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Allow for a module specific inclusion for DTO projections.
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schauder authored and mp911de committed Jun 17, 2021
1 parent a45873e commit 733e4d8
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11 changes: 8 additions & 3 deletions src/main/asciidoc/repository-projections.adoc
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Expand Up @@ -34,7 +34,7 @@ interface PersonRepository extends Repository<Person, UUID> {
====

Now imagine that we want to retrieve the person's name attributes only.
What means does Spring Data offer to achieve this? The rest of this chapter answers that question.
What means does Spring Data offer to achieve this?The rest of this chapter answers that question.

[[projections.interfaces]]
== Interface-based Projections
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You can dramatically simplify the code for a DTO by using https://projectlombok.org[Project Lombok], which provides an `@Value` annotation (not to be confused with Spring's `@Value` annotation shown in the earlier interface examples).
If you use Project Lombok's `@Value` annotation, the sample DTO shown earlier would become the following:
[source, java]
[source,java]
----
@Value
class NamesOnly {
String firstname, lastname;
}
----
Fields are `private final` by default, and the class exposes a constructor that takes all fields and automatically gets `equals(…)` and `hashCode()` methods implemented.
====

ifdef::repository-projections-dto-limitations-file[]
include::{repository-projections-dto-limitations-file}[]
endif::[]

[[projection.dynamic]]
== Dynamic Projections

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.A repository using a dynamic projection parameter
====
[source, java, subs="+attributes"]
[source,java,subs="+attributes"]
----
interface PersonRepository extends Repository<Person, UUID> {
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