IlsDynAttribute Class Reference

This abstract class defines the interface of dynamic attributes. More...

#include <ilserver/dynobj.h>

Inherited by IlsDynDerived, IlsDynEntry, and IlsDynSimpleAttribute.

Public Member Functions
	IlsDynAttribute (const IlsAttributeDef &attr)
	Creates an instance of a dynamic attribute.
virtual IlsMvValue	getValue () const
	Returns the value of the dynamic attribute as an instance of IlsMvValue.
virtual IlsMvDataType	getValueType () const
	Returns the type of the dynamic attribute.
virtual IlsBoolean	isModified () const
	Returns IlsTrue if the dynamic attribute has been modified since the last notification cycle. More...
virtual IlsBoolean	setValue (const IlsMvValue &v)
	Sets the value of the dynamic attribute. More...
virtual void	subscribe ()
	Increases the subscription counter for the dynamic attribute. More...
virtual void	unsubscribe ()
	Decreases the subscription counter for the dynamic attribute. More...

Detailed Description

This abstract class defines the interface of dynamic attributes.

Library: dynmvsvr

The various subclasses implement the methods according to their semantics.

This class includes the following list of predefined subtypes, used to provide a Server implementation of dynamic attributes:

• IlsDynSimpleAttribute: encapsulates a simple attribute of type IlsMvValue.
• IlsDynEntry: encapsulates a server entry data member.
• IlsDynDerived: encapsulates a server derived data member.

See also

IlsDynModelInterpreter, IlsDynObject, IlsDynRelation.

Member Function Documentation

isModified()

virtual IlsBoolean IlsDynAttribute::isModified ( ) const

virtual

Returns IlsTrue if the dynamic attribute has been modified since the last notification cycle.

This function is called by during the notification cycle.

setValue()

virtual IlsBoolean IlsDynAttribute::setValue ( const IlsMvValue &  v )

virtual

Sets the value of the dynamic attribute.

Returns

IlsFalse if assignment is not possible.

subscribe()

virtual void IlsDynAttribute::subscribe ( )

virtual

Increases the subscription counter for the dynamic attribute.

This method is called during the notification cycle. It is used only for derived attributes to increase the eargerness.

See also

IlsDerived, IlsDynModelInterpreter::DeclDerived().

unsubscribe()

virtual void IlsDynAttribute::unsubscribe ( )

virtual

Decreases the subscription counter for the dynamic attribute.

This method is called during the notification cycle. It is used only for derived attributes to decrease the eargerness.

See also

IlsDerived, IlsDynModelInterpreter::DeclDerived().