/**
* Get a locker for this database handle for a read or cursor operation.
*
* @throws IllegalArgumentException via db/cursor read/write methods.
*/
public static Locker getReadableLocker(
Environment env, Database dbHandle, Locker locker, boolean readCommittedIsolation)
throws DatabaseException {
DatabaseImpl dbImpl = DbInternal.getDatabaseImpl(dbHandle);
if (!dbImpl.isTransactional() && locker != null && locker.isTransactional()) {
throw new IllegalArgumentException(
"A Transaction cannot be used because the" + " database was opened non-transactionally");
}
/* Don't reuse a non-transactional locker. */
if (locker != null && !locker.isTransactional()) {
locker = null;
}
/*
* Request read-comitted if that isolation level is configured for the
* locker being reused, or if true is passed for the parameter (this is
* the case when read-committed is configured for the cursor).
*/
if (locker != null && locker.isReadCommittedIsolation()) {
readCommittedIsolation = true;
}
return getReadableLocker(env, locker, readCommittedIsolation);
}
public static Locker getReadableLocker__wrappee__base(
Environment env,
Database dbHandle,
Locker locker,
boolean retainNonTxnLocks,
boolean readCommittedIsolation)
throws DatabaseException {
DatabaseImpl dbImpl = DbInternal.dbGetDatabaseImpl(dbHandle);
if (!dbImpl.isTransactional() && locker != null && locker.isTransactional()) {
throw new DatabaseException(
"A Transaction cannot be used because the"
+ " database was opened"
+ " non-transactionally");
}
if (locker != null && !locker.isTransactional() && !retainNonTxnLocks) {
locker = null;
}
if (locker != null && locker.isReadCommittedIsolation()) {
readCommittedIsolation = true;
}
return getReadableLocker(env, locker, retainNonTxnLocks, readCommittedIsolation);
}