/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.util;
import org.h2.message.Trace;
/**
* The cache writer is called by the cache to persist changed data that needs to
* be removed from the cache.
*/
public interface CacheWriter {
/**
* Persist a record.
*
* @param entry the cache entry
*/
void writeBack(CacheObject entry);
/**
* Flush the transaction log, so that entries can be removed from the cache.
* This is only required if the cache is full and contains data that is not
* yet written to the log. It is required to write the log entries to the
* log first, because the log is 'write ahead'.
*/
void flushLog();
/**
* Get the trace writer.
*
* @return the trace writer
*/
Trace getTrace();
}