Would pre-compiling your jsp files help you instead? AFAIK that works on the
tags so you probably don't need to touch jspc.
On 10/29/07, Berglas, Anthony <[EMAIL PROTECTED]> wrote:
>
> As described in a previous post, Jasper is *extremely* slow at compiling
> .tag files packaged in a .jar. Tens of seconds every time you touch a
> new .jsp for the first time. Almost unusable if you use .tags
> extensively, as I do.
>
> The following few lines is a hack to fix this. The added code is marked
> between // -------- AJB markers. It effectively turns off the timestamp
> checking on .jar files.
>
> This does NOT actually introduce a bug. There is an existing bug in
> that .jsp files are not automatically recompiled if any .tags in .jars
> are changed. So you need to purge work in either case. A proper fix
> would be to check dependencies properly, at least to the .jar file
> itself. But the current fix is *much* better that the existing
> behavior.
>
> COULD SOMEBODY PLEASE ARRANGE FOR THIS CODE TO BE ADDED TO THE CURRENT
> SUBVERSION REPOSITORY?
>
> Outstanding is to make the compilation of .tags themselves much faster,
> not tens of seconds. To do that one needs to call the Java compiler
> once at the end for all the .tags, rather than once for each individual
> .tag which is *much* slower.
>
> I must admit that I got rather lost reading the Jasper source, with all
> the contexts etc. Some better comments on the classes describing their
> relationships to each other would be most helpful.
>
> Thanks,
>
> Anthony
>
>
>
> // Tomcat 6.0.10 Src deployed version.
>
> public class JspCompilationContext {...
>
> public void compile() throws JasperException, FileNotFoundException
> {
> createCompiler();
>
> // ------------ begin AJB
> // Hack to stop .tag files that are packaged in .jars being
> recompiled for every single .jsp that uses them.
> // The hack means that .tag files will not be automatically
> recompiled if they change -- you need to delete work area.
> // But that was actually an existing bug -- .jsps are not
> dependent on the .tag .jars so the work area needed deleting anyway.
> // (Outstanding is to compile multiple .tags in one pass and so
> make the process Much faster.)
> boolean outDated;
> if (isPackagedTagFile) outDated = ! new
> File(getClassFileName()).exists();
> else outDated = jspCompiler.isOutDated();
> // AjbLog.log("### Compiler.compile " + jspUri + " pkgTagFile " +
> isPackagedTagFile + " outDated " + outDated + " " + getClassFileName());
> if (outDated) {
> // if (isPackagedTagFile || jspCompiler.isOutDated()) {
> // ---------------- end AJB
> try {
> jspCompiler.removeGeneratedFiles();
> jspLoader = null;
> jspCompiler.compile();
> jsw.setReload(true);
> jsw.setCompilationException(null);
> } catch (JasperException ex) {
> // Cache compilation exception
> jsw.setCompilationException(ex);
> throw ex;
> } catch (Exception ex) {
> JasperException je = new JasperException(
>
> Localizer.getMessage("jsp.error.unable.compile"),
> ex);
> // Cache compilation exception
> jsw.setCompilationException(je);
> throw je;
> }
> }
> }
>
> --
> Dr Anthony Berglas
> Ph. +61 7 3227 4410
> Mob. +61 44 838 8874
> [EMAIL PROTECTED]; [EMAIL PROTECTED]
>
>
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