001/*
002 * ====================================================================
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *   http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing,
014 * software distributed under the License is distributed on an
015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
016 * KIND, either express or implied.  See the License for the
017 * specific language governing permissions and limitations
018 * under the License.
019 * ====================================================================
020 *
021 * This software consists of voluntary contributions made by many
022 * individuals on behalf of the Apache Software Foundation.  For more
023 * information on the Apache Software Foundation, please see
024 * <http://www.apache.org/>.
025 *
026 */
027package org.apache.http.annotation;
028
029import java.lang.annotation.Documented;
030import java.lang.annotation.ElementType;
031import java.lang.annotation.Retention;
032import java.lang.annotation.RetentionPolicy;
033import java.lang.annotation.Target;
034
035/**
036 * This annotation defines behavioral contract enforced at runtime by instances of annotated classes.
037 */
038@Documented
039@Target(ElementType.TYPE)
040@Retention(RetentionPolicy.CLASS)
041public @interface Contract {
042
043    ThreadingBehavior threading() default ThreadingBehavior.UNSAFE;
044
045}