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

Class NamePropExpression

java.lang.Object

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

All Implemented Interfaces:

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

public class NamePropExpression
extends java.lang.Object
implements PropExpression<java.lang.String>

A PropExpression that evaluates to the name of a referenced object.

Author:

spb

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	UNKNOWN

Constructor Summary

Constructors

Constructor and Description
NamePropExpression(ReferenceExpression<? extends uk.ac.ed.epcc.webapp.model.data.DataObject> tag)

Method Summary

Methods

Modifier and Type	Method and Description
<R> R	accept(BasePropExpressionVisitor<R> vis) Visitor pattern.
NamePropExpression	copy() Generate an equivalent (and where possible immutable) copy of this expression.
boolean	equals(java.lang.Object obj)
java.lang.Class<java.lang.String>	getTarget()
ReferenceExpression<? extends uk.ac.ed.epcc.webapp.model.data.DataObject>	getTargetRef()
int	hashCode()
static <T extends uk.ac.ed.epcc.webapp.model.data.DataObject> java.lang.String	refToName(uk.ac.ed.epcc.webapp.AppContext c, uk.ac.ed.epcc.webapp.model.data.reference.IndexedReference<T> ref)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN

public static final java.lang.String UNKNOWN

See Also:

Constant Field Values

Constructor Detail

NamePropExpression

public NamePropExpression(ReferenceExpression<? extends uk.ac.ed.epcc.webapp.model.data.DataObject> tag)

Method Detail

getTargetRef

public ReferenceExpression<? extends uk.ac.ed.epcc.webapp.model.data.DataObject> getTargetRef()

getTarget

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

Specified by:

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

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

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.String>

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 NamePropExpression 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.String>

Returns:

PropExpression

refToName

public static <T extends uk.ac.ed.epcc.webapp.model.data.DataObject> java.lang.String refToName(uk.ac.ed.epcc.webapp.AppContext c,
                                                                                uk.ac.ed.epcc.webapp.model.data.reference.IndexedReference<T> ref)