001/* 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2024, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014 015package ch.qos.logback.core.spi; 016 017/** 018 * An interface extending both {@link PropertyContainer} and {@link ContextAware} 019 * 020 * @since 1.5.1 021 */ 022public interface ContextAwarePropertyContainer extends PropertyContainer, ContextAware { 023 024 025 /** 026 * This method is used tp perform variable substitution. 027 * 028 * @param input 029 * @return a new string after variable substitution, if any. 030 */ 031 String subst(String input); 032 033}