csheets.core.formula.lang

Class RelationalOperatorImpl

java.lang.Object

csheets.core.formula.lang.RelationalOperator

csheets.core.formula.lang.RelationalOperatorImpl

All Implemented Interfaces:

BinaryOperator, Expression, Operator, Reference, Serializable, Comparable<Reference>

public class RelationalOperatorImpl
extends RelationalOperator
implements Reference

This class is a concrete RelationalOperatior to allow operations with :=

Author:

João Carreira

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RelationalOperatorImpl(Reference reference, RangeReference rangeReference, Reference reference0)

Method Summary

Methods

Modifier and Type	Method and Description
Object	accept(ExpressionVisitor visitor) Accepts to visit the given expression visitor.
<T> boolean	compare(Comparable<T> left, T right) Applies the operator to the given operands and returns a boolean value.
int	compareTo(Reference reference) Compares the reference with the given reference for order.
Value	evaluate() Evaluates the expression and returns the result.
SortedSet<Cell>	getCells() Returns the cell addresses (or address) that the reference points to.
String	getIdentifier() Returns the operator's string identirifer.

Methods inherited from class csheets.core.formula.lang.RelationalOperator

applyTo, getOperandValueType, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

RelationalOperatorImpl

public RelationalOperatorImpl(Reference reference,
                      RangeReference rangeReference,
                      Reference reference0)

Method Detail

compare

public <T> boolean compare(Comparable<T> left,
                  T right)

Description copied from class: RelationalOperator

Applies the operator to the given operands and returns a boolean value.

Specified by:

compare in class RelationalOperator

Parameters:

left - the value of the left operand

right - the value of the right operand

Returns:

the result of the comparison

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.

evaluate

public Value evaluate()

Description copied from interface: Expression

Evaluates the expression and returns the result.

Specified by:

evaluate in interface Expression

Specified by:

evaluate in interface Reference

Returns:

the result of the evaluation

getCells

public SortedSet<Cell> getCells()

Description copied from interface: Reference

Returns the cell addresses (or address) that the reference points to.

Specified by:

getCells in interface Reference

Returns:

a naturally ordered set of the references' addresses

compareTo

public int compareTo(Reference reference)

Description copied from interface: Reference

Compares the reference with the given reference for order.

Specified by:

compareTo in interface Reference

Specified by:

compareTo in interface Comparable<Reference>

Parameters:

reference - the reference to be compared

Returns:

a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

accept

public Object accept(ExpressionVisitor visitor)

Description copied from interface: Expression

Accepts to visit the given expression visitor.

Specified by:

accept in interface Expression

Parameters:

visitor - the visitor