Enabling Solr or ElasticSearch in your PHP application isn't that hard these days anymore. There are multiple libraries available which can turn any collection of data into a searchable index making it as accessible as the PHP language itself. But how do you become a pro in creating the right schema, query and data analyzer? This talk will take the attendee knee deep into the problems we faced in analyzing, faceting, getting the right user experience and of course the relevant results for the second-hand car site AutoTrack where you have to ability to search on more then 200 different attributes of a car! Now you may calculate how many unique different search queries that sums up to…

1. TITEL DAG MAAND JAARPHP NORTH EAST 2014 JEROEN VAN DIJK
LIKING
RELEVANCE

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WILL I FIND WHAT I’M LOOKING FOR?

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129 LINKEDIN PROFILE MATCHES
SEARCHING JEROEN VAN DIJK?

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enrise.com/jeroen-van-dijk
phpbenelux.eu/jeroen-van-dijk
jrdk.nl/jeroen-van-dijk
twitter.com/jrvandijk
LINK: JEROEN VAN DIJK

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joind.in/10916
LINK: JOIND.IN

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WHAT IS AUTOTRACK?

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HOW MANY OPTIONS DO I HAVE?

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NEED MORE?

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WHERE TO START?

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HOW DO YOU SEARCH?
SOLR

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SCHEMA.XML, WHERE DO I START?
├── contrib
├── dist
├── docs
├── example
│ ├── solr
│ │ ├── bin
│ │ └── collection1
│ │ └── conf
│ │ ├── admin-extra.html
│ │ ├── admin-extra.menu-bottom.html
│ │ ├── admin-extra.menu-top.html
│ │ ├── currency.xml
│ │ ├── elevate.xml
│ │ ├── mapping-FoldToASCII.txt
│ │ ├── mapping-ISOLatin1Accent.txt
│ │ ├── protwords.txt
│ │ ├── schema.xml
│ │ ├── scripts.conf
│ │ ├── solrconfig.xml
│ │ ├── spellings.txt
│ │ ├── stopwords.txt
│ │ ├── synonyms.txt
│ │ ├── update-script.js
└── licenses

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DID YOU READ THE SCHEMA.XML?
1 <?xml version="1.0" encoding="UTF-8" ?>
2 <schema name="example" version="1.5">
3 <!--
4 This is the Solr schema file. This file should be named "schema.xml" and
5 should be in the conf directory under the solr home
6 (i.e. ./solr/conf/schema.xml by default)
7 or located where the classloader for the Solr webapp can find it.
8
9 This example schema is the recommended starting point for users.
10 It should be kept correct and concise, usable out-of-the-box.
11
12 For more information, on how to customize this file, please see
13 http://wiki.apache.org/solr/SchemaXml
14 -->
15 <types>
16 <!-- There is 61Kb of example schema -->
17 </types>
18 <fields>
19 <!-- documented in this file! -->
20 </fields>
21 <uniqueKey>id</uniqueKey>
22 <defaultSearchField>text</defaultSearchField>
23 </schema>

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WHAT ARE TYPES AND FIELDS?
1 <?xml version="1.0" encoding="UTF-8" ?>
2 <schema name="cars" version="1.5">
3 <types>
4 <!-- A plain string type -->
5 <fieldType name="string" class=“solr.StrField"
6 sortMissingLast="true" omitNorms="true"/>
7 <!-- The model type for tokenizing & filtering synonyms -->
8 <fieldtype name="modelType" class="solr.TextField">
9 <analyzer type="query">
10 <tokenizer class="solr.KeywordTokenizerFactory"/>
11 <filter class="solr.SynonymFilterFactory" synonyms="models.
12 querytime.txt" ignoreCase="false"
13 expand="true"/>
14 </analyzer>
15 </fieldtype>
16 </types>
17 <fields>
18 <field name="merk" type="string" indexed="true" stored="true"
19 termVectors="true"/>
20 <field name="model" type="modelType" indexed="true" stored="true"/>
21 </fields>
22 <!-- ... -->
23 </schema>

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WHAT’S THE USAGE OF A COPY FIELD?
1 <?xml version="1.0" encoding="UTF-8" ?>
2 <schema name="cars" version="1.5">
3 <types>
4 <!-- ... -->
5 </types>
6 <fields>
7 <!-- ... -->
8 <field name="text" type="text" indexed="true" stored="false"
9 multiValued="true"/>
10 </fields>
11 <uniqueKey>auto_id</uniqueKey>
12 <defaultSearchField>text</defaultSearchField>
13 <solrQueryParser defaultOperator="OR"/>
14
15 <copyField source="merk" dest="text"/>
16 <copyField source="model" dest="text"/>
17 <copyField source="uitvoering" dest="text"/>
18 <copyField source="aanbieder_informatie" dest="text"/>
19 <copyField source="interieur_kleur" dest="text"/>
20 <copyField source="bouwjaar" dest="text"/>
21 </schema>

