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org.eclipse.emf.query.conditions.eobjects
Class EObjectConditionDelegator
java.lang.Object
org.eclipse.emf.query.conditions.Condition
org.eclipse.emf.query.conditions.eobjects.EObjectCondition
org.eclipse.emf.query.conditions.eobjects.EObjectConditionDelegator
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public class EObjectConditionDelegator
- extends
EObjectCondition
A utility EObjectCondition class to act as a place holder for
another EObjectCondition condition object where all the calls
to it is simply forwarded to the wrapped EObjectCondition.
Helps if when clients need an EObjectCondition to hold onto at
a time when the actual EObjectCondition cannot be constructed
for some reason or another, this way, a
EObjectConditionDelegator can be returned while the delegated
to EObjectCondition could be constructed later when more info
is available. One other use is that when the client will hold on to an
EObjectCondition while the requirements dictate that the
EObjectCondition to use for evaluation could change over time,
if the supplier of the EObjectCondition has no way of
informing the clients of the change in the implementation of the
EObjectCondition, it can pass on this
EObjectConditionDelegator as wrapper for the
EObjectCondition to use at the time of the request, and later
on, the supplier can change the EObjectCondition to use at a
later time and all the clients out there will be getting the latest version
of the EObjectCondition to use for evaluation.
Please note that it is the responsibility of the supplier of this
EObjectConditionDelegator to ensure that it is properly
initialized with the real EObjectCondition before the
EObjectConditionDelegator is being used for evaluation by
clients since this EObjectConditionDelegator will simply
forward the evaluation call to the wrapped EObjectCondition.
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Method Summary
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boolean
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isSatisfied
(
EObject eObject)
The implementation of this function simply forwards the actual evaluation
to the wrapped EObjectCondition. |
boolean
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isSatisfied
(
Object object)
Overrides the parent's implementation by simply forwarding the actual
evaluation to the wrapped EObjectCondition. |
void
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setEObjectCondition
(
EObjectCondition eObjectCondition)
Sets the wrapped EObjectCondition used by this
EObjectConditionDelegator. |
boolean
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shouldPrune
(
EObject eObject)
The implementation of this function simply forwards the actual evaluation
to the wrapped EObjectCondition. |
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Methods inherited from class java.lang.
Object
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clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
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EObjectConditionDelegator
public EObjectConditionDelegator()
- A simple constructor, initializes the wrapped
EObjectCondition to null. The supplier of
this EObjectConditionDelegator must ensure that a valid
EObjectCondition is passed to this
EObjectConditionDelegator before any calls for evaluation
are made on it.
EObjectConditionDelegator
public EObjectConditionDelegator(
EObjectCondition eObjectCondition)
- A constructor that uses the argument
EObjectCondition as
its wrapped EObjectCondition.
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Parameters:
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eObjectCondition - the delegated-to EObjectCondition where all
calls made on this EObjectConditionDelegator
will be forwarded to.
isSatisfied
public boolean isSatisfied(
Object object)
- Overrides the parent's implementation by simply forwarding the actual
evaluation to the wrapped
EObjectCondition.
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Overrides:
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isSatisfied
in class
EObjectCondition
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Parameters:
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object - an Object to check if it satisfies this Condition
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Returns:
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true if the argument Object satisfies this
Condition,false otherwise. -
See Also:
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Condition.isSatisfied(java.lang.Object)
isSatisfied
public boolean isSatisfied(
EObject eObject)
- The implementation of this function simply forwards the actual evaluation
to the wrapped
EObjectCondition.
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Specified by:
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isSatisfied
in class
EObjectCondition
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Parameters:
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eObject - the EObject to check
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Returns:
- boolean
true if the argument eObject satisfies
this EObjectCondition
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See Also:
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EObjectCondition.isSatisfied(org.eclipse.emf.ecore.EObject)
shouldPrune
public boolean shouldPrune(
EObject eObject)
- The implementation of this function simply forwards the actual evaluation
to the wrapped
EObjectCondition.
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Overrides:
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shouldPrune
in class
EObjectCondition
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Parameters:
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eObject - the EObject to check to see whether to visit its children or not
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Returns:
- boolean
true if we should prune and false otherwise -
See Also:
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EObjectCondition.shouldPrune(org.eclipse.emf.ecore.EObject)
setEObjectCondition
public void setEObjectCondition(
EObjectCondition eObjectCondition)
- Sets the wrapped
EObjectCondition used by this
EObjectConditionDelegator. Could be completely different
than the original one passed when constructing.
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Parameters:
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eObjectCondition - the EObjectCondition to forward calls to by
this EObjectConditionDelegator
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