[hibernate-issues] [Hibernate-JIRA] Issue Comment Edited: (BVAL-202) Apply constraints on the elements of an iterator
[
http://opensource.atlassian.com/projects/hibernate/browse/BVAL-202?page=c...
]
Emmanuel Bernard edited comment on BVAL-202 at 3/15/10 10:40 AM:
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Solution #4
add a new OnElements subannotation. This annotation should contain all the attribute of
its mother constraint annotation. .List should probably contains this annotation too.
{code}
@NotNull
@Size(max=30)
@Size.OnElements(max=50)
@Email.OnElements
Collection<String> emails;
{code}
where
{code}
public @interface Size {
String message() default {...};
int min default 0;
...
@interface OnElements {
String message() default {...};
int min default 0;
}
@interface List {
Size[] value();
@interface OnElements {
Size[] value();
}
}
{code}
advanced example
{code}
@Size.List.OnElements( {
@Size(max=30),
@Size(max=40, groups=Admin.class)
})
{code}
The drawback of this method is that:
- it requires to change existing applications
- it make creating a constraint pretty complex
was (Author: emmanuel):
Solution #4
add a new OnElements subannotation. This annotation should contain all the attribute of
its mother constraint annotation. .List should probably contains this annotation too.
[code]
@NotNull
@Size(max=30)
@Size.OnElements(max=50)
@Email.OnElements
Collection<String> emails;
[/code]
where
public @interface Size {
String message() default {...};
int min default 0;
...
@interface OnElements {
String message() default {...};
int min default 0;
}
@interface List {
Size[] value();
@interface OnElements {
Size[] value();
}
}
advanced example
@Size.List.OnElements( {
@Size(max=30),
@Size(max=40, groups=Admin.class)
})
The drawback of this method is that:
- it requires to change existing applications
- it make creating a constraint pretty complex
Apply constraints on the elements of an iterator
------------------------------------------------
Key: BVAL-202
URL: http://opensource.atlassian.com/projects/hibernate/browse/BVAL-202
Project: Bean Validation
Issue Type: New Feature
Components: spec-general
Reporter: Emmanuel Bernard
Assignee: Hardy Ferentschik
The use case is the ability to ask a constraint to be applied, not on the annotated
element itself but on the elements contained by the annotated element (typically an
Iterator). Hardy and I have been discussing various options. I will list them in various
comments
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