001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.log4j.lf5.viewer.categoryexplorer; 018 019import org.apache.log4j.lf5.LogRecord; 020import org.apache.log4j.lf5.LogRecordFilter; 021 022import java.util.Enumeration; 023 024/** 025 * An implementation of LogRecordFilter based on a CategoryExplorerModel 026 * 027 * @author Richard Wan 028 */ 029 030// Contributed by ThoughtWorks Inc. 031 032public class CategoryExplorerLogRecordFilter implements LogRecordFilter { 033 //-------------------------------------------------------------------------- 034 // Constants: 035 //-------------------------------------------------------------------------- 036 037 //-------------------------------------------------------------------------- 038 // Protected Variables: 039 //-------------------------------------------------------------------------- 040 041 protected CategoryExplorerModel _model; 042 043 //-------------------------------------------------------------------------- 044 // Private Variables: 045 //-------------------------------------------------------------------------- 046 047 //-------------------------------------------------------------------------- 048 // Constructors: 049 //-------------------------------------------------------------------------- 050 051 public CategoryExplorerLogRecordFilter(CategoryExplorerModel model) { 052 _model = model; 053 } 054 055 //-------------------------------------------------------------------------- 056 // Public Methods: 057 //-------------------------------------------------------------------------- 058 059 /** 060 * @return true if the CategoryExplorer model specified at construction 061 * is accepting the category of the specified LogRecord. Has a side-effect 062 * of adding the CategoryPath of the LogRecord to the explorer model 063 * if the CategoryPath is new. 064 */ 065 public boolean passes(LogRecord record) { 066 CategoryPath path = new CategoryPath(record.getCategory()); 067 return _model.isCategoryPathActive(path); 068 } 069 070 /** 071 * Resets the counters for the contained CategoryNodes to zero. 072 */ 073 public void reset() { 074 resetAllNodes(); 075 } 076 077 //-------------------------------------------------------------------------- 078 // Protected Methods: 079 //-------------------------------------------------------------------------- 080 081 protected void resetAllNodes() { 082 Enumeration nodes = _model.getRootCategoryNode().depthFirstEnumeration(); 083 CategoryNode current; 084 while (nodes.hasMoreElements()) { 085 current = (CategoryNode) nodes.nextElement(); 086 current.resetNumberOfContainedRecords(); 087 _model.nodeChanged(current); 088 } 089 } 090 //-------------------------------------------------------------------------- 091 // Private Methods: 092 //-------------------------------------------------------------------------- 093 094 //-------------------------------------------------------------------------- 095 // Nested Top-Level Classes or Interfaces 096 //-------------------------------------------------------------------------- 097} 098