Java tutorial
/** * Copyright 2011 The Apache Software Foundation * * 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 com.cloudera.hadoop.hdfs.nfs.nfs4.attrs; import java.io.IOException; import org.apache.hadoop.fs.FileStatus; import org.apache.hadoop.fs.FileSystem; import com.cloudera.hadoop.hdfs.nfs.NFSUtils; import com.cloudera.hadoop.hdfs.nfs.nfs4.NFS4Handler; import com.cloudera.hadoop.hdfs.nfs.nfs4.Session; import com.cloudera.hadoop.hdfs.nfs.nfs4.StateID; public class OwnerGroupHandler extends AttributeHandler<OwnerGroup> { @Override public OwnerGroup get(NFS4Handler server, Session session, FileSystem fs, FileStatus fileStatus) { OwnerGroup ownerGroup = new OwnerGroup(); String domain = NFSUtils.getDomain(session.getConfiguration(), session.getClientAddress()); ownerGroup.setOwnerGroup(fileStatus.getGroup() + "@" + domain); return ownerGroup; } @Override public boolean set(NFS4Handler server, Session session, FileSystem fs, FileStatus fileStatus, StateID stateID, OwnerGroup attr) throws IOException { String group = OwnerHandler.removeDomain(attr.getOwnerGroup()); if (fileStatus.getGroup().equals(group)) { fs.setOwner(fileStatus.getPath(), null, group); return true; } return false; } }