"SRU 2.0" refers to a suite of specficiations that has been approved as an OASIS Standard, referred to as "searchRetrieve 1.0". See searchRetrieve Version 1.0 OASIS Standard published .
"SRU 2.0" also refers to version 2.0 of SRU, which extends SRU 1.2. The SRU 2.0 Specification is one of several specifications in the OASIS Suite.
The published standard is available as eight documents, listed in the following table.
SRU 2.0 XML Schema and WSDL Files
The following XML files are included in the OASIS searchRetrieve 1.0 package.
||The default format for an SRU response.
||The format for presentation of a diagnostic within an SRU response.
||Explain for SRU 2.0.
||The format for presentation of faceted results within an SRU response. See section 8 of SRU 2.0.
||search result analysis
||The format for presentation of search result analysis within an SRU response. See section 9 of SRU 2.0.
XCQL is CQL expressed in XML, used to echo a query in a search/retrieve response. It is not used in search/retrieve requests.