Hi,
we have taken a different approach. In our case, we only wanted this kind of
functionality in one theme (of the three we use), so editing the original Java
code was not an option.
Instead, I wrote a little utility that is called from within that one theme. It
uses the ResourcePolicy class to find if there is a resource policy with an
embargo for this bitstream. If there is and the start date is after the current
date, the utility returns the start date. Otherwise it returns "open" (or
"closed" if it encountered a problem).
If anyone is interested, I can submit the code as a pull request.
Regards,
Marina Muilwijk
Op 1 okt. 2013, om 16:09 heeft Terry Brady het volgende geschreven:
Ivan,
Thank you for the encouragement to take a look at the java code. I think I
found a simple solution which I will submit as a pull request.
The XSLT code changes that take advantage of this data are a bit messy, and I
am not certain that they would be applicable for others.
1, Set <xsl:variable name="AUTH"
select="/dri:document/dri:meta/dri:userMeta/@authenticated"/>
2. Modify externalMetadataURL
<xsl:variable name="externalMetadataURL"
select="concat('cocoon://metadata/handle/',$handle,'/mets.xml?rightsMDTypes=METSRIGHTS')"/>
3. Query the mets rights. My logic assumes that a thumbnail should be
displayed (1) if the item is publicly available OR (2) the item is available to
my registered users AND the user is logged in. My hope is that this will
significantly reduce the occurrences in which a user is redirected to a
thumbnail on login.
<xsl:when
test="$context/mets:fileSec/mets:fileGrp[@USE='THUMBNAIL']/
mets:file[@GROUPID=current()/@GROUPID]">
<xsl:variable name="authid"
select="$context/mets:fileSec/mets:fileGrp[@USE='THUMBNAIL']/mets:file/@ADMID"/>
<xsl:variable name="thumbauth"
select="//mets:rightsMD[@ID=$authid]"/>
<xsl:variable name="angrec"
select="$thumbauth//metsrights:Context[@CONTEXTCLASS='MANAGED
GRP'][metsrights:UserName[text()=$GUCOMM]]"/>
<xsl:variable name="pubrec"
select="$thumbauth//metsrights:Context[@CONTEXTCLASS='GENERAL PUBLIC']"/>
<xsl:choose>
<xsl:when test="($angrec and $AUTH='yes') or ($pubrec)">
<a class="image-link">
<xsl:attribute name="href">
<xsl:value-of
select="mets:FLocat[@LOCTYPE='URL']/@xlink:href"/>
</xsl:attribute>
<img alt="Thumbnail">
<xsl:attribute name="src">
<xsl:value-of
select="$context/mets:fileSec/mets:fileGrp[@USE='THUMBNAIL']/
mets:file[@GROUPID=current()/@GROUPID]/mets:FLocat[@LOCTYPE='URL']/@xlink:href"/>
</xsl:attribute>
</img>
</a>
</xsl:when>
<xsl:otherwise>--</xsl:otherwise>
</xsl:choose>
</xsl:when>
Thank you again for your help!
Terry
On Mon, Sep 30, 2013 at 6:15 PM, helix84
<heli...@centrum.sk<mailto:heli...@centrum.sk>> wrote:
Hi Terry,
you're right, that information is not there. Arguably, it should, since we have
all the other permissions information there. The reason it isn't is that simple
embargo (embargo expressed as time-based resource policies) was a new feature
in 3.0. One more similar omission is that this information is missing from the
AIP export (because it requires changes to the AIP file format). I don't think
@mire plans to work on this in the little time that is left for 4.0, but if you
would add it, I'd support accepting it to DSpace. The contribution deadline is
October 7 - a pull request would have to be opened by then.
To add it, you would have to do some modifications to Java code. They seem
rather simple. Take a look at this method which generates the relevant part of
the METS file [1]. Also take a look at the signature of the ResourcePolicy
class here [2], especially the getStartDate() and getEndDate() methods.
[1]
https://github.com/DSpace/DSpace/blob/dspace-3.2/dspace-api/src/main/java/org/dspace/content/crosswalk/METSRightsCrosswalk.java#L249
[2] http://demo.dspace.org/javadocs/3/apidocs/
Regards,
~~helix84
Compulsory reading: DSpace Mailing List Etiquette
https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
--
Terry Brady
Applications Programmer Analyst
Lauinger Information Technology
202-687-7053
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