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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.transaction;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
/**
* A convenience base transaction class for multi-operation transactions
* which maintains the ordered list of operations to commit and provides a default
* implementation of rollbackOrLog which logs a SEVERE message.
*
* @author bratseth
*/
public abstract class AbstractTransaction implements Transaction {
private static final Logger log = Logger.getLogger(AbstractTransaction.class.getName());
private final List<Operation> operations = new ArrayList<>();
protected AbstractTransaction() { }
@Override
public Transaction add(Operation operation) {
this.operations.add(operation);
return this;
}
@Override
public Transaction add(List<Operation> operations) {
this.operations.addAll(operations);
return this;
}
@Override
public List<Operation> operations() { return operations; }
/** Default implementations which logs a severe message. Operations should implement toString to use this. */
@Override
public void rollbackOrLog() {
log.severe("The following operations were incorrectly committed and probably require " +
"manual correction: " + operations());
}
/** Default implementation which only clears operations */
@Override
public void close() {
operations.clear();
}
}
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