Update docs to show inheritance

src/main/docs/guide/httpServer/datavalidation/validationGroups.adoc

@@ -2,7 +2,7 @@ You can enforce a subset of constraints using https://beanvalidation.org/2.0/spe
 
 snippet::io.micronaut.docs.datavalidation.groups.FinalValidation[tags="clazz", indent=0]
 
-<1> Define a custom validation group.
+<1> Define a custom validation group. This one extends `Default` so any validations done with this group will include constraints in the `Default` group.
 
 snippet::io.micronaut.docs.datavalidation.groups.Email[tags="clazz", indent=0]
 
@@ -15,8 +15,8 @@ snippet::io.micronaut.docs.datavalidation.groups.EmailController[tags="imports,c
 
 <1> Annotating with api:validation.Validated[] without specifying groups means that the `Default` group will be active. Since this is defined on the class, it will apply to all methods.
 <2> Constraints in the `Default` validation group will be enforced, inheriting from the class. The effect is that `@NotBlank` on `email.recipient` will not be enforced when this method is called.
-<3> Specifying `groups` means that these validation groups will be enforced when this method is called.
-<4> Constraints in the `Default` and `FinalValidation` validation groups will be enforced. The effect is that both `@NotBlank` constraints in `email` will be enforced when this method is called.
+<3> Specifying `groups` means that these validation groups will be enforced when this method is called.  Note that `FinalValidation` extends `Default` so constraints from both groups will be enforced.
+<4> Constraints in the `Default` and `FinalValidation` validation groups will be enforced, since `FinalValidation` extends `Default`. The effect is that both `@NotBlank` constraints in `email` will be enforced when this method is called.
 
 Validation of POJOs using the default validation group is shown in the following test:
 

test-suite-groovy/src/test/groovy/io/micronaut/docs/datavalidation/groups/EmailController.groovy

@@ -24,7 +24,6 @@ import io.micronaut.http.annotation.Post
 import io.micronaut.validation.Validated
 
 import javax.validation.Valid
-import javax.validation.groups.Default
 //end::imports[]
 
 @Requires(property = "spec.name", value = "datavalidationgroups")
@@ -39,7 +38,7 @@ class EmailController {
     }
 
     @Post("/send")
-    @Validated(groups = [Default, FinalValidation]) // <3>
+    @Validated(groups = [FinalValidation]) // <3>
     HttpResponse send(@Body @Valid Email email) { // <4>
         HttpResponse.ok(msg: "OK")
     }

test-suite-groovy/src/test/groovy/io/micronaut/docs/datavalidation/groups/FinalValidation.groovy

@@ -17,6 +17,8 @@ package io.micronaut.docs.datavalidation.groups;
 
 //tag::clazz[]
 
-interface FinalValidation {} // <1>
+import javax.validation.groups.Default
+
+interface FinalValidation extends Default {} // <1>
 
 //end::clazz[]

test-suite-kotlin/src/test/kotlin/io/micronaut/docs/datavalidation/groups/EmailController.kt

@@ -23,7 +23,6 @@ import io.micronaut.http.annotation.Controller
 import io.micronaut.http.annotation.Post
 import io.micronaut.validation.Validated
 import javax.validation.Valid
-import javax.validation.groups.Default
 //end::imports[]
 
 @Requires(property = "spec.name", value = "datavalidationgroups")
@@ -38,7 +37,7 @@ open class EmailController {
     }
 
     @Post("/send")
-    @Validated(groups = [Default::class, FinalValidation::class]) // <3>
+    @Validated(groups = FinalValidation::class) // <3>
     open fun send(@Body @Valid email: Email): HttpResponse<*> { // <4>
         return HttpResponse.ok(mapOf("msg" to "OK"))
     }

test-suite-kotlin/src/test/kotlin/io/micronaut/docs/datavalidation/groups/FinalValidation.kt

@@ -17,6 +17,8 @@ package io.micronaut.docs.datavalidation.groups
 
 //tag::clazz[]
 
-interface FinalValidation {} // <1>
+import javax.validation.groups.Default
+
+interface FinalValidation : Default() {} // <1>
 
 //end::clazz[]

test-suite/src/test/java/io/micronaut/docs/datavalidation/groups/EmailController.java

@@ -24,7 +24,6 @@
 import io.micronaut.validation.Validated;
 
 import javax.validation.Valid;
-import javax.validation.groups.Default;
 import java.util.Collections;
 //end::imports[]
 
@@ -40,7 +39,7 @@ public HttpResponse createDraft(@Body @Valid Email email) { // <2>
     }
 
     @Post("/send")
-    @Validated(groups = {Default.class, FinalValidation.class}) // <3>
+    @Validated(groups = FinalValidation.class) // <3>
     public HttpResponse send(@Body @Valid Email email) { // <4>
         return HttpResponse.ok(Collections.singletonMap("msg", "OK"));
     }

test-suite/src/test/java/io/micronaut/docs/datavalidation/groups/FinalValidation.java

@@ -17,6 +17,8 @@
 
 //tag::clazz[]
 
-public interface FinalValidation {} // <1>
+import javax.validation.groups.Default;
+
+public interface FinalValidation extends Default {} // <1>
 
 //end::clazz[]