    001// Licensed under the Apache License, Version 2.0 (the "License");
    002// you may not use this file except in compliance with the License.
    003// You may obtain a copy of the License at
    004//
    005//     http://www.apache.org/licenses/LICENSE-2.0
    006//
    007// Unless required by applicable law or agreed to in writing, software
    008// distributed under the License is distributed on an "AS IS" BASIS,
    009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    010// See the License for the specific language governing permissions and
    011// limitations under the License.
    012
    013package org.apache.tapestry5.ioc.annotations;
    014
    015import java.lang.annotation.Documented;
    016import java.lang.annotation.ElementType;
    017import java.lang.annotation.Retention;
    018import java.lang.annotation.RetentionPolicy;
    019import java.lang.annotation.Target;
    020
    021/**
    022 * A documentation-only interface placed on service interfaces for services which have a
    023 * <a href="https://tapestry.apache.org/current/apidocs/org/apache/tapestry5/commons/MappedConfiguration.html">mapped configuration</a>, to identify the type of key (often, a String),
    024 * and type of contribution.
    025 *
    026 * Remember that when the key type is String, the map will be case-insensitive.
    027 */
    028@Target(ElementType.TYPE)
    029@Retention(RetentionPolicy.CLASS)
    030@Documented
    031@UseWith(AnnotationUseContext.SERVICE)
    032public @interface UsesMappedConfiguration
    033{
    034    /**
    035     * The type of key used to identify contribution values.
    036     */
    037    Class key() default String.class;
    038
    039    /**
    040     * The type of object which may be contributed into the service's configuration.
    041     */
    042    Class value();
    043}