    001    // Copyright 2007 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    //     http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.internal.beaneditor;
    016
    017    import org.apache.tapestry5.ioc.AnnotationProvider;
    018    import org.apache.tapestry5.services.ValidationConstraintGenerator;
    019
    020    import java.util.Arrays;
    021    import java.util.List;
    022
    023    /**
    024     * Adds a "required" constraint for any property of whose type is a primitive (not a wrapper or reference) type.
    025     */
    026    public class PrimitiveFieldConstraintGenerator implements ValidationConstraintGenerator
    027    {
    028        private final List<String> REQUIRED = Arrays.asList("required");
    029
    030        public List<String> buildConstraints(Class propertyType, AnnotationProvider annotationProvider)
    031        {
    032            return propertyType.isPrimitive() ? REQUIRED : null;
    033        }
    034
    035    }