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From "Craig McClanahan (JIRA)" <j...@apache.org>
Subject [jira] Created: (SHALE-448) Improve performance of startup scanning
Date Wed, 23 May 2007 19:04:42 GMT
Improve performance of startup scanning
---------------------------------------

                 Key: SHALE-448
                 URL: https://issues.apache.org/struts/browse/SHALE-448
             Project: Shale
          Issue Type: Improvement
          Components: Tiger
    Affects Versions: 1.0.4, 1.1.0-SNAPSHOT
            Reporter: Craig McClanahan
            Priority: Minor


At startup time, the Tiger extensions currently scan classes in JAR files to analyze their
annotations.  To reduce overhead, two heuristics (only scan JARs that have a META-INF/faces-config.xml,
and/or limit the package names that should be scanned) are applied to reduce the number of
classes actually scanned.

It turns out that there is a variant of Class.forName():

    public Class<?> forName(String name, boolean initialize, ClassLoader loader)
      throws ClassNotFoundException

that can load the metadata about a class without running the static initializers yet.  It
should be possible to use this variant to further reduce the startup overhead.


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