rem 
rem $Header: L:\\\\model\\repman40\\api\\RCS\\CIVWTAB.HPB 1.2 1998/12/30 15:02:49 loldham Exp $ 
rem 
Rem  Copyright (c) 1994 by Oracle Corporation 
Rem    NAME
Rem      civwtab.hpb - <one-line expansion of the name>
Rem    DESCRIPTION
Rem      <short description of component this file declares/defines>
Rem    RETURNS
Rem 
Rem    NOTES
Rem      <other useful comments, qualifications, etc.>
Rem    MODIFIED   (MM/DD/YY)
Rem     jwetherb   10/12/94 -  Add unique_complex_snp() function
Rem     jwetherb   09/29/94 -  Creation 
REM ***************************************************************************
REM   Hand-carved package body for RELATION SELECTION created on 29-SEP-94
REM ***************************************************************************
CREATE OR REPLACE PACKAGE BODY cihvwtab IS

  -- Generic post-process routines
  PROCEDURE check_delete(id number);

  str_type constant varchar2(6) := 'VWTAB';
  part_type constant varchar2(6) := 'TAB';
  use_type constant varchar2(6) := 'TAB';

--======================== PRE-PROCESS (INS,UPD) ============================--

PROCEDURE pre_process(operation varchar2,id number,
  pl in out NOCOPY ciorelation_selection.data)
IS
  cnt number;
BEGIN
  -- Perform INSERT-specific processing
  if operation = 'INS' then
    -- Check for existence of view and table
    -- elements
    if ciiutl.el_exists(pl.v.view_reference,part_type) = false then
      ciierr.fatal(3500,'RELATION SELECTION','view',
        pl.v.view_reference);
    end if;
    if ciiutl.el_exists(pl.v.table_reference,use_type) = false then
      ciierr.fatal(3500,'RELATION SELECTION','table',
        pl.v.table_reference);
    end if ;
  else
    if ciiutl.el_exists(id,str_type) = false then
      ciierr.fatal(3504,ciiutl.nls_type_name('RELATION_SELECTION'),id);
    end if;
  end if;

  -- Access rights for relation selection derive from the view
-- Access rights checking performed by triggers in config 4.0.9
--  ciiacc.check_access_rights(pl.v.view_reference,
--    part_type,'UPD','SHR');
--  if operation = 'INS' then
--    ciiacc.check_access_rights(pl.v.table_reference, use_type,'SEL','SHR');
--  end if;
 
  -- Validate user-defined properties
  if cieval.is_extended then
    cieval.check_association(id,pl.v.types,(operation='UPD')
      ,pl.v.view_reference
      ,pl.v.table_reference
      ,pl.v.user_defined_property_0,pl.i.user_defined_property_0
      ,pl.v.user_defined_property_1,pl.i.user_defined_property_1
      ,pl.v.user_defined_property_2,pl.i.user_defined_property_2
      ,pl.v.user_defined_property_3,pl.i.user_defined_property_3
      ,pl.v.user_defined_property_4,pl.i.user_defined_property_4
      ,pl.v.user_defined_property_5,pl.i.user_defined_property_5
      ,pl.v.user_defined_property_6,pl.i.user_defined_property_6
      ,pl.v.user_defined_property_7,pl.i.user_defined_property_7
      ,pl.v.user_defined_property_8,pl.i.user_defined_property_8
      ,pl.v.user_defined_property_9,pl.i.user_defined_property_9
      ,pl.v.user_defined_property_10,pl.i.user_defined_property_10
      ,pl.v.user_defined_property_11,pl.i.user_defined_property_11
      ,pl.v.user_defined_property_12,pl.i.user_defined_property_12
      ,pl.v.user_defined_property_13,pl.i.user_defined_property_13
      ,pl.v.user_defined_property_14,pl.i.user_defined_property_14
      ,pl.v.user_defined_property_15,pl.i.user_defined_property_15
      ,pl.v.user_defined_property_16,pl.i.user_defined_property_16
      ,pl.v.user_defined_property_17,pl.i.user_defined_property_17
      ,pl.v.user_defined_property_18,pl.i.user_defined_property_18
      ,pl.v.user_defined_property_19,pl.i.user_defined_property_19
      );
  end if;

