    001    // Copyright 2008, 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.services;
    016
    017    import java.lang.annotation.Documented;
    018    import java.lang.annotation.ElementType;
    019    import java.lang.annotation.Retention;
    020    import java.lang.annotation.RetentionPolicy;
    021    import java.lang.annotation.Target;
    022
    023    /**
    024     * Marker annotation used to inject the correct {@link org.apache.tapestry5.services.InvalidationEventHub} service
    025     * responsible for invalidations when underlying component class files are changed.
    026     *
    027     * @since 5.1.0.0
    028     */
    029    @Target(
    030    { ElementType.PARAMETER, ElementType.FIELD, ElementType.METHOD })
    031    @Retention(RetentionPolicy.RUNTIME)
    032    @Documented
    033    public @interface ComponentClasses
    034    {
    035    }