/** * 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.hadoop.hbase; import java.io.FileNotFoundException; import java.io.IOException; import java.util.Map; /** * Get, remove and modify table descriptors. * Used by servers to host descriptors. */ public interface TableDescriptors { /** * @param tablename * @return HTableDescriptor for tablename * @throws TableExistsException * @throws FileNotFoundException * @throws IOException */ public HTableDescriptor get(final String tablename) throws FileNotFoundException, IOException; /** * @param tablename * @return HTableDescriptor for tablename * @throws TableExistsException * @throws FileNotFoundException * @throws IOException */ public HTableDescriptor get(final byte[] tablename) throws FileNotFoundException, IOException; /** * Get Map of all HTableDescriptors. Populates the descriptor cache as a * side effect. * @return Map of all descriptors. * @throws IOException */ public Map<String, HTableDescriptor> getAll() throws IOException; /** * Add or update descriptor * @param htd Descriptor to set into TableDescriptors * @throws IOException */ public void add(final HTableDescriptor htd) throws IOException; /** * @param tablename * @return Instance of table descriptor or null if none found. * @throws IOException */ public HTableDescriptor remove(final String tablename) throws IOException; }