Solr's generic XML structured data representation
by Matt Mitchell, Kranti Parisa, Eric Pugh, David Smiley
Apache Solr Enterprise Search Server - Third Edition
- Apache Solr Enterprise Search ServerThird Edition
- Table of Contents
- Apache Solr Enterprise Search Server Third Edition
- Credits
- About the Authors
- About the Reviewers
- www.PacktPub.com
- Preface
- 1. Quick Starting Solr
- 2. Schema Design
- Is Solr schemaless?
- MusicBrainz.org
- One combined index or separate indices
- Schema design
- The schema.xml file
- Summary
- 3. Text Analysis
- 4. Indexing Data
- Communicating with Solr
- Solr's Update-XML format
- Commit, optimize, and rollback the transaction log
- Atomic updates and optimistic concurrency
- Sending CSV-formatted data to Solr
- The DataImportHandler framework
- Indexing documents with Solr Cell
- Update request processors
- Summary
- 5. Searching
- Your first search – a walk-through
- Solr's generic XML structured data representation
- Solr's XML response format
- Understanding request handlers
- Query parameters
- Query parsers and local-params
- Query syntax (the lucene query parser)
- The DisMax query parser – part 1
- Filtering
- Sorting
- Joining
- Spatial search
- Summary
- 6. Search Relevancy
- 7. Faceting
- 8. Search Components
- About components
- The highlight component
- The SpellCheck component
- Query complete/suggest
- The QueryElevation component
- The MoreLikeThis component
- The Stats component
- The Clustering component
- Collapsing and expanding
- The TermVector component
- Summary
- 9. Integrating Solr
- Working with the included examples
- Solritas – the integrated search UI
- SolrJ – Solr's Java client API
- Using JavaScript/AJAX with Solr
- Using XSLT to transform XML search results
- Accessing Solr from PHP applications
- Ruby on Rails integrations
- Nutch for crawling web pages
- Solr and Hadoop
- ManifoldCF – a connector framework
- Document-level security
- Summary
- 10. Scaling Solr
- Tuning complex systems is hard
- Use SolrMeter to test Solr performance
- Optimizing a single Solr server – scale up
- Configuring Solr for near real-time search
- Use SolrCloud to go big – scale wide
- Summary
- 11. Deployment
- A. Quick Reference
- Index
Solr has its own generic XML representation of typed and named data structures. This XML is used for most of the response XML, and it is also used in parts of solconfig.xml. The XML elements involved in this partial XML schema are as follows:
<lst>: This is a named list. Each of its child nodes should have anameattribute. The<doc>element is in effect equivalent tolstbut is used only for result documents.<arr>: This is an array of values. Each of its child nodes is a member of this array.
The following elements represent simple values with the text of the element storing the value. The numeric ranges match that of the Java language. They will have a name attribute if they are underneath lst (or doc), but not otherwise.
<str>: A string of text<int>: An integer in the range -2^31 to 2^31-1<long>: An integer in the range -2^63 to 2^63-1<float>: A floating point number in the range 1.4e–45 to about 3.4e38<double>: A floating point number in the range 4.9e–324 to about 1.8e308<bool>: A Boolean value represented astrueorfalse; when supplying values in a configuration file:on,off,yes, andnoare also supported<date>: A date in the ISO-8601 format such as:1965-11-30T05:00:00Z; times are always in the UTC time zone represented byZ
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