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Neo4j kernel is a lightweight, embedded Java database designed to store data structured as graphs rather than tables. For more information, see http://neo4j.org.

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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 .
 */
package org.neo4j.kernel.impl.api.dbms;

import org.neo4j.collection.RawIterator;
import org.neo4j.kernel.api.KernelTransaction;
import org.neo4j.kernel.api.dbms.DbmsOperations;
import org.neo4j.kernel.api.exceptions.ProcedureException;
import org.neo4j.kernel.api.proc.CallableProcedure;
import org.neo4j.kernel.api.proc.ProcedureSignature;
import org.neo4j.kernel.api.security.AuthSubject;
import org.neo4j.kernel.impl.proc.Procedures;

public class NonTransactionalDbmsOperations implements DbmsOperations
{

    private final Procedures procedures;
    private final KernelTransaction transaction;

    public NonTransactionalDbmsOperations( Procedures procedures, KernelTransaction transaction )
    {
        this.procedures = procedures;
        this.transaction = transaction;
    }

    @Override
    public RawIterator procedureCallDbms( ProcedureSignature.ProcedureName name,
            Object[] input ) throws ProcedureException
    {
        CallableProcedure.BasicContext ctx = new CallableProcedure.BasicContext();
        ctx.put( CallableProcedure.Context.KERNEL_TRANSACTION, transaction );
        if ( transaction.mode() instanceof AuthSubject )
        {
            AuthSubject subject = (AuthSubject) transaction.mode();
            ctx.put( CallableProcedure.Context.AUTH_SUBJECT, subject );
        }
        return procedures.call( ctx, name, input );
    }

    public static class Factory implements DbmsOperations.Factory
    {
        private final Procedures procedures;

        public Factory( Procedures procedures )
        {
            this.procedures = procedures;
        }

        @Override
        public DbmsOperations newInstance( KernelTransaction tx )
        {
            return new NonTransactionalDbmsOperations( procedures, tx );
        }
    }
}