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Technology dependencies view

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* Added SQL view that lists dependencies of technologies as
comma-separated lists of identifiers
This commit is contained in:
Emmanuel BENOîT 2012-02-29 11:50:04 +01:00
parent f4e38e4943
commit e01eab9c09
3 changed files with 88 additions and 1 deletions
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23
legacyworlds-server-data/db-structure/parts/040-functions/026-technology-dependencies.sql
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@ -312,3 +312,26 @@ CREATE TRIGGER tg_techdeps_ai
REVOKE EXECUTE
ON FUNCTION defs.tgf_techdeps_ai( )
FROM PUBLIC;
/*
* Technology dependencies view
* -----------------------------
*
* This view generates a parseable list of dependencies per technology.
*
* Columns:
* technology_name_id The technology's name
* technology_dependencies A list of comma-separated technology name
* identifiers
*/
DROP VIEW IF EXISTS defs.technology_dependencies_view CASCADE;
CREATE VIEW defs.technology_dependencies_view
AS SELECT technology_name_id ,
array_to_string( array_agg( _name_str.name ) , ',' ) AS technology_dependencies
FROM defs.technologies _tech
LEFT OUTER JOIN defs.technology_dependencies
USING ( technology_name_id )
LEFT OUTER JOIN defs.strings _name_str
ON _name_str.id = technology_name_id_depends
GROUP BY technology_name_id;

49
legacyworlds-server-data/db-structure/tests/admin/040-functions/026-technology-dependencies/050-technology-dependencies-view.sql Normal file
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@ -0,0 +1,49 @@
/*
* Unit tests for defs.technology_dependencies_view
*/
BEGIN;
\i utils/strings.sql
-- Make the columns we don't use in the technology definition table NULL-able
ALTER TABLE defs.technologies
ALTER technology_category_id DROP NOT NULL ,
ALTER technology_discovery_id DROP NOT NULL ,
ALTER technology_description_id DROP NOT NULL ,
ALTER technology_price DROP NOT NULL ,
ALTER technology_points DROP NOT NULL;
-- Create strings to use as the technologies' names
SELECT _create_test_strings( 4 , 'tech' );
-- Insert the technologies
INSERT INTO defs.technologies ( technology_name_id )
VALUES ( _get_string( 'tech1' ) ) ,
( _get_string( 'tech2' ) ) ,
( _get_string( 'tech3' ) ) ,
( _get_string( 'tech4' ) );
-- Insert dependencies: tech3 -> {tech1,tech2} , tech4 -> {tech3}
INSERT INTO defs.technology_dependencies ( technology_name_id , technology_name_id_depends )
VALUES ( _get_string( 'tech3' ) , _get_string( 'tech1' ) ) ,
( _get_string( 'tech3' ) , _get_string( 'tech2' ) ) ,
( _get_string( 'tech4' ) , _get_string( 'tech3' ) );
-- ***** TESTS BEGIN HERE *****
SELECT plan( 3 );
SELECT diag_test_name( 'defs.technology_dependencies_view - Technologies with no dependencies' );
SELECT is( technology_dependencies , '' )
FROM defs.technology_dependencies_view
WHERE technology_name_id = _get_string( 'tech1' );
SELECT diag_test_name( 'defs.technology_dependencies_view - Technologies with a single dependency' );
SELECT is( technology_dependencies , 'tech3' )
FROM defs.technology_dependencies_view
WHERE technology_name_id = _get_string( 'tech4' );
SELECT diag_test_name( 'defs.technology_dependencies_view - Technologies with multiple dependencies' );
SELECT ok( technology_dependencies = 'tech1,tech2' OR technology_dependencies = 'tech2,tech1' )
FROM defs.technology_dependencies_view
WHERE technology_name_id = _get_string( 'tech3' );
SELECT * FROM finish( );
ROLLBACK;

15
legacyworlds-server-data/db-structure/tests/user/040-functions/026-technology-dependencies/060-technology-dependencies-view.sql Normal file
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@ -0,0 +1,15 @@
/*
* Test privileges on defs.technology_dependencies_view
*/
BEGIN;
\i utils/strings.sql
SELECT plan( 1 );
SELECT diag_test_name( 'defs.technology_dependencies_view - No SELECT privilege' );
SELECT throws_ok( $$
SELECT * FROM defs.technology_dependencies_view;
$$ , 42501 );
SELECT * FROM finish( );
ROLLBACK;