--
-- acs-kernel/sql/acs-objects-create.sql
--
-- A base object type that provides auditing columns, permissioning,
-- attributes, and relationships to any subtypes.
--
-- @author Michael Yoon (michael@arsdigita.com)
-- @author Rafael Schloming (rhs@mit.edu)
-- @author Jon Salz (jsalz@mit.edu)
--
-- @creation-date 2000-05-18
--
-- @cvs-id $Id: acs-objects-create.sql,v 1.73 2024/09/11 06:15:47 gustafn Exp $
--
-----------------------------
-- PREDEFINED OBJECT TYPES --
-----------------------------
--
-- procedure inline_0/0
--
CREATE OR REPLACE FUNCTION inline_0(
) RETURNS integer AS $$
DECLARE
attr_id acs_attributes.attribute_id%TYPE;
BEGIN
--
-- The ultimate supertype: object
--
PERFORM acs_object_type__create_type (
'acs_object',
'Object',
'Objects',
null,
'acs_objects',
'object_id',
'acs_object',
'f',
null,
'acs_object.default_name'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'object_type',
'string',
'Object Type',
'Object Types',
null,
null,
null,
1,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'creation_date',
'date',
'Created Date',
null,
null,
null,
null,
1,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'creation_ip',
'string',
'Creation IP Address',
null,
null,
null,
null,
1,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'last_modified',
'date',
'Last Modified On',
null,
null,
null,
null,
1,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'modifying_ip',
'string',
'Modifying IP Address',
null,
null,
null,
null,
1,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'modifying_user',
'integer',
'Modifying User',
null,
null,
null,
null,
1,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'creation_user',
'integer',
'Creation user',
'Creation users',
null,
null,
null,
0,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'context_id',
'integer',
'Context ID',
'Context IDs',
null,
null,
null,
0,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'package_id',
'integer',
'Package ID',
'Package IDs',
null,
null,
null,
0,
1,
null,
'type_specific',
'f'
);
attr_id := acs_attribute__create_attribute (
'acs_object',
'title',
'string',
'Title',
'Titles',
null,
null,
null,
0,
1,
null,
'type_specific',
'f'
);
return 0;
END;
$$ LANGUAGE plpgsql;
select inline_0 ();
drop function inline_0 ();
-- show errors
-- ******************************************************************
-- * OPERATIONAL LEVEL
-- ******************************************************************
-------------
-- OBJECTS --
-------------
create sequence t_acs_object_id_seq;
create view acs_object_id_seq as
select nextval('t_acs_object_id_seq') as nextval;
create table acs_objects (
object_id integer not null
constraint acs_objects_object_id_pk primary key,
object_type varchar(1000) not null
constraint acs_objects_object_type_fk
references acs_object_types (object_type),
title varchar(1000) default null,
package_id integer default null,
context_id integer
CONSTRAINT acs_objects_context_id_fk
REFERENCES acs_objects(object_id) ON DELETE CASCADE,
security_inherit_p boolean default 't' not null,
creation_user integer,
creation_date timestamptz default current_timestamp not null,
creation_ip varchar(50),
last_modified timestamptz default current_timestamp not null,
modifying_user integer,
modifying_ip varchar(50),
constraint acs_objects_context_object_un
unique (context_id, object_id)
);
--
-- Avoid potential loops on context_ids. A context_id must be
-- different from the object_id. If no context_id should be checked, its
-- value must be NULL. Note that this constraint is not guaranteed to
-- avoid all loops; it is still possible to create indirect recursive
-- loops but excludes some real-world problems.
ALTER TABLE acs_objects ADD CONSTRAINT acs_objects_context_id_ck CHECK (context_id != object_id);
-- The unique constraint above will force create of this index...
-- create index acs_objects_context_object_idx onacs_objects (context_id, object_id);
create index acs_objects_creation_user_idx on acs_objects (creation_user);
create index acs_objects_creation_date_idx on acs_objects (creation_date);
create index acs_objects_modify_user_idx on acs_objects (modifying_user);
create index acs_objects_last_modified_idx on acs_objects (last_modified);
create index acs_objects_package_idx on acs_objects (package_id);
create index acs_objects_title_idx on acs_objects(title);
create index acs_objects_object_type_idx on acs_objects (object_type);
CREATE OR REPLACE FUNCTION acs_objects_mod_ip_insert_tr () RETURNS trigger AS $$
BEGIN
new.modifying_ip := new.creation_ip;
return new;
END;
$$ LANGUAGE plpgsql;
create trigger acs_objects_mod_ip_insert_tr before insert on acs_objects
for each row execute procedure acs_objects_mod_ip_insert_tr ();
-- show errors
CREATE OR REPLACE FUNCTION acs_objects_last_mod_update_tr () RETURNS trigger AS $$
BEGIN
if new.last_modified is null then
new.last_modified := old.last_modified;
elsif new.last_modified = old.last_modified then
new.last_modified := now();
end if;
return new;
END;
$$ LANGUAGE plpgsql;
create trigger acs_objects_last_mod_update_tr before update on acs_objects
for each row execute procedure acs_objects_last_mod_update_tr ();
-- show errors
comment on table acs_objects is '
The root table for the acs object hierarchy. It all starts here folks.
