/*
* Copyright Terracotta, Inc.
*
* 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.ehcache.transactions.xa.internal;
import org.ehcache.spi.copy.Copier;
/**
* The {@link Copier} that is responsible for copying a {@link SoftLock} containing a value.
*
* @author Ludovic Orban
*/
class SoftLockValueCombinedCopier<T> implements Copier<SoftLock<T>> {
private final Copier<T> valueCopier;
SoftLockValueCombinedCopier(Copier<T> valueCopier) {
this.valueCopier = valueCopier;
}
@Override
public SoftLock<T> copyForRead(SoftLock<T> obj) {
T oldValue = valueCopier.copyForRead(obj.getOldValue());
XAValueHolder<T> valueHolder = obj.getNewValueHolder();
XAValueHolder<T> newValueHolder = valueHolder == null ? null : new XAValueHolder<T>(valueHolder, valueCopier.copyForRead(valueHolder.value()));
return new SoftLock<T>(obj.getTransactionId(), oldValue, newValueHolder);
}
@Override
public SoftLock<T> copyForWrite(SoftLock<T> obj) {
T oldValue = valueCopier.copyForWrite(obj.getOldValue());
XAValueHolder<T> valueHolder = obj.getNewValueHolder();
XAValueHolder<T> newValueHolder = valueHolder == null ? null : new XAValueHolder<T>(valueHolder, valueCopier.copyForWrite(valueHolder.value()));
return new SoftLock<T>(obj.getTransactionId(), oldValue, newValueHolder);
}
}