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3 <title>Chapter 12. Data mining of bugs with FindBugs™</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><link rel="home" href="index.html" title="FindBugs™ Manual"><link rel="up" href="index.html" title="FindBugs™ Manual"><link rel="prev" href="rejarForAnalysis.html" title="Chapter 11. Using rejarForAnalysis"><link rel="next" href="license.html" title="Chapter 13. License"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 12. Data mining of bugs with <span class="application">FindBugs</span>™</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="rejarForAnalysis.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="license.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 12. Data mining of bugs with FindBugs™"><div class="titlepage"><div><div><h2 class="title"><a name="datamining"></a>Chapter 12. Data mining of bugs with <span class="application">FindBugs</span>™</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="datamining.html#commands">1. Commands</a></span></dt><dt><span class="sect1"><a href="datamining.html#examples">2. Examples</a></span></dt><dt><span class="sect1"><a href="datamining.html#antexample">3. Ant example</a></span></dt></dl></div><p>
88 </pre><div class="table"><a name="computeBugHistoryTable"></a><p class="title"><b>Table 12.1. Options for computeBugHistory command</b></p><div class="table-contents"><table summary="Options for computeBugHistory command" border="1"><colgroup><col><col><col></colgroup><thead><tr><th align="left">Command-line option</th><th align="left">Ant attribute</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left">-output <file></td><td align="left">output="<file>"</td><td align="left">save output in the named file (may also be an input file)</td></tr><tr><td align="left">-overrideRevisionNames[:truth]</td><td align="left">overrideRevisionNames="[true|false]"</td><td align="left">override revision names for each version with names computed from the filenames</td></tr><tr><td align="left">-noPackageMoves[:truth]</td><td align="left">noPackageMoves="[true|false]"</td><td align="left">if a class has moved to another package, treat warnings in that class as seperate</td></tr><tr><td align="left">-preciseMatch[:truth]</td><td align="left">preciseMatch="[true|false]"</td><td align="left">require bug patterns to match precisely</td></tr><tr><td align="left">-precisePriorityMatch[:truth]</td><td align="left">precisePriorityMatch="[true|false]"</td><td align="left">consider two warnings as the same only if priorities match exactly</td></tr><tr><td align="left">-quiet[:truth]</td><td align="left">quiet="[true|false]"</td><td align="left">don't generate any output to standard out unless there is an error</td></tr><tr><td align="left">-withMessages[:truth]</td><td align="left">withMessages="[true|false]"</td><td align="left">include human-readable messages describing the warnings in XML output</td></tr></tbody></table></div></div><br class="table-break"></div><div class="sect2" title="1.3. filterBugs"><div class="titlepage"><div><div><h3 class="title"><a name="filterBugs"></a>1.3. filterBugs</h3></div></div></div><p>This command is used to select a subset of warnings from a FindBugs XML warning file
113 </pre><div class="table"><a name="filterOptionsTable"></a><p class="title"><b>Table 12.2. Options for filterBugs command</b></p><div class="table-contents"><table summary="Options for filterBugs command" border="1"><colgroup><col><col><col></colgroup><thead><tr><th align="left">Command-line option</th><th align="left">Ant attribute</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left"> </td><td align="left">input="<file>"</td><td align="left">use file as input</td></tr><tr><td align="left"> </td><td align="left">output="<file>"</td><td align="left">output results to file</td></tr><tr><td align="left">-not</td><td align="left">not="[true|false]"</td><td align="left">reverse (all) switches for the filter</td></tr><tr><td align="left">-withSource[:truth]</td><td align="left">withSource="[true|false]"</td><td align="left">only warnings for switch source is available</td></tr><tr><td align="left">-exclude <filter file></td><td align="left">exclude="<filter file>"</td><td align="left">exclude bugs matching given filter</td></tr><tr><td align="left">-include <filter file></td><td align="left">include="<filter file>"</td><td