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Adding resource-fragment flag to link #1527

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Nov 1, 2022
Merged

Adding resource-fragment flag to link #1527

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9 changes: 9 additions & 0 deletions src/metaschema/oscal_metadata_metaschema.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -776,6 +776,10 @@
<p>The <code>media-type</code> provides a hint about the content model of the referenced resource. A valid entry from the <a href="https://www.iana.org/assignments/media-types/media-types.xhtml">IANA Media Types registry</a> SHOULD be used.</p>
</remarks>
</flag>
<define-flag name="resource-fragment" as-type="string">
<formal-name>Resource Fragment</formal-name>
<description>In case where the <code>href</code> points to a <code>back-matter/resource</code>, this value will indicate the URI <a href="https://www.rfc-editor.org/rfc/rfc3986#section-3.5">fragment</a> to append to any <code>rlink</code> associated with the resource. This value MUST be <a href="https://www.rfc-editor.org/rfc/rfc3986#section-2.1">URI encoded</a>.</description>
</define-flag>
<model>
<define-field name="text" as-type="markup-line">
<formal-name>Link Text</formal-name>
Expand All @@ -794,6 +798,11 @@
<key-field target="@href" pattern="#(.*)"/>
</index-has-key>
<matches target=".[@rel=('reference') and not(starts-with(@href,'#'))]/@href" datatype="uri"/>
<matches target="@resource-fragment" regex="(?:[0-9a-zA-Z-._~/?!$&amp;'()*+,;=:@]|%[0-9A-F][0-9A-F])+">
<remarks>
<p>This pattern is based on the fragment Augmented Backus-Naur form (ABNF) syntax provided in [RFC3986 section 3.5](https://www.rfc-editor.org/rfc/rfc3986#section-3.5). Uppercase alpha hex digits are required, which is the preferred normalized form defined in RFC3986.</p>
</remarks>
</matches>
</constraint>
<remarks>
<p>To provide a cryptographic hash for a remote target resource, a local reference to a back matter <code>resource</code> is needed. The resource allows one or more hash values to be provided using the <code>rlink/hash</code> object.</p>
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