USP_GETVOLUNTEERASSIGNMENTS_BYDAY_UPDATEFROMXML

CREATE PROCEDURE dbo.USP_GETVOLUNTEERASSIGNMENTS_BYDAY_UPDATEFROMXML 
(
    @VOLUNTEERID uniqueidentifier,
    @DAY date,
    @CURRENTAPPUSERID 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 (
   [ID] uniqueidentifier,
   [JOBOCCURRENCEID] uniqueidentifier,
   [DATE] date)

insert into @TempTbl select 
    [ID],
    [JOBOCCURRENCEID],
    @DAY
from dbo.UFN_GETVOLUNTEERASSIGNMENTS_BYDAY_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.[VOLUNTEERASSIGNMENT] where [VOLUNTEERASSIGNMENT].ID in 
    (select ID from dbo.UFN_GETVOLUNTEERASSIGNMENTS_BYDAY
    (
        @VOLUNTEERID,
        @DAY,
        @CURRENTAPPUSERID
    )
    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 [VOLUNTEERASSIGNMENT]
        set [VOLUNTEERASSIGNMENT].[DATE]=temp.[DATE],
        [VOLUNTEERASSIGNMENT].[ID]=temp.[ID],
        [VOLUNTEERASSIGNMENT].[JOBOCCURRENCEID]=temp.[JOBOCCURRENCEID],
        [VOLUNTEERASSIGNMENT].CHANGEDBYID = @CHANGEAGENTID,
        [VOLUNTEERASSIGNMENT].DATECHANGED = @CHANGEDATE

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

if @@Error <> 0
    return 3;    

-- insert new items

insert into [VOLUNTEERASSIGNMENT] 
    ([VOLUNTEERID], 
    [DATE],
    [ID],
    [JOBOCCURRENCEID],                
    ADDEDBYID, 
    CHANGEDBYID, 
    DATEADDED, 
    DATECHANGED)
select @VOLUNTEERID, 
    [DATE],
    [ID],
    [JOBOCCURRENCEID], 
    @CHANGEAGENTID, 
    @CHANGEAGENTID, 
    @CHANGEDATE, 
    @CHANGEDATE
from @TempTbl as [temp]
where not exists (select ID from dbo.[VOLUNTEERASSIGNMENT] as data where data.ID = [temp].ID)

if @@Error <> 0
    return 4;

return 0;