align="left">include only bugs matching given filter</td></tr><tr><td align="left">-annotation <text></td><td align="left">annotation="<text>"</td><td align="left">allow only warnings containing this text in a manual annotation</td></tr><tr><td align="left">-after <when></td><td align="left">after="<when>"</td><td align="left">allow only warnings that first occurred after this version</td></tr><tr><td align="left">-before <when></td><td align="left">before="<when>"</td><td align="left">allow only warnings that first occurred before this version</td></tr><tr><td align="left">-first <when></td><td align="left">first="<when>"</td><td align="left">allow only warnings that first occurred in this version</td></tr><tr><td align="left">-last <when></td><td align="left">last="<when>"</td><td align="left">allow only warnings that last occurred in this version</td></tr><tr><td align="left">-fixed <when></td><td align="left">fixed="<when>"</td><td align="left">allow only warnings that last occurred in the previous version (clobbers <code class="option">-last</code>)</td></tr><tr><td align="left">-present <when></td><td align="left">present="<when>"</td><td align="left">allow only warnings present in this version</td></tr><tr><td align="left">-absent <when></td><td align="left">absent="<when>"</td><td align="left">allow only warnings absent in this version</td></tr><tr><td align="left">-active[:truth]</td><td align="left">active="[true|false]"</td><td align="left">allow only warnings alive in the last sequence number</td></tr><tr><td align="left">-introducedByChange[:truth]</td><td align="left">introducedByChange="[true|false]"</td><td align="left">allow only warnings introduced by a change of an existing class</td></tr><tr><td align="left">-removedByChange[:truth]</td><td align="left">removedByChange="[true|false]"</td><td align="left">allow only warnings removed by a change of a persisting class</td></tr><tr><td align="left">-newCode[:truth]</td><td align="left">newCode="[true|false]"</td><td align="left">allow only warnings introduced by the addition of a new class</td></tr><tr><td align="left">-removedCode[:truth]</td><td align="left">removedCode="[true|false]"</td><td align="left">allow only warnings removed by removal of a class</td></tr><tr><td align="left">-priority <level></td><td alignalign="left">allow only warnings with this priority or higher</td></tr><tr><td align="left">-maxRank <rank></td><td align="left">rank="[1..20]"</td><td align="left">allow only warnings with this rank or lower</td></tr><tr><td align="left">-class <pattern></td><td align="left">class="<class>"</td><td align="left">allow only bugs whose primary class name matches this pattern</td></tr><tr><td align="left">-bugPattern <pattern></td><td align="left">bugPattern="<pattern>"</td><td align="left">allow only bugs whose type matches this pattern</td></tr><tr><td align="left">-category <category></td><td align="left">category="<category>"</td><td align="left">allow only warnings with a category that starts with this string</td></tr><tr><td align="left">-designation <designation></td><td align="left">designation="<designation>"</td><td align="left">allow only warnings with this designation (e.g., -designation SHOULD_FIX)</td></tr><tr><td align="left">-withMessages[:truth] </td><td align="left">withMessages="[true|false]"</td><td align="left">the generated XML should contain textual messages</td></tr></tbody></table></div></div><br class="table-break"></div><div class="sect2" title="1.4. mineBugHistory"><div class="titlepage"><div><div><h3 class="title"><a name="mineBugHistory"></a>1.4. mineBugHistory</h3></div></div></div><p>This command generates a table containing counts of the numbers of warnings
133 </pre><div class="table"><a name="mineBugHistoryOptionsTable"></a><p class="title"><b>Table 12.3. Options for mineBugHistory command</b></p><div class="table-contents"><table summary="Options for mineBugHistory command" border="1"><colgroup><col><col><col></colgroup><thead><tr><th align="left">Command-line option</th><th align="left">Ant attribute</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left"> </td><td align="left">input="<file>"</td><td align="left">use file as input</td></tr><tr><td align="left"> </td><td align="left">output="<file>"</td><td align="left">write output to file</td></tr><tr><td align="left">-formatDates</td><td align="left">formatDates="[true|false]"</td><td align="left">render dates in textual form</td></tr><tr><td align="left">-noTabs</td><td align="left">noTabs="[true|false]"</td><td align="left">delimit columns with groups of spaces instead of tabs (see below)</td></tr><tr><td align="left">-summary</td><td align="left">summary="[true|false]"</td><td align="left">output terse summary of changes over the last ten entries</td></tr></tbody></table></div></div><br class="table-break"><p>