';
comment on column acs_objects.context_id is $$
The context_id column points to an object that provides a context for
this object. Often this will reflect an observed hierarchy in a site,
for example a bboard message would probably list a bboard topic as
its context, and a bboard topic might list a sub-site as its
context. Whenever we ask a question of the form "can user X perform
action Y on object Z", the acs security model will defer to an
object's context if there is no information about user X's
permission to perform action Y on object Z.
$$;
comment on column acs_objects.creation_user is '
Who created the object; may be null since objects can be created by
automated processes
';
comment on column acs_objects.modifying_user is '
Who last modified the object
';
comment on column acs_objects.package_id is '
Which package instance this object belongs to.
Please note that in mid-term this column will replace all
package_ids of package specific tables.
';
comment on column acs_objects.title is '
Title of the object if applicable.
Please note that in mid-term this column will replace all
titles or object_names of package specific tables.
';
----------------------
-- ATTRIBUTE VALUES --
----------------------
create sequence t_acs_attribute_value_id_seq;
create view acs_attribute_value_id_seq as
select nextval('t_acs_attribute_value_id_seq') as nextval;
create table acs_attribute_values (
object_id integer not null
constraint acs_attr_values_obj_id_fk
references acs_objects (object_id) on delete cascade,
attribute_id integer not null
constraint acs_attr_values_attr_id_fk
references acs_attributes (attribute_id),
attr_value text,
constraint acs_attribute_values_pk primary key
(object_id, attribute_id)
);
create index acs_attr_values_attr_id_idx on acs_attribute_values (attribute_id);
comment on table acs_attribute_values is '
Instead of coercing everything into a big string, we could use
a "union", i.e, a string column, a number column, a date column,
and a discriminator.
';
create table acs_static_attr_values (
object_type varchar(1000) not null
constraint acs_static_a_v_obj_id_fk
references acs_object_types (object_type) on delete cascade,
attribute_id integer not null
constraint acs_static_a_v_attr_id_fk
references acs_attributes (attribute_id),
attr_value text,
constraint acs_static_a_v_pk primary key
(object_type, attribute_id)
);
create index acs_stat_attrs_attr_id_idx on acs_static_attr_values (attribute_id);
comment on table acs_static_attr_values is '
Stores static values for the object attributes. One row per object
type.
';
------------------------
-- ACS_OBJECT PACKAGE --
------------------------
--
-- Create an SQL schema to allow the same dot notation as in
-- Oracle. The advantage of this notation is that the function can be
-- called identically for PostgreSQL and Oracle, so much duplicated
-- code can be removed.
--
--
-- TODO: handling of schema names in define_function_args, port all
-- acs_object api to the dot notation.
--
CREATE SCHEMA acs_object;
select define_function_args('acs_object__initialize_attributes','object_id');
--
-- procedure acs_object__initialize_attributes/1
--
CREATE OR REPLACE FUNCTION acs_object__initialize_attributes(
initialize_attributes__object_id integer
) RETURNS integer AS $$
DECLARE
v_object_type acs_objects.object_type%TYPE;
BEGIN
if initialize_attributes__object_id is null then
raise exception 'acs_object__initialize_attributes called with null object_id';
end if;
-- Initialize dynamic attributes
insert into acs_attribute_values
(object_id, attribute_id, attr_value)
select
initialize_attributes__object_id, a.attribute_id, a.default_value
from acs_attributes a, acs_objects o
where a.object_type = o.object_type
and o.object_id = initialize_attributes__object_id
and a.storage = 'generic'
and a.static_p = 'f';
-- Retrieve type for static attributes
select object_type into v_object_type from acs_objects
where object_id = initialize_attributes__object_id;
-- Initialize static attributes
-- begin
insert into acs_static_attr_values
(object_type, attribute_id, attr_value)
select
v_object_type, a.attribute_id, a.default_value
from acs_attributes a, acs_objects o
where a.object_type = o.object_type
and o.object_id = initialize_attributes__object_id
and a.storage = 'generic'
and a.static_p = 't'
and not exists (select 1 from acs_static_attr_values
where object_type = a.object_type);
-- exception when no_data_found then null;
return 0;
END;
$$ LANGUAGE plpgsql;
-- function new
-- old define_function_args('acs_object__new','object_id,object_type;acs_object,creation_date,creation_user,creation_ip,context_id,security_inherit_p;t,title,package_id')
