/**
* 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;
}