/* $HeadURL$
* $Id$
*
* Copyright (c) 2009-2010 DuraSpace
* http://duraspace.org
*
* In collaboration with Topaz Inc.
* http://www.topazproject.org
*
* Licensed 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.akubraproject.map;
import java.io.IOException;
import java.net.URI;
import java.util.Map;
import javax.transaction.Transaction;
import org.akubraproject.BlobStore;
import org.akubraproject.BlobStoreConnection;
import org.akubraproject.impl.AbstractBlobStore;
/**
* Wraps an existing {@link BlobStore} to provide a blob id mapping layer.
*
* @author Chris Wilper
*/
public class IdMappingBlobStore extends AbstractBlobStore {
private final BlobStore store;
private final IdMapper mapper;
/**
* Creates an instance.
*
* @param id the id associated with this store.
* @param store the store to wrap.
* @param mapper the mapper to use.
*/
public IdMappingBlobStore(URI id, BlobStore store, IdMapper mapper) {
super(id);
this.store = store;
this.mapper = mapper;
}
@Override
public BlobStoreConnection openConnection(Transaction tx, Map<String, String> hints) throws IOException {
BlobStoreConnection connection = store.openConnection(tx, hints);
return new IdMappingBlobStoreConnection(this, connection, mapper);
}
}