protected Ice.Identity[] untypedFindFirst(byte[] k, int firstN) {
EvictorI.DeactivateController deactivateController = _store.evictor().deactivateController();
deactivateController.lock();
try {
com.sleepycat.db.DatabaseEntry key = new com.sleepycat.db.DatabaseEntry(k);
//
// When we have a custom-comparison function, Berkeley DB returns
// the key on-disk (when it finds one). We disable this behavior:
// (ref Oracle SR 5925672.992)
//
// In DB > 5.1.x we can not set DB_DBT_PARTIAL in the key Dbt when calling
// getSearchKey.
//
if (com.sleepycat.db.Environment.getVersionMajor() < 5
|| (com.sleepycat.db.Environment.getVersionMajor() == 5
&& com.sleepycat.db.Environment.getVersionMinor() <= 1)) {
key.setPartial(true);
}
com.sleepycat.db.DatabaseEntry pkey = new com.sleepycat.db.DatabaseEntry();
com.sleepycat.db.DatabaseEntry value = new com.sleepycat.db.DatabaseEntry();
//
// dlen is 0, so we should not retrieve any value
//
value.setPartial(true);
Ice.Communicator communicator = _store.communicator();
Ice.EncodingVersion encoding = _store.encoding();
TransactionI transaction = _store.evictor().beforeQuery();
com.sleepycat.db.Transaction tx = transaction == null ? null : transaction.dbTxn();
java.util.List<Ice.Identity> identities;
for (; ; ) {
com.sleepycat.db.SecondaryCursor dbc = null;
identities = new java.util.ArrayList<Ice.Identity>();
try {
//
// Move to the first record
//
dbc = _db.openSecondaryCursor(tx, null);
boolean first = true;
boolean found;
do {
com.sleepycat.db.OperationStatus status;
if (first) {
status = dbc.getSearchKey(key, pkey, value, null);
} else {
status = dbc.getNextDup(key, pkey, value, null);
}
found = status == com.sleepycat.db.OperationStatus.SUCCESS;
if (found) {
Ice.Identity ident = ObjectStore.unmarshalKey(pkey, communicator, encoding);
identities.add(ident);
first = false;
}
} while ((firstN <= 0 || identities.size() < firstN) && found);
break; // for(;;)
} catch (com.sleepycat.db.DeadlockException dx) {
if (_store.evictor().deadlockWarning()) {
communicator
.getLogger()
.warning(
"Deadlock in Freeze.Index.untypedFindFirst while "
+ "iterating over Db \""
+ _store.evictor().filename()
+ "/"
+ _dbName
+ "\"");
}
if (tx != null) {
throw new DeadlockException(
_store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), transaction, dx);
}
//
// Otherwise retry
//
} catch (com.sleepycat.db.DatabaseException dx) {
throw new DatabaseException(
_store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), dx);
} finally {
if (dbc != null) {
try {
dbc.close();
} catch (com.sleepycat.db.DeadlockException dx) {
if (tx != null) {
throw new DeadlockException(
_store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(),
transaction,
dx);
}
} catch (com.sleepycat.db.DatabaseException dx) {
//
// Ignored
//
}
}
}
}
if (identities.size() != 0) {
Ice.Identity[] result = new Ice.Identity[identities.size()];
return identities.toArray(result);
} else {
return new Ice.Identity[0];
}
} finally {
deactivateController.unlock();
}
}
protected int untypedCount(byte[] k) {
EvictorI.DeactivateController deactivateController = _store.evictor().deactivateController();
deactivateController.lock();
try {
com.sleepycat.db.DatabaseEntry key = new com.sleepycat.db.DatabaseEntry(k);
//
// When we have a custom-comparison function, Berkeley DB returns
// the key on-disk (when it finds one). We disable this behavior:
// (ref Oracle SR 5925672.992)
//
// In DB > 5.1.x we can not set DB_DBT_PARTIAL in the key Dbt when calling
// getSearchKey.
//
if (com.sleepycat.db.Environment.getVersionMajor() < 5
|| (com.sleepycat.db.Environment.getVersionMajor() == 5
&& com.sleepycat.db.Environment.getVersionMinor() <= 1)) {
key.setPartial(true);
}
com.sleepycat.db.DatabaseEntry value = new com.sleepycat.db.DatabaseEntry();
//
// dlen is 0, so we should not retrieve any value
//
value.setPartial(true);
TransactionI transaction = _store.evictor().beforeQuery();
com.sleepycat.db.Transaction tx = transaction == null ? null : transaction.dbTxn();
for (; ; ) {
com.sleepycat.db.Cursor dbc = null;
try {
dbc = _db.openCursor(tx, null);
if (dbc.getSearchKey(key, value, null) == com.sleepycat.db.OperationStatus.SUCCESS) {
return dbc.count();
} else {
return 0;
}
} catch (com.sleepycat.db.DeadlockException dx) {
if (_store.evictor().deadlockWarning()) {
_store
.communicator()
.getLogger()
.warning(
"Deadlock in Freeze.Index.untypedCount while "
+ "iterating over Db \""
+ _store.evictor().filename()
+ "/"
+ _dbName
+ "\"");
}
if (tx != null) {
throw new DeadlockException(
_store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), transaction, dx);
}
//
// Otherwise retry
//
} catch (com.sleepycat.db.DatabaseException dx) {
throw new DatabaseException(
_store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), dx);
} finally {
if (dbc != null) {
try {
dbc.close();
} catch (com.sleepycat.db.DeadlockException dx) {
if (tx != null) {
throw new DeadlockException(
_store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(),
transaction,
dx);
}
} catch (com.sleepycat.db.DatabaseException dx) {
//
// Ignored
//
}
}
}
}
} finally {
deactivateController.unlock();
}
}
