Template:— ad_representing_contracted_product_variant (ad_rep_contr_prod_var)
Context:— Aerospace_and_Defense

Date: 2011/04/20 13:19:03
Revision: 1.2

Cover Contents Description Model diags.Input params.Ref. params.Instantiation path Instance diags.Characterizations Issues in situ

This section specifies the template ad_representing_contracted_product_variant.

NOTE The template has been defined in the context of Aerospace_and_Defense. Refer to the business context for details of related templates.

NOTE An explanation of a template and the associated instantiation path is provided in the Template overview section.

Description

This template describes how to represent a contracted product variant as a relationship between the product variant and the contract.

Model diagrams

The EXPRESS-G diagram in Figure 1 shows the templates and EXPRESS entities that are required to represent the template "ad_representing_contracted_product_variant". The text highlighted in blue shows the template parameters.

Figure 1 — An EXPRESS-G representation of the Information model for ad_representing_contracted_product_variant

The graphic for the template to be used in other EXPRESS-G diagrams is shown in Figure 2 below.

Figure 2 — The graphical representation of the ad_representing_contracted_product_variant template

Input parameters

The following input parameters are defined for this template:

contract (Type= 'ENTITY (Document)' )

The contract (Document) in which the contracted product variant is included.

product_variant (Type= 'ENTITY (Part)' )

The product variant (Part), being contracted.

Reference parameters

The following reference parameters are defined for this template:

contr_prod_var(Type='ENTITY (Document_assignment)')

Allow the Document_assignment entity instantiated in this path to be referenced when this template is used.

Note: The Document_assignment entity can be referenced in a template path by:

%^target = $ad_representing_contracted_product_variant.contr_prod_var%

where target is the parameter to which the Document_assignment is bound.

Uniqueness constraints

The following parameter combinations specify a uniqueness constraint:

Unique constraint: Contracted product variant

Each instance of the entity (Document_assignment) within the data set shall be uniquely identified by a combination of the following parameters on this template (ad_representing_contracted_product_variant) namely: product_variant, contract.
The instance is referenced by the following template parameter: contr_prod_var.

Instantiation path

The instantiation path shown below specifies the entities that are to be instantiated by the template.

A description of templates and the syntax for the instantiation path is provided in the Templates Help/Information section.

Document_assignment
Document_assignment.role = '/IGNORE'
Document_assignment.is_assigned_to -> @product_variant
%^contr_prod_var = Document_assignment%

-- Assign the role through ref data
/assigning_reference_data(
    items=^contr_prod_var,
    class_name='Contracted_product_variant',
    ecl_id='urn:plcs:rdl:ad')/

-- Identify the contract to be used
Document_assignment.assigned_document -> @contract

The following entities are instantiated with attributes as specified:

Entity in path	Value	Inherited from
Document_assignment.role	'/IGNORE'	—

Instance diagrams

The instance diagram in Figure 3 shows an example of the EXPRESS entities and templates that are instantiated by the template:

/ad_representing_contracted_product_variant(contract='#1', product_variant='#2')/

(an illustration of the consolidated ad_representing_contracted_product_variant template is shown in Figure 4 below.)

Figure 3 — Entities instantiated by ad_representing_contracted_product_variant template

The instance model in STEP ASCII exchange file format (ISO 10303 Part 21 syntax) is:


          #1 = DOCUMENT('/IGNORE','/IGNORE','/IGNORE');
          #2 = PART('/IGNORE','/IGNORE','/IGNORE');
          #3 = DOCUMENT_ASSIGNMENT(#1,#2,'/IGNORE');
          #5 = CLASSIFICATION_ASSIGNMENT(#6,(#3),'/IGNORE');
          #6 = EXTERNAL_CLASS('/NULL','Contracted_product_variant','/IGNORE',#7);
          #7 = EXTERNAL_CLASS_LIBRARY('urn:plcs:rdl:ad','/IGNORE');

The instance diagram in Figure 4 shows the graphic symbol for the template that is to be used in other instance diagrams. The example template is:

/ad_representing_contracted_product_variant(contract='#1', product_variant='#2')/

Figure 4 — Instantiation of ad_representing_contracted_product_variant template

Characterizations

No common characterizations of the template ad_representing_contracted_product_variant have been identified. However, the ISO 10303-239 EXPRESS model may enable other assignments to the entities instantiated by the template.