Issue 10735: Selection should have a non-listener way of obtaining the members (data-distribution-rtf)
Source: PrismTech (Mr. Erik Hendriks, erik.hendriks(at)prismtech.com)
Nature: Revision
Severity: 
Summary: Problem:

The only way to find out which objects were inserted into/modified in/removed from a Selection is by attaching a SelectionListener to that Selection and by processing the callbacks on these events. However, there should also be a way to obtain this information without having to resort to Listeners.

Solution:

Add operations to the Selection that return a list of objects that are inserted into/modified in/removed from that Selection. 

Section 3.1.6.2, Figure 3-4: Add 3 operations to the Selection called "get_inserted_members", "get_modified_members" and get_removed_members".


Section 3.1.6.3.9: Add the following entry to the table:
Selection
operations
get_inserted_members		<undefined>[]
get_modified_members		<undefined>[]
get_removed_members		<undefined>[]

Section 3.1.6.3.9
Add:

·	get_inserted_members returns all objects that entered the Selection in the current update round.
·	get_modified_members returns all objects still belonging to the Selection whose content has changed in the current update round.
·	get_removed_members returns all objects that exited the Selection in the current update round.

Section 3.2.1.2.1: In the following lines of the Generic IDL of the Selection interface:
Replace:

/***
* Following method will be generated properly typed
* in the generated derived classes
*
SelectionListener set_listener (
in SelectionListener listener);
*
***/

With:

/***
* Following method will be generated properly typed
* in the generated derived classes
*
SelectionListener set_listener (in SelectionListener listener);
ObjectRootSeq get_inserted_members ( );
ObjectRootSeq get_modified_members ( );
ObjectRootSeq get_removed_members ( );
*
***/

Section 3.2.1.2.2: In the Implied IDL of the FooSelection interface add the following lines:

FooSeq get_inserted_members ( );
FooSeq get_modified_members ( );
FooSeq get_removed_members ( );


Resolution: 
Revised Text: 
Actions taken:
February 14, 2007: received issue
Discussion: 
Selection should have a non-listener way of obtaining the members that were inserted and removed.
End of Annotations:=====
iler: QUALCOMM Windows Eudora Version 7.0.1.0
Date: Wed, 14 Feb 2007 09:06:07 -0500
To: issues@omg.org, data-distribution-rtf@omg.org
From: Juergen Boldt <juergen@omg.org>
Subject: issue 10735 -- DDS RTF issue
X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at omg.org


This is issue # 10735   From: "Erik Hendriks" <Erik.Hendriks@prismtech.com>


Selection should have a non-listener way of obtaining the members
Selection should have a non-listener way of obtaining the members that were inserted and removed.

Problem:

The only way to find out which objects were inserted into/modified in/removed from a Selection is by attaching a SelectionListener to that Selection and by processing the callbacks on these events. However, there should also be a way to obtain this information without having to resort to Listeners.

Solution:

Add operations to the Selection that return a list of objects that are inserted into/modified in/removed from that Selection. 

Section 3.1.6.2, Figure 3-4: Add 3 operations to the Selection called "get_inserted_members", "get_modified_members" and get_removed_members".


Section 3.1.6.3.9: Add the following entry to the table:
Selection
operations
get_inserted_members              <undefined>[]
get_modified_members              <undefined>[]
get_removed_members               <undefined>[]

Section 3.1.6.3.9
Add:

·        get_inserted_members returns all objects that entered the Selection in the current update round.
·        get_modified_members returns all objects still belonging to the Selection whose content has changed in the current update round.
·        get_removed_members returns all objects that exited the Selection in the current update round.

Section 3.2.1.2.1: In the following lines of the Generic IDL of the Selection interface:
Replace:

/***
* Following method will be generated properly typed
* in the generated derived classes
*
SelectionListener set_listener (
in SelectionListener listener);
*
***/

With:

/***
* Following method will be generated properly typed
* in the generated derived classes
*
SelectionListener set_listener (in SelectionListener listener);
ObjectRootSeq get_inserted_members ( );
ObjectRootSeq get_modified_members ( );
ObjectRootSeq get_removed_members ( );
*
***/

Section 3.2.1.2.2: In the Implied IDL of the FooSelection interface add the following lines:

FooSeq get_inserted_members ( );
FooSeq get_modified_members ( );
FooSeq get_removed_members ( );



Juergen Boldt
Director, Member Services
Object Management Group
140 Kendrick St
Building A Suite 300
Needham, MA 02494
USA

tel: +1 781 444 0404 x 132
fax: +1 781 444 0320
email: juergen@omg.org
www.omg.org