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.Collections;
23 import java.util.HashSet;
24 import java.util.Set;
25
26 /**
27 * A filter set applies filters to AuditEvents.
28 * If a filter in the set rejects an AuditEvent, then the
29 * AuditEvent is rejected. Otherwise, the AuditEvent is accepted.
30 */
31 public class FilterSet
32 implements Filter {
33
34 /** Filter set. */
35 private final Set<Filter> filters = new HashSet<>();
36
37 /**
38 * Adds a Filter to the set.
39 *
40 * @param filter the Filter to add.
41 */
42 public void addFilter(Filter filter) {
43 filters.add(filter);
44 }
45
46 /**
47 * Removes filter.
48 *
49 * @param filter filter to remove.
50 */
51 public void removeFilter(Filter filter) {
52 filters.remove(filter);
53 }
54
55 /**
56 * Returns the Filters of the filter set.
57 *
58 * @return the Filters of the filter set.
59 */
60 public Set<Filter> getFilters() {
61 return Collections.unmodifiableSet(filters);
62 }
63
64 @Override
65 public String toString() {
66 return filters.toString();
67 }
68
69 @Override
70 public boolean accept(AuditEvent event) {
71 boolean result = true;
72 for (Filter filter : filters) {
73 if (!filter.accept(event)) {
74 result = false;
75 break;
76 }
77 }
78 return result;
79 }
80
81 /** Clears the FilterSet. */
82 public void clear() {
83 filters.clear();
84 }
85
86 }