/**
* 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.hive.metastore.hbase;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;
public interface MetadataStore {
/**
* @param fileIds file ID list.
* @param result The ref parameter, used to return the serialized file metadata.
*/
void getFileMetadata(List<Long> fileIds, ByteBuffer[] result) throws IOException;
/**
* @param fileIds file ID list.
* @param metadataBuffers Serialized file metadata, one per file ID.
* @param addedCols The column names for additional columns created by file-format-specific
* metadata handler, to be stored in the cache.
* @param addedVals The values for addedCols; one value per file ID per added column.
*/
void storeFileMetadata(List<Long> fileIds, List<ByteBuffer> metadataBuffers,
ByteBuffer[] addedCols, ByteBuffer[][] addedVals) throws IOException, InterruptedException;
/**
* @param fileId The file ID.
* @param metadataBuffers Serialized file metadata.
* @param addedCols The column names for additional columns created by file-format-specific
* metadata handler, to be stored in the cache.
* @param addedVals The values for addedCols; one value per added column.
*/
void storeFileMetadata(long fileId, ByteBuffer metadata, ByteBuffer[] addedCols,
ByteBuffer[] addedVals) throws IOException, InterruptedException;
}