Changes between Version 7 and Version 8 of DataFormat


Ignore:
Timestamp:
04.09.2011 00:41:49 (9 years ago)
Author:
jri
Comment:

Details about Topic Types

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  • DataFormat

    v7 v8  
    199199 
    200200== Topic Type == 
     201 
     202A topic type has the same 5 properties as a [[#Topic|Topic]] plus 4 type-specific ones: 
     203 
     204||= Property =||= Description =||= Format =|| 
     205|| `id` ||||  ''See [[#Topic|Topic]]''  || 
     206|| `uri` || A globally unique identifier. Every topic type has an URI. || A string of format <domain>.<project>.<name> || 
     207|| `type_uri` || Fixed. || `"dm4.core.topic_type"` || 
     208|| `value` || The topic type's name. Readable by human. || An arbitrary string. Can contain spaces and special characters. || 
     209|| `composite` || Fixed. || {} || 
     210|| `data_type_uri` || The topic type's data type. That is the data type of one instance's payload.\\\\`dm4.core.composite` denotes a complex topic type which is composed of child types. The other 4 data types denote a simple topic type. || One of these 5 strings:\\\\`"dm4.core.text"`\\`"dm4.core.number"`\\`"dm4.core.boolean"`\\`"dm4.core.html"`\\`"dm4.core.composite"` || 
     211|| `index_mode_uris` || For simple topic types: Controls how the topic instance's payload is indexed. Default is no indexing.\\\\For complex topic types: not used. || An array with zero or more of these strings:\\\\`"dm4.core.off"`\\`"dm4.core.key"`\\`"dm4.core.fulltext"`\\`"dm4.core.fulltext_key"` || 
     212|| `assoc_defs` || For complex topic types: a list of child type definitions. Each definition references a child type and provides further declarations, e.g. cardinalities.\\\\For simple topic types: not used. || See [[#AssociationDefinition|Association Definition]] || 
     213|| `view_config_topics` || A client-specific presentation models. || See [[#ViewConfiguration|View Configuration]] || 
    201214 
    202215Example 1: a simple topic type