Template:— assigning_task_element (asg_task_elem)
Capability:representing_task		 Date: 2009/03/11 08:57:22
Revision: 1.4
CoverContentsDescriptionModel diags.Input params.Ref. params.Instantiation pathInstance diags.CharacterizationsIssuesin situ

This section specifies the template assigning_task_element.

NOTE  The template has been defined in the context of the capability representing_task which provides an overall description of the relevant parts of the ISO 10303-239 information model and a description 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 the assignment of a Task_element to another item in the model.

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


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

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

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 assigning_task_element template

Figure 2 —  The graphical representation of the assigning_task_element template

Input parameters
The following input parameters are defined for this template:
task_element (Type= 'ENTITY (Task_element)' )
The Task_element which is assigned to something else (task_item).
items (Type= 'SELECT (task_item)' )
The target of the assignment, i.e. the entity instance that the Task_element is assigned to.
role (Type='CLASS')
The name of the External_class used to classify the "Task element assignment" (urn:plcs:rdl:std:Task element assignment)
The following classes and their sub-classes can be used:
classifications: "Task_element_assignment" (urn:plcs:rdl:std:Task_element_assignment)
role_ecl_id (Default=urn:plcs:rdl:std,Type='URN')
The identifier of the External_class_library storing the definition of the External_class referenced by the parameter @role.
Reference parameters
The following reference parameters are defined for this template:
task_elem_asg(Type='ENTITY (Task_element_assignment)')
Allow the Task_element_assignment entity instantiated in this path to be referenced when this template is used.
Note: The Task_element_assignment entity can be referenced in a template path by:
%^target = $assigning_task_element.task_elem_asg%
where target is the parameter to which the Task_element_assignment is bound.
Uniqueness constraints

The following parameter combinations specify a uniqueness constraint:
Unique constraint: Task element assignment
Each instance of the entity (Task_element_assignment) within the data set shall be uniquely identified by a combination of the following parameters on this template (assigning_task_element) namely: task_element, items, role, role_ecl_id.
The instance is referenced by the following template parameter: task_elem_asg.
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_assignment
%^task_elem_asg = Task_element_assignment%
Task_element_assignment.role = '/IGNORE'
Task_element_assignment.assigned_activity_method -> @task_element
Task_element_assignment.items -> @items

-- provide the role of the realization by classifying the Task_method_version_relationship
/assigning_reference_data(
    items=^task_elem_asg,
    class_name=@role,
    ecl_id=@role_ecl_id)/
The following entities are instantiated with attributes as specified:
Entity in path Value Inherited from
Task_element_assignment.role '/IGNORE' Applied_activity_method_assignment.role
Instance diagrams
The instance diagram in Figure  3 shows an example of the EXPRESS entities and templates that are instantiated by the template:
/assigning_task_element(task_element='#61', items='#29', role='Subtask_target_item', role_ecl_id='urn:plcs:rdl:sample')/
(an illustration of the consolidated assigning_task_element template is shown in Figure 4 below.)


