    001    // Copyright 2010, 2011 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    package org.apache.tapestry5.ioc.annotations;
    015
    016    import java.lang.annotation.Documented;
    017    import java.lang.annotation.Retention;
    018    import java.lang.annotation.Target;
    019
    020    import static java.lang.annotation.ElementType.METHOD;
    021    import static java.lang.annotation.RetentionPolicy.RUNTIME;
    022
    023    /**
    024     * An annotation that may be placed on a contributor method of a module. The annotation may/should be used in combination with
    025     * {@link Marker} annotation to disambiguate the service to contribute into. This annotation was introduced as an alternative
    026     * to the naming convention for contributor methods.
    027     *
    028     * @see Optional
    029     * @since 5.2.0
    030     */
    031    @Target(METHOD)
    032    @Retention(RUNTIME)
    033    @Documented
    034    public @interface Contribute
    035    {
    036        /**
    037         * Type of the service to contribute into.
    038         */
    039        Class value();
    040    }