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java.lang.Objectorg.jicengine.operation.FieldValueOperation
Constructor Summary | |
FieldValueOperation(java.lang.String signature,
Operation actor,
java.lang.String field)
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Method Summary | |
java.lang.Object |
execute(Context context)
executes the operation in a given context. objects in the context might be used in evaluation, or operation could produce more objects into the context. |
boolean |
needsParameter(java.lang.String name)
So clients may query if this operation needs a particular parameter. a return value 'true' means that in order to execute this parameter, a parameter with the given name must exist in the context. |
boolean |
needsParameters()
So clients may query whether this operation needs any parameters at all. |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public FieldValueOperation(java.lang.String signature, Operation actor, java.lang.String field)
Method Detail |
public boolean needsParameters()
Operation
needsParameters
in interface Operation
public boolean needsParameter(java.lang.String name)
Operation
So clients may query if this operation needs a particular parameter. a return value 'true' means that in order to execute this parameter, a parameter with the given name must exist in the context.
if the parmeter in question is an optional parameter, a true must be returned.
needsParameter
in interface Operation
public java.lang.Object execute(Context context) throws OperationException
Operation
executes the operation in a given context. objects in the context might be used in evaluation, or operation could produce more objects into the context.
NOTE: operations must be re-executable.
execute
in interface Operation
OperationException
public java.lang.String toString()
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