Hi,

> First, is there any "step-by-step" example out there, showing the
> correct sequence on attaching, querying, adn detaching.

statManager = new FBStatisticsManager();
statManager.setHost(DB_SERVER_URL);
statManager.setUser(DB_USER);
statManager.setPassword(DB_PASSWORD);
statManager.setDatabase(getDatabasePath());
statManager.setLogger(loggingStream);

statManager.getDatabaseStatistics(
StatisticsManager.SYSTEM_TABLE_STATISTICS);
String statistics = loggingStream.toString();

> Second, how do I implement the functionality of "-r" option of gstat?
> I mean, gstat's "-r" stands for "analyze average record and version
> length" (from gstat -h).
> In org.firebirdsql.management.FBStatisticsManager.java, the options
> are restricted to DATA_TABLE_STATISTICS and/or SYSTEM_TABLE_STATISTICS
> and/or INDEX_STATISTICS, and in org.firebirdsql.gds.ISCConstants.java
> doesn't exist the isc_spb_sts_record_versions constant (of value 0x20
> as stated in ibase.h, line 2367, from FireBird 1.5.2.4731).

Unfortunately there is currently no constant defined (please fill feature
request), but you can do the following:

statManager.getDatabaseStatistics(
StatisticsManager.SYSTEM_TABLE_STATISTICS | 0x20);

It should done the trick. And please fill feature request - we will add
separate constant in next release.

Roman