com.hazelcast.sql.impl.expression.ExpressionEvalContext Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.sql.impl.expression;
/**
* Defines expression evaluation context contract for SQL {@link Expression
* expressions}.
*
* @see Expression#eval
*/
public interface ExpressionEvalContext {
/**
* @param index Argument index.
* @return The query argument.
*/
Object getArgument(int index);
}