--
-- File      :  SingleParent.cdl
-- Created   :  Sat 9 Jan 1993
-- Author    : CKY / Contract Toubro-Larsen ( Arun MENON )
--
---Copyright : MATRA-DATAVISION  1993
--

class SingleParent from IGESBasic  inherits SingleParentEntity

        ---Purpose: defines SingleParent, Type <402> Form <9>
        --          in package IGESBasic
        --          It defines a logical structure of one independent
        --          (parent) entity and one or more subordinate (children)
        --          entities

uses

    	IGESEntity,
        HArray1OfIGESEntity from IGESData

raises OutOfRange

is

        Create returns mutable SingleParent;

        -- Specific Methods pertaining to the class

        Init (me               : mutable;
              nbParentEntities : Integer;
              aParentEntity    : IGESEntity;
              allChildren      : HArray1OfIGESEntity);
        ---Purpose : This method is used to set the fields of the class
        --           SingleParent
        --       - nbParentEntities : Indicates number of Parents, always = 1
        --       - aParentEntity    : Used to hold the Parent Entity
        --       - allChildren      : Used to hold the children

        NbParentEntities (me) returns Integer;
        ---Purpose : returns the number of Parent Entities, which should be 1

	SingleParent (me) returns IGESEntity;
	---Purpose : Returns the Parent Entity (inherited method)

        NbChildren (me) returns Integer;
        ---Purpose : returns the number of children of the Parent

        Child (me; Index : Integer) returns IGESEntity
        raises OutOfRange;
        ---Purpose : returns the specific child as indicated by Index
        -- raises exception if Index <= 0 or Index > NbChildren()

fields

--
-- Class    : IGESBasic_SingleParent
--
-- Purpose  : Declaration of variables specific to the definition
--            of the Class SingleParent.
--
-- Reminder : A SingleParent instance is defined by :
--            - number of parents (equal to 1)
--            - the parent entity
--            - the children entities

        theNbParentEntities : Integer;
        theParentEntity     : IGESEntity;
        theChildren         : HArray1OfIGESEntity;

end SingleParent;