---- you Isaac Shabtay wrote ---- > jaxp.jar contains an implementation of > javax.xml.parsers.DocumentBuilderFactory. This implementation's > "newInstance" method does the search using the four steps above. When it > comes to step number 4, it looks for Crimson. > > So, if tomorrow there'll be another vendor who wants to create a new XML > parser that follows JAXP, he'll have to write *his own* version of > javax.xml.parsers.DocumentBuilderFactory; in his own version, he'll make > newInstance() to look for "my.own.document.builder.Factory" instead of > "com.sun.blahblah".
Actually I think I disagree. Users have three chances to override the defaults; application developers have effectively two. One of the major points of the services stuff is that there are multiple ways that the implementation can be specified - and the search set is specified. One of the prime ways is so that any implementer who supplies a .jar file can supply their own MEAT-INF/services stuff - which is read before the platform default. Thus any implementer who wants their implementation used merely needs to supply this file and make sure their .jar appears earlier in the classpath than anyone else who specifies the same service. Of course users or app developers with install programs can also always use a jaxp.properties (perhaps site administrators could use this...) or a system property to specify it. Part of this point is that each .jar specifies those implementations that it supports, making it kind of self-contained. So there are plenty of ways to override this default setting. I'd almost argue that I'd like to see Sun's RI builds explicitly set this, since those builds supply implementations, and would want those implementations used if possible (while users could always specifically override this). But it doesn't really matter, since the .jars in the RI builds will always have the META-INF/services stuff set to themselves, so as long as those .jar files are in the classpath, those implementations will be used and the default will never be called. - Shane ===== <eof aka="mailto:[EMAIL PROTECTED]"; quote="A mirror is like a window on the other side of behind you."/> __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com --------------------------------------------------------------------- In case of troubles, e-mail: [EMAIL PROTECTED] To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
