uk.ac.ed.epcc.safe.accounting.expr

Class BinaryPropExpression

java.lang.Object

uk.ac.ed.epcc.safe.accounting.expr.BinaryPropExpression

All Implemented Interfaces:

PropExpression<java.lang.Number>, uk.ac.ed.epcc.webapp.Targetted<java.lang.Number>

Direct Known Subclasses:

NegatePropExpression

public class BinaryPropExpression
extends java.lang.Object
implements PropExpression<java.lang.Number>

Binary numerical operation on PropExpressions

Author:

spb

Field Summary

Fields

Modifier and Type	Field and Description
PropExpression<? extends java.lang.Number>	a
PropExpression<? extends java.lang.Number>	b
uk.ac.ed.epcc.webapp.jdbc.expr.Operator	op

Constructor Summary

Constructors

Constructor and Description
BinaryPropExpression(PropExpression<? extends java.lang.Number> a, uk.ac.ed.epcc.webapp.jdbc.expr.Operator op, PropExpression<? extends java.lang.Number> b)

Method Summary

Methods

Modifier and Type	Method and Description
<R> R	accept(BasePropExpressionVisitor<R> vis) Visitor pattern.
BinaryPropExpression	copy() Generate an equivalent (and where possible immutable) copy of this expression.
boolean	equals(java.lang.Object obj)
java.lang.Class<java.lang.Number>	getTarget()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

a

public final PropExpression<? extends java.lang.Number> a

op

public final uk.ac.ed.epcc.webapp.jdbc.expr.Operator op

b

public final PropExpression<? extends java.lang.Number> b

Constructor Detail

BinaryPropExpression

public BinaryPropExpression(PropExpression<? extends java.lang.Number> a,
                    uk.ac.ed.epcc.webapp.jdbc.expr.Operator op,
                    PropExpression<? extends java.lang.Number> b)
                     throws PropertyCastException

Throws:

PropertyCastException

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getTarget

public java.lang.Class<java.lang.Number> getTarget()

Specified by:

getTarget in interface uk.ac.ed.epcc.webapp.Targetted<java.lang.Number>

accept

public <R> R accept(BasePropExpressionVisitor<R> vis)
         throws java.lang.Exception

Description copied from interface: PropExpression

Visitor pattern. Have the BasePropExpressionVisitor visit this expression

Specified by:

accept in interface PropExpression<java.lang.Number>

Throws:

java.lang.Exception

Type Parameters:

R - type of return

Parameters:

vis - visitor

Returns:

result of type R

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

copy

public BinaryPropExpression copy()

Description copied from interface: PropExpression

Generate an equivalent (and where possible immutable) copy of this expression. Most implementing types should themselves be immutable, calling copy on their arguments and returning a self-reference for copy. In this case the return type of the function should be narrowed to the implemeting sub-type.

Specified by:

copy in interface PropExpression<java.lang.Number>

Returns:

PropExpression