# How to set the anlyzer? **URL:** \ **Category:** Elasticsearch\ **Created:** [May 25, 2010, 7:24pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970 "2010-05-25T19:24:11Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![John\_Chang](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@John\_Chang](https://discuss.elastic.co/u/John_Chang)\ **Post date:** [May 25, 2010, 7:24pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/1 "2010-05-25T19:24:11Z")
My lucene app (which I am converting to ElasticSearch) uses org.apache.lucene.analysis.snowball.SnowballAnalyzer as its analyzer. I like it for the stemming abilities. How can I get support for this (or another analyzer) in ElasticSearch? Thanks. I am currently on ElasticSearch 0.7.1. ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [May 26, 2010, 6:28am UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/2 "2010-05-26T06:28:47Z")
[http://www.elasticsearch.com/docs/elasticsearch/index\_modules/analysis/](http://www.elasticsearch.com/docs/elasticsearch/index_modules/analysis/) On Tue, May 25, 2010 at 10:24 PM, John Chang [jchangkihtest2@gmail.com](mailto:jchangkihtest2@gmail.com)wrote: > My lucene app (which I am converting to Elasticsearch) uses > org.apache.lucene.analysis.snowball.SnowballAnalyzer as its analyzer. I > like it for the stemming abilities. How can I get support for this (or > another analyzer) in Elasticsearch? Thanks. > > ## I am currently on Elasticsearch 0.7.1. > > View this message in context: > [http://elasticsearch-users.115913.n3.nabble.com/How-to-set-the-anlyzer-tp842952p842952.html](http://elasticsearch-users.115913.n3.nabble.com/How-to-set-the-anlyzer-tp842952p842952.html) > Sent from the Elasticsearch Users mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![John\_Chang](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@John\_Chang](https://discuss.elastic.co/u/John_Chang)\ **Post date:** [May 26, 2010, 9:20pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/3 "2010-05-26T21:20:24Z")
I looked in the org.elasticsearch.index.analysis directory and could not find any analyzer privider for the SnowballAnalyzer. So, using the BrazilianAnalyzerProvider as an example, I tried to create my own, but I keep getting this error upon startup: "1) Could not find a suitable constructor in com.kiha.server.services.index.KihaSnowballAnalyzer. Classes must have either one (and only one) constructor annotated with @Inject or a zero-argument constructor that is not private." However, my class does have one constructor with an @Inject annotation. This is what I did: I tried adding this to my elasticsearch.json: index: analysis: analyzer: standard: type: com.mycompany.server.services.index.MyCompanySnowballAnalyzerProvider I put com.mycompany.server.services.index.MyCompanySnowballAnalyzerProvider into a jar in the ./lib directory. The class has this constructor: ``` @Inject public MyCompanySnowballAnalyzerProvider(Index index, @IndexSettings Settings indexSettings, @Assisted String name, @Assisted Settings settings) { super(index, indexSettings, name); analyzer = new SnowballAnalyzer(Version.LUCENE_CURRENT, "English"); } ``` The class extends AbstractAnalyzerProvider: public class MyCompanySnowballAnalyzerProvider extends AbstractAnalyzerProvider ---
**Author:** ![John\_Chang](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@John\_Chang](https://discuss.elastic.co/u/John_Chang)\ **Post date:** [May 26, 2010, 9:23pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/4 "2010-05-26T21:23:04Z")
Typo: in the above message, I meant to replace "kiha" with "mycompany" throughout, but missed some places. So "Could not find a suitable constructor in com.kiha.server.services.index.KihaSnowballAnalyzer." should be read as "Could not find a suitable constructor in com.mycompany.server.services.index.MyCompanySnowballAnalyzerProvider." in order to correspond to the rest of my post. Thanks. ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [May 28, 2010, 10:25pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/5 "2010-05-28T22:25:57Z")
