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Alzabo::Runtime::RowCursor - Cursor that returns C |
Alzabo::Runtime::RowCursor - Cursor that returns Alzabo::Runtime::Row objects
use Alzabo::Runtime::RowCursor;
my $cursor = $schema->table('foo')->all_rows;
while ( my $row = $cursor->next_row )
{
print $row->select('foo'), "\n";
}
Objects in this class are used to return Alzabo::Runtime::Row objects when requested. The cursor does not preload objects but rather creates them on demand, which is much more efficient. For more details on the rational please see the RATIONALE FOR CURSORS section in Alzabo::Runtime::Cursor.
Returns the next Alzabo::Runtime::Row
object or undef if no more are available. This behavior can mask
errors in your database's referential integrity. For more information
on how to deal with this see the HANDLING ERRORS section in Alzabo::Runtime::Cursor.
Returns all the rows available from the current point onwards. This
means that if there are five rows that will be returned when the
object is created and you call next_row twice, calling all_rows
after it will only return three. Calling the errors
method after this will return all errors trapped during the fetching
of these rows.
Resets the cursor so that the next next_row call will
return the first row of the set.
Dave Rolsky, <autarch@urth.org>
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Alzabo::Runtime::RowCursor - Cursor that returns C |