helma.org/wiki/Defining HopObject mappings programmatically

Version 4

simono — Thu, 02 Apr 2009 12:25:41 +0000

12	definePrototype("Page",
15
20
34
36	object: "Page", local: "parent_id", foreign: "id"
37	local: "parent_id",
38	foreign: "id"
38
46	cachemode: "aggressive"
48
50	collection: "Page", local: "id", foreign: "parent_id",
51	local: "id",
52	foreign: "parent_id",
52	order: "createtime"
54
56	collection: "Page", local: "id", foreign: "parent_id",
57	local: "id",
58	foreign: "parent_id",
58	order: "createtime"
60
62	collection: "Page", local: "id", foreign: "parent_id",
63	local: "id",
64	foreign: "parent_id",
64	order: "createtime"
66
68	collection: "Link", local: "id", foreign: "target_id",
69	local: "id",
70	foreign: "target_id",
74	loadmode: "aggressive"
76
78	collection: "Link", local: "id", foreign: "source_id",
79	local: "id",
80	foreign: "source_id",
84	loadmode: "aggressive"
86
88	object: "Type", local: "form_id", foreign: "id"
89	local: "form_id",
90	foreign: "id"
90
92	object: "Type", local: "childform_id", foreign: "id"
93	local: "childform_id",
94	foreign: "id"
94
96	object: "Page", local: "creator_id", foreign: "id"
97	local: "creator_id",
98	foreign: "id"
98
100	object: "Page", local: "modifier_id", foreign: "id"
101	local: "modifier_id",
102	foreign: "id"
115
117
125
127	object: "Page", local: "source_id", foreign: "id"
128	local: "source_id",
129	foreign: "id"
129
131	object: "Page", local: "target_id", foreign: "id"
132	local: "target_id",
133	foreign: "id"
134	}

Version 3

hannes — Thu, 02 Apr 2009 12:01:18 +0000

7	* Defining a new (previously not existing) prototype via definePrototype() from the code in another prototype directory (except Global) other than Global will likely throw an exception.

Version 2

hannes — Thu, 02 Apr 2009 11:59:09 +0000

7	* Defining a new (previously not existing) prototype via definePrototype() from the code in another prototype directory (except Global) will likely throw an exception.
8	* definePrototype() currently has very limited support for dependency tracking. If the type mapping refers to another prototype that hasn't been defined yet, that mapping will probably throw an exception or be borked. It is therefore advisable to define all prototypes in one place/file.

Version 1

hannes — Thu, 02 Apr 2009 11:55:47 +0000

Set tags to

1	Helma svn trunk has a new global function called definePrototype that allows to define Hopobject database mappings from JavaScript:
3	A few notes/caveats:
4
5	* You can call definePrototype() on existing prototypes, and you can update an existing prototype's mapping at runtime.
6	* Defining database mappings via properties files and JavaScript code is mutually exclusive. In other words, if you use definePrototype() on a prototype that also has one or more type.properties files, those properties files will be ignored. This is intentional.
7
8	A working mapping for Gobi looks like this:
9
10	definePrototype("Page", {
11	_db: "gobi",
12	_table: "page",
13
14	_id: "id",
15	_name: "name",
16	_parent: "parent, parent.version_history, parent.comment_pages, parent.embedded_pages",
17	_prototype: "prototype",
18
19	name: "name",
20	body: "body",
21	prototype: "prototype",
22	weight: "weight",
23	groupname: "groupname",
24	formdata: "formdata",
25	permissions: "permissions",
26	attachments: "attachments",
27	childtype: "childtype",
28	collection: "collection",
29	createtime: "createtime",
30	modifytime: "modifytime",
31	serialId: "serialId",
32
33	parent: {
34	object: "Page", local: "parent_id", foreign: "id"
35	},
36
37	_children: {
38	collection: "Page",
39	accessname: "name",
40	local: "id",
41	foreign: "parent_id",
42	filter: "collection = 'main'",
43	order: "weight, createtime",
44	cachemode: "aggressive"
45	},
46
47	version_history: {
48	collection: "Page", local: "id", foreign: "parent_id",
49	filter: "collection = 'history'",
50	order: "createtime"
51	},
52
53	comment_pages: {
54	collection: "Page", local: "id", foreign: "parent_id",
55	filter: "collection = 'comment'",
56	order: "createtime"
57	},
58
59	embedded_pages: {
60	collection: "Page", local: "id", foreign: "parent_id",
61	filter: "collection = 'embedded'",
62	order: "createtime"
63	},
64
65	links_in: {
66	collection: "Link", local: "id", foreign: "target_id",
67	group: "type",
68	"group.order": "id, createtime",
69	order: "id, createtime",
70	accessname: "sourceId",
71	cachemode: "aggressive",
72	loadmode: "aggressive"
73	},
74
75	links_out: {
76	collection: "Link", local: "id", foreign: "source_id",
77	group: "type",
78	"group.order": "id, createtime",
79	order: "id, createtime",
80	accessname: "targetId",
81	cachemode: "aggressive",
82	loadmode: "aggressive"
83	},
84
85	form: {
86	object: "Type", local: "form_id", foreign: "id"
87	},
88
89	childform: {
90	object: "Type", local: "childform_id", foreign: "id"
91	},
92
93	creator: {
94	object: "Page", local: "creator_id", foreign: "id"
95	},
96
97	modifier: {
98	object: "Page", local: "modifier_id", foreign: "id"
99	}
100	});
101
102	definePrototype("AdminPage", {
103	_extends: "Page"
104	});
105
106	definePrototype("Type", {
107	_extends: "AdminPage"
108	});
109
110	definePrototype("Link", {
111	_db: "gobi",
112	_table: "link",
113
114	_id: "id",
115
116	sourceId: "source_id",
117	targetId: "target_id",
118	createtime: "createtime",
119	modifytime: "modifytime",
120	type: "type",
121	info: "info",
122	serialId: "serial_id",
123
124	source: {
125	object: "Page", local: "source_id", foreign: "id"
126	},
127
128	target: {
129	object: "Page", local: "target_id", foreign: "id"
130	}
131	});