-- new
select define_function_args('acs_object__new','object_id;null,object_type;acs_object,creation_date;now(),creation_user;null,creation_ip;null,context_id;null,security_inherit_p;t,title;null,package_id;null');
--
-- procedure acs_object__new/9
--
CREATE OR REPLACE FUNCTION acs_object__new(
new__object_id integer, -- default null
new__object_type varchar, -- default 'acs_object'
new__creation_date timestamptz, -- default now()
new__creation_user integer, -- default null
new__creation_ip varchar, -- default null
new__context_id integer, -- default null
new__security_inherit_p boolean, -- default 't'
new__title varchar, -- default null
new__package_id integer -- default null
) RETURNS integer AS $$
DECLARE
v_object_id acs_objects.object_id%TYPE;
v_creation_date timestamptz;
v_title acs_objects.title%TYPE;
v_object_type_pretty_name acs_object_types.pretty_name%TYPE;
BEGIN
if new__object_id is null then
select nextval('t_acs_object_id_seq') into v_object_id;
else
v_object_id := new__object_id;
end if;
if new__title is null then
select pretty_name
into v_object_type_pretty_name
from acs_object_types
where object_type = new__object_type;
v_title := v_object_type_pretty_name || ' ' || v_object_id;
else
v_title := new__title;
end if;
if new__creation_date is null then
v_creation_date:= now();
else
v_creation_date := new__creation_date;
end if;
insert into acs_objects
(object_id, object_type, title, package_id, context_id,
creation_date, creation_user, creation_ip, security_inherit_p)
values
(v_object_id, new__object_type, v_title, new__package_id, new__context_id,
v_creation_date, new__creation_user, new__creation_ip,
new__security_inherit_p);
PERFORM acs_object__initialize_attributes(v_object_id);
return v_object_id;
END;
$$ LANGUAGE plpgsql;
-- function new
--
-- procedure acs_object__new/6
--
CREATE OR REPLACE FUNCTION acs_object__new(
new__object_id integer, -- default null
new__object_type varchar, -- default 'acs_object'
new__creation_date timestamptz, -- default now()
new__creation_user integer, -- default null
new__creation_ip varchar, -- default null
new__context_id integer -- default null
) RETURNS integer AS $$
--
-- acs_object__new/6 maybe obsolete, when we define proper defaults for /9
--
DECLARE
v_object_id acs_objects.object_id%TYPE;
v_creation_date timestamptz;
BEGIN
return acs_object__new(new__object_id, new__object_type, new__creation_date,
new__creation_user, new__creation_ip, new__context_id,
't', null, null);
END;
$$ LANGUAGE plpgsql;
--
-- procedure acs_object__new/7
--
CREATE OR REPLACE FUNCTION acs_object__new(
new__object_id integer, -- default null
new__object_type varchar, -- default 'acs_object'
new__creation_date timestamptz, -- default now()
new__creation_user integer, -- default null
new__creation_ip varchar, -- default null
new__context_id integer, -- default null
new__security_inherit_p boolean -- default 't'
) RETURNS integer AS $$
--
-- acs_object__new/7 maybe obsolete, when we define proper defaults for /9
--
DECLARE
BEGIN
return acs_object__new(new__object_id, new__object_type, new__creation_date,
new__creation_user, new__creation_ip, new__context_id,
new__security_inherit_p, null, null);
END;
$$ LANGUAGE plpgsql;
--
-- procedure acs_object__new/8
--
CREATE OR REPLACE FUNCTION acs_object__new(
new__object_id integer, -- default null
new__object_type varchar, -- default 'acs_object'
new__creation_date timestamptz, -- default now()
new__creation_user integer, -- default null
new__creation_ip varchar, -- default null
new__context_id integer, -- default null
new__security_inherit_p boolean, -- default 't'
new__title varchar -- default null
) RETURNS integer AS $$
--
-- acs_object__new/8 maybe obsolete, when we define proper defaults for /9
--
DECLARE
BEGIN
return acs_object__new(new__object_id, new__object_type, new__creation_date,
new__creation_user, new__creation_ip, new__context_id,
new__security_inherit_p, new__title, null);
END;
$$ LANGUAGE plpgsql;
--
-- procedure acs_object__new/8
--
CREATE OR REPLACE FUNCTION acs_object__new(
new__object_id integer, -- default null
new__object_type varchar, -- default 'acs_object'
new__creation_date timestamptz, -- default now()
new__creation_user integer, -- default null
new__creation_ip varchar, -- default null
new__context_id integer, -- default null
new__title varchar, -- default null
new__package_id integer -- default null
) RETURNS integer AS $$
--
-- acs_object__new/8 maybe obsolete, when we define proper defaults for /9
--
DECLARE
BEGIN
return acs_object__new(new__object_id, new__object_type, new__creation_date,
