| (Logical) Interface for substitution strategies.
(It happens to be implemented as a Java abstract class to allow
future additions to be made without breaking backwards compatibility.)
Usage: When
Digester.setSubstitutor is set, Digester
calls the methods in this interface to create substitute values which will
be passed into the Rule implementations.
Of course, it is perfectly acceptable for implementations not to make
substitutions and simply return the inputs.
Different strategies are supported for attributes and body text.
since:
1.6 | 