The presentation by Erik Hatcher discusses rapid prototyping with Solr to make data searchable, highlighting the importance of adjusting Solr's schema and showcasing data in a flexible user interface. It emphasizes demonstrating Solr's capabilities, provides various methods for data import, and covers techniques for customizing request handlers and UI treatments. Additionally, it outlines next steps for refining and integrating the Solr application before deployment.

1. 1
Rapid Prototyping
with
Solr
presented by
Erik Hatcher, Technical Staff, Lucid Imagination
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2. Abstract
Got data? Let's make it searchable! This interactive
presentation will demonstrate getting documents into
Solr quickly, provide some tips in adjusting Solr's
schema to match your needs better, and finally showcase
your data in a flexible search user interface. We'll
see how to rapidly leverage faceting, highlighting,
spell checking, and debugging. Even after all that,
there will be enough time left to outline the next
steps in developing your search application and taking
it to production.
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3. Why prototype?
 Demonstrate Solr can handle your needs
 Buy-in
 "Prototyping: faster than teaching a 9-year-old
Ju-Jitsu"
 It's quick, easy, AND FUN!
 The User Interface is the app
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4. Got Data?
 Files?
 Solr Cell
 Databases?
 Data Import Handler
 Feeds (Atom/RSS/XML)?
 Data Import Handler
 3rd party repositories?
 Lucene Connectors Framework
 custom indexing scripts using a Solr API
 CSV!!!
 CSV upload handler
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5. UI
 Solritas (VelocityResponseWriter)
 http://localhost:8983/solr/itas
 Documentation:
 http://wiki.apache.org/solr/VelocityResponseWriter
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6. LucidWorks for Solr
 great starting point
 built-in and pre-configured:
 Clustering
 Carrot2
 Search UI
 Solritas (VelocityResponseWriter)
 Server includes root context, handy for serving static files
 Better stemming
 KStem
 Tomcat, optionally
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7. ~/LucidWorks: start.sh
2010-05-21 08:53:49.595::INFO: Logging to STDERR via
org.mortbay.log.StdErrLog
2010-05-21 08:53:49.764::INFO: jetty-6.1.3
May 21, 2010 8:53:50 AM org.apache.solr.core.SolrResourceLoader
locateSolrHome
INFO: JNDI not configured for solr (NoInitialContextEx)
May 21, 2010 8:53:50 AM org.apache.solr.core.SolrResourceLoader
locateSolrHome
INFO: using system property solr.solr.home: /Users/erikhatcher/
LucidWorks/lucidworks/jetty/../solr
May 21, 2010 8:53:50 AM org.apache.solr.core.SolrResourceLoader <init>
INFO: Solr home set to '/Users/erikhatcher/LucidWorks/lucidworks/
jetty/../solr/'
.
.
.
May 21, 2010 8:53:51 AM org.apache.solr.core.SolrCore registerSearcher
INFO: [] Registered new searcher Searcher@21fb3211 main
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8. Your Data
First Name,Last Name,Company,Title,Work Country
Erik,Hatcher,Lucid Imagination,"Member, Technical Staff", USA
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.
.
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9. First try
curl "http://localhost:8983/solr/update/csv?stream.file=EuroCon2010.csv"
undefined field First Name
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10. Schema: dynamic field flexibility
<dynamicField name="*_s" type="string" indexed="true" stored="true"/>
<dynamicField name="*_t" type="text" indexed="true" stored="true"/>
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11. Mapping to dynamic fields
curl "http://localhost:8983/solr/update/csv?
stream.file=EuroCon2010.csv&fieldnames=first_s,last_s,company_s,title_t,
country_s&header=true"
Document [null] missing required field: id
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12. Identifying uniqueKey, or not
curl "http://localhost:8983/solr/update/csv?
stream.file=EuroCon2010.csv&fieldnames=first_s, id,company_s,title_t,co
untry_s&header=true"
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader"><int name="status">0</int><int
name="QTime">40</int></lst>
</response>
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13. http://localhost:8983/solr/itas
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14. Schema tinkering
 Removed all example field definitions
 Uncomment and adjust catch-all dynamic field:
 <dynamicField name="*" type="string" multiValued="false"/>
 Ensure uniqueKey is appropriate
 Unusual in this data example:
 <!-- <uniqueKey>id</uniqueKey> -->
 Make every document/field fully searchable!
 <copyField source="*" dest="text"/>
 Then restart!
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15. Issues with no uniqueKey
 Remove from solrconfig.xml references to:
 clustering component
 query elevation component
 data import handler
 Then restart!
