JavaServer Faces provides the following tags for validating values of input components. These tags can be used with the composite:valueHolder or the composite:editableValueHolder tag.
Table 12-2 lists commonly used validator tags.
Table 12-2 Validator Tags
Tag Name
Description
Delegates the validation of the local value to the Bean Validation API.
Uses the pattern attribute to validate the wrapping component. The entire pattern is matched against the String value of the component. If it matches, it is valid.
Enforces the presence of a value. Has the same effect as setting the required element of a composite component’s attribute to true.
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