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HOW DID YOU INDEX DATA?
§Using Solr since version 1.3
§CSV & XML update request handlers
§Data import handler
§Explicitly chose Solr XML import

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CAN IT BE MORE ABSTRACT?
Database
!
!
Nightly bulk export Trigger item export
!
!
Mapping
!
!
Solr

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DO YOU HAVE SOME TIPS?
§Analyze your data up front
§Do not store, what you don’t want to visualize!
§Pay extra attention to columns you want to sort
§Create a well defined copy field for the query
§Do not use Solr as your persistent storage

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NO SQL?
SELECT * FROM …

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WHICH QUERY HANDLERS ARE THERE?
§Standard
§Disjunction Max
§Extended Disjunction Max
§Create your own based on the above!

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WHAT IS SOLARIUM?
Extensible PHP Library
Usable in any PHP based framework
Abstracts raw Solr communication
@basdenooijer / @solariumproject

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IS IT THAT EASY WITH SOLARIUM?
1 // get a select query instance
2 $client = new SolariumClient($config);
3 $query = $client->createSelect();
4
5 // define the output field
6 $query->setFields(array('auto_id', 'merk_model_uitvoering',
7 'aanbieder_informatie', 'score'));
8 $query->setSorts(array('score' => 'desc'));
9
10 // set the query
11 $query->setQuery('audi +avant +abs');
12
13 $resultset = $client->select($query);
select?q=audi +avant +abs
&fl=auto_id,merk_model_uitvoering,aanbieder_informa
tie,score&sort=score desc

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HOW DO I USE THE DISMAX REQUEST HANDLER?
1 // define the output field
2 $query->setFields(array('auto_id', 'merk_model_uitvoering',
3 'aanbieder_informatie', 'score'));
4 $query->setSorts(array('score' => 'desc'));
5
6 // get the dismax component and set a boost query
7 $dismax = $query->getDisMax();
8 $dismax->setQueryFields('uitvoering^2.3 text^0.9');
9 // set the query
10 $query->setQuery('audi +avant +abs');
11
12 $resultset = $client->select($query);
select?q=audi +avant +abs&
fl=auto_id,merk_model_uitvoering,aanbieder_informat
ie,score&sort=score
desc&defType=dismax&qf=uitvoering^2.3 text^0.9

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WHAT IS A BOOST FUNCTION?
1 // define the output field
2 $query->setFields(array('auto_id', 'merk_model_uitvoering',
2 'score'));
3 $query->setSorts(array('score' => 'asc'));
4
5 // get the dismax component and set a boost function
6 $dismax = $query->getDisMax();
7 $dismax->setBoostFunctions(
8 ‘sqedist(x_coordinaat,y_coordinaat,155000,463000)');
9
10 // set the query
11 $query->setQuery('audi +avant +abs');
select?q=audi +avant +abs
&fl=auto_id,merk_model_uitvoering,score&sort=score
asc&defType=dismax&bf=sqedist(x_coordinaat,y_coordi
naat,155000,463000)

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WHY NOT USE WGS84 FOR DISTANCE SEARCH?
!
Solr 4.0 introduced
!
SpatialRecursivePrefixTreeFieldType

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QUERIES

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WHAT IS THE LUCENE RANGE QUERY SYNTAX?
maximum_speed:[1 TO 10]
publication_date:[20140301 TO 20140318]
publication_date:[* TO NOW]
any_range:[* TO *]

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HOW DO I CREATE A RANGE QUERY?
1 // get the facetset component
2 $facetSet = $query->getFacetSet();
3
4 // create a facet field instance and set options
5 $facet = $facetSet->createFacetRange('topsnelheid');
6 $facet->setField('topsnelheid');
7 $facet->setStart(120);
8 $facet->setGap(10);
9 $facet->setEnd(250);
10
11 // this executes the query and returns the result
12 $resultset = $client->select($query);
select?facet=true&facet.range={!key=topsnelheid}
topsnelheid&f.topsnelheid.facet.range.start=90&f.to
psnelheid.facet.range.end=250&f.topsnelheid.facet.r
ange.gap=10

