viper.api.datatypes
Class InstanceOfConstraint

java.lang.Object
  viper.api.datatypes.InstanceOfConstraint

All Implemented Interfaces:

AttrValueWrapper

Direct Known Subclasses:

AttributeBbox, AttributeEllipse, AttributeObox, AttributeWrapperOmega, Bvalue, CircleWrapper, Dvalue, Fvalue, Point, Polygon, Svalue

public class InstanceOfConstraint

extends java.lang.Object

implements AttrValueWrapper

A simple param for Attributes that constrains the value to instances of a given class or interface. It defaults to java.lang.Object, meaning that it allows any java object as a value.

Constructor Summary

InstanceOfConstraint()
Constructs a new constraint that accepts any class that is a child of Object.

InstanceOfConstraint(java.lang.Class constraint)
Creates a new InstanceOfConstraint with the given class as the constraint.

Method Summary

boolean	equals(java.lang.Object o) Tests to see if the specified object contains the same constraint.
java.lang.Object	getObjectValue(java.lang.Object o) Returns the specified object, as it is assumed to be of the same type.
int	hashCode() Gets a hash code for the type.
java.lang.Object	setAttributeValue(java.lang.Object o) Converts the object from external/unencoded form into internal/encoded form, while checking to make sure it is valid.

Methods inherited from class java.lang.Object

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

Constructor Detail

InstanceOfConstraint

public InstanceOfConstraint(java.lang.Class constraint)

Creates a new InstanceOfConstraint with the given class as the constraint.

Parameters:

constraint - the class that any value must be an instance of

InstanceOfConstraint

public InstanceOfConstraint()

Constructs a new constraint that accepts any class that is a child of Object.

Method Detail

getObjectValue

public java.lang.Object getObjectValue(java.lang.Object o)

Returns the specified object, as it is assumed to be of the same type.

Specified by:

getObjectValue in interface AttrValueWrapper

Parameters:

o -

Returns:

the unencoded value

See Also:

AttrValueWrapper.getObjectValue(Object)

setAttributeValue

public java.lang.Object setAttributeValue(java.lang.Object o)

Description copied from interface: AttrValueWrapper

Converts the object from external/unencoded form into internal/encoded form, while checking to make sure it is valid.

Specified by:

setAttributeValue in interface AttrValueWrapper

Parameters:

o - the new value to set

Returns:

The object in internal format

See Also:

AttrValueWrapper.setAttributeValue(Object)

equals

public boolean equals(java.lang.Object o)

Tests to see if the specified object contains the same constraint.

Parameters:

o - the object to compare with

Returns:

true if o constrians the types to the same class as this one

hashCode

public int hashCode()

Gets a hash code for the type.

Returns:

constraint.hashCode()