- public class SelectorModule
- extends com.sun.xacml.finder.AttributeFinderModule
This module implements the basic behavior of the AttributeSelectorType,
looking for attribute values in the physical request document using the
given XPath expression. This is implemented as a separate module (instead
of being implemented directly in
AttributeSelector so that
programmers can remove this functionality if they want (it's optional in
the spec), so they can replace this code with more efficient, specific
code as needed, and so they can easily swap in different XPath libraries.
Note that if no matches are found, this module will return an empty bag
(unless some error occurred). The
AttributeSelector is still
deciding what to return to the policy based on the MustBePresent
This module uses the Xalan XPath implementation, and supports only version
1.0 of XPath. It is a fully functional, correct implementation of XACML's
AttributeSelector functionality, but is not designed for environments
that make significant use of XPath queries. Developers for any such
environment should consider implementing their own module.
|Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public boolean isSelectorSupported()
- Returns true since this module supports retrieving attributes based on
the data provided in an AttributeSelectorType.
private com.sun.xacml.cond.EvaluationResult createProcessingError(java.lang.String msg)
- Private helper to create a new processing error status result
public com.sun.xacml.cond.EvaluationResult findAttribute(java.lang.String path,
- Tries to find attribute values based on the given selector data.
The result, if successful, always contains a
even if only one value was found. If no values were found, but no other
error occurred, an empty bag is returned.