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Configuring Lucene Search Indexes
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DSpace also provide a more advanced module named Discovery that is based on SOLR and provide additional features as faceting, highlighting, etc. See Discovery This paragraph is related to the "traditional" DSpace lucene based search engine and not apply to Discovery |
Search indexes can be configured and customized easily in the dspace.cfg file. This allows institutions to choose which DSpace metadata fields are indexed by Lucene.
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While the indexes are created, this only affects the search results and has no effect on the search components of the user interface. One will need to customize the user interface to reflect the changes, for example, to add the a new search category to the Advanced Search.
In the above examples, notice the asterisk (*). The metadata field (at least for Dublin Core) is made up of the "element" and the "qualifier". The asterisk is used as the "wildcard". So, for example, keyword.dc.subject.* will index all subjects regardless if the term resides in a qualified field. (subject versus subject.lcsh). One could customize the search and only index LCSH (Library of Congress Subject Headings) with the following entry keyword:dc.subject.lcsh instead of keyword:dc.subject.*
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Although DSIndexer automatically builds a separate index for the authority keys of any index that contains authority-controlled metadata fields, the "Advanced Search" UIs does not allow direct access to it. Perhaps it will be added in the future. Fortunately, the OpenSearch API lets you submit a query directly to the Lucene search engine, and this may include the authority-controlled indexes.
Customize the advanced search form
As the previous configuration apply only to the indexing and querying phase one will need to customize the user interface to reflect the changes, for example, to add the a new search category to the Advanced Search.
XML UI requires manual coding of the involved templates instead the JSP UI provides specific configuration to set the index to show in the advanced search dropdown. Below are listed the configuration parameters
Property: |
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Example Value | jspui.search.index.display.1 = ANY |
Informational Note: | Set the N-value of the index dropdown in the advanced search form. The value must match one of the defined index |
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