new__creation_user, new__creation_ip, new__context_id,
't', new__title, new__package_id);
END;
$$ LANGUAGE plpgsql;
--
-- procedure acs_object__new/7
--
CREATE OR REPLACE FUNCTION acs_object__new(
new__object_id integer, -- default null
new__object_type varchar, -- default 'acs_object'
new__creation_date timestamptz, -- default now()
new__creation_user integer, -- default null
new__creation_ip varchar, -- default null
new__context_id integer, -- default null
new__title varchar -- default null
) RETURNS integer AS $$
--
-- acs_object__new/7 maybe obsolete, when we define proper defaults for /9
--
DECLARE
BEGIN
return acs_object__new(new__object_id, new__object_type, new__creation_date,
new__creation_user, new__creation_ip, new__context_id,
't', new__title, null);
END;
$$ LANGUAGE plpgsql;
--
-- procedure acs_object__new/2
--
CREATE OR REPLACE FUNCTION acs_object__new(
object_id integer, -- default null
object_type varchar -- default 'acs_object'
) RETURNS integer AS $$
--
-- acs_object__new/2 maybe obsolete, when we define proper defaults for /9
--
DECLARE
BEGIN
return acs_object__new(object_id,object_type,now(),null,null,null);
END;
$$ LANGUAGE plpgsql;
-- procedure delete
select define_function_args('acs_object__delete','object_id');
--
-- procedure acs_object__delete/1
--
CREATE OR REPLACE FUNCTION acs_object__delete(
delete__object_id integer
) RETURNS integer AS $$
DECLARE
obj_type record;
BEGIN
-- Also child relationships must be deleted. On delete cascade
-- would not help here, as only tuple in acs_rels would go, while
-- related acs_object would stay.
PERFORM acs_object__delete(object_id)
from acs_objects where object_id in
(select rel_id from acs_rels where
object_id_one = delete__object_id or
object_id_two = delete__object_id);
-- GN: the following deletion operation iterates over the id_columns
-- of the acs_object_types of the type tree for the object and
-- performs manual deletions in these tables by trying to delete the
-- delete__object_id from the id_column. This deletion includes as
-- well the deletion in acs_objects.
--
-- In the best of all possible worlds, this would not
-- be necessary, when the objects would have specified "on delete
-- cascade" for the id_columns.
for obj_type
in select ot2.table_name, ot2.id_column
from acs_object_types ot1, acs_object_types ot2
where ot1.object_type = (select object_type
from acs_objects o
where o.object_id = delete__object_id)
and ot1.tree_sortkey between ot2.tree_sortkey and tree_right(ot2.tree_sortkey)
order by ot2.tree_sortkey desc
loop
-- Delete from the table.
-- DRB: I removed the quote_ident calls that DanW originally included
-- because the table names appear to be stored in upper case. Quoting
-- causes them to not match the actual lower or potentially mixed-case
-- table names. We will just forbid squirrely names that include quotes.
-- daveB
-- ETP is creating a new object, but not a table, although it does specify a
-- table name, so we need to check if the table exists. Wp-slim does this too
if table_exists(obj_type.table_name) then
execute 'delete from ' || obj_type.table_name ||
' where ' || obj_type.id_column || ' = ' || delete__object_id;
end if;
end loop;
return 0;
END;
$$ LANGUAGE plpgsql;
--
-- procedure acs_object__name/1
--
CREATE OR REPLACE FUNCTION acs_object.name(
name__object_id integer
) RETURNS varchar AS $$
DECLARE
object_name varchar;
v_object_id integer;
obj_type record;
obj record;
BEGIN
-- Find the name function for this object, which is stored in the
-- name_method column of acs_object_types. Starting with this
-- object's actual type, traverse the type hierarchy upwards until
-- a non-null name_method value is found.
--
-- select name_method
-- from acs_object_types
-- start with object_type = (select object_type
-- from acs_objects o
-- where o.object_id = name__object_id)
-- connect by object_type = prior supertype
select title into object_name
from acs_objects
where object_id = name__object_id;
if (object_name is not null) then
return object_name;
end if;
for obj_type
in select ot2.name_method
from acs_object_types ot1, acs_object_types ot2
where ot1.object_type = (select object_type
from acs_objects o
where o.object_id = name__object_id)
and ot1.tree_sortkey between ot2.tree_sortkey and tree_right(ot2.tree_sortkey)
order by ot2.tree_sortkey desc
loop
if obj_type.name_method != '' and obj_type.name_method is NOT null then
-- Execute the first name_method we find (since we're traversing
-- up the type hierarchy from the object's exact type) using
-- Native Dynamic SQL, to ascertain the name of this object.
