NAME
Jifty::DBI::Collection::Union - Deal with multiple Jifty::DBI::Collection result sets as one
SYNOPSIS
use Jifty::DBI::Collection::Union;
my $U = new Jifty::DBI::Collection::Union;
$U->add( $tickets1 );
$U->add( $tickets2 );
$U->GotoFirstItem;
while (my $z = $U->Next) {
printf "%5d %30.30s\n", $z->Id, $z->Subject;
}WARNING
This module is still experimental.
DESCRIPTION
Implements a subset of the Jifty::DBI::Collection methods, but enough to do iteration over a bunch of results. Useful for displaying the results of two unrelated searches (for the same kind of objects) in a single list.
METHODS
new
Create a new Jifty::DBI::Collection::Union object. No arguments.
add COLLECTION
Add Jifty::DBI::Collection object COLLECTION to the Union object.
It must be the same type as the first object added.
first
Return the very first element of the Union (which is the first element of the first Collection). Also reset the current pointer to that element.
next
Return the next element in the Union.
last
Returns the last item
count
Returns the total number of elements in the Union'ed Collection
goto_first_item
Starts the recordset counter over from the first item. the next time you call "next", you'll get the first item returned by the database, as if you'd just started iterating through the result set.
goto_item
Unlike "goto_item" in Jifty::DBI::Collection, Union only supports going to the first item in the collection.
is_last
Returns true if the current row is the last record in the set.
items_array_ref
Return a reference to an array containing all objects found by this search.
Will destroy any positional state.
AUTHOR
Copyright (c) 2004 Robert Spier
All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.