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Transcript 
How To: SRU
Ralph LeVan
Senior Research Scientist, OCLC
[email protected]
WorldCat Hackathon
New York Public LIbrary
7 November 2008
The Basics
• REST-ful API for Search and Retrieve
• CQL – A rich, standardized query grammar
• Self-describing service through Explain records
REST-ful API for Search and
Retrieve
• Base URL: http://worldcat.org/identities/search/Identities
• Querystring: query=local.Name+all+%22ralph+levan%22
• Important Optional Parms:
• startRecord
• maximumRecords
• recordSchema
REST-ful API for Search and
Retrieve
• Untrustworthy Optional Parms:
• sortKeys
REST-ful API for Search and
Retrieve
• Amusing Parms:
• recordPacking
REST-ful API for Search and
Retrieve
• Omittable Mandatory Parms:
• version
• operation
CQL
• Standard Boolean operations
• Search Terms: [Index relation] quotedString
• query=dog
• query=cql.any exact “moby dick”
• Indexes defined by server
• Standard relations:
• exact, =, all, any
searchRetrieveResponse
<?xml version="1.0" ?>
<?xml-stylesheet type="text/xsl"
href="/identities/NameFinderResponse.xsl"?>
<searchRetrieveResponse
xmlns="http://www.loc.gov/zing/srw/">
searchRetrieveResponse elements
<version>1.1</version>
<numberOfRecords>3</numberOfRecords>
<resultSetId>6dsxzt</resultSetId>
<resultSetIdleTime>300</resultSetIdleTime>
<records><record></record>...</records>
<echoedSearchRetrieveRequest>...
<diagnostics>...
<extraResponseData>...
record elements
<recordSchema>
info:srw/schema/1/Identities</recordSchema>
<recordPacking>xml</recordPacking>
<recordData>...
<recordPosition>1</recordPosition>
Explain
<explainResponse xmlns="http://www.loc.gov/zing/srw/">
<version>1.1</version>
<record>
<recordSchema>
http://explain.z3950.org/dtd/2.0/</recordSchema>
<recordPacking>xml</recordPacking>
<SRW:recordData>
Explain Record
<explain authoritative="true"
xmlns="http://explain.z3950.org/dtd/2.0/">
<serverInfo protocol="SRW/U">…
<databaseInfo>…
<indexInfo>…
<schemaInfo>…
<configInfo>…
indexInfo
<set
identifier="http://staff.oclc.org/~levan/localContextSets/Identities"
name="local"/>
<index>
<title>local.BirthDate</title>
<map>
<name set="local">BirthDate</name>
</map>
<configInfo>
<supports type='relation'>any</supports>
</configInfo>
</index>
schemaInfo
<schema sort="false" retrieve="true" name="Identities"
identifier="info:srw/schema/1/Identities”
location="http://www.oclc.org/standards/Identities/schema/I
dentities.xsd">
<title>Identities records in their native format</title>
</schema>
configInfo
<default type="maximumRecords">250</default>
<default type="numberOfRecords">10</default>
<default type="retrieveSchema">
info:srw/schema/1/Identities</default>
Links
http://www.loc.gov/standards/sru/
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