ConstantExpression
represents a constant expression.
In other words, {@link #evaluate} returns a value independent of the context.
@author James Strachan @version $Revision: 438373 $ConstantExpression
represents a constant expression.
In other words, {@link #evaluate} returns a value independent of the context.
@author James Strachan @version $Revision: 1.4 $However we do have a need for immutable literal expressions when defining our API for SLD, and any other standards based on Expression.
@author Jody Garnett, Refractions Research @source $URL$
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