public synchronized void truncateClass(Transaction txn, Class entityClass)
throws DatabaseException {
checkOpen();
/* Close primary and secondary databases. */
closeClass(entityClass);
String clsName = entityClass.getName();
EntityMetadata entityMeta = checkEntityClass(clsName);
/*
* Truncate the primary first and let any exceptions propogate
* upwards. Then truncate each secondary, only throwing the first
* exception.
*/
String dbName = storePrefix + clsName;
boolean primaryExists = true;
try {
env.truncateDatabase(txn, dbName, false);
} catch (DatabaseNotFoundException ignored) {
primaryExists = false;
}
if (primaryExists) {
DatabaseException firstException = null;
for (SecondaryKeyMetadata keyMeta : entityMeta.getSecondaryKeys().values()) {
try {
env.truncateDatabase(
txn, storePrefix + makeSecName(clsName, keyMeta.getKeyName()), false);
} catch (DatabaseNotFoundException ignored) {
/* Ignore secondaries that do not exist. */
} catch (DatabaseException e) {
if (firstException == null) {
firstException = e;
}
}
}
if (firstException != null) {
throw firstException;
}
}
}
@Test
public void testCleanAfterDbTruncate() {
open(true /*runCleaner*/);
writeFiles(5 /*nActive*/, 0 /*nObsolete*/);
expectNothingToClean();
db.close();
db = null;
env.truncateDatabase(null, DB_NAME, false);
expectBackgroundCleaning();
close();
}
