1 /* 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 */ 19 20 package org.apache.hadoop.hbase.rest.model; 21 22 import java.io.IOException; 23 import java.io.Serializable; 24 import java.util.ArrayList; 25 import java.util.List; 26 27 import javax.xml.bind.annotation.XmlAccessType; 28 import javax.xml.bind.annotation.XmlAccessorType; 29 import javax.xml.bind.annotation.XmlElement; 30 import javax.xml.bind.annotation.XmlRootElement; 31 32 import org.apache.hadoop.hbase.NamespaceDescriptor; 33 import org.apache.hadoop.hbase.classification.InterfaceAudience; 34 import org.apache.hadoop.hbase.client.Admin; 35 import org.apache.hadoop.hbase.rest.ProtobufMessageHandler; 36 import org.apache.hadoop.hbase.rest.protobuf.generated.NamespacesMessage.Namespaces; 37 import org.codehaus.jackson.annotate.JsonProperty; 38 39 40 /** 41 * A list of HBase namespaces. 42 * <ul> 43 * <li>Namespace: namespace name</li> 44 * </ul> 45 */ 46 @XmlRootElement(name="Namespaces") 47 @XmlAccessorType(XmlAccessType.FIELD) 48 @InterfaceAudience.Private 49 public class NamespacesModel implements Serializable, ProtobufMessageHandler { 50 51 private static final long serialVersionUID = 1L; 52 53 @JsonProperty("Namespace") 54 @XmlElement(name="Namespace") 55 private List<String> namespaces = new ArrayList<String>(); 56 57 /** 58 * Default constructor. Do not use. 59 */ NamespacesModel()60 public NamespacesModel() {} 61 62 /** 63 * Constructor 64 * @param admin the administrative API 65 * @throws IOException 66 */ NamespacesModel(Admin admin)67 public NamespacesModel(Admin admin) throws IOException { 68 NamespaceDescriptor[] nds = admin.listNamespaceDescriptors(); 69 namespaces = new ArrayList<String>(); 70 for (NamespaceDescriptor nd : nds) { 71 namespaces.add(nd.getName()); 72 } 73 } 74 75 /** 76 * @return all namespaces 77 */ getNamespaces()78 public List<String> getNamespaces() { 79 return namespaces; 80 } 81 82 /** 83 * @param namespaces the namespace name array 84 */ setNamespaces(List<String> namespaces)85 public void setNamespaces(List<String> namespaces) { 86 this.namespaces = namespaces; 87 } 88 89 /* (non-Javadoc) 90 * @see java.lang.Object#toString() 91 */ 92 @Override toString()93 public String toString() { 94 StringBuilder sb = new StringBuilder(); 95 for (String namespace : namespaces) { 96 sb.append(namespace); 97 sb.append("\n"); 98 } 99 return sb.toString(); 100 } 101 102 @Override createProtobufOutput()103 public byte[] createProtobufOutput() { 104 Namespaces.Builder builder = Namespaces.newBuilder(); 105 builder.addAllNamespace(namespaces); 106 return builder.build().toByteArray(); 107 } 108 109 @Override getObjectFromMessage(byte[] message)110 public ProtobufMessageHandler getObjectFromMessage(byte[] message) throws IOException { 111 Namespaces.Builder builder = Namespaces.newBuilder(); 112 builder.mergeFrom(message); 113 namespaces = builder.getNamespaceList(); 114 return this; 115 } 116 } 117