Specifies a cacheability constraint for the given url-pattern or servlet-name.
All constraint-field constraints must pass for a response to be cached. If there are value constraints, at least one of them must pass.
cache-mapping (sun-web.xml)
The following table describes subelements for the constraint-field element.
Table A–33 constraint-field Subelements
Element |
Required |
Description |
---|---|---|
zero or more |
Contains a value to be matched to the input parameter value. |
The following table describes attributes for the constraint-field element.
Table A–34 constraint-field Attributes
Attribute |
Default |
Description |
---|---|---|
name |
none |
Specifies the input parameter name. |
request.parameter |
(optional) Specifies the scope from which the input parameter is retrieved. Allowed values are context.attribute, request.header, request.parameter, request.cookie, request.attribute, and session.attribute. |
|
true |
(optional) If true, caches the response if matching succeeds. Overrides the same attribute in a constraint-field-value subelement. |
|
false |
(optional) If true, caches the response if matching fails. Overrides the same attribute in a constraint-field-value subelement. |