/*
* Copy all collections that will be needed to convert masterTxn to this
* ReplayTxn. Note that we do not need to copy the openDatabaseHandle
* collection. That collection is only needed by an application-facing
* Txn, so that those database handles can be invalidated if
* needed. ReplayTxn is not application-facing, and uses DatabaseImpls
* rather than Databases.
*/
public void copyDatabasesForConversion(Txn masterTxn) {
if (masterTxn.getUndoDatabases() != null) {
if (undoDatabases == null) {
undoDatabases = new HashMap<DatabaseId, DatabaseImpl>();
}
undoDatabases.putAll(masterTxn.getUndoDatabases());
}
if (masterTxn.getDeletedDatabases() != null) {
if (deletedDatabases == null) {
deletedDatabases = new HashSet<DatabaseCleanupInfo>();
}
deletedDatabases.addAll(masterTxn.getDeletedDatabases());
}
}
@Override
protected void close(boolean isCommit) throws DatabaseException {
super.close(isCommit);
if (activeTxns != null) {
Txn removed = activeTxns.remove(getId());
assert removed != null : "txn was not in map " + this + " " + LoggerUtils.getStackTrace();
}
}
/**
* Get a locker for a write operation.
*
* @param autoTxnIsReplicated is true if this transaction is executed on a rep group master, and
* needs to be broadcast. Currently, all application-created transactions are of the type
* com.sleepycat.je.txn.Txn, and are replicated if the parent environment is replicated. Auto
* Txns are trickier because they may be created for a local write operation, such as log
* cleaning.
* @throws IllegalArgumentException via db/cursor read/write methods.
*/
public static Locker getWritableLocker(
Environment env,
Transaction userTxn,
boolean isInternalDb,
boolean dbIsTransactional,
boolean autoTxnIsReplicated,
TransactionConfig autoCommitConfig)
throws DatabaseException {
EnvironmentImpl envImpl = DbInternal.getEnvironmentImpl(env);
boolean envIsTransactional = envImpl.isTransactional();
if (userTxn == null) {
Transaction xaLocker = env.getThreadTransaction();
if (xaLocker != null) {
return DbInternal.getLocker(xaLocker);
}
}
if (dbIsTransactional && userTxn == null) {
if (autoCommitConfig == null) {
autoCommitConfig = DbInternal.getDefaultTxnConfig(env);
}
return Txn.createAutoTxn(
envImpl,
autoCommitConfig,
(autoTxnIsReplicated ? ReplicationContext.MASTER : ReplicationContext.NO_REPLICATE));
} else if (userTxn == null) {
/* Non-transactional user operations use ThreadLocker. */
return ThreadLocker.createThreadLocker(envImpl);
} else {
/*
* The user provided a transaction, the environment and the
* database had better be opened transactionally.
*/
if (!isInternalDb && !envIsTransactional) {
throw new IllegalArgumentException(
"A Transaction cannot be used because the"
+ " environment was opened non-transactionally");
}
if (!dbIsTransactional) {
throw new IllegalArgumentException(
"A Transaction cannot be used because the"
+ " database was opened non-transactionally");
}
/*
* Use the locker for the given transaction. For read-comitted,
* wrap the given transactional locker in a special locker for that
* isolation level.
*/
Locker locker = DbInternal.getLocker(userTxn);
if (locker.isReadCommittedIsolation()) {
return ReadCommittedLocker.createReadCommittedLocker(envImpl, locker);
}
return locker;
}
}
