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/*
 * #!
 * Ontopia DB2TM
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * 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.ontopia.topicmaps.db2tm;

/**
 * INTERNAL: Interface for extracting values from tuples. This
 * interfaces is, amongs other things, the basis for virtual column
 * implementations. The value is usually the result of processing the
 * values of the current tuple.
 */
public interface ValueIF {

  /**
   * INTERNAL: Returns the value of the virtual column.
   */
  String getValue(String[] tuple);

}