Figure 3 —  Entities instantiated by assigning_task_element template

Figure 3 —  Entities instantiated by assigning_task_element template

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

          #2 = TASK_ELEMENT_ASSIGNMENT(#61,(#29),'/IGNORE');
          #4 = CLASSIFICATION_ASSIGNMENT(#5,(#2),'/IGNORE');
          #5 = EXTERNAL_CLASS('/NULL','Subtask_target_item','/IGNORE',#6);
          #6 = EXTERNAL_CLASS_LIBRARY('urn:plcs:rdl:sample','/IGNORE');
          #8 = BREAKDOWN_ELEMENT('/IGNORE','/IGNORE','/IGNORE');
          #10 = IDENTIFICATION_ASSIGNMENT('Circuit breaker','/IGNORE','/IGNORE',(#8));
          #12 = CLASSIFICATION_ASSIGNMENT(#13,(#10),'/IGNORE');
          #13 = EXTERNAL_CLASS('/NULL','Breakdown_element_identification_code','/IGNORE',#14);
          #14 = EXTERNAL_CLASS_LIBRARY('urn:plcs:rdl:std','/IGNORE');
          #17 = ORGANIZATION('/IGNORE','/IGNORE');
          #19 = IDENTIFICATION_ASSIGNMENT($,'/IGNORE','/IGNORE',(#17));
          #21 = CLASSIFICATION_ASSIGNMENT(#22,(#19),'/IGNORE');
          #22 = EXTERNAL_CLASS('/NULL','Organization_name','/IGNORE',#14);
          #24 = ORGANIZATION_OR_PERSON_IN_ORGANIZATION_ASSIGNMENT(#17,'/IGNORE',(#10));
          #26 = CLASSIFICATION_ASSIGNMENT(#27,(#24),'/IGNORE');
          #27 = EXTERNAL_CLASS('/NULL','Owner_of','/IGNORE',#14);
          #29 = BREAKDOWN_ELEMENT_VERSION('/IGNORE','/IGNORE',#8);
          #31 = IDENTIFICATION_ASSIGNMENT('Unknown','/IGNORE','/IGNORE',(#29));
          #33 = CLASSIFICATION_ASSIGNMENT(#34,(#31),'/IGNORE');
          #34 = EXTERNAL_CLASS('/NULL','Version_identification_code','/IGNORE',#14);
          #38 = ORGANIZATION('/IGNORE','/IGNORE');
          #40 = IDENTIFICATION_ASSIGNMENT('Unknown','/IGNORE','/IGNORE',(#38));
          #42 = CLASSIFICATION_ASSIGNMENT(#22,(#40),'/IGNORE');
          #45 = ORGANIZATION_OR_PERSON_IN_ORGANIZATION_ASSIGNMENT(#38,'/IGNORE',(#31));
          #47 = CLASSIFICATION_ASSIGNMENT(#27,(#45),'/IGNORE');
          #50 = BREAKDOWN_ELEMENT_DEFINITION('/IGNORE','/IGNORE','/IGNORE',#51,(),#29);
          #51 = VIEW_DEFINITION_CONTEXT('/IGNORE','/IGNORE','/IGNORE');
          #53 = CLASSIFICATION_ASSIGNMENT(#54,(#51),'/IGNORE');
          #54 = EXTERNAL_CLASS('/NULL','Support_stage','/IGNORE',#14);
          #57 = CLASSIFICATION_ASSIGNMENT(#58,(#51),'/IGNORE');
          #58 = EXTERNAL_CLASS('/NULL','Product_life_cycle_support','/IGNORE',#14);
          #60 = BREAKDOWN_CONTEXT('/IGNORE','/IGNORE','/IGNORE',$,#50);
          #61 = TASK_STEP($,'Turn on electrical switch.',$,$,$);
The instance model in STEP XML exchange file format (ISO 10303 Part 28 ed.2 syntax) is: 
<ap239:uos
  xsi:schemaLocation="urn:iso10303-28:xs/Product_life_cycle_support arm_lf_p28xsd.xsd">
  <ap239:Task_element_assignment
    id="i2">
    <Assigned_activity_method>
      <ap239:Task_step
        ref="i61"
        xsi:nil="true">
    </Assigned_activity_method>
    <Items>
      <ap239:Breakdown_element_version
        ref="i29"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Task_element_assignment>
  <ap239:Classification_assignment
    id="i4">
    <Assigned_class>
      <ap239:External_class
        ref="i5"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Task_element_assignment
        ref="i2"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i5">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i6"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:External_class_library
    id="i6">
    <Id/>
    <Description/>
  </ap239:External_class_library>
  <ap239:Breakdown_element
    id="i8">
    <Id/>
    <Name/>
    <Description/>
  </ap239:Breakdown_element>
  <ap239:Identification_assignment
    id="i10">
    <Identifier/>
    <Role/>
    <Description/>
    <Items>
      <ap239:Breakdown_element
        ref="i8"
        xsi:nil="true">
    </Items>
  </ap239:Identification_assignment>
  <ap239:Classification_assignment
    id="i12">
    <Assigned_class>
      <ap239:External_class
        ref="i13"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Identification_assignment
        ref="i10"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i13">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i14"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:External_class_library
    id="i14">
    <Id/>
    <Description/>
  </ap239:External_class_library>
  <ap239:Organization
    id="i17">
    <Id/>
    <Name/>
  </ap239:Organization>
  <ap239:Identification_assignment
    id="i19">
    <Identifier/>
    <Role/>
    <Description/>
    <Items>
      <ap239:Organization
        ref="i17"
        xsi:nil="true">
    </Items>
  </ap239:Identification_assignment>
  <ap239:Classification_assignment
    id="i21">
    <Assigned_class>
      <ap239:External_class
        ref="i22"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Identification_assignment
        ref="i19"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i22">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i14"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:Organization_or_person_in_organization_assignment
    id="i24">
    <Assigned_entity>
      <ap239:Organization
        ref="i17"
        xsi:nil="true">
    </Assigned_entity>
    <Role/>
    <Items>
      <ap239:Identification_assignment
        ref="i10"
        xsi:nil="true">
    </Items>
  </ap239:Organization_or_person_in_organization_assignment>
  <ap239:Classification_assignment
    id="i26">
    <Assigned_class>