This should work, strange. You get an exception for com.kiha.server.services.index.KihaSnowballAnalyzer, while I would expect you would get the exception for com.kiha.server.services.index.KihaSnowballAnalyzerProvider (note the Provider at the end). Which one are you getting again? On Thu, May 27, 2010 at 12:23 AM, John Chang [jchangkihtest2@gmail.com](mailto:jchangkihtest2@gmail.com)wrote: > ## Typo: in the above message, I meant to replace "kiha" with "mycompany" throughout, but missed some places. So "Could not find a suitable constructor in com.kiha.server.services.index.KihaSnowballAnalyzer." should be read as "Could not find a suitable constructor in com.mycompany.server.services.index.MyCompanySnowballAnalyzerProvider." in order to correspond to the rest of my post. Thanks. > > View this message in context: > [http://elasticsearch-users.115913.n3.nabble.com/How-to-set-the-anlyzer-tp842952p846196.html](http://elasticsearch-users.115913.n3.nabble.com/How-to-set-the-anlyzer-tp842952p846196.html) > Sent from the Elasticsearch Users mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![John\_Chang](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@John\_Chang](https://discuss.elastic.co/u/John_Chang)\ **Post date:** [June 1, 2010, 10:29pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/6 "2010-06-01T22:29:45Z")
I am getting an exception from com.kiha.server.services.index.KihaSnowballAnalyzer. Although perhaps oddly named, this class IS an extension of AbstractAnalyzerProvider. It is declared as: public class KihaSnowballAnalyzer extends AbstractAnalyzerProvider I do not have a class named KihaSnowballAnalyzerProvider. ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [June 1, 2010, 10:43pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/7 "2010-06-01T22:43:07Z")
Can you write a quick test case and I will check why this happens? On Wed, Jun 2, 2010 at 1:29 AM, John Chang [jchangkihtest2@gmail.com](mailto:jchangkihtest2@gmail.com) wrote: > I am getting an exception from > com.kiha.server.services.index.KihaSnowballAnalyzer. Although perhaps > oddly > named, this class IS an extension of AbstractAnalyzerProvider. It is > declared as: > > public class KihaSnowballAnalyzer extends > AbstractAnalyzerProvider > > ## I do not have a class named KihaSnowballAnalyzerProvider. > > View this message in context: > [http://elasticsearch-users.115913.n3.nabble.com/How-to-set-the-anlyzer-tp842952p863060.html](http://elasticsearch-users.115913.n3.nabble.com/How-to-set-the-anlyzer-tp842952p863060.html) > Sent from the Elasticsearch Users mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![John\_Chang](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@John\_Chang](https://discuss.elastic.co/u/John_Chang)\ **Post date:** [June 1, 2010, 11:08pm UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/8 "2010-06-01T23:08:26Z")
I can't write a test case in terms of a JUnit to repro the issue, as I can't get the server to start up without error. The test is simply to start up the server and look for errors. If you wanted to repro it, all I can think of is to try to run my class and config. To repro: 1. Use 0.7.1 (no particular reason I'm not on latest; just that it changes often, I can try with the latest if you advise) 2. Add this to your elasticsearch.yml: index: analysis: analyzer: standard: type: com.kiha.server.services.index.KihaSnowballAnalyzer 3. Compile this class and put it in your classpath. Note that it is modeled on the BrazilianAnalyzer I found. Note also that to get it to compile, you need lucene-snowball-3.0.0-sources.jar. Thanks for your time. package com.kiha.server.services.index; import com.google.common.collect.ImmutableSet; import com.google.common.collect.Iterators; import com.google.inject.Inject; import com.google.inject.assistedinject.Assisted; //import org.apache.lucene.analysis.br.BrazilianAnalyzer; import org.apache.lucene.analysis.snowball.SnowballAnalyzer; import org.apache.lucene.util.Version; import org.elasticsearch.index.Index; import org.elasticsearch.index.analysis.AbstractAnalyzerProvider; import org.elasticsearch.index.settings.IndexSettings; import org.elasticsearch.util.settings.Settings; import java.util.Set; public class KihaSnowballAnalyzer extends AbstractAnalyzerProvider { ``` private final Set stopWords; private final Set stemExclusion; private final SnowballAnalyzer analyzer; @Inject public KihaSnowballAnalyzer(Index index, @IndexSettings Settings indexSettings, @Assisted String name, @Assisted Settings settings) { super(index, indexSettings, name); String[] stopWords = settings.getAsArray("stopwords"); if (stopWords.length > 0) { this.stopWords = ImmutableSet.copyOf(Iterators.forArray(stopWords)); } else { this.stopWords = ImmutableSet.copyOf(Iterators.forArray()); //this.stopWords = BrazilianAnalyzer.getDefaultStopSet(); } String[] stemExclusion = settings.getAsArray("stem_exclusion"); if (stemExclusion.length > 0) { this.stemExclusion = ImmutableSet.copyOf(Iterators.forArray(stemExclusion)); } else { this.stemExclusion = ImmutableSet.of(); } analyzer = new SnowballAnalyzer(Version.LUCENE_CURRENT, "English"); } @Override public SnowballAnalyzer get() { return this.analyzer; } ``` } ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 4:23am UTC](https://discuss.elastic.co/t/how-to-set-the-anlyzer/2970/9 "2017-07-06T04:23:38Z")