Version 11
Created by ozizka on Dec 9, 2012 12:27 PM. Last modified by ozizka on Dec 10, 2012 1:17 AM.

    ThymeLeaf is a templating engine.

    http://www.thymeleaf.org/documentation.html

     

    Possible integration points

    In CDI, even standalone:

     

    • IContext - the map of values available for the template. Those could be filled from CDI.
              @Inject CDIThymeContext ctx;

     

              By default, ThymeLeaf uses OGNL against the map of variables to resolve the expressions.

     

              The interface IContext has only getVariables(), so the values are not resolved per case - whole map needs to be given at the time of this call. RFE

              Therefore, the map provided by CDIThymeContext would probably have to

      • list all beans CDI could deliver, limited to those marked as beans somehow (i.e. not "any class"),
      • override the methods of VariablesMap which ThymeLeaf actually uses, and look up the beans lazily.
        • Unfortunatelly, this wouldn't work:
        • java.lang.UnsupportedOperationException
    at cz.oz.thymeleaftry.cdi.LazyVariablesMap.size(LazyVariablesMap.java:27)
    at java.util.HashMap.putAll(HashMap.java:597)
    at org.thymeleaf.context.AbstractProcessingContext.createEvaluationRoot(AbstractProcessingContext.java:95)

     

    • Also, we could make the template names type-safe, by introducing one qualifier per page.
              // Inject object with the template "Home", the template engine, and CDIThymeContext.
          @Inject @Template @Home  ThymeTemplate tpl;

          // Additional variables.
          tpl.getContext().setVariable("foo", bar);

          // Process.
          tpl.process( response.getWriter() );

     

    Additionally, in Application Server:

     

    • IResourceResolver - to load resources from deployments. ThymeLeaf's ClassLoaderResourceResolver uses just
     ClassLoaderUtils.getClassLoader(ClassLoaderResourceResolver.class).getResourceAsStream(resourceName);

     

     

    • @Resource TemplateEngine templateEngine;   - inject template engine configured as module. (Probably not much useful, ThymeLeaf is pretty simple, almost no config.)