1 /* 2 * Logback: the reliable, generic, fast and flexible logging framework. 3 * Copyright (C) 1999-2024, QOS.ch. All rights reserved. 4 * 5 * This program and the accompanying materials are dual-licensed under 6 * either the terms of the Eclipse Public License v1.0 as published by 7 * the Eclipse Foundation 8 * 9 * or (per the licensee's choosing) 10 * 11 * under the terms of the GNU Lesser General Public License version 2.1 12 * as published by the Free Software Foundation. 13 */ 14 15 package ch.qos.logback.core.spi; 16 17 /** 18 * An interface extending both {@link PropertyContainer} and {@link ContextAware} 19 * 20 * @since 1.5.1 21 */ 22 public interface ContextAwarePropertyContainer extends PropertyContainer, ContextAware { 23 24 25 /** 26 * This method is used tp perform variable substitution. 27 * 28 * @param input 29 * @return a new string after variable substitution, if any. 30 */ 31 String subst(String input); 32 33 }