org.apache.xerces.impl.xs.identity
Interface FieldActivator
- XMLSchemaValidator
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.
$Id: FieldActivator.java 320098 2004-10-06 15:14:55Z mrglavas $
activateField
public XPathMatcher activateField(Field field,
int initialDepth)
Request to activate the specified field. This method returns the
matcher for the field.
It's also important for the implementor to ensure that it marks whether a Field
is permitted to match a value--that is, to call the setMayMatch(Field, Boolean) method.
field
- The field to activate.initialDepth
- the 0-indexed depth in the instance document at which the Selector began to match.
endValueScopeFor
public void endValueScopeFor(IdentityConstraint identityConstraint,
int initialDepth)
Ends the value scope for the specified identity constraint.
identityConstraint
- The identity constraint.initialDepth
- the 0-indexed depth where the Selector began to match.
mayMatch
public Boolean mayMatch(Field field)
Returns whether the given field is permitted to match a value.
field
- The field that may be permitted to be matched.
- Boolean indicating whether the field may be matched.
setMayMatch
public void setMayMatch(Field field,
Boolean state)
Sets whether the given field is permitted to match a value.
This should be used to catch instance documents that try
and match a field several times in the same scope.
field
- The field that may be permitted to be matched.state
- Boolean indiciating whether the field may be matched.
startValueScopeFor
public void startValueScopeFor(IdentityConstraint identityConstraint,
int initialDepth)
Start the value scope for the specified identity constraint. This
method is called when the selector matches in order to initialize
the value store.
identityConstraint
- The identity constraint.initialDepth
- the depth at which the selector began matching
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