Notices

Copyright © OASIS Open 2020. All Rights Reserved.

All capitalized terms in the following text have the meanings assigned to them in the OASIS Intellectual Property Rights Policy (the "OASIS IPR Policy"). The full Policy may be found at the OASIS website.

This specification is published under the Attribution 4.0 International (CC BY 4.0). Portions of this specification are also provided under the Apache License 2.0.

All contributions made to this project have been made under the OASIS Contributor License Agreement (CLA).

For information on whether any patents have been disclosed that may be essential to implementing this specification, and any offers of patent licensing terms, please refer to the Open Projects IPR Statements page.

This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published, and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this section are included on all such copies and derivative works. However, this document itself may not be modified in any way, including by removing the copyright notice or references to OASIS, except as needed for the purpose of developing any document or deliverable produced by an OASIS Open Project or OASIS Technical Committee (in which case the rules applicable to copyrights, as set forth in the OASIS IPR Policy, must be followed) or as required to translate it into languages other than English.

The limited permissions granted above are perpetual and will not be revoked by OASIS or its successors or assigns.

This document and the information contained herein is provided on an "AS IS" basis and OASIS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY OWNERSHIP RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

OASIS requests that any OASIS Party or any other party that believes it has patent claims that would necessarily be infringed by implementations of this OASIS Project Specification or OASIS Standard, to notify the OASIS TC Administrator and provide an indication of its willingness to grant patent licenses to such patent claims in a manner consistent with the IPR Mode of the OASIS Technical Committee that produced this specification.

OASIS invites any party to contact the OASIS TC Administrator if it is aware of a claim of ownership of any patent claims that would necessarily be infringed by implementations of this specification by a patent holder that is not willing to provide a license to such patent claims in a manner consistent with the IPR Mode of the OASIS Open Project that produced this specification. OASIS may include such claims on its website, but disclaims any obligation to do so.

OASIS takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on OASIS' procedures with respect to rights in any document or deliverable produced by an OASIS Technical Committee can be found on the OASIS website. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this OASIS Open Project Specification or OASIS Standard, can be obtained from the OASIS TC Administrator. OASIS makes no representation that any information or list of intellectual property rights will at any time be complete, or that any claims in such list are, in fact, Essential Claims.

The name "OASIS" is a trademark of OASIS, the owner and developer of this specification, and should be used only to refer to the organization and its official outputs. OASIS welcomes reference to, and implementation and use of, specifications, while reserving the right to enforce its marks against misleading uses. Please see https://www.oasis-open.org/policies-guidelines/trademark for above guidance.

Table of Contents

1. Introduction

This section is non-normative.

This specification defines resource shapes for the OSLC Requirements Management resources. The intent is to define resources needed to support common integration scenarios and not to provide a comprehensive definition of a Requirement. The resource formats may not match exactly the native models supported by requirement management service providers, but are intended to be compatible with them. The approach to supporting these scenarios is to delegate operations, as driven by service provider contributed user interfaces, as much as possible and not require a service provider to expose its complete data model and application logic.

1.1 Terminology

This section is non-normative.

Terminology is based on OSLC Core Overview [OSLCCore3], W3C Linked Data Platform [LDP], W3C's Architecture of the World Wide Web [WEBARCH], Hyper-text Transfer Protocol [HTTP11]. Terminology for this specification is defined in part 1 of the multi-part specification.

1.2 References

1.2.1 Normative references

[HTTP11]
R. Fielding, Ed.; J. Reschke, Ed.. Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing. June 2014. Proposed Standard. URL: https://httpwg.org/specs/rfc7230.html
[LDP]
Steve Speicher; John Arwe; Ashok Malhotra. Linked Data Platform 1.0. 26 February 2015. W3C Recommendation. URL: https://www.w3.org/TR/ldp/
[OSLCCore2]
S. Speicher; D. Johnson. OSLC Core 2.0. Finalized. URL: http://open-services.net/bin/view/Main/OslcCoreSpecification
[OSLCCore3]
Jim Amsden; S. Speicher. OSLC Core 3.0. Project Specification. URL: https://docs.oasis-open.org/oslc-core/oslc-core/v3.0/oslc-core-v3.0-part1-overview.html
[OSLCCore3LinkGuidance]
Jim Amsden. OSLC Core 3.0: Link Guidance. Project Note Draft. URL: https://oslc-op.github.io/oslc-specs/notes/link-guidance.html
[RFC2119]
S. Bradner. Key words for use in RFCs to Indicate Requirement Levels. March 1997. Best Current Practice. URL: https://tools.ietf.org/html/rfc2119

