org.apache.xerces.validators.schema.identity
Interface FieldActivator

All Known Implementing Classes:
XMLValidator

public interface FieldActivator

Interface for a field activator. The field activator is responsible for activating fields within a specific scope; the caller merely requests the fields to be activated.

Version:
$Id: FieldActivator.java 317245 2001-06-14 22:23:43Z neilg $
Author:
Andy Clark, IBM

Method Summary
 XPathMatcher activateField(Field field)
          Request to activate the specified field.
 void endValueScopeFor(IdentityConstraint identityConstraint)
          Ends the value scope for the specified identity constraint.
 void startValueScopeFor(IdentityConstraint identityConstraint)
          Start the value scope for the specified identity constraint.
 

Method Detail

startValueScopeFor

public void startValueScopeFor(IdentityConstraint identityConstraint)
                        throws java.lang.Exception
Start the value scope for the specified identity constraint. This method is called when the selector matches in order to initialize the value store.
Parameters:
identityConstraint - The identity constraint.

activateField

public XPathMatcher activateField(Field field)
                           throws java.lang.Exception
Request to activate the specified field. This method returns the matcher for the field. It's also important for the implementor to ensure that the Field realizes that it is permitted to match a value--that is, to call the field's setMayMatch(boolean) method.
Parameters:
field - The field to activate.

endValueScopeFor

public void endValueScopeFor(IdentityConstraint identityConstraint)
                      throws java.lang.Exception
Ends the value scope for the specified identity constraint.
Parameters:
identityConstraint - The identity constraint.


Copyright 1999-2001 Apache XML Project. All Rights Reserved.