1 /////////////////////////////////////////////////////////////////////////////////////////////// 2 // checkstyle: Checks Java source code and other text files for adherence to a set of rules. 3 // Copyright (C) 2001-2024 the original author or authors. 4 // 5 // This library is free software; you can redistribute it and/or 6 // modify it under the terms of the GNU Lesser General Public 7 // License as published by the Free Software Foundation; either 8 // version 2.1 of the License, or (at your option) any later version. 9 // 10 // This library is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 // Lesser General Public License for more details. 14 // 15 // You should have received a copy of the GNU Lesser General Public 16 // License along with this library; if not, write to the Free Software 17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 /////////////////////////////////////////////////////////////////////////////////////////////// 19 20 package com.puppycrawl.tools.checkstyle.api; 21 22 import java.util.Collection; 23 24 /** 25 * A context to be used in subcomponents. The general idea of 26 * Context/Contextualizable was taken from <a target="_top" 27 * href="https://avalon.apache.org/closed.html">Jakarta's Avalon framework</a>. 28 * 29 * @see Contextualizable 30 */ 31 public interface Context { 32 33 /** 34 * Searches for the value with the specified attribute key in this context. 35 * 36 * @param key the attribute key. 37 * @return the value in this context with the specified attribute key value. 38 */ 39 Object get(String key); 40 41 /** 42 * Returns the names of all attributes of this context. 43 * 44 * @return the names of all attributes of this context. 45 */ 46 Collection<String> getAttributeNames(); 47 48 }