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 015package org.apache.tapestry5.internal.beaneditor; 016 017import org.apache.tapestry5.ioc.AnnotationProvider; 018import org.apache.tapestry5.services.ValidationConstraintGenerator; 019 020import java.util.Arrays; 021import 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 */ 026public 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}