Template:— usage_pattern_relationship (use_prln)
Context:— UK_Defence

Date: 2009/04/17 12:30:00
Revision: 1.5

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

This section specifies the template usage_pattern_relationship.

NOTE The template has been defined in the context of UK_Defence. 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 the relationship between the PSE Constituent Usage Patterns. It is essentially used to establish the predecessor successor relationships between Usage patterns.

Business object definition

Figure 1 — Graphical Representation for Business Object usage_pattern_relationship

usage_pattern_relationship

The definition of a usage_pattern_relationship object is: This information object represents information about an actual usage_pattern_relationship of an individual product.

Attribute name	Attribute description	Attribute type	Optionality
Predecessor	This is a reference to the preceeding Usage pattern.	Relationship to Required PSE Constituent Usage Pattern	Mandatory
Sequence no	This is the position of this usage pattern in the sequence of usage patterns.	intrinsic	Mandatory
Successor	This is a reference to the suceeding Usage pattern.	Relationship to Required PSE Constituent Usage Pattern	Mandatory

Table 1 — usage_pattern_relationship attribute details

Model diagrams

The EXPRESS-G diagram in Figure 2 shows the templates and EXPRESS entities that are required to represent the template "usage_pattern_relationship". The text highlighted in blue shows the template parameters.

Figure 2 — An EXPRESS-G representation of the Information model for usage_pattern_relationship

The graphic for the template to be used in other EXPRESS-G diagrams is shown in Figure 3 below.

Figure 3 — The graphical representation of the usage_pattern_relationship template

Input parameters

The following input parameters are defined for this template:

successor (Type= 'ENTITY (Task_step)' )

This is a reference to the suceeding Usage pattern.

predecessor (Type= 'ENTITY (Task_step)' )

This is a reference to the preceeding Usage pattern.

sequence (Type='NUMBER')

This is the sequence number of the relationship.

Reference parameters

The following reference parameters are defined for this template:

usage_pattern_relationship(Type='ENTITY (Task_element_relationship)')

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

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

%^target = $usage_pattern_relationship.usage_pattern_relationship%

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

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.

Task_element_relationship
Task_element_relationship.relating_method -> @predecessor
Task_element_relationship.related_method -> @successor
%^usage_pattern_relationship = Task_element_relationship%
/property(
    ID='sequence',
    property_ecl_id='urn:plcs:rdl:uk_defence',
    value=@sequence,
    unit='Count',
    unit_ecl_id='urn:plcs:rdl:std',
    si_unit='.F.',
    disposition='Actual',
    a_property_of=^usage_pattern_relationship)/

Instance diagrams

The instance diagram in Figure 4 shows an example of the EXPRESS entities and templates that are instantiated by the template:

/usage_pattern_relationship(predecessor='@29', sequence='', successor='@102')/

(an illustration of the consolidated usage_pattern_relationship template is shown in Figure 5 below.)

Figure 4 — Entities instantiated by usage_pattern_relationship template

The instance diagram in Figure 5 shows the graphic symbol for the template that is to be used in other instance diagrams. The example template is:

/usage_pattern_relationship(predecessor='@29', sequence='', successor='@102')/

Figure 5 — Instantiation of usage_pattern_relationship template

Characterizations

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