Show Table of Contents
4.2. Mapping Properties Multiple Times
Properties may need to be mapped multiple times per index, using different indexing strategies. For example, sorting a query by field requires that the field is not analyzed. To search by words in this property and also sort it, the property will need to be indexed it twice - once analyzed and once un-analyzed.
@Fields can be used to perform this search. For example:
Example 4.3. Using @Fields to map a property multiple times
@Indexed(index = "Book")
public class Book {
@Fields( {
@Field,
@Field(name = "summary_forSort", analyze = Analyze.NO, store = Store.YES)
})
public String getSummary() {
return summary;
}
}
In the example above, the field
summary is indexed twice - once as summary in a tokenized way, and once as summary_forSort in an untokenized way. @Field supports 2 attributes useful when @Fields is used:
- analyzer: defines a @Analyzer annotation per field rather than per property
- bridge: defines a @FieldBridge annotation per field rather than per property
Where did the comment section go?
Red Hat's documentation publication system recently went through an upgrade to enable speedier, more mobile-friendly content. We decided to re-evaluate our commenting platform to ensure that it meets your expectations and serves as an optimal feedback mechanism. During this redesign, we invite your input on providing feedback on Red Hat documentation via the discussion platform.