--
--execute 'select ' || object_type.name_method || '(:1) from dual'
for obj in execute 'select ' || obj_type.name_method || '(' || name__object_id || ')::varchar as object_name' loop
object_name := obj.object_name;
exit;
end loop;
exit;
end if;
end loop;
return object_name;
END;
$$ LANGUAGE plpgsql stable strict;
-- Backward compatibility definition for acs_object.name
select define_function_args('acs_object__name','object_id');
CREATE OR REPLACE FUNCTION acs_object__name(
name__object_id integer
) RETURNS varchar AS $$
BEGIN
RETURN acs_object.name(name__object_id);
END;
$$ LANGUAGE plpgsql stable strict;
-- function default_name
select define_function_args('acs_object__default_name','object_id');
--
-- procedure acs_object__default_name/1
--
CREATE OR REPLACE FUNCTION acs_object__default_name(
default_name__object_id integer
) RETURNS varchar AS $$
DECLARE
object_type_pretty_name acs_object_types.pretty_name%TYPE;
BEGIN
select ot.pretty_name
into object_type_pretty_name
from acs_objects o, acs_object_types ot
where o.object_id = default_name__object_id
and o.object_type = ot.object_type;
return object_type_pretty_name || ' ' || default_name__object_id;
END;
$$ LANGUAGE plpgsql stable strict;
-- function package_id
select define_function_args('acs_object__package_id','object_id');
--
-- procedure acs_object__package_id/1
--
CREATE OR REPLACE FUNCTION acs_object__package_id(
p_object_id integer
) RETURNS integer AS $$
DECLARE
v_package_id acs_objects.package_id%TYPE;
BEGIN
if p_object_id is null then
return null;
end if;
select package_id into v_package_id
from acs_objects
where object_id = p_object_id;
return v_package_id;
END;
$$ LANGUAGE plpgsql stable strict;
-- procedure get_attribute_storage
select define_function_args('acs_object__get_attribute_storage','object_id_in,attribute_name_in');
--
-- procedure acs_object__get_attribute_storage/2
--
CREATE OR REPLACE FUNCTION acs_object__get_attribute_storage(
object_id_in integer,
attribute_name_in varchar
) RETURNS text AS $$
DECLARE
-- these three are the out variables
v_column varchar;
v_table_name varchar;
v_key_sql text;
v_object_type acs_attributes.object_type%TYPE;
v_static acs_attributes.static_p%TYPE;
v_attr_id acs_attributes.attribute_id%TYPE;
v_storage acs_attributes.storage%TYPE;
v_attr_name acs_attributes.attribute_name%TYPE;
v_id_column varchar(200);
v_sql text;
v_return text;
v_rec record;
BEGIN
-- select
-- object_type, id_column
-- from
-- acs_object_types
-- connect by
-- object_type = prior supertype
-- start with
-- object_type = (select object_type from acs_objects
-- where object_id = object_id_in)
-- Determine the attribute parameters
select
a.attribute_id, a.static_p, a.storage, a.table_name, a.attribute_name,
a.object_type, a.column_name, t.id_column
into
v_attr_id, v_static, v_storage, v_table_name, v_attr_name,
v_object_type, v_column, v_id_column
from
acs_attributes a,
(select ot2.object_type, ot2.id_column
from acs_object_types ot1, acs_object_types ot2
where ot1.object_type = (select object_type
from acs_objects o
where o.object_id = object_id_in)
and ot1.tree_sortkey between ot2.tree_sortkey and tree_right(ot2.tree_sortkey)
) t
where
a.attribute_name = attribute_name_in
and
a.object_type = t.object_type;
if NOT FOUND then
raise EXCEPTION '-20000: No such attribute % for object % in acs_object.get_attribute_storage.', attribute_name_in, object_id_in;
end if;
-- This should really be done in a trigger on acs_attributes,
-- instead of generating it each time in this function
-- If there is no specific table name for this attribute,
-- figure it out based on the object type
if v_table_name is null or v_table_name = '' then
-- Determine the appropriate table name
if v_storage = 'generic' then
-- Generic attribute: table name/column are hardcoded
v_column := 'attr_value';
if v_static = 'f' then
v_table_name := 'acs_attribute_values';
v_key_sql := '(object_id = ' || object_id_in || ' and ' ||
'attribute_id = ' || v_attr_id || ')';
else
v_table_name := 'acs_static_attr_values';
v_key_sql := '(object_type = ''' || v_object_type || ''' and ' ||
'attribute_id = ' || v_attr_id || ')';
end if;
else
-- Specific attribute: table name/column need to be retrieved
if v_static = 'f' then
select
table_name, id_column
into
v_table_name, v_id_column
from
acs_object_types
where
object_type = v_object_type;
if NOT FOUND then
raise EXCEPTION '-20000: No data found for attribute %::% object_id % in acs_object.get_attribute_storage', v_object_type, attribute_name_in, object_id_in;
end if;
else
raise EXCEPTION '-20000: No table name specified for storage specific static attribute %::% object_id % in acs_object.get_attribute_storage.',v_object_type, attribute_name_in, object_id_in;
end if;
end if;
else
-- There is a custom table name for this attribute.
