001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.configuration2.builder;
018
019import org.apache.commons.configuration2.tree.ExpressionEngine;
020
021/**
022 * <p>
023 * Definition of a parameters interface for hierarchical configurations.
024 * </p>
025 * <p>
026 * This interface defines set methods for additional properties common to all hierarchical configurations.
027 * </p>
028 * <p>
029 * <strong>Important note:</strong> This interface is not intended to be implemented by client code! It defines a set of
030 * available properties and may be extended even in minor releases.
031 * </p>
032 *
033 * @since 2.0
034 * @param <T> the type of the result of all set methods for method chaining
035 */
036public interface HierarchicalBuilderProperties<T> {
037    /**
038     * Sets the {@code ExpressionEngine} to be used when querying the configuration.
039     *
040     * @param engine the {@code ExpressionEngine}
041     * @return a reference to this object for method chaining
042     */
043    T setExpressionEngine(ExpressionEngine engine);
044}