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SpringValidatorAdapter allows for custom field name resolution

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Issue: SPR-14104
This commit is contained in:
Juergen Hoeller
2016-04-01 10:29:56 +02:00
parent 739ae8c045
commit 696dcb72a5
1 changed files with 20 additions and 5 deletions
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25
spring-context/src/main/java/org/springframework/validation/beanvalidation/SpringValidatorAdapter.java
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@@ -191,9 +191,9 @@ public class SpringValidatorAdapter implements SmartValidator, javax.validation.
* Return FieldError arguments for a validation error on the given field.
* Invoked for each violated constraint.
* <p>The default implementation returns a first argument indicating the field name
* (of type DefaultMessageSourceResolvable, with "objectName.field" and "field" as codes).
* Afterwards, it adds all actual constraint annotation attributes (i.e. excluding
* "message", "groups" and "payload") in alphabetical order of their attribute names.
* (see {@link #getResolvableField}). Afterwards, it adds all actual constraint
* annotation attributes (i.e. excluding "message", "groups" and "payload") in
* alphabetical order of their attribute names.
* <p>Can be overridden to e.g. add further attributes from the constraint descriptor.
* @param objectName the name of the target object
* @param field the field that caused the binding error
@@ -205,8 +205,7 @@ public class SpringValidatorAdapter implements SmartValidator, javax.validation.
*/
protected Object[] getArgumentsForConstraint(String objectName, String field, ConstraintDescriptor<?> descriptor) {
List<Object> arguments = new LinkedList<Object>();
String[] codes = new String[] {objectName + Errors.NESTED_PATH_SEPARATOR + field, field};
arguments.add(new DefaultMessageSourceResolvable(codes, field));
arguments.add(getResolvableField(objectName, field));
// Using a TreeMap for alphabetical ordering of attribute names
Map<String, Object> attributesToExpose = new TreeMap<String, Object>();
for (Map.Entry<String, Object> entry : descriptor.getAttributes().entrySet()) {
@@ -223,6 +222,22 @@ public class SpringValidatorAdapter implements SmartValidator, javax.validation.
return arguments.toArray(new Object[arguments.size()]);
}
/**
* Build a resolvable wrapper for the specified field, allowing to resolve the field's
* name in a {@code MessageSource}.
* <p>The default implementation returns a first argument indicating the field:
* of type {@code DefaultMessageSourceResolvable}, with "objectName.field" and "field"
* as codes, and with the plain field name as default message.
* @param objectName the name of the target object
* @param field the field that caused the binding error
* @return a corresponding {@code MessageSourceResolvable} for the specified field
* @since 4.3
*/
protected MessageSourceResolvable getResolvableField(String objectName, String field) {
String[] codes = new String[] {objectName + Errors.NESTED_PATH_SEPARATOR + field, field};
return new DefaultMessageSourceResolvable(codes, field);
}
/**
* Extract the rejected value behind the given constraint violation,
* for exposure through the Spring errors representation.