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| − | | + | #REDIRECT [[Editing topics and associations]] |
| − | Occurrence is a solid text block associated to the topic. Occurrence has '''type''' and '''scope'''. Type is a topic that describes the occurrence. '''Topic's description''' is an example of occurrence type. Scope is also a topic describing the occurrence. Usually scope specifies the language of the occurrence. Type and scope are orthogonal. Topic map standard supports URL occurrences addition to text occurrences. However, Wandora does '''not''' support URL occurrences as it is possible to set URL's external representation, the string representing URL, as the occurrence.
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| − | [[Image:textdata_editor.gif|center|Adding occurrence to a topic with predefined schema.]] | + | |
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| − | Occurrence is added to a topic by selecting '''Add occurrence...'''. Occurrences employ schema similar to association schema. Occurrence schema specifies what kind of occurrences can be added to a topic i.e. the types of allowed occurrences. Read more about the schema [[Schema|here]]. As schema creation is rather difficult also schemaless occurrence addition is allowed.
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| − | Occurrence editor doesn't allow user to specify occurrence scope freely. User must always choose scope from Wandora's language topics. This is usually enough as scopes should not vary too much. To add occurrence of non-listed scope, add your scope topic as an instance to '''Wandora language'''. Read more [[How to add another variant name language|here]].
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| − | More advanced occurrence operations are found in '''Topics > occurrence''' menu of topic tables:
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| − | * '''Delete occurrences with type''' removes occurrences of given type from context topics.
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| − | * '''Delete all occurrences''' removes all occurrences from context topics.
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| − | * '''Regex replace''' modifies occurrence text with given regular expression. This can be used to preform rather complicated search and replace operations for example.
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| − | Note: For historical reasons Wandora calls occurrences also as '''Text datas'''.
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| − | [[Image:edit_text_data.gif|center|Editing occurrence after initial addition.]]
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Latest revision as of 17:09, 22 May 2013
- REDIRECT Editing topics and associations
