it.cnr.iit.jscontact.tools.dto.utils.ConstraintViolationUtils Maven / Gradle / Ivy

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package it.cnr.iit.jscontact.tools.dto.utils;

import javax.validation.ConstraintViolation;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * Utility class for handling messages about constraint violations.
 *
 * @author Mario Loffredo
 */
public class ConstraintViolationUtils {

    /**
     * Returns a text message including all the constraint violations returned by a validation process and separated by newline.
     *
     * @param  a generic type a constraint is set on
     * @param constraintViolations the set of constraint violations
     * @return the text message
     */
    public static  String getMessage(Set> constraintViolations) {

        List messages = new ArrayList<>();
        for(ConstraintViolation constraintViolation : constraintViolations)
            messages.add(constraintViolation.getMessage());

        return String.join(DelimiterUtils.NEWLINE_DELIMITER, messages);
    }

}