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/*
* 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.spark.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* A class that is considered private to the internals of Spark -- there is a high-likelihood
* they will be changed in future versions of Spark.
*
* This should be used only when the standard Scala / Java means of protecting classes are
* insufficient. In particular, Java has no equivalent of private[spark], so we use this annotation
* in its place.
*
* NOTE: If there exists a Scaladoc comment that immediately precedes this annotation, the first
* line of the comment must be ":: Private ::" with no trailing blank line. This is because
* of the known issue that Scaladoc displays only either the annotation or the comment, whichever
* comes first.
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER,
ElementType.CONSTRUCTOR, ElementType.LOCAL_VARIABLE, ElementType.PACKAGE})
public @interface Private {}
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