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16. Reindexing with cleaner field names
# Delete all documents
curl "http://localhost:8983/solr/update?stream.body=%3Cdelete%3E%3Cquery
%3E*:*%3C/query%3E%3C/delete%3E&commit=true"
# Index your data
curl "http://localhost:8983/solr/update/csv?
commit=true&stream.file=EuroCon2010.csv&fieldnames= first,last,
company,title,country&header=true"
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17. Faceting
http://localhost:8983/solr/itas?facet.field=country
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18. country normalization
http://localhost:8983/solr/update/csv?
commit=true&stream.file=EuroCon2010.csv&fieldnames=first,last,company,ti
f.country.map=Great
tle,country&header=true&
+Britain:United+Kingdom
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19. UI treatments
 Customize request handler mappings
 Edit templates
 hit display
 header/footer
 style
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20. Customize request handlers
<requestHandler name="/browse" class="solr.SearchHandler">
<lst name="defaults">
<str name="wt">velocity</str>
<str name="v.template">browse</str>
<str name="v.layout">layout</str>
<str name="rows">10</str>
<str name="fl">*,score</str>
<str name="defType">lucene</str>
<str name="q">*:*</str>
<str name="debugQuery">true</str>
<str name="hl">on</str>
<str name="hl.fl">title</str>
<str name="hl.fragsize">0</str>
<str name="hl.alternateField">title</str>
<str name="facet">on</str>
<str name="facet.mincount">1</str>
<str name="facet.missing">true</str>
</lst>
<lst name="appends">
<str name="facet.field">country</str>
</lst>
</requestHandler> 20
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21. hit.vm
<div class="result-document">
<p>$doc.getFieldValue('first') $doc.getFieldValue('last')</p>
<p>$!doc.getFieldValue('title'), $!doc.getFieldValue('company')</p>
<p>$!doc.getFieldValue('country')</p>
</div>
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22. Voila!
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23. Adding bells and whistles
 JQuery
 <script type="text/javascript" src="/solr/admin/
jquery-1.2.3.min.js"></script>
 Let's add a tree map
 <script type="text/javascript" src="/scripts/treemap.js"></script>
 http://plugins.jquery.com/project/Treemap
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24. tree map table
<script type="text/javascript">
function onLoad() {
jQuery("#treemap-country").treemap(640,480, {});
}
</script>
----------------------------
<body onload="onLoad();">
----------------------------
<table id="treemap-country">
#foreach($facet in $response.getFacetField('country').values)
<tr>
<td>#if($facet.name)
$esc.html($facet.name)#else&lt;Unspecified&gt;#end</td>
<td>$facet.count</td>
<td>#if($facet.name)$esc.html($facet.name)#{else}Unspecified#end</
td>
</tr>
#end
</table>
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25. Tree map
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26. Ajax fun: giveaways
 Add "static" templated page
 JQuery Ajax request
 snippet templated output
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27. "static" Solritas page
solrconfig.xml
<requestHandler name="/giveaways" class="solr.DumpRequestHandler">
<lst name="defaults">
<str name="wt">velocity</str>
<str name="v.template">giveaways</str>
<str name="v.layout">layout</str>
</lst>
</requestHandler>
giveaways.vm
<input type="button" value="Pick a Winner" onClick="javascript:$
('#winner').load('/solr/generate_winner?sort=random_' + new
Date().getTime() + '+asc');">
<h2>And the winner is...</h2>
<center><font size="20"><div id="winner"></div></font></center>
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28. fragment template
solrconfig.xml
<requestHandler name="/generate_winner" class="solr.SearchHandler">
<!-- sort=random_... required -->
<lst name="defaults">
<str name="wt">velocity</str>
<str name="v.template">winner</str>
<str name="rows">1</str>
<str name="fl">first,last</str>
<str name="defType">lucene</str>
<str name="q">*:* -company:"Lucid Imagination" -company:"Stone Circle
Productions"</str>
</lst>
</requestHandler>
winner.vm
#set($winner=$response.results.get(0))
$winner.getFieldValue('first') $winner.getFieldValue('last')
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29. And the winner is...
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30. Prototyping tools
 CSV update handler
 Schema Browser
 Solritas
 Solr Explorer
 https://issues.apache.org/jira/browse/SOLR-1163
 Solr Flare
 http://wiki.apache.org/solr/Flare
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31. Refine, iterate, integrate
 What's next?
 script full & delta indexing processes
 adjust schema
 define fields, field types, analysis
 tweak configuration
 caches, indexing parameters
 deploy to staging/production environments
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32. Test
 Performance
 Scalability
 Relevance
 Automate all of the above, start baselines and avoid
regressions
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