140 table with the following columns:</p><div class="table"><a name="mineBugHistoryColumns"></a><p class="title"><b>Table 12.4. Columns in mineBugHistory output</b></p><div class="table-contents"><table summary="Columns in mineBugHistory output" border="1"><colgroup><col><col></colgroup><thead><tr><th align="left">Title</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left">seq</td><td align="left">Sequence number (successive integers, starting at 0)</td></tr><tr><td align="left">version</td><td align="left">Version name</td></tr><tr><td align="left">time</td><td align="left">Release timestamp</td></tr><tr><td align="left">classes</td><td align="left">Number of classes analyzed</td></tr><tr><td align="left">NCSS</td><td align="left">Non Commenting Source Statements</td></tr><tr><td align="left">added</td><td align="left">Count of new warnings for a class that existed in the previous version</td></tr><tr><td align="left">newCode</td><td align="left">Count of new warnings for a class that did not exist in the previous version</td></tr><tr><td align="left">fixed</td><td align="left">Count of warnings removed from a class that remains in the current version</td></tr><tr><td align="left">removed</td><td align="left">Count of warnings in the previous version for a class that is not present in the current version</td></tr><tr><td align="left">retained</td><td align="left">Count of warnings that were in both the previous and current version</td></tr><tr><td align="left">dead</td><td align="left">Warnings that were present in earlier versions but in neither the current version or the immediately preceeding version</td></tr><tr><td align="left">active</td><td align="left">Total warnings present in the current version</td></tr></tbody></table></div></div><br class="table-break"></div><div class="sect2" title="1.5. defectDensity"><div class="titlepage"><div><div><h3 class="title"><a name="defectDensity"></a>1.5. defectDensity</h3></div></div></div><p>
145 4 warnings.</p><div class="table"><a name="defectDensityColumns"></a><p class="title"><b>Table 12.5. Columns in defectDensity output</b></p><div class="table-contents"><table summary="Columns in defectDensity output" border="1"><colgroup><col><col></colgroup><thead><tr><th align="left">Title</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left">kind</td><td align="left">project, package or class</td></tr><tr><td align="left">name</td><td align="left">The name of the project, package or class</td></tr><tr><td align="left">density</td><td align="left">Number of warnings generated per 1000 lines of NCSS.</td></tr><tr><td align="left">bugs</td><td align="left">Number of warnings</td></tr><tr><td align="left">NCSS</td><td align="left">Calculated number of NCSS</td></tr></tbody></table></div></div><br class="table-break"></div><div class="sect2" title="1.6. convertXmlToText"><div class="titlepage"><div><div><h3 class="title"><a name="convertXmlToText"></a>1.6. convertXmlToText</h3></div></div></div><p>
157 </pre><p>Attributes for this ant task are listed in the following table.</p><div class="table"><a name="convertXmlToTextTable"></a><p class="title"><b>Table 12.6. Options for convertXmlToText command</b></p><div class="table-contents"><table summary="Options for convertXmlToText command" border="1"><colgroup><col><col><col></colgroup><thead><tr><th align="left">Command-line option</th><th align="left">Ant attribute</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left"> </td><td align="left">input="<filename>"</td><td align="left">use file as input</td></tr><tr><td align="left"> </td><td align="left">output="<filename>"</td><td align="left">output results to file</td></tr><tr><td align="left">-longBugCodes</td><td align="left">longBugCodes="[true|false]"</td><td align="left">use the full bug pattern code instead of two-letter abbreviation</td></tr><tr><td align="left"> </td><td align="left">format="text"</td><td align="left">generate plain text output with one bug per line (command-line default)</td></tr><tr><td align="left">-html[:stylesheet]</td><td align="left">format="html:<stylesheet>"</td><td align="left">generate output with specified stylesheet (see below), or default.xsl if unspecified</td></tr></tbody></table></div></div><br class="table-break"><p>
