pinot-core/src/main/java/org/apache/pinot/core/query/reduce/filter/ValueExtractorFactory.java

/**
 * 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.pinot.core.query.reduce.filter;

import org.apache.pinot.common.request.context.ExpressionContext;


/**
 * Factory for {@link ValueExtractor}.
 */
public interface ValueExtractorFactory {

  /**
   * Create the {@link ValueExtractor} for specific column.
   *
   * @param expression - column expression
   * @return {@link ValueExtractor}
   */
  ValueExtractor getValueExtractor(ExpressionContext expression);
}