1. OCLC Online Computer Library Center SRW & DSpace Ralph LeVan OCLC Research

2. DSpace Uses Lucene Apache Lucene http://lucene.apache.org DSpace implementation uses a simple indexing scheme for DC records No browsable indexes

3. OCLC Open Source SRW Built on Apache Axis SRW Protocol Engine SRWDatabase Interface for local databases –Currently has support for Pears and DSpace

4. SRWLuceneDatabase Only implements enough support for Lucene to support DSpace Produces an Explain record from data in a properties file

5. DSpace.SRWDatabase.props xmlSchemas=dc dc=defaultConverter dc.identifier=info:srw/schema/1/dc-v1.1 dc.location=http://www.loc.gov/zing/srw/dc-schema.xsd dc.title=dc: Dublin Core Elements databaseInfo.title=DSpace Database databaseInfo.description=Records stored in our local DSpace Repository databaseInfo.contact=Ralph LeVan (mailto:levan@oclc.org) indexSynonym.au=author indexSynonym.dc.title=title

6. DSpace.SRWDatabase.props contextSet.cql=info:srw/cql-context-set/1/cql-v1.1 contextSet.dc=info:srw/cql-context-set/1/dc-v1.1 # The default access point and result-set references qualifier.cql.serverChoice = 1=1016 qualifier.cql.resultSetId = @set # Dublin Core access points qualifier.dc.title = 1=4 qualifier.au = 1=1003

7. CQL Searches Converted Query parsed using Mike Taylors parser Traverse the tree and generate a Lucene query –Map cql indexes to Lucene indexes –Only supports AND, OR and NOT –Only supports keyword searching (relation =)

8. DSpace Records Fetched Lucene only stores handles for DSpace records Handles used to get records from DSpace DSpace records converted to DC records

9. SRW DSpace Example http://repository.ust.hk/SRW/search/D Spacehttp://repository.ust.hk/SRW/search/D Space? query=dc.creator+%3D+%22smith%22 &version=1.1 &operation=searchRetrieve &recordSchema=info%3Asrw%2Fschem a%2F1%2Fdc-v1.1 &maximumRecords=1&startRecord=1 &resultSetTTL=0