Home/ Questions/Q 6748859
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-26T12:37:04+00:00

In a JSF component what is the best way to refactor common constants, e.g.

  • 0

In a JSF component what is the best way to “refactor” common constants, e.g. names/paths in a <h:graphicImage> tag to a single local, temporary property?

<ui:composite>

  <h:graphicImage library="mylib" name="/a/b/c/img1.png"/>
  <h:graphicImage library="mylib" name="/a/b/c/img2.png"/>
  <h:graphicImage library="mylib" name="/a/b/c/img3.png"/>
  <!-- ... lots of repetitions -->

</ui:composite>

should be 

<ui:composite>

  <-- assign /a/b/c/ to path -->

  <h:graphicImage library="mylib" name="#{path}img1.png"/>
  <h:graphicImage library="mylib" name="#{path}img2.png"/>
  <h:graphicImage library="mylib" name="#{path}img3.png"/>
  <!-- ... lots of repetitions -->

</ui:composite>
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Use <c:set> on application scope. This basically stores the variable in the application map.

    <c:set var="path" value="a/b/c/" scope="application" />
<h:graphicImage library="mylib" name="#{path}img1.png"/>
<h:graphicImage library="mylib" name="#{path}img2.png"/>
<h:graphicImage library="mylib" name="#{path}img3.png"/>

    Make sure that the var="path" doesn’t conflict with existing managed bean names or implicit EL variables and such. You could if necessary use a convention to prefix it with _.

    <c:set var="_path" value="a/b/c/" scope="application" />
<h:graphicImage library="mylib" name="#{_path}img1.png"/>
<h:graphicImage library="mylib" name="#{_path}img2.png"/>
<h:graphicImage library="mylib" name="#{_path}img3.png"/>
    • 0