This document provides an overview of using Apache Solr, including installing Solr with Tomcat 7, configuring schemas and fields, querying and faceting data, integrating Solr with Symfony, and comparing Solr to Elasticsearch. It outlines steps for installation, defines key components like schemas and request handlers, and demonstrates features such as querying, faceting, copying fields, and data import from a database.

1. First steps with Solr 4.7
Achraf KRID

2. Plan
•Definition
•Installation (with tomcat 7)
•Querying, faceting
•Indexation
•Configuration
•Symfony Integration
•Comparaison

3. Solr ?
SolrTM is the popular, blazing fast open source enterprise search platform from
the Apache LuceneTM project. Its major features include powerful full-text
search, hit highlighting, faceted search, near real-time indexing, dynamic
clustering, database integration, rich document (e.g., Word, PDF) handling, and
geospatial search.

4. Install Tomcat 7 + Solr 4.7
● Sudo apt-get install tomcat7 tomcat7-admin
● /etc/tomcat7/tomcat-users.xml
● http://localhost:8080/manager/html
● curl http://archive.apache.org/dist/lucene/solr/4.7.2/solr-4.7.2.tgz | tar xvz
● cp ~/solr-4.7.2/example/lib/ext/* /usr/share/tomcat7/lib/
● cp ~/solr-4.7.2/dist/solr-4.7.2.war /var/lib/tomcat7/webapps/solr.war
● cp -R ~/solr-4.6.1/example/solr /var/lib/tomcat
● chown -R tomcat7:tomcat7 /var/lib/tomcat7/solr
<tomcat-users>
<role rolename="manager-gui"/>
<user username="root" password="root" roles="manager-gui,admin-gui"/>
</tomcat-users>

5. Querying Data
java -jar start.jar
java -jar post.jar *.xml
http://solr/select?q=electronics
http://solr/select?q=electronics&sort=price+desc
http://solr/select?q=electronics&rows=50&start=50
http://solr/select?q=electronics&fl=name+price
http://solr/select?q=electronics&fq=inStock:true

6. Facets
&facet=true&facet.field=cat&facet.field=inStock
&facet.query=price:[0 TO 10]&facet.query=price:[10 TO *]

7. Schema.xml
●
01:<?xml version="1.0" encoding="UTF-8" ?>
●
02:<schema name="example" version="1.1">
●
03: <types>
●
04: <fieldType name="string" class="solr.StrField" sortMissingLast="true" omitNorms="true"/>
●
05: </types>
●
06:
●
07:
●
08: <fields>
●
09: <field name="id" type="string" indexed="true" stored="true" required="true" />
●
10: <field name="category" type="string" indexed="true" stored="true" multiValued="true" omitNorms="true"/>
●
11: <field name="size" type="string" indexed="true" stored="true"/>
●
12: <field name="text" type="string" indexed="true" stored="false" multiValued="true"/>
●
13: </fields>
●
14:
●
15: <uniqueKey>id</uniqueKey>
●
16: <defaultSearchField>text</defaultSearchField>
●
17: <solrQueryParser defaultOperator="AND"/>
●
18:
●
19: <copyField source="id" dest="text"/>
●
20: <copyField source="category" dest="text"/>
●
21: <copyField source="size" dest="text"/>
●
22:
●
23:</schema>
Where You Describe Your Data

8. Schema.xml
●<field> Describes How You Deal With Specific Named Fields
●<dynamicField> Describes How To Deal With Fields That Match A Glob
(Unless There Is A Specific <field> For Them)
●<copyField> Describes How To Construct Fields From Other Fields
<field name="title" type="text" stored=”false” />
<dynamicField name="price*" type="sfloat" indexed="true" />
<copyField source="*" dest="catchall" />

9. Schema.xml
Analyzer
<fieldType name="text_greek" class="solr.TextField">
<analyzer class="org.apache.lucene.analysis.el.GreekAnalyzer"/>
</fieldType>

