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» Performance
< a
target="_blank"
href="https://github.com/pmd/pmd/blob/master/docs/../pmd-xml/src/main/resources/category/xsl/performance.xml"
class="pull-right"
role="button"
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>
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< h1 class = "post-title-main" > Performance< / h1 >
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< div class = "post-content" data-github-edit-url = "https://github.com/pmd/pmd/blob/master/docs/../pmd-xml/src/main/resources/category/xsl/performance.xml" >
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< div class = "summary" > Rules that flag suboptimal code.< / div >
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< div id = "inline-toc" > <!-- empty, move TOC here when screen size too small --> < / div >
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<!-- DO NOT EDIT THIS FILE. This file is generated from file ../pmd - xml/src/main/resources/category/xsl/performance.xml. -->
< h2 id = "avoidaxisnavigation" > AvoidAxisNavigation< / h2 >
< p > < strong > Since:< / strong > PMD 5.0< / p >
< p > < strong > Priority:< / strong > Medium (3)< / p >
< p > Avoid using the ‘ ’ ‘ ’
through 100% of the document in the worst case. Also, try to avoid using ‘ ’
or ‘ ’ ’
cutting through 100% of the document.< / p >
< p > < strong > This rule is defined by the following XPath expression:< / strong > < / p >
< div class = "language-xpath highlighter-rouge" > < div class = "highlight" > < pre class = "highlight" > < code > < span class = "o" > //< / span > < span class = "kr" > node()< / span > < span class = "p" > [< / span > < span class = "w" >
< / span > < span class = "nf" > contains< / span > < span class = "p" > (< / span > < span class = "na" > @select< / span > < span class = "p" > ,< / span > < span class = "s1" > 'preceding::'< / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "ow" > or< / span > < span class = "w" >
< / span > < span class = "nf" > contains< / span > < span class = "p" > (< / span > < span class = "na" > @select< / span > < span class = "p" > ,< / span > < span class = "s1" > 'following::'< / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "ow" > or< / span > < span class = "w" >
< / span > < span class = "nf" > contains< / span > < span class = "p" > (< / span > < span class = "na" > @select< / span > < span class = "p" > ,< / span > < span class = "s1" > 'descendant::'< / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "ow" > or< / span > < span class = "w" >
< / span > < span class = "nf" > contains< / span > < span class = "p" > (< / span > < span class = "na" > @select< / span > < span class = "p" > ,< / span > < span class = "s1" > 'descendant-self::'< / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "ow" > or< / span > < span class = "w" > < / span > < span class = "p" > (< / span > < span class = "w" >
< / span > < span class = "p" > (< / span > < span class = "nv" > $checkSelfDescendantAbreviation< / span > < span class = "w" > < / span > < span class = "err" > =< / span > < span class = "w" > < / span > < span class = "nf" > true< / span > < span class = "p" > ()< / span > < span class = "w" > < / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "ow" > and< / span > < span class = "w" >
< / span > < span class = "nf" > contains< / span > < span class = "p" > (< / span > < span class = "na" > @select< / span > < span class = "p" > ,< / span > < span class = "s1" > '//'< / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "p" > )< / span > < span class = "w" >
< / span > < span class = "p" > ]< / span > < span class = "w" >
< / span > < / code > < / pre > < / div > < / div >
< p > < strong > Example(s):< / strong > < / p >
< pre > < code class = "language-xsl" > < xsl:variable name="var" select="//item/descendant::child"/>
< / code > < / pre >
< p > < strong > This rule has the following properties:< / strong > < / p >
< table >
< thead >
< tr >
< th > Name< / th >
< th > Default Value< / th >
< th > Description< / th >
< th > Multivalued< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td > checkSelfDescendantAbreviation< / td >
< td > false< / td >
< td > descendant::self abreviation, ‘ ’ < / td >
< td > no< / td >
< / tr >
< / tbody >
< / table >
< p > < strong > Use this rule with the default properties by just referencing it:< / strong > < / p >
< div class = "language-xml highlighter-rouge" > < div class = "highlight" > < pre class = "highlight" > < code > < span class = "nt" > < rule< / span > < span class = "na" > ref=< / span > < span class = "s" > "category/xsl/performance.xml/AvoidAxisNavigation"< / span > < span class = "nt" > /> < / span >
< / code > < / pre > < / div > < / div >
< p > < strong > Use this rule and customize it:< / strong > < / p >
< div class = "language-xml highlighter-rouge" > < div class = "highlight" > < pre class = "highlight" > < code > < span class = "nt" > < rule< / span > < span class = "na" > ref=< / span > < span class = "s" > "category/xsl/performance.xml/AvoidAxisNavigation"< / span > < span class = "nt" > > < / span >
< span class = "nt" > < properties> < / span >
< span class = "nt" > < property< / span > < span class = "na" > name=< / span > < span class = "s" > "checkSelfDescendantAbreviation"< / span > < span class = "na" > value=< / span > < span class = "s" > "false"< / span > < span class = "nt" > /> < / span >
< span class = "nt" > < /properties> < / span >
< span class = "nt" > < /rule> < / span >
< / code > < / pre > < / div > < / div >
< div class = "tags" >
< / div >
< / div >
< footer >
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< hr / >
< div >
This documentation is written in markdown. < br / >
If there is something missing or can be improved, edit this page on
github and create a PR:
< a
target="_blank"
href="https://github.com/pmd/pmd/blob/master/docs/../pmd-xml/src/main/resources/category/xsl/performance.xml"
role="button"
>< i class = "fa fa-github fa-lg" > < / i > Edit on GitHub< /a
>
< / div >
< hr / >
< div class = "row" >
< div class = "col-lg-12 footer" >
© 2022 PMD Open Source Project. All rights
reserved. < br / >
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Site last generated: Mar 25, 2022 < br / >
2022-03-24 11:42:13 +00:00
< p >
< img src = "images/pmd-logo-small.png" alt = "Company
logo"/>
< / p >
< / div >
< / div >
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< / footer >
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< / div >
<!-- /.row -->
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< / div >
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<!-- /.container -->
< / div >
<!-- Sticky TOC column -->
< div class = "toc-col" >
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< div id = "toc" > < / div >
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< / div >
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<!-- /.toc - container - wrapper -->
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< / div >
< / div >
< / body >
< / html >
