org.openmdx.base.caching.datastore.NoSecondLevelCache Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: No Second Level Cache
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2020, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.base.caching.datastore;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import java.util.function.Predicate;
import javax.jdo.datastore.DataStoreCache.EmptyDataStoreCache;
import org.openmdx.base.naming.Path;
import org.openmdx.base.rest.cci.ObjectRecord;
/**
* No Second Level Cache
*
* @since openMDX 2.17
*/
public class NoSecondLevelCache extends EmptyDataStoreCache implements CacheAdapter {
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#containsKey(org.openmdx.base.naming.Path)
*/
@Override
public boolean containsKey(Path key) {
return false; // there is no cached object
}
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#offer(org.openmdx.base.rest.cci.ObjectRecord)
*/
@Override
public void offer(ObjectRecord objectRecord) {
// Do not cache the object
}
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#get(org.openmdx.base.naming.Path)
*/
@Override
public ObjectRecord get(Path key) {
return null; // there is no cached object
}
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#getAll(java.util.Set)
*/
@Override
public Map getAll(Set keys) {
return Collections.emptyMap(); // There are no cached objects
}
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#evictAll(java.util.function.Predicate)
*/
@Override
public void evictAll(Predicate filter) {
// There are no cached objects to be evicted
}
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#pinAll(java.util.function.Predicate)
*/
@Override
public void pinAll(Predicate filter) {
// No objects are pinned
}
/* (non-Javadoc)
* @see org.openmdx.base.caching.datastore.CacheAdapter#unpinAll(java.util.function.Predicate)
*/
@Override
public void unpinAll(Predicate filter) {
// No objects are pinned
}
/* (non-Javadoc)
* @see org.openmdx.kernel.jdo.JDODataStoreCache#unwrap(java.lang.Class)
*/
@Override
public T unwrap(Class clazz) {
throw new IllegalArgumentException(
clazz.getName() + " is not supprted by " + getClass().getName()
);
}
}