| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.jena.query; |
| |
| import java.io.Closeable ; |
| |
| import org.apache.jena.query.QueryExecution ; |
| import org.apache.jena.query.ResultSet ; |
| import org.apache.jena.sparql.resultset.ResultSetWrapper ; |
| |
| /** A {@link ResultSet} that closes the associated {@link QueryExecution} |
| * via {@link AutoCloseable}. |
| */ |
| public class ResultSetCloseable extends ResultSetWrapper implements AutoCloseable, Closeable { |
| |
| /** Return a closable resultset for a {@link QueryExecution}. |
| * The {@link QueryExecution} must be for a {@code SELECT} query. |
| * @param queryExecution {@code QueryExecution} must be for a {@code SELECT} query. |
| * @return ResultSetCloseable |
| */ |
| public static ResultSetCloseable closeableResultSet(QueryExecution queryExecution) { |
| if ( queryExecution.getQuery() != null && ! queryExecution.getQuery().isSelectType() ) |
| throw new IllegalArgumentException("Not an execution for a SELECT query"); |
| return new ResultSetCloseable(queryExecution.execSelect(), queryExecution) ; |
| } |
| |
| private QueryExecution qexec ; |
| |
| public ResultSetCloseable(ResultSet rs, QueryExecution qexec) { |
| super(rs) ; |
| this.qexec = qexec ; |
| } |
| |
| @Override |
| public void close() { |
| qexec.close() ; |
| } |
| } |