org.apache.jena.tdb.base.block.BlockMgrSwitcher Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jena-tdb Show documentation

TDB is a storage subsystem for Jena and ARQ, it is a native triple store providing persistent storage of triples/quads.

There is a newer version: 4.10.0

/*
 * 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.tdb.base.block;

public class BlockMgrSwitcher extends BlockMgrWrapper 
{
    protected final BlockMgr blockMgr1 ;
    protected final BlockMgr blockMgr2 ;

    public BlockMgrSwitcher(BlockMgr blockMgr1, BlockMgr blockMgr2)
    {
        super(blockMgr1) ;
        this.blockMgr1 = blockMgr1 ;
        this.blockMgr2 = blockMgr2 ;
    }

    public void switchover()
    {
        if ( super.blockMgr == blockMgr1 )
            setBlockMgr(blockMgr2) ;
        else
            setBlockMgr(blockMgr1) ;
    }
}