Runs a set of static code analysis rules on some Java source code files and generates a list of problems found.
| Attribute | Description | Required |
| rulesetfiles | A comma delimited list of ruleset files ('rulesets/basic.xml,rulesets/design.xml'). If you write your own ruleset files, you can put them on the classpath and plug them in here. | Yes, unless the ruleset nested element is used |
| failonerror | Whether or not to fail the build if any errors occur while processing the files | No |
| failOnRuleViolation | Whether or not to fail the build if PMD finds any problems | No |
| minimumPriority | The rule priority threshold; rules with lower priority than they will not be used | No |
| shortFilenames | Places truncated filenames in the report. This can reduce your report file size by 15%-20%. | No |
| failuresPropertyName | A property name to plug the number of rule violations into when the task finishes | No |
| encoding | The character set encoding (e.g. UTF-8) to use when reading the source code files | No |
| suppressMarker | The series of characters to use to tell PMD to skip lines - the default is NOPMD. | No |
| maxRuleViolations | Whether or not to fail the build if PMD finds more than the value of this attribute. Note that setting this attribute does not require to set the failOnRuleViolation to true. | No |
formatter nested element - specifies the format of and the files to which the report is written.
| Name | Values |
|---|---|
| type | xml,ideaj,textcolor,text,textpad,emacs,csv,html,xslt,yahtml,summaryhtml,vbhtml |
| showSuppressed | Whether to show suppressed warnings; "false" is the default. |
| toFile | A filename to which to write the report |
| toConsole | Whether to output the report to the console; "false" is the default. |
|
The formatter element can contain nested param elements to configure the formatter in detail, e.g. |
|
classpath nested element - useful for specifying custom rule. More details on the classpath element are in the Ant documentation here and there's an example below.
auxclasspath nested element - extra classpath used for Type Resolution rules.
sourceLanguage nested element - specify which language (Java, Ecmascript, XML,...) and the associated version (1.5, 1.6,...)
ruleset nested element - another way to specify rulesets. Here's an example:
<target name="pmd">
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<pmd shortFilenames="true">
<sourceLanguage name="java" version="1.6"/>
<ruleset>rulesets/java/design.xml</ruleset>
<ruleset>java-basic</ruleset>
<formatter type="html" toFile="pmd_report.html">
<param name="linkPrefix" value="http://pmd.sourceforge.net/xref/"/>
</formatter>
<fileset dir="/usr/local/j2sdk1.4.1_01/src/">
<include name="java/lang/*.java"/>
</fileset>
</pmd>
</target>
The specific version of a language to be used for parsing is selected via the sourceLanguage nested element. Possible values are:
<sourceLanguage name="cpp" version=""/>
<sourceLanguage name="fortran" version=""/>
<sourceLanguage name="ecmascript" version="3"/>
<sourceLanguage name="java" version="1.3"/>
<sourceLanguage name="java" version="1.4"/>
<sourceLanguage name="java" version="1.5"/>
<sourceLanguage name="java" version="1.6"/>
<sourceLanguage name="java" version="1.7"/>
<sourceLanguage name="jsp" version=""/>
<sourceLanguage name="php" version=""/>
<sourceLanguage name="ruby" version=""/>
<sourceLanguage name="xsl" version=""/>
<sourceLanguage name="xml" version=""/>
Several folks (most recently, Wouter Zelle) have written XSLT scripts which you can use to transform the XML report into nifty HTML. To do this, make sure you use the XML formatter in the PMD task invocation, i.e.:
<formatter type="xml" toFile="${tempbuild}/$report_pmd.xml"/>
Then, after the end of the PMD task, do this:
<xslt in="${tempbuild}/$report_pmd.xml" style="${pmdConfig}/wz-pmd-report.xslt" out="${pmdOutput}/$report_pmd.html" />
Running one ruleset to produce a HTML report (and printing the report to the console as well)
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<target name="pmd">
