How to index list of strings in hibernate search

Question

How to index list of strings in Hibernate search?

i tried like this

@Field(index = Index.YES, analyze = Analyze.NO, store = Store.YES, analyzer = @Analyzer(definition = "customanalyzer_query"))
@ElementCollection(fetch = FetchType.EAGER)
private Set<String> hashedTagList;

I'm getting error while committing new object.

I'm using Hibernate ogm with mongodb

did you try "Set<String>" ? It can't index elements of type Object. — Sanne
– Sanne, Commented Mar 8, 2018 at 15:31

Guillaume Smet · Accepted Answer · 2018-03-08 15:43:00Z

4

You can index element collections by using @IndexedEmbedded. This would be the easiest way to do what you want:

@Field(analyze = Analyze.NO, store = Store.YES)
@IndexedEmbedded
private Set<String> keywords = new HashSet<String>();

Note that you have to use Set so that the type of the contained element is clearly defined.

It's a workaround, we plan to fix the issue in a cleaner way in the upcoming Search 6.

You can also use a @FieldBridge to denormalize the data. The remark about using Set stays valid.

You can find the @FieldBridge we used at my previous job exactly for this purpose here: https://github.com/openwide-java/owsi-core-parent/blob/master/owsi-core/owsi-core-components/owsi-core-component-jpa/src/main/java/fr/openwide/core/jpa/search/bridge/StringCollectionFieldBridge.java .

By the way, you define an analyzer but you set analyze to Analyze.NO so your analyzer won't be used.

edited Mar 8, 2018 at 15:43

answered Mar 8, 2018 at 14:35

Guillaume Smet

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9 Comments

Shafeef Batry Over a year ago

I followed this one : stackoverflow.com/questions/5608281/…

Shafeef Batry Over a year ago

getting this error now : org.hibernate.search.bridge.BridgeException: Exception while calling bridge#objectToString entity class: com.healthelife.notes.entity.Notes entity property path: hashedTagList field bridge: String2FieldBridgeAdaptor [stringBridge=com.healthelife.notes.helper.CollectionToCSVBridge@56223ef0]

Guillaume Smet Over a year ago

Well I can't really help you if you don't use what I recommended and you don't post the full exception. Updated my answer with a working setup.

Shafeef Batry Over a year ago

sorry for not providing full exception, i followed whatever you suggested only - StringCollectionFieldBridge

Shafeef Batry Over a year ago

here is my entity class ---- @FieldBridge(impl=StringCollectionFieldBridge.class) @Field(index = Index.YES, analyze = Analyze.NO, store = Store.YES, analyzer = @Analyzer(definition = "customanalyzer_query")) @ElementCollection(fetch = FetchType.EAGER) private Set<String> hashedTagList; public Set<String> getHashedTagList() { return hashedTagList; } public void setHashedTagList(Set<String> hashedTagList) { this.hashedTagList = hashedTagList; }

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