/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software
* License version 1.1, a copy of which has been included with this
* distribution in the LICENSE.txt file.
*/
package org.apache.log4j.lf5.viewer.categoryexplorer;
import org.apache.log4j.lf5.LogRecord;
import org.apache.log4j.lf5.LogRecordFilter;
import java.util.Enumeration;
/**
* An implementation of LogRecordFilter based on a CategoryExplorerModel
*
* @author Richard Wan
*/
// Contributed by ThoughtWorks Inc.
public class CategoryExplorerLogRecordFilter implements LogRecordFilter {
//--------------------------------------------------------------------------
// Constants:
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Protected Variables:
//--------------------------------------------------------------------------
protected CategoryExplorerModel _model;
//--------------------------------------------------------------------------
// Private Variables:
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Constructors:
//--------------------------------------------------------------------------
public CategoryExplorerLogRecordFilter(CategoryExplorerModel model) {
_model = model;
}
//--------------------------------------------------------------------------
// Public Methods:
//--------------------------------------------------------------------------
/**
* @return true if the CategoryExplorer model specified at construction
* is accepting the category of the specified LogRecord. Has a side-effect
* of adding the CategoryPath of the LogRecord to the explorer model
* if the CategoryPath is new.
*/
public boolean passes(LogRecord record) {
CategoryPath path = new CategoryPath(record.getCategory());
return _model.isCategoryPathActive(path);
}
/**
* Resets the counters for the contained CategoryNodes to zero.
*/
public void reset() {
resetAllNodes();
}
//--------------------------------------------------------------------------
// Protected Methods:
//--------------------------------------------------------------------------
protected void resetAllNodes() {
Enumeration nodes = _model.getRootCategoryNode().depthFirstEnumeration();
CategoryNode current;
while (nodes.hasMoreElements()) {
current = (CategoryNode) nodes.nextElement();
current.resetNumberOfContainedRecords();
_model.nodeChanged(current);
}
}
//--------------------------------------------------------------------------
// Private Methods:
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Nested Top-Level Classes or Interfaces
//--------------------------------------------------------------------------
}
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