Feel free to open questions on discourse or stackoverflow with the hibernate-search tag when you need information; it will be easier to find for other users with the same problem.

To answer your question, yes you can do that.

• If this property is derived from actually persisted properties, you can tell Hibernate Search which ones, so that your entity will be properly reindexed on updates. Annotate the property like this:

  @IndexingDependency(derivedFrom = {
      @ObjectPath(@PropertyValue(propertyName = "property1")), // refers to "property1" from the same object as the transient property
      @ObjectPath({
          @PropertyValue(propertyName = "property2"),
          @PropertyValue(propertyName = "nestedProperty") // refers to "property2.nestedProperty" from the same object as the transient property
      })
  })
  @Transient
  String getMyCalculatedField() {
      ...
  }
  

• If this property is really transient (i.e. it is not derived from persisted properties), or if you don't care about reindexing on updates, you can simply annotate it with @IndexingDependency(reindexOnUpdate = ReindexOnUpdate.NO).