USP_GETCLASSASSIGNMENT_UPDATEFROMXML

/*
Generated by Blackbaud AppFx Platform
Date:  4/29/2010 7:25:31 PM
Assembly Version:  Blackbaud.AppFx.Platform.SqlClr, Version=2.6.1444.0, Culture=neutral, PublicKeyToken=null
Copyright Blackbaud
*/
CREATE PROCEDURE dbo.USP_GETCLASSASSIGNMENT_UPDATEFROMXML 
(
@ASSIGNMENTID uniqueidentifier,
@XML xml,
@CHANGEAGENTID uniqueidentifier = null,
@CHANGEDATE datetime = null
)

as

set nocount on;

if @CHANGEAGENTID is null
    exec USP_CHANGEAGENT_GETORCREATECHANGEAGENT @CHANGEAGENTID output

if @CHANGEDATE is null 
    set @CHANGEDATE = getdate()

-- build a temporary table containing the values from the XML

declare @TempTbl table (
   [CLASSID] uniqueidentifier,
   [ID] uniqueidentifier,
   [STUDENTDUEDATE] datetime)

insert into @TempTbl select 
    [CLASSID],
    [ID],
    [STUDENTDUEDATE] 
from dbo.UFN_GETCLASSASSIGNMENT_FROMITEMLISTXML(@XML)

update @TempTbl set ID = newid() where (ID is null) or (ID = '00000000-0000-0000-0000-000000000000');

if @@Error <> 0
    return 1;

declare @contextCache varbinary(128);
declare @e int;

-- cache current context information 

set @contextCache = CONTEXT_INFO();

-- set CONTEXT_INFO to @CHANGEAGENTID 

if not @CHANGEAGENTID is null
    set CONTEXT_INFO @CHANGEAGENTID;

-- delete any items that no longer exist in the XML table

delete from dbo.[CLASSASSIGNMENT] where [CLASSASSIGNMENT].ID in 
    (select ID from dbo.UFN_GETCLASSASSIGNMENT
    (
        @ASSIGNMENTID
    )
    EXCEPT select ID from @TempTbl)    

select @e=@@error;

-- reset CONTEXT_INFO to previous value 

if not @contextCache is null
    set CONTEXT_INFO @contextCache;

if @e <> 0
    return 2;

-- update the items that exist in the XML table and the db

update [CLASSASSIGNMENT]
        set [CLASSASSIGNMENT].[CLASSID]=temp.[CLASSID],
        [CLASSASSIGNMENT].[ID]=temp.[ID],
        [CLASSASSIGNMENT].[STUDENTDUEDATE]=temp.[STUDENTDUEDATE],
        [CLASSASSIGNMENT].CHANGEDBYID = @CHANGEAGENTID,
        [CLASSASSIGNMENT].DATECHANGED = @CHANGEDATE

    from dbo.[CLASSASSIGNMENT] inner join @TempTbl as [temp] on [CLASSASSIGNMENT].ID = [temp].ID
    where ([CLASSASSIGNMENT].[CLASSID]<>temp.[CLASSID]) or 
        ([CLASSASSIGNMENT].[CLASSID] is null and temp.[CLASSID] is not null) or 
        ([CLASSASSIGNMENT].[CLASSID] is not null and temp.[CLASSID] is null) or 
        ([CLASSASSIGNMENT].[ID]<>temp.[ID]) or 
        ([CLASSASSIGNMENT].[ID] is null and temp.[ID] is not null) or 
        ([CLASSASSIGNMENT].[ID] is not null and temp.[ID] is null) or 
        ([CLASSASSIGNMENT].[STUDENTDUEDATE]<>temp.[STUDENTDUEDATE]) or 
        ([CLASSASSIGNMENT].[STUDENTDUEDATE] is null and temp.[STUDENTDUEDATE] is not null) or 
        ([CLASSASSIGNMENT].[STUDENTDUEDATE] is not null and temp.[STUDENTDUEDATE] is null)

if @@Error <> 0
    return 3;    

-- insert new items

insert into [CLASSASSIGNMENT] 
    ([ASSIGNMENTID], 
    [CLASSID],
    [ID],
    [STUDENTDUEDATE],                
    ADDEDBYID, 
    CHANGEDBYID, 
    DATEADDED, 
    DATECHANGED)
select @ASSIGNMENTID, 
    [CLASSID],
    [ID],
    [STUDENTDUEDATE], 
    @CHANGEAGENTID, 
    @CHANGEAGENTID, 
    @CHANGEDATE, 
    @CHANGEDATE
from @TempTbl as [temp]
where not exists (select ID from dbo.[CLASSASSIGNMENT] as data where data.ID = [temp].ID)

if @@Error <> 0
    return 4;

return 0;