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/*
* Copyright 2006-2013 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* 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 com.amazon.carbonado.repo.replicated;
import java.util.concurrent.TimeUnit;
import com.amazon.carbonado.IsolationLevel;
import com.amazon.carbonado.PersistException;
import com.amazon.carbonado.Transaction;
/**
* ReadOnlyTransaction wraps an another transaction. It's only function is to
* serve as a marker for the ReplicatedStorage triggers that no write
* operations are allowed.
*
* @author Jesse Morgan
*/
class ReadOnlyTransaction implements Transaction {
private final Transaction mTxn;
public ReadOnlyTransaction(Transaction txn) {
mTxn = txn;
}
@Override
public void commit() throws PersistException {
mTxn.commit();
}
@Override
public void exit() throws PersistException {
mTxn.exit();
}
@Override
public void setForUpdate(boolean forUpdate) {
mTxn.setForUpdate(forUpdate);
}
@Override
public boolean isForUpdate() {
return mTxn.isForUpdate();
}
@Override
public void setDesiredLockTimeout(int timeout, TimeUnit unit) {
mTxn.setDesiredLockTimeout(timeout, unit);
}
@Override
public IsolationLevel getIsolationLevel() {
return mTxn.getIsolationLevel();
}
@Override
public void detach() {
mTxn.detach();
}
@Override
public void attach() {
mTxn.attach();
}
@Override
public boolean preCommit() throws PersistException {
return mTxn.preCommit();
}
@Override
public String toString() {
return "ReadOnlyTransaction wrapping { " + mTxn.toString() + " }";
}
}
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