187 </pre><div class="table"><a name="setBugDatabaseInfoOptions"></a><p class="title"><b>Table 12.7. setBugDatabaseInfo Options</b></p><div class="table-contents"><table summary="setBugDatabaseInfo Options" border="1"><colgroup><col><col><col></colgroup><thead><tr><th align="left">Command-line option</th><th align="left">Ant attribute</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left"> </td><td align="left">input="<file>"</td><td align="left">use file as input</td></tr><tr><td align="left"> </td><td align="left">output="<file>"</td><td align="left">write output to file</td></tr><tr><td align="left">-name <name></td><td align="left">name="<name>"</td><td align="left">set name for (last) revision</td></tr><tr><td align="left">-timestamp <when></td><td align="left">timestamp="<when>"</td><td align="left">set timestamp for (last) revision</td></tr><tr><td align="left">-source <directory></td><td align="left">source="<directory>"</td><td align="left">add specified directory to the source search path</td></tr><tr><td align="left">-findSource <directory></td><td align="left">findSource="<directory>"</td><td align="left">find and add all relevant source directions contained within specified directory</td></tr><tr><td align="left">-suppress <filter file></td><td align="left">suppress="<filter file>"</td><td align="left">suppress warnings matched by this file (replaces previous suppressions)</td></tr><tr><td align="left">-withMessages</td><td align="left">withMessages="[true|false]"</td><td align="left">add textual messages to XML</td></tr><tr><td align="left">-resetSource</td><td align="left">resetSource="[true|false]"</td><td align="left">remove all source search paths</td></tr></tbody></table></div></div><br class="table-break"></div><div class="sect2" title="1.8. listBugDatabaseInfo"><div class="titlepage"><div><div><h3 class="title"><a name="listBugDatabaseInfo"></a>1.8. listBugDatabaseInfo</h3></div></div></div><p>This command takes a list of zero or more xml bug database filenames on the command line.
191 </p><p>The output is a table one row per bug database and the following columns:</p><div class="table"><a name="listBugDatabaseInfoColumns"></a><p class="title"><b>Table 12.8. listBugDatabaseInfo Columns</b></p><div class="table-contents"><table summary="listBugDatabaseInfo Columns" border="1"><colgroup><col><col></colgroup><thead><tr><th align="left">Column</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left">version</td><td align="left">version name</td></tr><tr><td align="left">time</td><td align="left">Release timestamp</td></tr><tr><td align="left">classes</td><td align="left">Number of classes analyzed</td></tr><tr><td align="left">NCSS</td><td align="left">Non Commenting Source Statements analyzed</td></tr><tr><td align="left">total</td><td align="left">Total number of warnings of all kinds</td></tr><tr><td align="left">high</td><td align="left">Total number of high priority warnings of all kinds</td></tr><tr><td align="left">medium</td><td align="left">Total number of medium/normal priority warnings of all kinds</td></tr><tr><td align="left">low</td><td align="left">Total number of low priority warnings of all kinds</td></tr><tr><td align="left">filename</td><td align="left">filename of database</td></tr></tbody></table></div></div><br class="table-break"></div></div><div class="sect1" title="2. Examples"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="examples"></a>2. Examples</h2></div></div></div><div class="sect2" title="2.1. Mining history using proveded shell scrips"><div class="titlepage"><div><div><h3 class="title"><a name="unixscriptsexamples"></a>2.1. Mining history using proveded shell scrips</h3></div></div></div><p>In all of the following, the commands are given in a directory that contains
421 </pre></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="rejarForAnalysis.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="license.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 11. Using rejarForAnalysis </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align
