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4.3. Embedded and Associated Objects

Associated objects and embedded objects can be indexed as part of the root entity index. This allows searches of an entity based on properties of associated objects.
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4.3.1. Indexing Associated Objects
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The aim of the following example is to return places where the associated city is Atlanta via the Lucene query address.city:Atlanta. The place fields are indexed in the Place index. The Place index documents also contain the following fields:
  • address.id
  • address.street
  • address.city
These fields are also able to be queried.

Example 4.4. Indexing associations

@Indexed
public class Place {

    @Field
    private String name;

    @IndexedEmbedded( cascade = { CascadeType.PERSIST, CascadeType.REMOVE } )
    private Address address;
    ....
}

public class Address {

    @Field
    private String street;

    @Field
    private String city;

    @ContainedIn(mappedBy="address")
    private Set<Place> places;
    ...
}
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