org.picocontainer.gems.constraints
Class IsKey

java.lang.Object
  org.picocontainer.parameters.AbstractParameter
      org.picocontainer.parameters.CollectionComponentParameter
          org.picocontainer.gems.constraints.AbstractConstraint
              org.picocontainer.gems.constraints.IsKey

All Implemented Interfaces:

Serializable, Constraint, Parameter

public final class IsKey
extends AbstractConstraint

Constraint that accepts an adapter of a specific key.

Author:

Nick Sieger

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.picocontainer.Parameter

Parameter.DelegateResolver, Parameter.NotResolved, Parameter.Resolver, Parameter.ValueResolver

Field Summary

Fields inherited from class org.picocontainer.parameters.CollectionComponentParameter

ARRAY, ARRAY_ALLOW_EMPTY

Fields inherited from interface org.picocontainer.Parameter

DEFAULT, ZERO

Constructor Summary

IsKey(Object key)
Creates a new IsKey instance.

Method Summary

boolean

evaluate(ComponentAdapter adapter) Evaluate whether the given component adapter matches this constraint.

Methods inherited from class org.picocontainer.gems.constraints.AbstractConstraint

getMatchingComponentAdapters, resolve, verify

Methods inherited from class org.picocontainer.parameters.CollectionComponentParameter

accept

Methods inherited from class org.picocontainer.parameters.AbstractParameter

isResolvable, resolveInstance

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.picocontainer.Parameter

accept, isResolvable, resolveInstance

Constructor Detail

IsKey

public IsKey(Object key)

Creates a new IsKey instance.

Parameters:

key - the key to match

Method Detail

evaluate

public boolean evaluate(ComponentAdapter adapter)

Description copied from interface: Constraint

Evaluate whether the given component adapter matches this constraint.

Specified by:

evaluate in interface Constraint

Specified by:

evaluate in class AbstractConstraint

Parameters:

adapter - a ComponentAdapter value

Returns:

true if the adapter matches the constraint