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