/** * Copyright 2011 meltmedia * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.xchain.annotations; import static java.lang.annotation.ElementType.TYPE; import static java.lang.annotation.RetentionPolicy.RUNTIME; import java.lang.annotation.Documented; import java.lang.annotation.Inherited; import java.lang.annotation.Retention; import java.lang.annotation.Target; /** * An annotation to indicate that the given class is optional. XChains should * not fail to load if a class that is marked as optional has any undefined * dependencies. This is to accommodate optional maven dependencies. * * @author Devon Tackett * */ @Target(TYPE) @Retention(RUNTIME) @Inherited @Documented public @interface Optional { }