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<h2> Dublin Core Metadata </h2>
<table>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Title"> Title </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> the standard Zope 'title' attribute; we should look
at making it mandatory for all PortalContent derivatives.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Creator"> Creator </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> where possible, this should be one or more full
names, of either persons or organizations. The current
implementation finds the first user in the list returned
by 'get_local_roles' who has the 'Owner' role; userids are
not considered appropriate for this field by the DCI.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Subject"> Subject </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> this is supposed to be drawn from a controlled
list of keywords (e.g., selected from a multi-select list
used across the whole site)
</td>.
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Description"> Description </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> a short summary, an abstract, or a
table-of-contents are all considered acceptable. We might
look at making this required, as well, at least for some
kinds of content.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Publisher"> Publisher </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> a site-wide property, should be done through
acquisition (do I smell a 'portal_metadata' tool about to
appear?) Again, this is supposed to be a formal name.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Contributor"> Contributor </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> used to convey others besides the Creator who
have contributed to the document (the current implementation
aliases 'Creator', which is not what DCI intends)
</td>.
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Date"> Date </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> this one has modifiers, of which the approved set is:
'Created', 'Valid', 'Available', 'Issued', and 'Modified'.
I propose extending the interface to include CreationDate(),
EffectiveDate(), ExpirationDate(), and ModificationDate().
The current Date() could just return the CreationDate(), while
the DCI 'Valid' and 'Available' would be ranges derived from
EffectiveDate() and ExpirationDate(
</td>).
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Type"> Type </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> like the Zope 'meta_type', this is the main conceptual
classification; 'meta_type' is often spelled identically to
the class, which makes it less appropriate for the DCI usage.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Format"> Format </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> the kind of physical representation, e.g., 'text/html'
</td>.
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Identifier"> Identifier </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> should be the fully-qualified URL of the document
(the current implementation returns the object's id, which is
only required to be unique within its container)
</td>.
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Language"> Language </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> 'en-us', 'pt-br', 'de', etc. Should be set at
creation, with an appropriate default (and a picklist of
values)
</td>.
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Source"> Source </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> the original from which a piece of content is
derived. I'd like to ignore this one.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Relation"> Relation </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> more relationships to other documents. Again,
I'd like to ignore it (ZopeStudio and other such tools need
this, however, to build site maps)
</td>.
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Coverage"> Coverage </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> geographic/chronological/jurisdictional scope.
Again, ignore.
</td>
</tr>
<tr>
<td colspan="2" class="ListName"> <strong> <a name="Rights"> Rights </a>
</strong> </td>
</tr>
<tr>
<td> </td>
<td class="ListDefinition"> copyright and other IP information related to the
document. Most portals should care about this: witness
the brouhaha on Slashdot over the compilation of the
Hellmouth postings into a book.
</td>
</tr>
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