      <ap239:External_class
        ref="i27"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Organization_or_person_in_organization_assignment
        ref="i24"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i27">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i14"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:Breakdown_element_version
    id="i29">
    <Id/>
    <Description/>
    <Of_product>
      <ap239:Breakdown_element
        ref="i8"
        xsi:nil="true">
    </Of_product>
  </ap239:Breakdown_element_version>
  <ap239:Identification_assignment
    id="i31">
    <Identifier/>
    <Role/>
    <Description/>
    <Items>
      <ap239:Breakdown_element_version
        ref="i29"
        xsi:nil="true">
    </Items>
  </ap239:Identification_assignment>
  <ap239:Classification_assignment
    id="i33">
    <Assigned_class>
      <ap239:External_class
        ref="i34"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Identification_assignment
        ref="i31"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i34">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i14"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:Organization
    id="i38">
    <Id/>
    <Name/>
  </ap239:Organization>
  <ap239:Identification_assignment
    id="i40">
    <Identifier/>
    <Role/>
    <Description/>
    <Items>
      <ap239:Organization
        ref="i38"
        xsi:nil="true">
    </Items>
  </ap239:Identification_assignment>
  <ap239:Classification_assignment
    id="i42">
    <Assigned_class>
      <ap239:External_class
        ref="i22"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Identification_assignment
        ref="i40"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:Organization_or_person_in_organization_assignment
    id="i45">
    <Assigned_entity>
      <ap239:Organization
        ref="i38"
        xsi:nil="true">
    </Assigned_entity>
    <Role/>
    <Items>
      <ap239:Identification_assignment
        ref="i31"
        xsi:nil="true">
    </Items>
  </ap239:Organization_or_person_in_organization_assignment>
  <ap239:Classification_assignment
    id="i47">
    <Assigned_class>
      <ap239:External_class
        ref="i27"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:Organization_or_person_in_organization_assignment
        ref="i45"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:Breakdown_element_definition
    id="i50">
    <Id/>
    <Name/>
    <Additional_characterization/>
    <Initial_context>
      <ap239:View_definition_context
        ref="i51"
        xsi:nil="true">
    </Initial_context>
    <Additional_contexts/>
    <Defined_version>
      <ap239:Breakdown_element_version
        ref="i29"
        xsi:nil="true">
    </Defined_version>
  </ap239:Breakdown_element_definition>
  <ap239:View_definition_context
    id="i51">
    <Application_domain/>
    <Life_cycle_stage/>
    <Description/>
  </ap239:View_definition_context>
  <ap239:Classification_assignment
    id="i53">
    <Assigned_class>
      <ap239:External_class
        ref="i54"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:View_definition_context
        ref="i51"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i54">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i14"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:Classification_assignment
    id="i57">
    <Assigned_class>
      <ap239:External_class
        ref="i58"
        xsi:nil="true">
    </Assigned_class>
    <Items>
      <ap239:View_definition_context
        ref="i51"
        xsi:nil="true">
    </Items>
    <Role/>
  </ap239:Classification_assignment>
  <ap239:External_class
    id="i58">
    <Id/>
    <Name/>
    <Description/>
    <External_source>
      <ap239:External_class_library
        ref="i14"
        xsi:nil="true">
    </External_source>
  </ap239:External_class>
  <ap239:Breakdown_context
    id="i60">
    <Id/>
    <Name/>
    <Description/>
    <Breakdown>
      <ap239:Breakdown_version
        xsi:nil="true">
    </Breakdown>
    <Breakdown_element>
      <ap239:Breakdown_element_definition
        ref="i50"
        xsi:nil="true">
    </Breakdown_element>
  </ap239:Breakdown_context>
  <ap239:Task_step
    id="i61">
    <Name/>
    <Description/>
    <Purpose/>
  </ap239:Task_step>
</ap239:uos>
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:
/assigning_task_element(task_element='#61', items='#29', role='Subtask_target_item', role_ecl_id='urn:plcs:rdl:sample')/


Figure 4 —  Instantiation of assigning_task_element template

Figure 4 —  Instantiation of assigning_task_element template

Characterizations
The following section details how the assigning_task_element template can be optionally characterized by assigning other constructs to it. These are characterizations commonly applied to the template. The ISO 10303-239 EXPRESS model may enable other assignments to the entities instantiated by the template.
The following characterizations may apply:
Characterization Assigning date

NOTE   this characterization is optional.

The date when the Task_element_assignment was instantiated can be represented by assigning a date using the assigning_calendar_date template with the Date_time being classified as a type of "Date actual creation" (urn:plcs:rdl:std:Date actual creation).

NOTE    The assignment of dates is described the capability C036: assigning_date_time.

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