@@ -0,0 +1,3157 @@
+/*******************************************************************************%0A * MIT License%0A *%0A * Copyright (c) 2017 Piotr Rusin %3Cpiotr.rusin88@gmail.com%3E%0A *%0A * Permission is hereby granted, free of charge, to any person obtaining a copy%0A * of this software and associated documentation files (the %22Software%22), to deal%0A * in the Software without restriction, including without limitation the rights%0A * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell%0A * copies of the Software, and to permit persons to whom the Software is%0A * furnished to do so, subject to the following conditions:%0A *%0A * The above copyright notice and this permission notice shall be included in all%0A * copies or substantial portions of the Software.%0A *%0A * THE SOFTWARE IS PROVIDED %22AS IS%22, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR%0A * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,%0A * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE%0A * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER%0A * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,%0A * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE%0A * SOFTWARE.%0A *******************************************************************************/%0Apackage com.github.piotr_rusin.yule.validation;%0A%0Aimport com.github.piotr_rusin.yule.domain.Article;%0A%0A/**%0A * A testable constraint for an article object, associated with one of%0A * its fields and a violation message template.%0A *%0A * @author Piotr Rusin %3Cpiotr.rusin88@gmail.com%3E%0A *%0A */%0Aabstract public class ExistingArticleConstraint %7B%0A    private String propertyName;%0A    protected String violationMessageTemplate;%0A%0A    /**%0A     * Create a new constraint.%0A     *%0A     * @param propertyName%0A     *            is a name of a property associated with the constraint%0A     * @param violationMessageTemplate%0A     *            is a message template associated with a violation of%0A     *            the constraint%0A     */%0A    protected ExistingArticleConstraint(String propertyName, String violationMessageTemplate) %7B%0A        this.propertyName = propertyName;%0A        this.violationMessageTemplate = violationMessageTemplate;%0A    %7D%0A%0A    /**%0A     * Get the name of a property associated with this constraint.%0A     *%0A     * @return the name of the property%0A     */%0A    public String getPropertyName() %7B%0A        return propertyName;%0A    %7D%0A%0A    /**%0A     * Get the message template associated with a violation of this%0A     * constraint.%0A     *%0A     * @return the message template%0A     */%0A    public String getViolationMessageTemplate() %7B%0A        return violationMessageTemplate;%0A    %7D%0A%0A    /**%0A     * Check if an article fulfills the constraint.%0A     *%0A     * @param article%0A     *            is an article to be checked%0A     * @return true if the article is not null and fulfills the%0A     *         constraint%0A     */%0A    public boolean isFulfilledFor(Article article) %7B%0A        if (article == null)%0A            return false;%0A        return isFulfilledForExisting(article);%0A    %7D%0A%0A    protected abstract boolean isFulfilledForExisting(Article article);%0A%7D%0A

Add ExistingArticleConstraint class