/** Read in an IN entry. */
public void readEntry(EnvironmentImpl envImpl, LogEntryHeader header, ByteBuffer entryBuffer) {
int logVersion = header.getVersion();
boolean version6OrLater = (logVersion >= 6);
if (version6OrLater) {
dbId = new DatabaseId();
dbId.readFromLog(entryBuffer, logVersion);
prevFullLsn = LogUtils.readLong(entryBuffer, false /*unpacked*/);
if (logVersion >= 8) {
prevDeltaLsn = LogUtils.readPackedLong(entryBuffer);
}
}
/* Read IN. */
in = newInstanceOfType();
in.readFromLog(entryBuffer, logVersion);
if (!version6OrLater) {
dbId = new DatabaseId();
dbId.readFromLog(entryBuffer, logVersion);
}
if (logVersion < 1) {
prevFullLsn = DbLsn.NULL_LSN;
} else if (logVersion == 1) {
long fileNum = LogUtils.readUnsignedInt(entryBuffer);
if (fileNum == 0xffffffffL) {
prevFullLsn = DbLsn.NULL_LSN;
} else {
prevFullLsn = DbLsn.makeLsn(fileNum, 0);
}
} else if (!version6OrLater) {
prevFullLsn = LogUtils.readLong(entryBuffer, true /*unpacked*/);
}
}
/**
* Extends its super class to read in database operation information.
*
* @see LNLogEntry#readEntry
*/
@Override
public void readEntry(EnvironmentImpl envImpl, LogEntryHeader header, ByteBuffer entryBuffer) {
readBaseLNEntry(envImpl, header, entryBuffer, false /*keyIsLastSerializedField*/);
/*
* The NameLNLogEntry was introduced in version 6. Before, a LNLogEntry
* was used for NameLNs, and there is no extra information in the log
* entry.
*/
int version = header.getVersion();
if (version >= 6) {
operationType = DbOperationType.readTypeFromLog(entryBuffer, version);
if (DbOperationType.isWriteConfigType(operationType)) {
replicatedCreateConfig = new ReplicatedDatabaseConfig();
replicatedCreateConfig.readFromLog(entryBuffer, version);
}
if (operationType == DbOperationType.TRUNCATE) {
truncateOldDbId = new DatabaseId();
truncateOldDbId.readFromLog(entryBuffer, version);
}
} else {
operationType = DbOperationType.NONE;
}
}
/**
* For a file header, the version is not available until after reading the item. Set the version
* in the entry header so it can be used by FileReaders, etc. [#16939]
*/
@Override
public void readEntry(EnvironmentImpl envImpl, LogEntryHeader header, ByteBuffer entryBuffer) {
super.readEntry(envImpl, header, entryBuffer);
FileHeader entry = (FileHeader) getMainItem();
header.setFileHeaderVersion(entry.getLogVersion());
}