1.2.2 Informative references

[WEBARCH]
Ian Jacobs; Norman Walsh. Architecture of the World Wide Web, Volume One. 15 December 2004. W3C Recommendation. URL: https://www.w3.org/TR/webarch/

1.3 Typographical Conventions and Use of RFC Terms

As well as sections marked as non-normative, all authoring guidelines, diagrams, examples, and notes in this specification are non-normative. Everything else in this specification is normative.

The key words MUST, MUST NOT, REQUIRED, SHOULD, SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL in this specification are to be interpreted as described in [RFC2119].

In addition to the namespace URIs and namespace prefixes oslc, rdf, dcterms and foaf defined in the OSLC Core specification, OSLC RM defines the namespace URI of http://open-services.net/ns/rm# with a namespace prefix of oslc_rm

2. Conformance

Requirements Management servers MUST use the vocabulary terms defined here where required, and with the meanings defined here.

Requirements Management servers MAY augment this vocabulary with additional classes, properties, and individuals.

3. Requirements Management Resource Constraints

3.1 Resource: RequirementShape

The constraints on the Requirement resource properties are defined in the tables below. Requirement resource properties are not limited to the ones defined in this specification. Service providers may provide additional properties. It is strongly recommended that any additional properties be defined in XML namespaces distinct from those defined by OSLC in these specifications. Requirement creation through a Creation Factory resource in the Service Description is REQUIRED by this specification.

Any resource asserted to be of rdf:type http://open-services.net/ns/rm#Requirement MUST conform to the constraints and meaning of properties defined below. Notice that partial representations of a requirement resource are admitted by this specification (for example, in query results, or where oslc.properties has been used), and such partial representations will in general not conform to these constraints.

Requirement Properties
Prefixed Name Occurs Read-only Value-type Representation Range Description
dcterms:contributor Zero-or-many unspecified AnyResource Either oslc:AnyResource Contributor(s) to resource (reference: Dublin Core). It is likely that the target resource will be a <code>foaf:Person</code> but that is not necessarily the case.
dcterms:created Zero-or-one true dateTime N/A Unspecified Timestamp of resource creation (reference: Dublin Core).
dcterms:creator Zero-or-many unspecified AnyResource Either oslc:AnyResource Creator(s) of resource (reference: Dublin Core). It is likely that the target resource will be an <code>foaf:Person</code> but that is not necessarily the case.
dcterms:description Zero-or-one unspecified XMLLiteral N/A Unspecified Descriptive text (reference: Dublin Core) about resource represented as rich text in XHTML content. SHOULD include only content that is valid and suitable inside an XHTML <div> element.
dcterms:identifier Zero-or-one true string N/A Unspecified An identifier for a resource. This identifier may be unique with a scope that is defined by the RM provider. Assigned by the service provider when a resource is created. Not intended for end-user display.
dcterms:modified Zero-or-one true dateTime N/A Unspecified Timestamp of last resource modification (reference: Dublin Core).
dcterms:subject Zero-or-many false string N/A Unspecified Tag or keyword for a resource. Each occurrence of a dcterms:subject property denotes an additional tag for the resource.
dcterms:title Exactly-one unspecified XMLLiteral N/A Unspecified Title (reference: Dublin Core) of the resource represented as rich text in XHTML content. SHOULD include only content that is valid inside an XHTML <span> element.
oslc_rm:affectedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is affected by the object, such as a defect or issue.
oslc_rm:constrainedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is constrained by the object. For example, a functional requirement is constrained by a safety requirement.
oslc_rm:constrains Zero-or-many false Resource Reference oslc:AnyResource The object is constrained by the subject.
oslc_rm:decomposedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is decomposed by the object. For example, a system requirement is decomposed into a collection of system requirements.
oslc_rm:decomposes Zero-or-many false Resource Reference oslc:AnyResource The object is decomposed by the subject.
oslc_rm:elaboratedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is elaborated by the object. For example, a user requirement is elaborated by use case.
oslc_rm:elaborates Zero-or-many false Resource Reference oslc:AnyResource The object is elaborated by the subject.
oslc_rm:implementedBy Zero-or-many false Resource Reference oslc:AnyResource Resource, such as a change request, which implements this requirement.
oslc_rm:satisfiedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is satisfied by the object. For example, a user requirement is satisfied by a system requirement.
oslc_rm:satisfies Zero-or-many false Resource Reference oslc:AnyResource The object is satisfied by the subject.
oslc_rm:specifiedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is specified by the object. For example, a requirement is elaborated by a model element.
oslc_rm:specifies Zero-or-many false Resource Reference oslc:AnyResource The object is specified by the subject.
oslc_rm:trackedBy Zero-or-many false Resource Reference oslc:AnyResource Resource, such as a change request, which tracks this requirement.
oslc_rm:validatedBy Zero-or-many false Resource Reference oslc:AnyResource Resource, such as a test case, which validates this requirement.
oslc:instanceShape Zero-or-one unspecified Resource Reference oslc:ResourceShape Resource Shape that provides hints as to resource property value-types and allowed values.
oslc:serviceProvider Zero-or-many unspecified Resource Reference oslc:ServiceProvider The scope of a resource is a URI for the resource's OSLC Service Provider.
oslc:shortTitle Zero-or-one unspecified XMLLiteral N/A Unspecified Short name identifying a resource, often used as an abbreviated identifier for presentation to end-users. SHOULD include only content that is valid inside an XHTML <span> element.
rdf:type Zero-or-many unspecified Resource Reference Unspecified The resource type URIs.

