csheets.core.formula.lang
Class Concatenator

java.lang.Object
  csheets.core.formula.lang.Concatenator

All Implemented Interfaces:

BinaryOperator, Operator, Serializable

public class Concatenator
extends Object
implements BinaryOperator

A concatenator of strings.

Author:

Einar Pehrson

See Also:

Serialized Form

Constructor Summary

Concatenator()
Creates a new concatenator.

Method Summary

Value	applyTo(Expression leftOperand, Expression rightOperand) Applies the operator to the given operands and returns the result.
String	getIdentifier() Returns the operator's string identirifer.
Value.Type	getOperandValueType() Returns the type of value that the operator's operands can have.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Concatenator

public Concatenator()

Creates a new concatenator.

Method Detail

applyTo

public Value applyTo(Expression leftOperand,
                     Expression rightOperand)
              throws IllegalValueTypeException

Description copied from interface: BinaryOperator

Applies the operator to the given operands and returns the result.

Specified by:

applyTo in interface BinaryOperator

Returns:

the result of the operation

Throws:

IllegalValueTypeException - if the value of an operand is not of the expected type

getIdentifier

public String getIdentifier()

Description copied from interface: Operator

Returns the operator's string identirifer.

Specified by:

getIdentifier in interface Operator

Returns:

a string representation of the operator.

getOperandValueType

public Value.Type getOperandValueType()

Description copied from interface: Operator

Returns the type of value that the operator's operands can have.

Specified by:

getOperandValueType in interface Operator

Returns:

the type of value that the operator's operands can have

toString

public String toString()

Overrides:

toString in class Object