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HOW DO I CREATE A RANGE QUERY?
=== Topsnelheid ===
[ ] 120.0 [31]
[ ] 130.0 [616]
[ ] 140.0 [2842]
[ ] 150.0 [17254]
[ ] 160.0 [15869]
[ ] 170.0 [25597]
[ ] 180.0 [29735]
[ ] 190.0 [25370]
[ ] 200.0 [17624]
[ ] 210.0 [10256]
[ ] 220.0 [6611]
[ ] 230.0 [3322]
[ ] 240.0 [1768]
select?facet=true&facet.range={!key=topsnelheid}
topsnelheid&f.topsnelheid.facet.range.start=90&f.to
psnelheid.facet.range.end=250&f.topsnelheid.facet.r
ange.gap=10

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HOW DO YOU DEFINE A CUSTOM RANGE?

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WHAT IS A FACET MULTI QUERY?
1 // get the facetset component
2 $facetSet = $query->getFacetSet();
3
4 // create a facet field instance and set options
5 $facet = $facetSet->createFacetMultiQuery(
6 array('key' => 'topsnelheid'));
7 $facet->createQuery(
8 'topsnelheid[*TO140]', 'topsnelheid:[* TO 140]');
9 $facet->createQuery(
10 'topsnelheid[141TO150]', 'topsnelheid:[141 TO 150]');
11
12 // this executes the query and returns the result
13 $resultset = $client->select($query);
select?facet=true&facet.query={!
key=topsnelheid[*TO140]}topsnelheid:[* TO
140]&facet.query={!key=topsnelheid[141TO150]}
topsnelheid:[141 TO 150]

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BUT WHAT ABOUT THE OTHER FIELDS?

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RESULT
GROUPING

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WHAT ABOUT DIFFERENT CAR OPTIONS?

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WHAT ABOUT DIFFERENT CAR OPTIONS?

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CREATING GROUPING QUERY
1 // define the output field
2 $query->setFields(array('auto_id',
3 'merk_model_uitvoering', 'score'));
3 $query->setSorts(array('score' => 'asc'));
4
5 // get group component and create two query groups
6 $group = $query->getGrouping();
7 $group->addField('uitvoering_carrosserievorm');
8
9 $query->setQuery('+cabriolet +abs');
select?q=+cabriolet
+abs&fl=auto_id,merk_model_uitvoering,score&sort=sc
ore asc&group=true
&group.field=uitvoering_carrosserievorm

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PIVOT
FACETING

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ISN’T THAT GOOGLE SPREADSHEETS?

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WHAT IS A DECISION TREE?
!
Audi
!
!
A3 A4
!

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IS IT EASY TO CREATE A PIVOT FACET?
1 $query->setQuery('+cabriolet +abs');
2
3 // get the facetset component
4 $facetSet = $query->getFacetSet();
5
6 // create a facet pivot instance
7 $facet = $facetSet->createFacetPivot('merk-model');
8 $facet->addFields('merk,model');
9
10 // this executes the query and returns the result
11 $resultset = $client->select($query);
select?q=+cabriolet +abs
&facet=true&facet.pivot=merk,model

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SEEMS SO I GUESS?
[ ] AUDI [7]
[ ] -- A4 [7]
[ ] BMW [4]
[ ] -- 3-SERIE [3]
[ ] -- 1-SERIE [1]
[ ] VOLKSWAGEN [3]
[ ] -- GOLF [2]
[ ] -- NEW BEETLE [1]
[ ] PEUGEOT [3]
[ ] -- 207 [1]
[ ] -- 306 [1]
[ ] -- 307 [1]
select?q=+cabriolet +abs
&facet=true&facet.pivot=merk,model

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MULTI SELECT
FACETING

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WHERE ARE THE ZEROES?

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FACET MINCOUNT 0

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WHERE DID LPG GO?

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FACET MINCOUNT 1

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DO YOU SEE ONLY THE RELEVANT MODELS?
=== Model ===
[ ] A3 (11)
[ ] A4 (19)
[ ] A6 (7)
[ ] A8 (2)
!
!
facet=true&facet.field=model&facet.mincount=1&fq=aa
nbieder_id:1&fq=merk:AUDI

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IS THIS THE EXPECTED RESULT?
=== Model ===
[ ] A3 (11)
[X] A4 (19)
[ ] A6 (7)
[ ] A8 (2)
!
!
facet=true&facet.field=model&facet.mincount=1&fq=aa
nbieder_id:1&fq=merk:AUDI&fq=model:A4

