La validation des données est une autre fonctionnalité importante dont ont besoin les API. Elle permet de s'assurer
que les données sont valides, compte tenu de certains paramètres. Par exemple, qu'un champ est un `int`, et non un
string.
Ceci est particulièrement utile pour les données entrantes.

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.validation;

import javax.validation.ConstraintDefinitionException;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.util.ComponentUtil;

Another big feature needed by APIs is data validation, making sure that the data is valid, given certain parameters. For example, that some field is an `int`, and not some random string. This is especially useful for incoming data.

Without a data validation system, you would have to do all the checks by hand, in code.

import java.lang.annotation.Target;

import javax.validation.Constraint;
import javax.validation.Payload;

import org.codelibs.core.lang.StringUtil;

@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = CustomSizeValidator.class)
public @interface CustomSize {

    String message() default "{javax.validation.constraints.Size.message}";

 */
package org.codelibs.fess.app.web.admin.general;

import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.Size;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

/**
 * @author shinsuke
 * @author Shunji Makino
 */
public class EditForm {

 */
package org.codelibs.fess.app.web.admin.relatedcontent;

import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.Size;

import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

public class CreateForm {

 */
package org.codelibs.fess.app.web.admin.accesstoken;

import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;

import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.validation.CustomSize;
import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

public class CreateForm {

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.labeltype;

import javax.validation.constraints.Size;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

/**
 * @author Keiichi Watanabe
 */
public class EditForm extends CreateForm {

    @Required
    @Size(max = 1000)

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.pathmap;

import javax.validation.constraints.Size;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

/**
 * @author Keiichi Watanabe
 */
public class EditForm extends CreateForm {

    @Required
    @Size(max = 1000)

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.user;

import javax.validation.constraints.Size;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

/**
 * @author Keiichi Watanabe
 */
public class EditForm extends CreateForm {

    @Required
    @Size(max = 1000)