    001    // Copyright 2007, 2008, 2009, 2010 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.beaneditor;
    016
    017    import static java.lang.annotation.RetentionPolicy.RUNTIME;
    018    import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.BEAN;
    019    import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.COMPONENT;
    020    import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.MIXIN;
    021    import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.PAGE;
    022
    023    import java.lang.annotation.Documented;
    024    import java.lang.annotation.ElementType;
    025    import java.lang.annotation.Retention;
    026    import java.lang.annotation.Target;
    027
    028    import org.apache.tapestry5.ioc.annotations.UseWith;
    029
    030    /**
    031     * Used to attach validation constraints directly to a property (either the getter or the setter method). The annotation
    032     * value is a comma separated list of <em>validation constraints</em>, each one identifying a validator type (such as
    033     * "required", "minlength") and optionally, a constraint value. Most validators need a constraint value, which is
    034     * separated from the type by an equals size (i.e., "maxlength=30"). In addition, the value may include
    035     * validator macros.
    036     * <p/>
    037     * May be placed on any getter or setter method, or on the matching field.
    038     *
    039     * @see Translate
    040     */
    041    @Target(
    042    { ElementType.FIELD, ElementType.METHOD })
    043    @Retention(RUNTIME)
    044    @Documented
    045    @UseWith(
    046    { BEAN, COMPONENT, MIXIN, PAGE })
    047    public @interface Validate
    048    {
    049        String value();
    050    }