001/////////////////////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code and other text files for adherence to a set of rules. 003// Copyright (C) 2001-2024 the original author or authors. 004// 005// This library is free software; you can redistribute it and/or 006// modify it under the terms of the GNU Lesser General Public 007// License as published by the Free Software Foundation; either 008// version 2.1 of the License, or (at your option) any later version. 009// 010// This library is distributed in the hope that it will be useful, 011// but WITHOUT ANY WARRANTY; without even the implied warranty of 012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013// Lesser General Public License for more details. 014// 015// You should have received a copy of the GNU Lesser General Public 016// License along with this library; if not, write to the Free Software 017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018/////////////////////////////////////////////////////////////////////////////////////////////// 019 020package com.puppycrawl.tools.checkstyle.api; 021 022import java.util.Collections; 023import java.util.HashSet; 024import java.util.Set; 025 026/** 027 * A filter set applies filters to AuditEvents. 028 * If a filter in the set rejects an AuditEvent, then the 029 * AuditEvent is rejected. Otherwise, the AuditEvent is accepted. 030 */ 031public class FilterSet 032 implements Filter { 033 034 /** Filter set. */ 035 private final Set<Filter> filters = new HashSet<>(); 036 037 /** 038 * Adds a Filter to the set. 039 * 040 * @param filter the Filter to add. 041 */ 042 public void addFilter(Filter filter) { 043 filters.add(filter); 044 } 045 046 /** 047 * Removes filter. 048 * 049 * @param filter filter to remove. 050 */ 051 public void removeFilter(Filter filter) { 052 filters.remove(filter); 053 } 054 055 /** 056 * Returns the Filters of the filter set. 057 * 058 * @return the Filters of the filter set. 059 */ 060 public Set<Filter> getFilters() { 061 return Collections.unmodifiableSet(filters); 062 } 063 064 @Override 065 public String toString() { 066 return filters.toString(); 067 } 068 069 @Override 070 public boolean accept(AuditEvent event) { 071 boolean result = true; 072 for (Filter filter : filters) { 073 if (!filter.accept(event)) { 074 result = false; 075 break; 076 } 077 } 078 return result; 079 } 080 081 /** Clears the FilterSet. */ 082 public void clear() { 083 filters.clear(); 084 } 085 086}