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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.tests.ccvs.ui.logformatter;
public abstract class PrintDiffVisitor implements ILogEntryVisitor {
protected RootEntry olderRoot;
protected int threshold; // threshold for negligible changes
protected boolean ignoreNegligible; // if true, ignores negligible changes
protected LogEntryContainer olderParent; // corresponding parent in older root
/**
* Creates a visitor to print a summary of the changes between a log
* and an older one. Optionally ignores differences within a certain threshold.
* Does not print older entries for which there are no corresponding newer ones.
*
* @param olderRoot the root of the older log
* @param threshold the minimum non-negligible % change
* @param ignoreNegligible if true, does not display negligible changes
*/
public PrintDiffVisitor(RootEntry olderRoot, int threshold, boolean ignoreNegligible) {
this.olderRoot = olderRoot;
this.olderParent = null;
this.threshold = threshold;
this.ignoreNegligible = ignoreNegligible;
}
protected abstract void visitRootEntry(RootEntry entry, RootEntry olderEntry);
protected abstract void visitCaseEntry(CaseEntry entry, CaseEntry olderEntry);
protected abstract void visitGroupEntry(GroupEntry entry, GroupEntry olderEntry);
protected abstract void visitTaskEntry(TaskEntry entry, TaskEntry olderEntry);
public void visitRootEntry(RootEntry entry) {
olderParent = olderRoot;
visitRootEntry(entry, olderRoot);
}
public void visitCaseEntry(CaseEntry entry) {
LogEntryContainer prevOlderParent = olderParent;
if (olderParent != null) {
olderParent = (LogEntryContainer) olderParent.findMember(entry.getName(), CaseEntry.class);
}
visitCaseEntry(entry, (CaseEntry) olderParent);
olderParent = prevOlderParent;
}
public void visitGroupEntry(GroupEntry entry) {
LogEntryContainer prevOlderParent = olderParent;
if (olderParent != null) {
olderParent = (LogEntryContainer) olderParent.findMember(entry.getName(), GroupEntry.class);
}
visitGroupEntry(entry, (GroupEntry) olderParent);
olderParent = prevOlderParent;
}
public void visitTaskEntry(TaskEntry entry) {
TaskEntry olderEntry = null;
if (olderParent != null) {
olderEntry = (TaskEntry) olderParent.findMember(entry.getName(), TaskEntry.class);
}
if (ignoreNegligible && isDifferenceNegligible(entry, olderEntry)) return;
visitTaskEntry(entry, olderEntry);
}
protected boolean isDifferenceNegligible(TaskEntry newerEntry, TaskEntry olderEntry) {
if (newerEntry.getTotalRuns() == 0 || olderEntry.getTotalRuns() == 0) return false;
int olderMean = olderEntry.getAverageMillis();
if (olderMean == 0) return false;
int newerMean = newerEntry.getAverageMillis();
int diff = Math.abs(newerMean - olderMean);
return diff * 100 / olderMean < threshold;
}
protected boolean isDifferenceUncertain(TaskEntry newerEntry, TaskEntry olderEntry) {
if (newerEntry.getTotalRuns() == 0 || olderEntry.getTotalRuns() == 0) return false;
int olderMean = olderEntry.getAverageMillis();
int newerMean = newerEntry.getAverageMillis();
int diff = Math.abs(newerMean - olderMean);
int diffCI = newerEntry.getConfidenceInterval() + olderEntry.getConfidenceInterval();
return diff < diffCI;
}
}
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