-- Get the id column out of the acs_object_tables
-- Raise an error if not found
select id_column into v_id_column from acs_object_type_tables
where object_type = v_object_type
and table_name = v_table_name;
if NOT FOUND then
raise EXCEPTION '-20000: No data found for attribute %::% object_id % in acs_object.get_attribute_storage', v_object_type, attribute_name_in, object_id_in;
end if;
end if;
if v_column is null or v_column = '' then
if v_storage = 'generic' then
v_column := 'attr_value';
else
v_column := v_attr_name;
end if;
end if;
if v_key_sql is null or v_key_sql = '' then
if v_static = 'f' then
v_key_sql := v_id_column || ' = ' || object_id_in ;
else
v_key_sql := v_id_column || ' = ''' || v_object_type || '''';
end if;
end if;
return v_column || ',' || v_table_name || ',' || v_key_sql;
END;
$$ LANGUAGE plpgsql stable;
select define_function_args('acs_object__get_attr_storage_column','v_vals');
--
-- procedure acs_object__get_attr_storage_column/1
--
CREATE OR REPLACE FUNCTION acs_object__get_attr_storage_column(
v_vals text
) RETURNS text AS $$
DECLARE
v_idx integer;
BEGIN
v_idx := strpos(v_vals,',');
if v_idx = 0 or v_vals is null then
raise exception 'invalid storage format: acs_object.get_attr_storage_column %',v_vals;
end if;
return substr(v_vals,1,v_idx - 1);
END;
$$ LANGUAGE plpgsql immutable;
select define_function_args('acs_object__get_attr_storage_table','v_vals');
--
-- procedure acs_object__get_attr_storage_table/1
--
CREATE OR REPLACE FUNCTION acs_object__get_attr_storage_table(
v_vals text
) RETURNS text AS $$
DECLARE
v_idx integer;
v_tmp varchar;
BEGIN
v_idx := strpos(v_vals,',');
if v_idx = 0 or v_vals is null then
raise exception 'invalid storage format: acs_object.get_attr_storage_table %',v_vals;
end if;
v_tmp := substr(v_vals,v_idx + 1);
v_idx := strpos(v_tmp,',');
if v_idx = 0 then
raise exception 'invalid storage format: acs_object.get_attr_storage_table %',v_vals;
end if;
return substr(v_tmp,1,v_idx - 1);
END;
$$ LANGUAGE plpgsql immutable;
select define_function_args('acs_object__get_attr_storage_sql','v_vals');
--
-- procedure acs_object__get_attr_storage_sql/1
--
CREATE OR REPLACE FUNCTION acs_object__get_attr_storage_sql(
v_vals text
) RETURNS text AS $$
DECLARE
v_idx integer;
v_tmp varchar;
BEGIN
v_idx := strpos(v_vals, ',');
if v_idx = 0 or v_vals is null then
raise exception 'invalid storage format: acs_object.get_attr_storage_sql %',v_vals;
end if;
v_tmp := substr(v_vals, v_idx + 1);
v_idx := strpos(v_tmp, ',');
if v_idx = 0 then
raise exception 'invalid storage format: acs_object.get_attr_storage_sql %',v_vals;
end if;
return substr(v_tmp, v_idx + 1);
END;
$$ LANGUAGE plpgsql immutable;
-- function get_attribute
select define_function_args('acs_object__get_attribute','object_id_in,attribute_name_in');
--
-- procedure acs_object__get_attribute/2
--
CREATE OR REPLACE FUNCTION acs_object__get_attribute(
object_id_in integer,
attribute_name_in varchar
) RETURNS text AS $$
DECLARE
v_table_name varchar(200);
v_column varchar(200);
v_key_sql text;
v_return text;
v_storage text;
v_rec record;
BEGIN
v_storage := acs_object__get_attribute_storage(object_id_in, attribute_name_in);
v_column := acs_object__get_attr_storage_column(v_storage);
v_table_name := acs_object__get_attr_storage_table(v_storage);
v_key_sql := acs_object__get_attr_storage_sql(v_storage);
for v_rec in execute 'select ' || quote_ident(v_column) || '::text as column_return from ' || quote_ident(v_table_name) || ' where ' || v_key_sql
LOOP
v_return := v_rec.column_return;
exit;
end loop;
if not FOUND then
return null;
end if;
return v_return;
END;
$$ LANGUAGE plpgsql stable;
-- procedure set_attribute
