Difference between revisions of "Technical Team/Use Cases/2.0"

<p>We have several sources to begin pulling for SPDX Use Cases:</p><ol><li>The Pad from earlier conversations collected at <a href="http://spdx.org/wiki/use-cases-collected-20-discussion">Use Cases For SPDX 2.0 Discussion</a></li><li>The old <a href="https://fossbazaar.org/wiki/spdx-use-case-1">SPDX 1.0 Use Cases</a>&nbsp;as well as the <a href="http://spdx.org/system/files/ecosystem.jpg">SDPX 1.0 Use Case Picture</a>.</li></ol><div>&nbsp;</div><div>I'd like to propose that we flesh out use cases here by having a brief summary listed here as a link to a more detailed child page. &nbsp; Note, these use cases should be *<strong>doable</strong>* but in general not *<strong>required</strong>*. &nbsp;Any item listed here that is not a link, should have a child page created for it.</div><div>&nbsp;</div><div><ol><li>Code commits</li><ol><li><a href="http://spdx.org/wiki/committers-provides-spdx-data-code-being-committed">Committer provides SPDX data</a></li><li><a href="http://spdx.org/wiki/contributor-makes-commit-subject-existing-spdx-data-project">Contributor makes commit &nbsp;subject to existing SPDX data of project</a></li><li>Contributor makes commit subject to existing SPDX data of a dual licensed project and selects one license</li><li>Committer annotates source files with SPDX data</li></ol><li>Patches</li><ol><li>Patch provider provides SPDX data for the patch</li><li>Patch provider provides patch subject to existing SPDX data of project</li></ol><li><a href="http://spdx.org/wiki/spdx-20-usecase-upstream-maintainer-providing-spdx-data">Upstream maintainer providing SPDX data</a></li><ol><li><a href="http://spdx.org/wiki/upstream-maintainer-providing-spdx-data-source-archive">Upstream maintainer providing SPDX data in source archive</a></li><li><a href="http://spdx.org/wiki/upstream-maintainer-providing-spdx-data-scm">Upstream maintainer providing SPDX data in SCM</a></li></ol><li>Upstream maintainer consuming another project</li><ol><li>Upstream maintainer including another project by including source</li><li>Upstream maintainer including another project by reference (think maven, possibly linking cases)</li><ol><li>by static reference (the referenced library is included with a redistribution)</li><li>by dynamic reference (express runtime dependency on the external library, but not redistributing it)</li></ol><li>Upstream maintainer pulling individual files out of another project (subsetting)</li></ol><li>Intermediate packager (rpm, deb, etc) passing on and adding to SPDX Data</li><ol><li>Intermediate packager builds source package from upstream source</li><ol><li><a href="http://spdx.org/wiki/intermediate-packager-builds-source-package-upstream-source-provides-spdx-data">Intermediate packager builds source package from upstream source&nbsp;that provides SPDX data</a></li><li>Intermediate packager builds source package from upstream source that does not provide SPDX data</li></ol><li>Intermediate packager builds binary package from upstream source</li><ol><li><a href="http://spdx.org/wiki/intermediate-packager-builds-binary-package-upstream-source-provides-spdx-data">Intermediate packager builds binary package from upstream source that provides SPDX data</a></li><li>Intermediate packager builds binary package from upstream source that does not provides SPDX data</li></ol><li>Intermediate packager adds patches to upstream source&nbsp;</li><ol><li><a href="http://spdx.org/wiki/intermediate-packager-adds-patches-upstream-source-provides-spdx-data">Intermediate packager adds patches to upstream source that provides SPDX data</a></li><li>Intermediate packager adds patches to upstream source that does not provide SPDX data</li></ol><li>Intermediate packager adds someone else's patches to upstream source</li><ol><li><a href="http://spdx.org/wiki/intermediate-packager-adds-someone-elses-patches-upstream-source-provides-spdx-data">Intermediate packager adds someone else's patches to upstream source that provides SPDX data</a></li><li>Intermediate packager adds someone else's patches to upstream source that does not provide SPDX data</li></ol><li>Intermediate packager subsetting upstream source</li><ol><li><a href="http://spdx.org/wiki/intermediate-packager-subsetting-upstream-source-provides-spdx-data">Intermediate packager subsetting upstream source that provides SPDX data</a></li><li>Intermediate packager subsetting upstream source that does not provide SPDX data</li></ol></ol><li>Yocto [Jack Manbeck]</li><li>Aggregator aggregating many 'copyrightable items' for redistribution</li><ol><li>Linux Distros [Kate Stewart]</li><li>Embedded Images</li><li>SDKs</li><li><a href="http://spdx.org/wiki/spdx-20-usecase-reference-implementations">Reference implementations </a>[Jack Manbeck]</li><li>Eclipse/OSGI distributions</li><li><a href="http://spdx.org/wiki/spdx-20-usecase-application-which-ships-documentation-media-software">Application which ships with documentation + &nbsp;media + software</a> [Jack Manbeck]</li><li><a title="Use case details" href="http://spdx.org/wiki/application-which-ships-contrib-libraries">Application which ships with a contrib libraries</a>&nbsp;[Gary O'Neall]</li><li><a title="Use case details" href="http://spdx.org/wiki/application-which-ships-development-tools">Application which ships with development tools</a> [Gary O'Neall]</li></ol><li>Aggregators aggregating other aggergations for redistribution</li><li>SPDX data indicating subset of the source that made it into a particular binary or binary package</li><li>Asserting corrections to SPDX data provided by others further upstream</li><li>Consumers receiving SPDX data</li><li>Signoff/multiple signoff on SPDX data</li><ol><li>Contracts with multiple parties requiring signoff by all [Kate Stewart]</li></ol><li>Auditor scenario: given big pile of 'copyrightable items', creating Bill of Materials [Peter Williams]</li><li>Sanity-checking Bill of Material</li><ol><li>outbound: validate that SPDX goes hand in hand with what's being shipped [Kirsten Newcomer]</li><li>inbound: &nbsp;validate that SPDX goes hand in hand with what's being brought in&nbsp;</li></ol><li>Java complications [Richard Fontana]</li></ol><div>&nbsp;</div><div><div><h2>Cross-cutting concerns:</h2></div><div><ol><li>Provenance (the need to optionally use signing to validate who said what)</li><li>Handling staleness of data</li><li>Expressing applicable licensing as a function of Usage [Bill Schineller]</li><li>Permissive licensed thing becomes restrictive as function of packaging (e.g. BSD file included in GPL becomes GPL)</li></ol></div></div><div>&nbsp;</div></div><div><h2>Themes:</h2></div><div>&nbsp;</div><div>Looking at these Use Cases, there are some underlying themes:</div><div><ol><li>Root of data (closer to upstream the better)</li><li>Subsetting of copyrightable things (and their SPDX data) (<strong>Note</strong>: Subsets of copyrightable things are usually also copyrightable things)</li><li>Aggregation of copyrightable things (and their SPDX data) (<strong>Note</strong>: Aggregations of copyrightable things are usually also copyrightable things).</li></ol></div><div>&nbsp;</div><div>&nbsp;</div><p>&nbsp;</p>