/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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 com.linkedin.pinot.core.operator.transform;
import com.linkedin.pinot.core.common.BlockValSet;
import com.linkedin.pinot.core.operator.blocks.ProjectionBlock;
import java.util.Map;
/**
* Interface for Transform expressions evaluation.
*
*/
public interface TransformExpressionEvaluator {
/**
* Evaluates a list of expressions on a given set of docIds.
* @param projectionBlock Projection block for which to evaluate the expression for.
* @return Map containing result for each transform expression.
*/
Map<String, BlockValSet> evaluate(ProjectionBlock projectionBlock);
}