├── .gitignore
├── README.textile
├── pom.xml
└── src
    └── main
        └── java
            └── org
                └── elasticsearch
                    └── index
                        └── similarity
                            ├── CustomSimilarity.java
                            └── CustomSimilarityProvider.java


/.gitignore:
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 1 | # Compiled source #
 2 | ###################
 3 | *.com
 4 | *.class
 5 | *.dll
 6 | *.exe
 7 | *.o
 8 | *.so
 9 | target/
10 | target/
11 | .classpath
12 | .project
13 | .settings
14 | 
15 | 
16 | # Packages #
17 | ############
18 | # it's better to unpack these files and commit the raw source
19 | # git has its own built in compression methods
20 | *.7z
21 | *.dmg
22 | *.gz
23 | *.iso
24 | *.jar
25 | *.rar
26 | *.tar
27 | *.zip
28 | 
29 | # Logs and databases #
30 | ######################
31 | *.log
32 | *.sql
33 | *.sqlite
34 | 
35 | # OS generated files #
36 | ######################
37 | .DS_Store*
38 | ehthumbs.db
39 | Icon?
40 | Thumbs.db
41 | 
42 | 


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/README.textile:
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 1 | h1. A custom SimilarityProvider example for Elasticseach
 2 | 
 3 | This plugin contains a custom @Similarity@ class that can be used in an index:
 4 | 
 5 | <pre>
 6 | curl -XPOST 'http://host:port/tweeter/' -d '
 7 | {
 8 |   "settings": {
 9 |     "similarity": {
10 |       "index": {
11 |         "type": "org.elasticsearch.index.similarity.CustomSimilarityProvider"
12 |       },
13 |       "search": {
14 |         "type": "org.elasticsearch.index.similarity.CustomSimilarityProvider"
15 |       }
16 |     }
17 |   }
18 | }'
19 | </pre> 
20 | 
21 | Enjoy
22 | 
23 | 


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/pom.xml:
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 1 | <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 2 | 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 3 | 	<modelVersion>4.0.0</modelVersion>
 4 | 
 5 | 	<groupId>fr.tlrx</groupId>
 6 | 	<artifactId>elasticsearch-custom-similarity-provider</artifactId>
 7 | 	<version>1.0-SNAPSHOT</version>
 8 | 	<packaging>jar</packaging>
 9 | 	<name>A custom SimilarityProvider example for Elasticsearch</name>
10 | 	<url>https://github.com/tlrx/elasticsearch-custom-similarity-provider</url>
11 | 
12 | 	<properties>
13 | 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
14 | 		<elasticsearch.version>0.20.0.Beta1-SNAPSHOT</elasticsearch.version>
15 | 	</properties>
16 | 
17 | 	<dependencies>
18 | 		<dependency>
19 | 			<groupId>junit</groupId>
20 | 			<artifactId>junit</artifactId>
21 | 			<version>4.10</version>
22 | 			<scope>test</scope>
23 | 		</dependency>
24 | 		<dependency>
25 | 			<groupId>org.elasticsearch</groupId>
26 | 			<artifactId>elasticsearch</artifactId>
27 | 			<version>${elasticsearch.version}</version>
28 | 		</dependency>
29 | 	</dependencies>
30 | 	
31 | </project>
32 | 


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/src/main/java/org/elasticsearch/index/similarity/CustomSimilarity.java:
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 1 | package org.elasticsearch.index.similarity;
 2 | 
 3 | import org.apache.lucene.search.DefaultSimilarity;
 4 | 
 5 | /**
 6 |  * Custom similarity class
 7 |  * 
 8 |  * @author tanguy
 9 |  *
10 |  */
11 | @SuppressWarnings("serial")
12 | public class CustomSimilarity extends DefaultSimilarity {
13 | 
14 | 	@Override
15 | 	public float idf(int docFreq, int numDocs) {
16 | 		return 1.0f;
17 | 	}
18 | }
19 | 


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/src/main/java/org/elasticsearch/index/similarity/CustomSimilarityProvider.java:
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 1 | package org.elasticsearch.index.similarity;
 2 | 
 3 | import org.elasticsearch.common.inject.Inject;
 4 | import org.elasticsearch.common.inject.assistedinject.Assisted;
 5 | import org.elasticsearch.common.settings.Settings;
 6 | import org.elasticsearch.index.Index;
 7 | import org.elasticsearch.index.settings.IndexSettings;
 8 | 
 9 | /**
10 |  * Simple {@link SimilarityProvider} for a {@link CustomSimilarity}
11 |  * 
12 |  * @author tlrx
13 |  *
14 |  */
15 | public class CustomSimilarityProvider extends AbstractSimilarityProvider<CustomSimilarity> {
16 | 
17 | 	private CustomSimilarity similarity;
18 | 
19 | 	@Inject
20 | 	public CustomSimilarityProvider(Index index,
21 | 			@IndexSettings Settings indexSettings, @Assisted String name,
22 | 			@Assisted Settings settings) {
23 | 		super(index, indexSettings, name);
24 | 		this.similarity = new CustomSimilarity();
25 | 	}
26 | 
27 | 	public CustomSimilarity get() {
28 | 		return similarity;
29 | 	}
30 | }
31 | 


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