slreq.Link class

Package: slreq

Work with link objects

Description

When you establish a traceable association between artifacts, Requirements Toolbox™ creates an slreq.Link object to store source and destination data of the link.

Creation

link = slreq.createLink(src, dest) creates an slreq.Link object link with source and destination artifacts specified by src and dest respectively. The slreq.Link object is stored in the Link set file that belongs to src.

outLinks = slreq.outLinks(src) returns an array of slreq.Link objects outLinks that contains the outgoing links from the source artifact src.

inLinks = slreq.inLinks(dest) returns an array of slreq.Link objects inLinks that contains the incoming links to the destination artifact dest.

Input Arguments

src — Link source artifact

struct

Link source artifact, specified as a MATLAB^® structure.

dest — Link destination artifact

struct

Link destination artifact, specified as a MATLAB structure.

Output Arguments

link — Link object

slreq.Link object

Handle to a link, returned as an slreq.Link object.

outLinks — Outgoing links

slreq.Link object array

Array of outgoing links.

inLinks — Incoming links

slreq.Link object array

Array of incoming links.

Properties

CreatedOn — Date link was created

datetime value

The date on which the link was created, specified as a datetime value. The software populates this property.

CreatedBy — Link creator

character vector

The name of the individual or organization who created the link.

ModifiedOn — Date link was modified

datetime value

The date on which the link was last modified, specified as a datetime value. The software populates this property.

ModifiedBy — Link modifier

character vector

The name of the individual or organization who last modified the link.

Comments — Link comments

struct

The comments that are attached with the link, returned as a structure.

Type — Link type enumeration

'Relate' | 'Implement' | 'Verify' | 'Derive' | 'Refine' | 'Confirm' | string scalar | character vector

Link type enumeration, specified as one of the options in the table:

Type	Description
'Relate'	General relationship between items for most use cases Bi-directional link
'Implement'	Specifies the source item that implements the requirement Contributes to the implementation status For more information, see Review Requirements Implementation Status.
'Verify'	Specifies which source item verifies the requirement Contributes to the verification status if the source item is one of the accepted item types For more information, see Review Requirements Verification Status.
'Derive'	Specifies which source item derives the destination item
'Refine'	Specifies which source item adds detail for the functionality specified by the destination item
'Confirm'	Specifies relationship between a requirement and an external test result source Can contribute to the verification status in certain cases For more information, see Include Results from External Sources in Verification Status.
string scalar or character vector	String scalar or character vector that specifies a custom link type. For more information, see Define Custom Requirement and Link Types.

For more information, see Link Types.

Description — Link description

character vector

Link descriptive text, specified as a multi-line character vector.

Keywords — Link keywords

character array

Link keywords, specified as character array.

Rationale — Link rationale

character vector

Link rationale text, specified as a multiline character vector.

SID — Link Session Independent Identifier

character vector

The Session Independent Identifier corresponding to the link.

Methods

destination	Get link destination
getAttribute	Get link custom attributes
isResolved	Check if the link is resolved
isResolvedDestination	Check if the link destination is resolved
isResolvedSource	Check if the link source is resolved
linkSet	Return parent link set
remove	Delete links
setAttribute	Set link custom attributes
setDestination	Set requirement link destination
setSource	Set requirement link source
source	Get link source

Examples

Create a Link

This example shows how to create a link.

Create a link between the currently selected Simulink^® block and a requirement req.

link1 = slreq.createLink(gcb,req)

link1 = 

  Link with properties:

           Type: 'Implement'
    Description: 'Plant Specs'
       Keywords: [0×0 char]
      Rationale: ''
      CreatedOn: 02-Sep-2017 15:49:28
      CreatedBy: 'Jane Doe'
     ModifiedOn: 21-Oct-2017 11:34:12
     ModifiedBy: 'John Doe'
       Comments: [0×0 struct]

Get Incoming Links

This example shows how to get the incoming links for a requirement.

Load a requirement set called myReqSet.

rs = slreq.load("myReqSet");

Find a requirement in the requirement with ID R1.1.

myReq = find(rs,"Type","Requirement","Id","R1.1");

Query incoming links to the requirement.

inLinks = slreq.inLinks(myReq);

Get Outgoing Links

This example shows how to get the outgoing links for a link source.

Load a link set called c5.slmx.

myLinkSet = slreq.load("c5.slx");

Get the link sources from the link set.

allSrcs = sources(myLinkSet);

Get the outgoing links for the first link source.

myLink = slreq.outLinks(allSrcs(1));

Version History

Introduced in R2018a