3.2 Resource: RequirementCollectionShape

The constraints on the RequirementCollection vocaubluary resource properties are defined in the tables below. RequirementCollection resource properties are not limited to the ones defined in this specification, service providers may provide additional properties. It is strongly recommended that any additional properties be defined in XML namespaces distinct from those defined by OSLC in these specifications. RequirementCollection creation through a Creation Factory resource in the Service Description is OPTIONAL in this specification.

Any resource asserted to be of rdf:type http://open-services.net/ns/rm#RequirementCollection MUST conform to the constraints and meaning of properties defined below. Notice that partial representations of a requirement collection resource are admitted by this specification (for example, in query results, or where oslc.properties has been used), and such partial representations will in general not conform to these constraints.

RequirementCollection Properties
Prefixed Name Occurs Read-only Value-type Representation Range Description
dcterms:contributor Zero-or-many unspecified AnyResource Either oslc:AnyResource Contributor(s) to resource (reference: Dublin Core). It is likely that the target resource will be a <code>foaf:Person</code> but that is not necessarily the case.
dcterms:created Zero-or-one true dateTime N/A Unspecified Timestamp of resource creation (reference: Dublin Core).
dcterms:creator Zero-or-many unspecified AnyResource Either oslc:AnyResource Creator(s) of resource (reference: Dublin Core). It is likely that the target resource will be an <code>foaf:Person</code> but that is not necessarily the case.
dcterms:description Zero-or-one unspecified XMLLiteral N/A Unspecified Descriptive text (reference: Dublin Core) about resource represented as rich text in XHTML content. SHOULD include only content that is valid and suitable inside an XHTML <div> element.
dcterms:identifier Zero-or-one true string N/A Unspecified An identifier for a resource. This identifier may be unique with a scope that is defined by the RM provider. Assigned by the service provider when a resource is created. Not intended for end-user display.
dcterms:modified Zero-or-one true dateTime N/A Unspecified Timestamp of last resource modification (reference: Dublin Core).
dcterms:subject Zero-or-many false string N/A Unspecified Tag or keyword for a resource. Each occurrence of a dcterms:subject property denotes an additional tag for the resource.
dcterms:title Exactly-one unspecified XMLLiteral N/A Unspecified Title (reference: Dublin Core) of the resource represented as rich text in XHTML content. SHOULD include only content that is valid inside an XHTML <span> element.
oslc_rm:affectedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is affected by the object, such as a defect or issue.
oslc_rm:constrainedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is constrained by the object. For example, a requirement collection is constrained by a requirement collection.
oslc_rm:constrains Zero-or-many false Resource Reference oslc:AnyResource The object is constrained by the subject.
oslc_rm:decomposedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is decomposed by the object. For example, a collection of business requirements is decomposed by a collection of user requirements.
oslc_rm:decomposes Zero-or-many false Resource Reference oslc:AnyResource The object is decomposed by the subject.
oslc_rm:elaboratedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is elaborated by the object. For example, a collection of user requirements elaborates a business need, or a model elaborates a collection of system requirements.
oslc_rm:elaborates Zero-or-many false Resource Reference oslc:AnyResource The object is elaborated by the subject.
oslc_rm:implementedBy Zero-or-many false Resource Reference oslc:AnyResource Resource, such as a change request, which implements this requirement collection.
