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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=4065 Regexp mapper and classpath ------- Additional Comments From [EMAIL PROTECTED] 2001-11-13 08:09 ------- OK, let's start with the documentation bug - it is documented in my copy, but I'm not 100% sure that the paragraph The classpath can be specified via a nested <classpath>, as well - that is, a path-like structure. has always been there - I've changed the file to add a heading and make it more visible now. No, a nested <classpath> element will do exactly the same as your classpathref attribute. Let me rephrase what I've written in the style case for regexp - it is not about conflicting libraries or so: org.apache.tools.ant.util.regexp.JakartaRegexpRegexp is part of optional.jar. optional.jar is in ANT_HOME/lib and thus will be put into CLASSPATH, which means it can be found by the system classloader - the parent of all classloaders. You give an additional classpath that contains the jakarta-regexp library and maybe even set the system property to tell Ant you want to use jakarta-regexp. Ant tries to load org.apache.tools.ant.util.regexp.JakartaRegexpRegexp via a new classloader that contains the CLASSPATH you've specified. Being a good classloader, Ant's classloader does like Sun asks it to do and consults the system classloader first. Great, the class can be found and loaded via the system classloader. Now, this class needs additional classes from the JAR you've supplied - it tries to load them, but as it has been loaded via the system classloader, it doesn't know about your JAR and fails to find the classes. This is where my proposed solution kicks in, remove the class from optional.jar. If the class cannot be found via the system classloader, you can specify the additional library as well. I hope this is at least a little clearer. -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