  -- Check that relation selection with this view and
  -- table doesn't already exist on insert
  if operation = 'INS' or pl.i.sequence_number then
    if pl.i.sequence_number = false then
      pl.v.sequence_number := ciiexp.default_str_seq(pl.v.view_reference, 
                                       pl.v.table_reference, str_type, NULL, 'TABLE_REF');
      pl.i.sequence_number := true;
    end if;

    select count(id) 
      into cnt 
      from ci_relation_selections
     where sequence_number = pl.v.sequence_number
       and table_reference = pl.v.table_reference
       and view_reference = pl.v.view_reference;

    if cnt != 0 then
      ciierr.fatal(3501,'RELATION SELECTION',pl.v.id,
        ciiutl.identify(pl.v.view_reference, 'VW'),
        ciiutl.identify(pl.v.table_reference, 'TBL'));
    end if;
  end if;

  if operation = 'INS' then
    -- Initialize unassigned properties with default values on INSERT
    pl.v.element_type_name := str_type;
    pl.i.element_type_name := true;
  end if;
END;

--======================== PRE-PROCESS (DEL,SEL) ============================--

PROCEDURE pre_process(operation varchar2,id number)
IS
BEGIN
  -- Access rights for relation selection derive from the view
-- Access rights checking performed by triggers in config 4.0.9
--  if operation = 'DEL' then
--    ciiacc.check_access_rights(id,str_type,'UPD','MM');
--  else
--    ciiacc.check_access_rights(id,str_type,operation,'MM');
--  end if;

  -- if operation is 'DELETE', make sure no non-cascading references exist
  if operation = 'DEL' then
    check_delete(id);

--#BEGIN
    -- Set the BASE_COLUMN_REFERENCE to null for columns in the snapshot or
    -- view identified by VIEW_REFERENCE, where the base_column was in the
    -- table associated by TABLE_REFERENCE should be updated to null
    declare
      col ciocolumn.data;
      coli ciocolumn.rm_indicators;
    begin
      for view_column in (select vwcol.id
	                  from ci_columns vwcol,ci_columns tabcol,
	                    ci_relation_selections vwtab
                          where vwtab.id = pre_process.id
	                  and vwcol.table_reference = vwtab.view_reference
	                  and tabcol.table_reference = vwtab.table_reference
	                  and vwcol.base_column_reference = tabcol.id) loop
        col.i := coli;
        col.v.base_column_reference := null;
        col.i.base_column_reference := true;
        ciocolumn.upd(view_column.id,col);
      end loop; 
    end;
--#END
  end if;
END;

--===================== POST-PROCESS (INS,UPD,SEL) ==========================--

PROCEDURE post_process(operation varchar2,id number,
  pl ciorelation_selection.data)
IS
  dummy number;
BEGIN
  -- See also cisni.hpb
  if operation = 'INS' then
    select count(*)
      into dummy
      from ci_snapshot_implementations sni
          ,ci_snapshot_definitions snp
     where (sni.snapshot_definition_reference = pl.v.view_reference
       and sni.refresh_type = 'FAST')
        or (snp.id = pl.v.view_reference
       and snp.updatable_flag = 'Y');

    if dummy > 0 then
      -- snapshot is Simple

      select count(*)
        into dummy
        from ci_relation_selections vwtab
       where vwtab.view_reference = pl.v.view_reference
         and vwtab.id != pl.v.id;
      if dummy > 0 then
        -- %0!s: %0!s: Snapshot is Simple and %1!s is based on more than one Tab
        ciierr.fatal(1375, ciiutl.identify(id, pl.v.types),
                         ciiutl.identify(pl.v.view_reference, 'VW'));
      end if;

      select count(*)
        into dummy
        from ci_relation_definitions tab
       where tab.id = pl.v.table_reference
         and tab.table_type != 'TABLE';
      if dummy > 0 then
        -- %0!s: %0!s: Snapshot is Simple and %1!s is not based on a Table.
        ciierr.fatal(1376, ciiutl.identify(id, pl.v.types),
                         ciiutl.identify(pl.v.view_reference, 'VW'));
      end if;

    end if;
  end if;

END;

--========================= POST PROCESS (DEL) ==============================--

PROCEDURE post_process(operation varchar2,id number)
IS
BEGIN
  null;
END;

--============================= CHECK DELETE ================================--

PROCEDURE check_delete(id number)
IS
  dummy number;
  error_count number := 0;
BEGIN
  null;
END;

--#BEGIN
--============================= CHECK DELETE ================================--

FUNCTION unique_complex_snp(vw_ref number)
RETURN boolean
IS
  dummy number;
BEGIN
  select count(*) into dummy
    from ci_relation_selections vwtab,ci_snapshot_definitions snp
    where snp.id = vw_ref
    and vwtab.view_reference = vw_ref;
/* Line below removed from where clause for 2.0.1 as refresh_type 
    moved, but was it ver correct? COMPLEX is not a valid value!

    and snp.refresh_type = 'COMPLEX';
*/

  if dummy > 1 then
    return(false);
  else
    return(true);
  end if;
END;
--#END
--================================== END ====================================--
--
-- Package instantiation block
--
BEGIN
  is_installed := true;
END;
/