oslc_rm:satisfiedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is satisfied by the object. For example, a collection of user requirements is satisfied by a requirement collection of system requirements.
oslc_rm:satisfies Zero-or-many false Resource Reference oslc:AnyResource The object is satisfied by the subject.
oslc_rm:specifiedBy Zero-or-many false Resource Reference oslc:AnyResource The subject is specified by the object. For example, a model element might make a requirement collection more precise.
oslc_rm:specifies Zero-or-many false Resource Reference oslc:AnyResource The object is specified by the subject.
oslc_rm:trackedBy Zero-or-many false Resource Reference oslc:AnyResource Resource, such as a change request, which manages this requirement collection.
oslc_rm:uses Zero-or-many unspecified Resource Reference oslc:AnyResource A collection uses a resource - the resource is in the requirement collection.
oslc_rm:validatedBy Zero-or-many false Resource Reference oslc:AnyResource Resource, such as a test plan, which validates this requirement collection.
oslc:instanceShape Zero-or-one unspecified Resource Reference oslc:ResourceShape Resource Shape that provides hints as to resource property value-types and allowed values.
oslc:serviceProvider Zero-or-many unspecified Resource Reference oslc:ServiceProvider The scope of a resource is a URI for the resource's OSLC Service Provider.
oslc:shortTitle Zero-or-one unspecified XMLLiteral N/A Unspecified Short name identifying a resource, often used as an abbreviated identifier for presentation to end-users. SHOULD include only content that is valid inside an XHTML <span> element.
rdf:type Zero-or-many unspecified Resource Reference Unspecified The resource type URIs.

4. Relationship Properties

This section is non-normative.

For compatibility with OSLC Core 2.0 [OSLCCore2], RM servers MAY accept relationship properties. This is however no longer recommended practice, since the necessary reification of relationship can have entailment and inferencing issues. OSLC Core 3.0 Link Guidance [OSLCCore3LinkGuidance] details an alternative approach, where a separate resource is created to represent the relationship and its properties.

The following relationship properties are defined by this specification:

Prefixed Name Occurs Read-only Value-type Representation Range Description
dcterms:title zero-or-one unspecified XMLLiteral n/a n/a Title (reference: Dublin Core) of the link represented as rich text in XHTML content. SHOULD include only content that is valid inside an XHTML <span> element.
dcterms:creator zero-or-many unspecified Resource or Local Resource Either Reference or Inline any Creator(s) of resource (reference: Dublin Core). It is likely that the target resource will be a foaf:Person but that is not necessarily the case.
dcterms:contributor zero-or-many unspecified Resource or Local Resource Either Reference or Inline any Creator(s) of resource (reference: Dublin Core). It is likely that the target resource will be a foaf:Person but that is not necessarily the case.
dcterms:created zero-or-one True DateTime n/a n/a Timestamp of link creation (reference: Dublin Core).
dcterms:modified zero-or-one True DateTime n/a n/a Timestamp last latest link modification (reference: Dublin Core).

4.1 Relationship labels

This section is non-normative.

When an RM relationship property is to be presented in a user interface, it may be helpful to provide an informative and useful textual label for that relationship instance. (This in addition to the relationship property URI and the object resource URI, which are also candidates for presentation to a user.) To this end, OSLC Servers MAY suppport a dcterms:title link property in RM resource representations where a relationship property is permitted, using the anchor approach outlined in the OSLC Core Links Guidance.

Servers and Clients should be aware that the dcterms:title of a link is unrelated to the dcterms:title of the object resource. Indeed, links may carry other properties with names in common to the object of the link, but there is no specified relationship between these property values.