org.objectweb.medor.filter.lib
Class IsEmpty
BasicUnaryOperator
org.objectweb.medor.filter.lib.IsEmpty
- UnaryOperator
public class IsEmpty
extends BasicUnaryOperator
implements UnaryOperator
IsEmpty operates on an Expression which must be of a TupleCollection type,
or a GenClassRef. Its evaluation returns true if the Expression is an empty
TupleCollection or if the GenClassRef has no element.
IsEmpty
public IsEmpty(Expression e)
compileExpression
public Operand compileExpression()
throws ExpressionException,
MalformedExpressionException
evaluate
public boolean evaluate(Object op)
evaluate
public Operand evaluate(ParameterOperand[] pos,
Object o)
throws ExpressionException
getOperatorString
public String getOperatorString()