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<pmd rulesetfiles="java-imports">
<formatter type="html" toFile="pmd_report.html" toConsole="true"/>
<fileset dir="C:\j2sdk1.4.1_01\src\java\lang\">
<include name="**/*.java"/>
</fileset>
</pmd>
</target>
Running multiple rulesets to produce an XML report
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<target name="pmd">
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<pmd rulesetfiles="rulesets/java/imports.xml,java-unusedcode">
<formatter type="xml" toFile="c:\pmd_report.xml"/>
<fileset dir="C:\j2sdk1.4.1_01\src\java\lang\">
<include name="**/*.java"/>
</fileset>
</pmd>
</target>
Using a custom renderer
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<target name="pmd">
<pmd rulesetfiles="rulesets/java/design.xml">
<formatter type="com.mycompany.MyRenderer" toFile="foo.html"/>
<fileset dir="/path/to/java/src">
<include name="**/*.java"/>
</fileset>
</pmd>
</target>
Using a classpath reference in the taskdef
<path id="pmd.classpath">
<pathelement location="${build}"/>
<fileset dir="/path/to/my/pmd/lib/">
<include name="*.jar"/>
</fileset>
</path>
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" classpathref="pmd.classpath"/>
<target name="pmd">
<pmd rulesetfiles="rulesets/java/design.xml">
<formatter type="net.sourceforge.pmd.renderers.HTMLRenderer" toFile="foo.html"/>
<fileset dir="/path/to/java/src">
<include name="**/*.java"/>
</fileset>
</pmd>
</target>
Getting verbose output
[tom@hal bin]$ ant -v pmd
Apache Ant version 1.6.2 compiled on July 16 2004
Buildfile: build.xml
Detected Java version: 1.4 in: /usr/local/j2sdk1.4.2_03/jre
Detected OS: Linux
parsing buildfile build.xml with URI = file:/home/tom/data/pmd/pmd/bin/build.xml
Project base dir set to: /home/tom/data/pmd/pmd
Build sequence for target `pmd' is [pmd]
Complete build sequence is [pmd, copy, cppjavacc, cpd, delete,
compile, clean, jar, dist, cpdjnlp, jjtree, javadoc, test, tomserver]
pmd:
[pmd] Using the normal ClassLoader
[pmd] Using these rulesets: rulesets/java/imports.xml
[pmd] Using rule DontImportJavaLang
[pmd] Using rule UnusedImports
[pmd] Using rule ImportFromSamePackage
[pmd] Using rule DuplicateImports
[pmd] Processing file /usr/local/java/src/java/lang/ref/Finalizer.java
[pmd] Processing file /usr/local/java/src/java/lang/ref/FinalReference.java
[pmd] Processing file /usr/local/java/src/java/lang/ref/PhantomReference.java
[pmd] Processing file /usr/local/java/src/java/lang/ref/Reference.java
[pmd] Processing file /usr/local/java/src/java/lang/ref/ReferenceQueue.java
[pmd] Processing file /usr/local/java/src/java/lang/ref/SoftReference.java
[pmd] Processing file /usr/local/java/src/java/lang/ref/WeakReference.java
[pmd] 0 problems found
BUILD SUCCESSFUL
Total time: 2 seconds
[tom@hal bin]$
An HTML report with the "linkPrefix" gizmo
<target name="pmd">
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<pmd rulesetfiles="java-basic" shortFilenames="true">
<formatter type="html" toFile="pmd_report.html">
<param name="linkPrefix" value="http://pmd.sourceforge.net/xref/"/>
</formatter>
<fileset dir="/usr/local/j2sdk1.4.1_01/src/">
<include name="java/lang/*.java"/>
</fileset>
</pmd>
</target>
An HTML report with the "linePrefix" gizmo
<target name="pmd">
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask"/>
<pmd rulesetfiles="java-basic" shortFilenames="true">
<formatter type="html" toFile="pmd_report.html">
<param name="linePrefix" value=".line"/>
</formatter>
<fileset dir="/usr/local/j2sdk1.4.1_01/src/">
<include name="java/lang/*.java"/>
</fileset>
</pmd>
</target>
Memory usage has been reduced significantly starting with the PMD 4.0 release. When testing all Java rules on the jdk 1.6 source code (about 7000 classes), the allocated heap space does not go over 60M.
However, on very large projects, the Ant task may still fail with a OutOfMemoryError. To prevent this from happening, increase the maximum memory usable by ant using the ANT_OPTS variable (adjust the size according to your available memory):
On Windows:
set ANT_OPTS=-Xmx1024m -Xms512m
export ANT_OPTS="-Xmx1024m -Xms512m"