001/**
002 * Copyright (C) 2006-2021 Talend Inc. - www.talend.com
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.talend.sdk.component.api.service.interceptor;
017
018import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
019import static java.lang.annotation.RetentionPolicy.RUNTIME;
020
021import java.lang.annotation.Retention;
022import java.lang.annotation.Target;
023
024/**
025 * Marks an annotation as being an interceptor marker.
026 * See also {@link InterceptorHandler} too.
027 */
028@Target(ANNOTATION_TYPE)
029@Retention(RUNTIME)
030public @interface Intercepts {
031
032    /**
033     * The handler to use for that marker.
034     * If not set an exception will be thrown.
035     *
036     * @return the handler class to use for that marker.
037     */
038    Class<? extends InterceptorHandler> value();
039
040    /**
041     * The interceptors are sorted by this number.
042     *
043     * @return the priority of the interceptor.
044     */
045    int priority() default 0;
046}