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public interface OperatorOverloader
By default the mathematical operators Operation support simple types like numbers. By providing an
implementation of OperatorOverloader, a user of the expression language can support these operations on other types.
| Method Summary | |
|---|---|
java.lang.Object |
operate(Operation operation,
java.lang.Object leftOperand,
java.lang.Object rightOperand)
Execute the specified operation on two operands, returning a result. |
boolean |
overridesOperation(Operation operation,
java.lang.Object leftOperand,
java.lang.Object rightOperand)
Return true if the operator overloader supports the specified operation between the two operands and so should be invoked to handle it. |
| Method Detail |
|---|
boolean overridesOperation(Operation operation,
java.lang.Object leftOperand,
java.lang.Object rightOperand)
throws EvaluationException
operation - the operation to be performedleftOperand - the left operandrightOperand - the right operand
EvaluationException - if there is a problem performing the operation
java.lang.Object operate(Operation operation,
java.lang.Object leftOperand,
java.lang.Object rightOperand)
throws EvaluationException
Operation for supported operations.
operation - the operation to be performedleftOperand - the left operandrightOperand - the right operand
EvaluationException - if there is a problem performing the operation
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