Over-riding DRI Templates using xsl in DSpace - xslt

Question

I'm working with DSpace 4.2 xmlui Mirage theme. I want to hide the Communities and Collections from the search results page.
By inspecting the DRI document of the page I found that the Communities and Collections results are added as:
<list id="aspect.discovery.SimpleSearch.list.comm-coll-result-list" n="comm-coll-result-list">
So I tried over-riding the template in the xsl file of the theme.
<xsl:template match="dri:list[#id='aspect.discovery.SimpleSearch.list.comm-coll-result-list']">
<!-- Over ride / remove the recent submissions box-->
</xsl:template>
But no change is reflected in the page. Am I doing something wrong here? I was able to hide the default search box in a similar manner by over-riding the template generating it's corresponding div.I noticed that the list item I want to hide is contained within another div. Is is not possible to over-ride a DRI element unless its tag is div?

Answer 1

You can also add a default filter query in your [dspace]/config/spring/api/discovery.xml.
Default filter queries are applied on all search operations & sidebarfacet clicks. One useful application of default filter queries is ensuring that all returned results are items. As a result, subcommunities and collections that are returned as results of the search operation, are filtered out.
Relevant lines here, note that this is disabled by default. Uncomment to make this work.
<property name="defaultFilterQueries">
<list>
<value>search.resourcetype:2</value>
</list>
Hope this help.
UPDATE
Copy the:
<property name="defaultFilterQueries">
<list>
<value>search.resourcetype:2</value>
</list>
<property>
in the <bean id="homepageConfiguration" class="org.dspace.discovery.configuration.DiscoveryConfiguration" scope="prototype"> because it overrides the defaultConfiguration as stated in this comment.

Answer 2

The collection and community list results are displayed by the following XSLT: https://github.com/DSpace/DSpace/blob/master/dspace-xmlui/src/main/webapp/themes/dri2xhtml/structural.xsl#L3616-L3635
To change the display via XSLT, try constructing your own template code.
<xsl:template name="collectionSummaryList">
<xsl:param name="handle"/>
<xsl:param name="externalMetadataUrl"/>
<xsl:variable name="metsDoc" select="document($externalMetadataUrl)"/>
...
</xsl:template>
If you completely suppress these results from your display, it will likely make your pagination counts unreliable. It might make more sense to suppress the community/collection results from the SOLR search results.