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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cassandra.utils;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Tells jvm-dtest that a class should be shared across all {@link ClassLoader}s.
*
* Jvm-dtest relies on classloader isolation to run multiple cassandra instances in the same JVM, this makes it
* so some classes do not get shared (outside a blesssed set of classes/packages). When the default behavior
* is not desirable, this annotation will tell jvm-dtest to share the class accross all class loaders.
*
* This is the oposite of {@link Isolated}.
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.TYPE })
public @interface Shared
{
enum Scope { ANY, SIMULATION }
enum Recursive { NONE, INTERFACES /*(and enums and exceptions) */, ALL }
Scope[] scope() default Scope.ANY;
Recursive inner() default Recursive.NONE;
Recursive ancestors() default Recursive.NONE;
Recursive members() default Recursive.NONE;
}