/**
* Copyright 2009 the original author or authors.
*
* Licensed 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 net.sf.katta.lib.mapfile;
import java.io.IOException;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.ipc.VersionedProtocol;
/**
* Interface for the client calls that will arrive via Hadoop RPC.
*
* This server looks up Text entries from MapFiles using Text keys.
*/
public interface IMapFileServer extends VersionedProtocol {
/**
* Get all the occurrences of the given Text key. There could be
* up to one entry per shard.
*
* @param key The key to search for.
* @param shards Which MapFile shards to look in.
* @return The list of Text results.
* @throws IOException If an error occurs.
*/
public TextArrayWritable get(Text key, String[] shards) throws IOException;
}