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OR THIS ONE?
=== Model ===
[X] A4 (19)
!
!
facet=true&facet.field=model&facet.mincount=1&fq=aa
nbieder_id:1&fq=merk:AUDI&fq=model:A4

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TAGGING AND EXCLUDING TO THE RESCUE?
1 $query->addFilterQueries(array(
2 array('key'=>'aanbieder_id', ‘query’=>'aanbieder_id:1',
3 'tag'=>'inner'),
4 array('key'=>'merk', 'query'=>'merk:AUDI',
5 'tag'=>'inner'),
6 array('key'=>'model', 'query'=>'model:A4',
7 'tag'=>'outer')));
8
9 // get the facetset component
10 $facetSet = $query->getFacetSet();
11 $facetSet->setMinCount(1);
12 $facetSet->createFacetField(array('key'=>'model',
13 ‘field'=>'model', 'exclude'=>'outer'));
facet=true&facet.field={!key=model ex=outer}
model&facet.mincount=1&
fq={!tag:inner}aanbieder_id:1&fq={!tag=inner}
merk:AUDI&fq={!tag=outer}model:A4

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IS THIS BETTER?
=== Model ===
[ ] A3 (11)
[X] A4 (19)
[ ] A6 (7)
[ ] A8 (2)
!
!
facet=true&facet.field={!key=model ex=outer}
model&facet.mincount=1&
fq={!tag:inner}aanbieder_id:1&fq={!tag=inner}
merk:AUDI&fq={!tag=outer}model:A4

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WHERE ARE THE COUNTS?

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FACET MINCOUNT 0

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DID YOU JUST CREATE THE FACET TWICE?
1 $query->addFilterQueries(array(
2 array('query'=>'aanbieder_id:1', 'tag'=>'inner'),
3 array('query'=>'carrosserievorm:CABRIOLET',
4 'tag'=>'outer')));
5
6 // get the facetset component and add fields
7 $facetSet = $query->getFacetSet();
9
9 $facetSet->createFacetField(array('key'=>'cv',
10 'field'=>'carrosserievorm', 'exclude'=>'outer'));
11 $facetSet->createFacetField(array('key'=>'cv_internal',
12 'field'=>'carrosserievorm'));
select?facet=true&fq={!tag=inner}aanbieder_id:1&
fq={!tag=outer}carrosserievorm:CABRIOLET&
facet.field={!key=cv ex=outer}carrosserievorm&
facet.field={!key=cv_internal}carrosserievorm

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WHAT IS THE EXPECTED RESULT?
=== CV ===
[ ] HATCHBACK [514]
[ ] STATIONWAGEN [510]
[ ] SEDAN [188]
[ ] MPV [185]
[ ] SUV/TERREINWAGEN [108]
[X] CABRIOLET [71]
select?facet=true&fq={!tag=inner}aanbieder_id:1&
fq={!tag=outer}carrosserievorm:CABRIOLET&
facet.field={!key=cv ex=outer}carrosserievorm&
facet.field={!key=cv_internal}carrosserievorm
=== CV_INTERNAL ===
[ ] HATCHBACK [0]
[ ] STATIONWAGEN [0]
[ ] SEDAN [0]
[ ] MPV [0]
[ ] SUV/TERREINWAGEN [0]
[ ] COUPE [0]
[ ] BEDRIJFSWAGEN [0]
[X] CABRIOLET [26]
[ ] PERSONENBUS [0]

56. imap://mvdpolder@mail.enrise.com:993/fetch%3EUID%3E/INBOX%3E13466?part=1.2&type=image/jpeg&filename=foto.JPG
WHAT IS THE EXPECTED RESULT?
!
=== CV ===
[ ] HATCHBACK [0]
[ ] STATIONWAGEN [0]
[ ] SEDAN [0]
[ ] MPV [0]
[ ] SUV/TERREINWAGEN [0]
[X] CABRIOLET [26]

57. imap://mvdpolder@mail.enrise.com:993/fetch%3EUID%3E/INBOX%3E13466?part=1.2&type=image/jpeg&filename=foto.JPG
INTERESTED IN SOME STATISTICS?
1 index, 2 web applications
!
250.000 cars, over 200 attributes per car
!
Only ~ 500Mb search index, easily run in memory

58. imap://mvdpolder@mail.enrise.com:993/fetch%3EUID%3E/INBOX%3E13466?part=1.2&type=image/jpeg&filename=foto.JPG
Thank you!
Jeroen van Dijk | jrvandijk | joind.in/10916