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}