3.3, why fieldBridge is called during query building

shailesh.mangal · **Posted:** Thu Dec 23, 2010 3:50 pm

I recently upgraded to 3.3 and changed all my search queries to use super easy DSL. It failed for me with following exception:

Caused by: org.hibernate.search.SearchException: FieldBridge class org.hibernate.search.bridge.String2FieldBridgeAdaptordoes not have a objectToString method: field user in com.thed.model.ReleaseTestSchedule
at org.hibernate.search.engine.DocumentBuilderIndexedEntity.objectToString(DocumentBuilderIndexedEntity.java:601)
at org.hibernate.search.query.dsl.impl.ConnectedMultiFieldsTermQueryBuilder.buildSearchTerm(ConnectedMultiFieldsTermQueryBuilder.java:133)
at org.hibernate.search.query.dsl.impl.ConnectedMultiFieldsTermQueryBuilder.createQuery(ConnectedMultiFieldsTermQueryBuilder.java:92)
at org.hibernate.search.query.dsl.impl.ConnectedMultiFieldsTermQueryBuilder.createQuery(ConnectedMultiFieldsTermQueryBuilder.java:73)

and if I add ignoreFieldBridge, I get NPE
Caused by: java.lang.NullPointerException
at java.io.StringReader.<init>(StringReader.java:33)
at org.hibernate.search.query.dsl.impl.Helper.getAllTermsFromText(Helper.java:76)
at org.hibernate.search.query.dsl.impl.ConnectedMultiFieldsTermQueryBuilder.getAllTermsFromText(ConnectedMultiFieldsTermQueryBuilder.java:169)
at org.hibernate.search.query.dsl.impl.ConnectedMultiFieldsTermQueryBuilder.createQuery(ConnectedMultiFieldsTermQueryBuilder.java:98)
at org.hibernate.search.query.dsl.impl.ConnectedMultiFieldsTermQueryBuilder.createQuery(ConnectedMultiFieldsTermQueryBuilder.java:73)

I wonder why FieldBridge getting called during query building. It seems to have changed after 3.2.1

sanne.grinovero · **Posted:** Thu Dec 23, 2010 5:42 pm

Hi,

Quote:

I wonder why FieldBridge getting called during query building. It seems to have changed after 3.2.1

of course it changed, there was no DSL at that version, so you where writing Lucene queries directly I guess?

Could you post enough information to reproduce this issue?
I would need to see the annotations on the field and the query you're building, a complete unit test would be great.

shailesh.mangal · **Posted:** Fri Dec 24, 2010 5:33 am

I ll try to upload a full unit test in next few days. Mean while, I try to narrow down the issue, it boils down to having a classBridge on a associated entity (indexed via @indexEmbedded). e.g

Code:

@Entity @Indexed
Class Person{
@IndexedEmbedded
   private PersonDetails details;
}

@ClassBridge(
        name = "personDetailsContents",
        index = Index.TOKENIZED,
        store = Store.YES,
        impl = PersonDetailsClassBridge.class
)
public class PersonDetails{
}

when I comment ClassBridge and remove the details.personDetailsContents from the query, it works fine. What could be wrong with this? Is there any way to disable classBridge?

shailesh.mangal · **Posted:** Thu Dec 30, 2010 5:31 pm

I was able to get around this issue by putting ignoreFieldBridge on this field

Code:

name = "personDetailsContents",

Like this:

Code:

...
.should(testcaseQB.keyword().onField("personDetailsContents").ignoreFieldBridge().boostedTo((float) 1).matching(words).createQuery()).createQuery();