/**
* 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.mapreduce;
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.conf.Configurable;
import org.apache.hadoop.hbase.Tag;
/**
* Interface to convert visibility expressions into Tags for storing along with Cells in HFiles.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public interface VisibilityExpressionResolver extends Configurable {
/**
* Giving a chance for the initialization.
*/
void init();
/**
* Convert visibility expression into tags to be serialized.
* @param visExpression the label expression
* @return The list of tags corresponds to the visibility expression. These tags will be stored
* along with the Cells.
*/
List<Tag> createVisibilityExpTags(String visExpression) throws IOException;
}