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From "Michele Vivoda (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JXPATH-162) Concurrency problem for JXPathContextFactory.factoryImplName static field
Date Mon, 19 Aug 2013 20:47:48 GMT
Michele Vivoda created JXPATH-162:
-------------------------------------

             Summary: Concurrency problem for JXPathContextFactory.factoryImplName static
field
                 Key: JXPATH-162
                 URL: https://issues.apache.org/jira/browse/JXPATH-162
             Project: Commons JXPath
          Issue Type: Bug
    Affects Versions: 1.3
            Reporter: Michele Vivoda
            Priority: Minor
             Fix For: 1.4


The static field [factoryImplName] is loaded lazily when the first call to JXPathContextFactory#getInstance()
is made. This is a broken pattern when #getInstance() is called by multiple threads. My suggestion
is to find the name in the static initializer:

private static final String factoryImplName = findFactory(FACTORY_NAME_PROPERTY, DEFAULT_FACTORY_CLASS);
    

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