org.ehcache.transactions.xa.internal.SoftLockValueCombinedCopier Maven / Gradle / Ivy

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The transactions module of Ehcache 3

There is a newer version: 3.10.8

/*
 * 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 implements Copier> {

  private final Copier valueCopier;

  SoftLockValueCombinedCopier(Copier valueCopier) {
    this.valueCopier = valueCopier;
  }

  @Override
  public SoftLock copyForRead(SoftLock obj) {
    T oldValue = valueCopier.copyForRead(obj.getOldValue());
    XAValueHolder valueHolder = obj.getNewValueHolder();
    XAValueHolder newValueHolder = valueHolder == null ? null : new XAValueHolder(valueHolder, valueCopier.copyForRead(valueHolder.value()));
    return new SoftLock(obj.getTransactionId(), oldValue, newValueHolder);
  }

  @Override
  public SoftLock copyForWrite(SoftLock obj) {
    T oldValue = valueCopier.copyForWrite(obj.getOldValue());
    XAValueHolder valueHolder = obj.getNewValueHolder();
    XAValueHolder newValueHolder = valueHolder == null ? null : new XAValueHolder(valueHolder, valueCopier.copyForWrite(valueHolder.value()));
    return new SoftLock(obj.getTransactionId(), oldValue, newValueHolder);
  }

}