[jira] [Created] (WW-4542) FreemarkerManager class throws null pointer exception

["Rin Saunders (JIRA)" <ji...@apache.org>]

Rin Saunders created WW-4542:
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             Summary: FreemarkerManager class throws null pointer exception 
                 Key: WW-4542
                 URL: https://issues.apache.org/jira/browse/WW-4542
             Project: Struts 2
          Issue Type: Bug
          Components: Plugin - Tags
    Affects Versions: 2.3.24
         Environment: Win7
WebLogic 2.1.3
JDK 1.7
            Reporter: Rin Saunders
            Priority: Minor


Am getting a null pointer error in the FreemarkerManager class. It occurs in the setContainer method. The code below seems to assume that getInstanceNames returns an empty set if there are no matches. In fact, it returns a null, which is legit according to the XWork doc. This occurs in Freemarker 2.3.23 under WebLogic 12.1.3.
    Map<String, TagLibrary> oldMap = new HashMap<String, TagLibrary>();
    Set<String> oldPrefixes = container.getInstanceNames(TagLibrary.class);
    for (String prefix : oldPrefixes) {
        oldMap.put(prefix, container.getInstance(TagLibrary.class, prefix));

Not sure if this affects the presentation of Struts2 views. Is there a workaround or fix?



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