org.apache.jackrabbit.core.data.CachingDataRecord Maven / Gradle / Ivy
/*
* 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.jackrabbit.core.data;
import java.io.InputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* CachingDataRecord which stores reference to {@link CachingDataStore}. This
* class doesn't store any references to attributes but attributes are fetched
* on demand from {@link CachingDataStore}.
*/
public class CachingDataRecord extends AbstractDataRecord {
private static final Logger LOG = LoggerFactory.getLogger(CachingDataRecord.class);
private final CachingDataStore store;
public CachingDataRecord(CachingDataStore store, DataIdentifier identifier) {
super(store, identifier);
this.store = store;
}
@Override
public long getLastModified() {
try {
return store.getLastModified(getIdentifier());
} catch (DataStoreException dse) {
LOG.info("exception in getLastModified for identifier ["
+ getIdentifier() + "]. returning 0.", dse);
return 0;
}
}
@Override
public long getLength() throws DataStoreException {
return store.getLength(getIdentifier());
}
@Override
public InputStream getStream() throws DataStoreException {
return store.getStream(getIdentifier());
}
}