select define_function_args('acs_object__set_attribute','object_id_in,attribute_name_in,value_in');
--
-- procedure acs_object__set_attribute/3
--
CREATE OR REPLACE FUNCTION acs_object__set_attribute(
object_id_in integer,
attribute_name_in varchar,
value_in varchar
) RETURNS integer AS $$
DECLARE
v_table_name varchar;
v_column varchar;
v_key_sql text;
v_return text;
v_storage text;
BEGIN
v_storage := acs_object__get_attribute_storage(object_id_in, attribute_name_in);
v_column := acs_object__get_attr_storage_column(v_storage);
v_table_name := acs_object__get_attr_storage_table(v_storage);
v_key_sql := acs_object__get_attr_storage_sql(v_storage);
if value_in is null then
execute 'update ' || v_table_name || ' set ' || v_column || ' = NULL where ' || v_key_sql;
else
execute 'update ' || v_table_name || ' set ' || quote_ident(v_column) || ' = ' || quote_literal(value_in) || ' where ' || v_key_sql;
end if;
return 0;
END;
$$ LANGUAGE plpgsql;
-- function check_object_ancestors
-- added
select define_function_args('acs_object__check_object_ancestors','object_id,ancestor_id,n_generations');
--
-- procedure acs_object__check_object_ancestors/3
--
CREATE OR REPLACE FUNCTION acs_object__check_object_ancestors(
check_object_ancestors__object_id integer,
check_object_ancestors__ancestor_id integer,
check_object_ancestors__n_generations integer
) RETURNS boolean AS $$
DECLARE
check_object_ancestors__context_id acs_objects.context_id%TYPE;
check_object_ancestors__security_inherit_p acs_objects.security_inherit_p%TYPE;
n_rows integer;
n_gens integer;
result boolean;
BEGIN
-- OBJECT_ID is the object we are verifying
-- ANCESTOR_ID is the current ancestor we are tracking
-- N_GENERATIONS is how far ancestor_id is from object_id
-- Note that this function is only supposed to verify that the
-- index contains each ancestor for OBJECT_ID. It doesn't
-- guarantee that there aren''t extraneous rows or that
-- OBJECT_ID's children are contained in the index. That is
-- verified by separate functions.
result := 't';
-- Grab the context and security_inherit_p flag of the current
-- ancestor's parent.
select context_id, security_inherit_p
into check_object_ancestors__context_id,
check_object_ancestors__security_inherit_p
from acs_objects
where object_id = check_object_ancestors__ancestor_id;
if check_object_ancestors__ancestor_id = 0 then
if check_object_ancestors__context_id is null then
result := 't';
else
-- This can be a constraint, can't it?
PERFORM acs_log__error('acs_object.check_representation',
'Object 0 doesn''t have a null context_id');
result := 'f';
end if;
else
if check_object_ancestors__context_id is null or
check_object_ancestors__security_inherit_p = 'f'
THEN
check_object_ancestors__context_id := 0;
end if;
if acs_object__check_context_index(check_object_ancestors__object_id,
check_object_ancestors__ancestor_id,
check_object_ancestors__n_generations) = 'f' then
result := 'f';
end if;
if acs_object__check_object_ancestors(check_object_ancestors__object_id,
check_object_ancestors__context_id,
check_object_ancestors__n_generations + 1) = 'f' then
result := 'f';
end if;
end if;
return result;
END;
$$ LANGUAGE plpgsql;
-- function check_object_descendants
-- added
select define_function_args('acs_object__check_object_descendants','object_id,descendant_id,n_generations');
--
-- procedure acs_object__check_object_descendants/3
--
CREATE OR REPLACE FUNCTION acs_object__check_object_descendants(
object_id integer,
descendant_id integer,
n_generations integer
) RETURNS boolean AS $$
DECLARE
result boolean;
obj record;
BEGIN
-- OBJECT_ID is the object we are verifying.
-- DESCENDANT_ID is the current descendant we are tracking.
-- N_GENERATIONS is how far the current DESCENDANT_ID is from
-- OBJECT_ID.
