1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.log4j.lf5.viewer.categoryexplorer;
18
19 import org.apache.log4j.lf5.LogRecord;
20 import org.apache.log4j.lf5.LogRecordFilter;
21
22 import java.util.Enumeration;
23
24 /**
25 * An implementation of LogRecordFilter based on a CategoryExplorerModel
26 *
27 * @author Richard Wan
28 */
29
30 // Contributed by ThoughtWorks Inc.
31
32 public class CategoryExplorerLogRecordFilter implements LogRecordFilter {
33 //--------------------------------------------------------------------------
34 // Constants:
35 //--------------------------------------------------------------------------
36
37 //--------------------------------------------------------------------------
38 // Protected Variables:
39 //--------------------------------------------------------------------------
40
41 protected CategoryExplorerModel _model;
42
43 //--------------------------------------------------------------------------
44 // Private Variables:
45 //--------------------------------------------------------------------------
46
47 //--------------------------------------------------------------------------
48 // Constructors:
49 //--------------------------------------------------------------------------
50
51 public CategoryExplorerLogRecordFilter(CategoryExplorerModel model) {
52 _model = model;
53 }
54
55 //--------------------------------------------------------------------------
56 // Public Methods:
57 //--------------------------------------------------------------------------
58
59 /**
60 * @return true if the CategoryExplorer model specified at construction
61 * is accepting the category of the specified LogRecord. Has a side-effect
62 * of adding the CategoryPath of the LogRecord to the explorer model
63 * if the CategoryPath is new.
64 */
65 public boolean passes(LogRecord record) {
66 CategoryPath path = new CategoryPath(record.getCategory());
67 return _model.isCategoryPathActive(path);
68 }
69
70 /**
71 * Resets the counters for the contained CategoryNodes to zero.
72 */
73 public void reset() {
74 resetAllNodes();
75 }
76
77 //--------------------------------------------------------------------------
78 // Protected Methods:
79 //--------------------------------------------------------------------------
80
81 protected void resetAllNodes() {
82 Enumeration nodes = _model.getRootCategoryNode().depthFirstEnumeration();
83 CategoryNode current;
84 while (nodes.hasMoreElements()) {
85 current = (CategoryNode) nodes.nextElement();
86 current.resetNumberOfContainedRecords();
87 _model.nodeChanged(current);
88 }
89 }
90 //--------------------------------------------------------------------------
91 // Private Methods:
92 //--------------------------------------------------------------------------
93
94 //--------------------------------------------------------------------------
95 // Nested Top-Level Classes or Interfaces
96 //--------------------------------------------------------------------------
97 }
98
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