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How can we ensure the individual strings inside a list are not null/blank or follow a specific pattern
@NotNull
List<String> emailIds;
I also want to add a pattern
@Pattern("\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b.")
but I can live without it.But I would definitely like to have a constraint which will check if any strings inside a list are null or blank. Also how would the Json schema look like
"ids": {
"description": "The ids associated with this.",
"type": "array",
"minItems": 1,
"items": {
"type": "string",
"required" :true }
}
"required" :true does not seem to do the job
344
Your list subclass would look something like this: public class ValidList<E> implements List<E> { @Valid private List<E> list; public ValidList() { this. list = new ArrayList<E>(); } public ValidList(List<E> list) { this. list = list; } // Bean-like methods, used by javax.
@NotNull : The CharSequence, Collection, Map or Array object is not null, but can be empty. @NotEmpty : The CharSequence, Collection, Map or Array object is not null and size > 0. @NotBlank : The string is not null and the trimmed length is greater than zero.
@NotNull: a constrained CharSequence, Collection, Map, or Array is valid as long as it's not null, but it can be empty. @NotEmpty: a constrained CharSequence, Collection, Map, or Array is valid as long as it's not null, and its size/length is greater than zero.
Bean validation 2.0 (Hibernate Validator 6.0.1 and above) supports validating container elements by annotating type arguments of parameterized types. Example:
List<@Positive Integer> positiveNumbers;
Or even (although a bit busy):
List<@NotNull @Pattern(regexp="\\b[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}\\b") String> emails;
References:
131
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