Jetspeed-2 capabilities provides a mechanism for mapping the client used to access Jetspeed-2 to media types for page rendering.
The Jetspeed-2 capability engine maps clients to media types to mime types. Here are some more detailed definitions:
User-Agent to determine the client that initiates a request.Jetspeed-2 works with the following media types:
| Name | Character Set | Description |
|---|---|---|
| html | UTF-8 | Rich HTML for HTML 4.0 compliants browsers |
| wml | UTF-8 | Format for mobile phones and PDAs compatible with WML 1.1 |
| vxml | UTF-8 | Format suitable for use with an audio VoiceXML server |
| xml | XML 1.0 | |
| xhtml-basic | UTF-8 | XHTML Basic used in WAP devices |
Jetspeed-2 is configured to recognize the following clients:
| Client | User Agent Pattern | Manufacturer | Preferred Mime Type |
|---|---|---|---|
| ie5 | .*MSIE 5.* | Microsoft | html |
| ie6 | .*MSIE 6.* | Microsoft | html |
| ns4 | .*Mozilla/4.* | Netscape | html |
| mozilla | .*Mozilla/5.* | Mozilla | html |
| lynx | Lynx.* | GNU | html |
| opera7 | .*Opera/7.* | Opera | html |
| ie5mac | .*MSIE 5.*Mac.* | Microsoft | html |
| safari | .*Mac.*Safari.* | Apple | html |
| xhtml-basic | DoCoMo/2.0.*|KDDI-.*UP\.Browser.*|J-PHONE/5.0.*|Vodafone/1.0/.* | N/A | xhtml |
| agentxml | agentxml/1.0.* | N/A | xml |
| nokia_generic | Nokia.* | Nokia | wml |
| up | UP.*|.*UP\.Browser.* | United Planet | wml |
| sonyericsson | Ercis.*|SonyE.* | SonyEricsson | wml |
| wapalizer | Wapalizer.* | Wapalizer | wml |
| klondike | Klondike.* | Klondike | wml |
| wml_generic | .*WML.*|.*WAP.*|.*Wap.*|.*wml.* | N/A | wml |
| vxml_generic | .*VoiceXML.* | N/A | vxml |
| nuance | Nuance.* | Nuance | vxml |
The media-type is used to locate the appropriate decorations template for the given media-type.
The Capabilities component derive a CapabilityMap from the information provided
by the User-Agent request header:
cm = capabilities.getCapabilityMap(agent);
This operation occurs at the very beginning of Jetspeed-2 request pipeline processing. Once the
CapabilityMap is retrieved, it is added to the Jetspeed-2 org.apache.jetspeed.request.RequestContext
and made available to the portal engine for processing the request.
The two pictures below describes the Capabilities interfaces and the relational database model
backing the implementation.
