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
027 * hierarchical configurations.
028 * </p>
029 * <p>
030 * <strong>Important note:</strong> This interface is not intended to be
031 * implemented by client code! It defines a set of available properties and may
032 * be extended even in minor releases.
033 * </p>
034 *
035 * @since 2.0
036 * @param <T> the type of the result of all set methods for method chaining
037 */
038public interface HierarchicalBuilderProperties<T>
039{
040    /**
041     * Sets the {@code ExpressionEngine} to be used when querying the
042     * configuration.
043     *
044     * @param engine the {@code ExpressionEngine}
045     * @return a reference to this object for method chaining
046     */
047    T setExpressionEngine(ExpressionEngine engine);
048}