001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.apache.hadoop.registry.client.exceptions;
020    
021    import org.apache.hadoop.classification.InterfaceAudience;
022    import org.apache.hadoop.classification.InterfaceStability;
023    
024    /**
025     * This is a manifestation of the Zookeeper restrictions about
026     * what nodes may act as parents.
027     *
028     * Children are not allowed under ephemeral nodes. This is an aspect
029     * of ZK which isn't directly exposed to the registry API. It may
030     * surface if the registry is manipulated outside of the registry API.
031     */
032    @InterfaceAudience.Public
033    @InterfaceStability.Evolving
034    public class NoChildrenForEphemeralsException extends RegistryIOException {
035      public NoChildrenForEphemeralsException(String path, Throwable cause) {
036        super(path, cause);
037      }
038    
039      public NoChildrenForEphemeralsException(String path, String error) {
040        super(path, error);
041      }
042    
043      public NoChildrenForEphemeralsException(String path,
044          String error,
045          Throwable cause) {
046        super(path, error, cause);
047      }
048    }