Index of /w/extensions/SemanticInternalObjects/

Semantic Internal Objects Extension Version 0.7.6 Yaron Koren This is free software licensed under the GNU General Public License. Please see http://www.gnu.org/copyleft/gpl.html for further details, including the full text and terms of the license. == Overview == Semantic Internal Objects is an extension to MediaWiki that defines a parser function, '#set_internal', that is used to define "internal objects" within the Semantic MediaWiki system. There are complex types of information sometimes known as 'n-ary relations' that involve more than one data value associated together. A simple example is in a cooking recipe; a recipe may call for 1 cup of flour, and the values "1", "cup" and "flour" must be encoded together; by themselves, the values are not meaningful (the third value has meaning, though not all of the meaning it could have). Such information can be stored already in SMW using multi-valued properties, though this approach is not flexible and currently leads to querying problems. Instead, #set_internal can be used to define "internal objects" within a page, which can then be queried as normal SMW pages would; a row of a recipe would be a good example of data that could be defined using #set_internal. The syntax of #set_internal is as follows: {{#set_internal:object_to_page_property |property1=value1 |property2=value2 ... }} A sample call to #set_internal would be: {{#set_internal:Has recipe |Has quantity=1 |Has unit=cup |Has ingredient=flour }} This call would be placed in a page for a recipe, and it would define an object that had an automatically-generated name; this name would start with "Carrot cake", but its exact name would depend on the version of Semantic MediaWiki being used. It should be noted that #set_internal does not display anything to the screen; display of the values has to be handled separately (this can be done easily if the function is called from a template). Internal objects, once stored, can be queried as if they were wiki pages. So the following query would show a table of all the recipes that contain more than 1/2 a cup of flour, and the number of cups they contain: {{#ask:[[Has recipe::+]][[Has ingredient::flour]][[Has unit::cup]][[Has quantity::>.5]] |mainlabel=- |? Has recipe |? Has quantity }} Note the "mainlabel=-" parameter in the query: that hides the names of the internal objects from users, since those names are meaningless. For more information, see the extension homepage at: http://www.mediawiki.org/wiki/Extension:Semantic_Internal_Objects == Requirements == This version of the Semantic Internal Objects extension requires MediaWiki 1.16 or higher and Semantic MediaWiki 1.5.3 or higher. == Installation == To install the extension, place the entire 'SemanticInternalObjects' directory within your MediaWiki 'extensions' directory, then add the following line to your 'LocalSettings.php' file: require_once( "$IP/extensions/SemanticInternalObjects/SemanticInternalObjects.php" ); == Contact == Most comments, questions, suggestions and bug reports should be sent to the Semantic MediaWiki mailing list: https://lists.sourceforge.net/lists/listinfo/semediawiki-user If possible, please add "[SIO]" at the beginning of the subject line, to clarify the subject matter.