org.apache.hadoop.hive.ql.exec.ObjectCacheWrapper 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.hadoop.hive.ql.exec;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import org.apache.hadoop.hive.ql.metadata.HiveException;
public class ObjectCacheWrapper implements ObjectCache {
private final String queryId;
private final ObjectCache globalCache;
public ObjectCacheWrapper(ObjectCache globalCache, String queryId) {
this.queryId = queryId;
this.globalCache = globalCache;
}
@Override
public void release(String key) {
globalCache.release(makeKey(key));
}
@Override
public T retrieve(String key, Callable fn) throws HiveException {
return globalCache.retrieve(makeKey(key), fn);
}
@Override
public Future retrieveAsync(String key, Callable fn)
throws HiveException {
return globalCache.retrieveAsync(makeKey(key), fn);
}
@Override
public void remove(String key) {
globalCache.remove(makeKey(key));
}
private String makeKey(String key) {
return queryId + "_" + key;
}
}