10. Schema.xml
Tokenizers : A Tokenizer splits a stream of characters (from each individual
field value) into a series of tokens.There can be only one Tokenizer in each
Analyzer.
Token Filters :Tokens produced by the Tokenizer are passed through a series
of Token Filters that add, change, or remove tokens. The field is then indexed by
the resulting token stream.
<analyzer type="index">
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt" enablePositionIncrements="true" />
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>

11. AnalysisTool: Output

12. Solrconfig.xml
solrconfig.xml is where you configure options for how this Solr instance should
behave.

13. Solrconfig.xml
 DataImportHandler
● Create lib/ directory in /var/lib/tomcat/solr
● Add the data import handler jars to lib/ :
cp ~/solr-4.7.2/dist/solr-dataimporthandler-*.jar /var/lib/tomcat7/solr/lib
● Add DBMS Driver (for mysql → mysql-connector-java-bin.jar)
● Add requestHndler to solr/conf/solrconfig.xml
<requestHandler name="/dataimport"
class="org.apache.solr.handler.dataimport.DataImportHandler">
<lst name="defaults">
<str name="config">data-config.xml</str>
</lst>
</requestHandler>

14. Data-config.xml
<dataConfig>
<dataSource type="JdbcDataSource" driver="com.mysql.jdbc.Driver"
url="jdbc:mysql://127.0.0.1/restofraisweb" user="root" password="root" />
<document name="restofrais">
<entity name="Restaurant" query="SELECT id, nomRestaurant, ville_restaurant_id,code_postal_id,
type_cuisine_id FROM Restaurant">
<field column="id" name="id" />
<field column="nomRestaurant" name="nomRestaurant" />
<entity name="Ville" query="SELECT designation FROM Ville where id=$
{Restaurant.ville_restaurant_id}" >
<field column="designation" name="ville" />
</entity>
<entity name="Boisson" query="SELECT designation FROM restaurants_boissons inner join
Boisson on Boisson.id = restaurants_boissons.boisson_id where restaurants_boissons.restaurant_id=$
{Restaurant.id}" >
<field column="designation" name="boissons" />
</entity>
</entity>
</document>
</dataConfig>

15. Symfony Integration
•Solr->Solarium->nelmio_solarium
•Composer.json
•AppKernel.php
•Config/config.yml
{
"require": {
"nelmio/solarium-bundle": "2.*"
}
}
public function registerBundles()
{
$bundles = array(
...
new NelmioSolariumBundleNelmioSolariumBundle(),
...
);
...
}
nelmio_solarium:
endpoints:
default:
host: 172.16.0.219
port: 8080
path: /solr/restofrais
# core: solr
timeout: 5
clients:
default:
client_class:
SolariumCoreClientClient
adapter_class:
SolariumCoreClientAdapterHttp

16. Symfony Integration
• /**
• * @Route("/hello/{name}", name="_demo_hello")
• * @Template()
• */
• public function helloAction($name)
• {
•
• $client = $this->get('solarium.client');
•
• $select = $client->createSelect();
•
• $select->setQuery("ville:".$name);
•
• $results = $client->select($select);
• return array(
• 'search_results' => $results,
• );

17. Apache Solr vs ElasticSearch
Solr & ElasticSearch
•Lucene Apache Based
•Faceting
•Boosting
Solr :
•Pivot Facets
•One set of fields per schema, one schema per core
ElasticSearch :
•REST API
•Structured Query DSL
•Percolation

18. Apache Solr vs ElasticSearch

19. Apache Solr vs ElasticSearch

20. Links
●Solr wiki
http://wiki.apache.org/solr/
●Install Solr 4.6 with Tomcat 7 on Debian 7 :
http://pacoup.com/2014/02/05/install-solr-4-6-with-tomcat-7-on-debian-7
●solr-vs-elasticsearch.com :
http://solr-vs-elasticsearch.com
●Nelmio Solarium Bundle :
https://github.com/nelmio/NelmioSolariumBundle
●The Many Facets of Apache Solr, Yonik Seeley
http://www.youtube.com/watch?v=LyjiLYN-qIk