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Berkeley DB
book

Berkeley DB

by Sleepycat™ Software, Inc.
June 2001
Intermediate to advanced content levelIntermediate to advanced
688 pages
19h 18m
English
Sams
Content preview from Berkeley DB

Dbc.count

						import com.sleepycat.db.*;
						public int count(int flags)
						throws DbException;
					

Description

The Dbc.count method returns a count of the number of duplicate data items for the key referenced by the cursor. If the underlying database does not support duplicate data items, the call will still succeed and a count of 1 will be returned.

The flags parameter is currently unused, and must be set to 0.

If the cursor argument is not yet initialized, the Dbc.count method throws an exception that encapsulates EINVAL.

Otherwise, the Dbc.count method throws an exception that encapsulates a non-zero error value on failure.

Errors

The Dbc.count method may fail and throw an exception for errors specified for other Berkeley DB and C library or system ...

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Publisher Resources

ISBN: 0735710643Purchase book