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CypherStatementRunner.java
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CypherStatementRunner.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j 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 org.neo4j.bolt.v1.runtime.cypher;
import java.util.Map;
import org.neo4j.bolt.v1.runtime.spi.StatementRunner;
import org.neo4j.graphdb.Result;
import org.neo4j.kernel.GraphDatabaseQueryService;
import org.neo4j.kernel.api.exceptions.KernelException;
import org.neo4j.kernel.api.security.AuthSubject;
import org.neo4j.kernel.impl.coreapi.InternalTransaction;
import org.neo4j.kernel.impl.coreapi.PropertyContainerLocker;
import org.neo4j.kernel.impl.query.Neo4jTransactionalContextFactory;
import org.neo4j.kernel.impl.query.QueryExecutionEngine;
import org.neo4j.kernel.impl.query.QuerySource;
import org.neo4j.kernel.impl.query.TransactionalContext;
import org.neo4j.kernel.impl.query.TransactionalContextFactory;
import static org.neo4j.kernel.api.KernelTransaction.Type.implicit;
public class CypherStatementRunner implements StatementRunner
{
private static final PropertyContainerLocker locker = new PropertyContainerLocker();
private final QueryExecutionEngine queryExecutionEngine;
private final TransactionalContextFactory contextFactory;
private final GraphDatabaseQueryService queryService;
public CypherStatementRunner( QueryExecutionEngine queryExecutionEngine, GraphDatabaseQueryService queryService )
{
this.queryExecutionEngine = queryExecutionEngine;
this.contextFactory = new Neo4jTransactionalContextFactory( queryService, locker );
this.queryService = queryService;
}
@Override
public Result run(
final String querySource,
final AuthSubject authSubject,
final String queryText,
final Map<String, Object> queryParameters
) throws KernelException
{
InternalTransaction transaction = queryService.beginTransaction( implicit, authSubject );
TransactionalContext transactionalContext =
contextFactory.newContext( new QuerySource( "bolt-session", querySource ), transaction, queryText,
queryParameters);
return queryExecutionEngine.executeQuery( queryText, queryParameters, transactionalContext );
}
}