JSR-303 SpringValidatorAdapter uses field name as first argument (analogous to bind errors; SPR-6407)

Author: jhoeller

org.springframework.context/src/main/java/org/springframework/validation/DefaultBindingErrorProcessor.java

@@ -78,9 +78,10 @@ public void processPropertyAccessException(PropertyAccessException ex, BindingRe
 
 	/**
 	 * Return FieldError arguments for a binding error on the given field.
-	 * Invoked for each missing required fields and each type mismatch.
-	 * <p>Default implementation returns a DefaultMessageSourceResolvable
-	 * with "objectName.field" and "field" as codes.
+	 * Invoked for each missing required field and each type mismatch.
+	 * <p>The default implementation returns a single argument of type
+	 * DefaultMessageSourceResolvable, with "objectName.field" and "field" as codes.
+	 * @param objectName the name of the target object
 	 * @param field the field that caused the binding error
 	 * @return the Object array that represents the FieldError arguments
 	 * @see org.springframework.validation.FieldError#getArguments

org.springframework.context/src/main/java/org/springframework/validation/beanvalidation/SpringValidatorAdapter.java

@@ -16,10 +16,14 @@
 
 package org.springframework.validation.beanvalidation;
 
+import java.util.LinkedList;
+import java.util.List;
 import java.util.Set;
 import javax.validation.ConstraintViolation;
 import javax.validation.metadata.BeanDescriptor;
+import javax.validation.metadata.ConstraintDescriptor;
 
+import org.springframework.context.support.DefaultMessageSourceResolvable;
 import org.springframework.util.Assert;
 import org.springframework.validation.Errors;
 import org.springframework.validation.FieldError;
@@ -74,12 +78,33 @@ public void validate(Object target, Errors errors) {
 			if (fieldError == null || !fieldError.isBindingFailure()) {
 				errors.rejectValue(field,
 						violation.getConstraintDescriptor().getAnnotation().annotationType().getSimpleName(),
-						violation.getConstraintDescriptor().getAttributes().values().toArray(),
+						getArgumentsForConstraint(errors.getObjectName(), field, violation.getConstraintDescriptor()),
 						violation.getMessage());
 			}
 		}
 	}
 
+	/**
+	 * Return FieldError arguments for a validation error on the given field.
+	 * Invoked for each violated constraint.
+	 * <p>The default implementation returns a single argument of type
+	 * DefaultMessageSourceResolvable, with "objectName.field" and "field" as codes.
+	 * @param objectName the name of the target object
+	 * @param field the field that caused the binding error
+	 * @param descriptor the JSR-303 constraint descriptor
+	 * @return the Object array that represents the FieldError arguments
+	 * @see org.springframework.validation.FieldError#getArguments
+	 * @see org.springframework.context.support.DefaultMessageSourceResolvable
+	 * @see org.springframework.validation.DefaultBindingErrorProcessor#getArgumentsForBindError
+	 */
+	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.addAll(descriptor.getAttributes().values());
+		return arguments.toArray(new Object[arguments.size()]);
+	}
+
 
 	//---------------------------------------------------------------------
 	// Implementation of JSR-303 Validator interface