-- This function will verify that each actually descendant of
-- OBJECT_ID has a row in the index table. It does not check that
-- there aren't extraneous rows or that the ancestors of OBJECT_ID
-- are maintained correctly.
result := 't';
-- First verify that OBJECT_ID and DESCENDANT_ID are actually in
-- the index.
if acs_object__check_context_index(descendant_id, object_id, n_generations) = 'f' then
result := 'f';
end if;
-- For every child that reports inheriting from OBJECT_ID we need to call
-- ourselves recursively.
for obj in select *
from acs_objects
where context_id = descendant_id
and security_inherit_p = 't' loop
if acs_object__check_object_descendants(object_id, obj.object_id,
n_generations + 1) = 'f' then
result := 'f';
end if;
end loop;
return result;
END;
$$ LANGUAGE plpgsql;
-- function check_path
select define_function_args('acs_object__check_path','object_id,ancestor_id');
--
-- procedure acs_object__check_path/2
--
CREATE OR REPLACE FUNCTION acs_object__check_path(
check_path__object_id integer,
check_path__ancestor_id integer
) RETURNS boolean AS $$
DECLARE
check_path__context_id acs_objects.context_id%TYPE;
check_path__security_inherit_p acs_objects.security_inherit_p%TYPE;
BEGIN
if check_path__object_id is null or check_path__ancestor_id then
raise exception 'acs_object__check_path called with null object_id or ancestor_id';
end if;
if check_path__object_id = check_path__ancestor_id then
return 't';
end if;
select context_id, security_inherit_p
into check_path__context_id, check_path__security_inherit_p
from acs_objects
where object_id = check_path__object_id;
-- we should be able to handle the case where check_path fails
-- should we not?
if check_path__object_id = 0 and check_path__context_id is null then
return 'f';
end if;
if check_path__context_id is null or check_path__security_inherit_p = 'f'
then
check_path__context_id := 0;
end if;
return acs_object__check_path(check_path__context_id,
check_path__ancestor_id);
END;
$$ LANGUAGE plpgsql stable;
--
-- procedure acs_object__update_last_modified/3
--
CREATE OR REPLACE FUNCTION acs_object__update_last_modified(
acs_object__update_last_modified__object_id integer,
acs_object__update_last_modified__modifying_user integer,
acs_object__update_last_modified__modifying_ip varchar
) RETURNS integer AS $$
DECLARE
BEGIN
return acs_object__update_last_modified(acs_object__update_last_modified__object_id, acs_object__update_last_modified__modifying_user, acs_object__update_last_modified__modifying_ip, now());
END;
$$ LANGUAGE plpgsql;
select define_function_args('acs_object__update_last_modified','object_id,modifying_user,modifying_ip,last_modified;now()');
--
-- procedure acs_object__update_last_modified/4
--
CREATE OR REPLACE FUNCTION acs_object__update_last_modified(
acs_object__update_last_modified__object_id integer,
acs_object__update_last_modified__modifying_user integer,
acs_object__update_last_modified__modifying_ip varchar,
acs_object__update_last_modified__last_modified timestamptz -- default now()
) RETURNS integer AS $$
DECLARE
v_parent_id integer;
v_last_modified timestamptz;
BEGIN
if acs_object__update_last_modified__last_modified is null then
v_last_modified := now();
else
v_last_modified := acs_object__update_last_modified__last_modified;
end if;
update acs_objects
set last_modified = v_last_modified,
modifying_user = acs_object__update_last_modified__modifying_user,
modifying_ip = acs_object__update_last_modified__modifying_ip
where object_id = acs_object__update_last_modified__object_id;
select context_id
into v_parent_id
from acs_objects
where object_id = acs_object__update_last_modified__object_id;
if v_parent_id is not null and v_parent_id != 0 then
perform acs_object__update_last_modified(v_parent_id, acs_object__update_last_modified__modifying_user, acs_object__update_last_modified__modifying_ip, v_last_modified);
end if;
return acs_object__update_last_modified__object_id;
END;
$$ LANGUAGE plpgsql;
-- show errors
-------------------
-- MISCELLANEOUS --
-------------------
create table general_objects (
object_id integer not null
constraint general_objects_object_id_fk
references acs_objects (object_id)
constraint general_objects_object_id_pk
primary key,
on_which_table varchar(30) not null,
on_what_id integer not null,
constraint general_objects_un
unique (on_which_table, on_what_id)
);
comment on table general_objects is '
This table can be used to treat non-acs_objects as acs_objects for
purposes of access control, categorization, etc.
';
OpenACS – The Toolkit for Online Communities : ACS API Browser : ACS Kernel 5.2.1d2 : acs-objects-create.sql
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