| 30 | | Current layer definition schema already defines an element "URL" of type string in "!VectorLayerDefinition" complex type to store URL information. However, this is too simple and we may need further details of the URL, such as description of URL which can be displayed to user. Also, we may assign an FDO expression to URL element which designates a layer level URL setting for features, but at the the same time, we may as well would like to override it for a specific feature. For example: the URL xml element has been assigned Fdo expression value |
| | 30 | Current layer definition schema(2.3.0) already defines an element "URL" of type string in "!VectorLayerDefinition" complex type to store URL information. However, this is quite simple and may far from enough for use in applications. We can enhance this in the following two aspects: |
| | 31 | 1. Description of the URL. The URL is just a universal resource locator in some certain formats, but we may want to display to user more readable text. For example, when user finds a building in a map, instead of showing user a URL directly so that he can jump to that link for more detailed information of the building, we can provide more descriptive text like "Visit http://xxx.xx for more details of the building" which is much more user firendly. |
| | 32 | 2. Also, we may assign an FDO expression to URL element which designates a layer level URL setting for features, but at the the same time, we may as well would like to override it for a specific feature. For example: the URL xml element has been assigned Fdo expression value |
