapper m : rowMappers) {
result[i++] = m.map(resultRow, uow);
}
return result;
}
}