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Implementation of RowCallbackHandler. Convenient superclass for callback handlers. An instance can only be used once.

We can either use this on its own (for example, in a test case, to ensure that our result sets have valid dimensions), or use it as a superclass for callback handlers that actually do something, and will benefit from the dimension information it provides.

A usage example with JdbcTemplate:

JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource); // reusable object RowCountCallbackHandler countCallback = new RowCountCallbackHandler(); // not reusable jdbcTemplate.query("select * from user", countCallback); int rowCount = countCallback.getRowCount();

Author
Rod Johnson

Since
May 3, 2001