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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.core.ThreadToStatementContextBridge;
import org.neo4j.kernel.impl.coreapi.InternalTransaction;
import org.neo4j.kernel.impl.coreapi.PropertyContainerLocker;
import org.neo4j.kernel.impl.query.Neo4jTransactionalContext;
import org.neo4j.kernel.impl.query.QueryExecutionEngine;
import org.neo4j.kernel.impl.query.QuerySession;
import static java.lang.String.format;
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 ThreadToStatementContextBridge txBridge;
private GraphDatabaseQueryService queryService;
public CypherStatementRunner( QueryExecutionEngine queryExecutionEngine, ThreadToStatementContextBridge txBridge,
GraphDatabaseQueryService queryService )
{
this.queryExecutionEngine = queryExecutionEngine;
this.txBridge = txBridge;
this.queryService = queryService;
}
@Override
public Result run( final String querySource, final AuthSubject authSubject, final String statement, final Map<String, Object> params )
throws KernelException
{
InternalTransaction transaction = queryService.beginTransaction( implicit, authSubject );
Neo4jTransactionalContext transactionalContext =
new Neo4jTransactionalContext( queryService, transaction, txBridge.get(), locker );
QuerySession session = new BoltQuerySession( transactionalContext, querySource );
return queryExecutionEngine.executeQuery( statement, params, session );
}
private static class BoltQuerySession extends QuerySession
{
private final String querySource;
BoltQuerySession( Neo4jTransactionalContext transactionalContext, String querySource )
{
super( transactionalContext );
this.querySource = querySource;
}
@Override
public String toString()
{
return format( "bolt-session\t%s", querySource );
}
}
}