private void processDatabases(
Element root, DefaultDataSet dataset, BdbEnvironment envFormat, List<Database> dbs)
throws Exception {
for (Database db : dbs) {
String dbName = db.getDatabaseName();
BdbDatabase dbFormat = envFormat.getDatabase(dbName);
String peerName = envFormat.getPeerName();
String tagName = (peerName == null) ? dbName : envFormat.getPeerName() + "." + dbName;
DefaultTable table = new DefaultTable(tagName);
dataset.addTable(table);
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
if (dbFormat != null) {
Cursor c = db.openCursor(null, null);
int rows = 0;
try {
while (c.getNext(key, data, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
rows++;
byteBufferRead(root, tagName, key, data, dbFormat, schemaIDBinding);
}
if (rows == 0) {
root.addElement(tagName);
}
} finally {
c.close();
}
}
}
}
/** {@inheritDoc} */
public void abort() {
try {
txn.abort();
} catch (DatabaseException e) {
throw BdbEnvironment.convertException(e, false);
}
}
/** {@inheritDoc} */
public void prepare(byte[] gid) {
try {
txn.prepare(gid);
} catch (DatabaseException e) {
throw BdbEnvironment.convertException(e, false);
}
}
/**
* Creates an instance of this class.
*
* @param env the Berkeley DB environment
* @param timeout the number of milliseconds the transaction should be allowed to run
* @throws IllegalArgumentException if timeout is less than {@code 1}
* @throws DbDatabaseException if an unexpected database problem occurs
*/
BdbTransaction(Environment env, long timeout) {
if (timeout <= 0) {
throw new IllegalArgumentException("Timeout must be greater than 0");
}
try {
txn = env.beginTransaction(null, null);
/* Avoid overflow -- BDB treats 0 as unlimited */
long timeoutMicros = (timeout < (Long.MAX_VALUE / 1000)) ? 1000 * timeout : 0;
txn.setTxnTimeout(timeoutMicros);
} catch (DatabaseException e) {
throw BdbEnvironment.convertException(e, false);
}
}
