Re: XMLC 2.2 Alpha 2 and Examples released (Download location)

Here are some more modifications including adding Tomcat's web.xml from
Tomcat-4.1.12 to the res/conf directory.  This makes it so that the
app's web.xml file doesn't need to reference platform specific servlets
(like Tomcat's default servlet).  I also cleaned up the build file,
added some compiler properties to the build.properties file, and modified
the server.xml to point to ports that are less likely to be in use by
another version of Tomcat running on the same machine.  Now you
access the servlet via:
http://localhost:8081/xmlc/

BTW, why are all the parameters for
org.enhydra.xml.xmlc.servlet.XMLCContext provided via
<context-param>'s rather than servlet params specifically for
XMLCContext?  Why do they need to be global to the webapp?

Also, is it possible to provide the reloading via a URL or InputStream
instead of using File IO?  File IO in webapps is *not*
portable.  If you deploy the webapp via a .war file and not out of a
directory on the filesystem, there is no file IO possible except for some
path outside the webapp (if access has been provided by the host file
system) or in the server's tempdir (defined by the servlet spec). 
Either way, it would be nice to be able to specify a directory for source
files relative to the current webapp instead of a fully qualified
hardcoded path.  If it were File IO, they could be loaded via
context.getRealPath("/path/within/webapp").  I guess I
haven't looked at the XMLCContext source yet.  I'll do that
tomorrow.

Jake

At 05:50 AM 12/1/2002 -0600, you wrote:

> Here are some slight modifications
> to the example app make things work for both Unix and Windows users out
> of the box (attached zip file).  I've included only the files that
> were modified.  Should be obvious where they go.
>
> Jake
>
>
>
> At 02:34 PM 11/30/2002 -0600, you wrote:
>
> > Hi David,
> >
> > Is the XMLC reloading mechanism or anywhere else using Class.forName() to
> > load classes?  This would explain the lack of ability to load
> > classes across classloaders.  Any instance of Class.forName(String)
> > should be changed to
> > Thread.currentThread().getContextClassLoader().loadClass(String). 
> > I'm pretty sure that will fix most of the classloading issues I have
> > experienced.
> >
> > jake
> >
> > At 05:07 AM 11/29/2002 +0800, you wrote:
> > > Hi 
> > >
> > >   Are you running this under Cygnus shell or Cmd? What's your JDK
> > > version? 
> > >
> > >   I just tested on Windows machine and it works fine after I remove
> > > the xercesImpl.jar/xml-api.jar from Ant's lib. I use cmd and fresh copy
> > > of Ant/Tomcat/XMLC. It works except a path separator problem in the
> > > examples/tomcat/build/webapps/xmlc/WEB-INF/web.xml has to be fixed.
> > > Turning the / to \ in the file. 
> > >
> > > David 
> > >
> > >
> > > On Friday, Nov 29, 2002, at 15:55 Asia/Shanghai, Jacob Kjome wrote:
> > >
> > >
> > > > Hi David, 
> > > >
> > > > I'm getting the following error trying to build the example app.  I
> > > > think this would be solved if I could put a "classpathref attribute
> > > > on the 
> > > > <xmlc ..../> element or use a nested <classpath> element,
> > > > neither of which are supported by the Xmlc taskdef.  However, the
> > > > Localize taskdef from the Barracuda project which extends the Xmlc
> > > > taskdef supports both strategies for adding a classpath.  I guess
> > > > first, I'm not sure how you got the build to run correctly and second,
> > > > maybe the Xmlc taskdef needs to support the classpathref attribute and
> > > > the nested <classpath> elements.  BTW, I did set the xmlc.home
> > > > and tomcat.home properties correctly in build.properties. .......
> > > >
> > > > compile: 
> > > >      [xmlc] Invoke XMLC on
> > > > D:\myclasses\Servlets\xmlc-2.2-reloading\xmlc-2.2.alp 
> > > > ha.2\examples\tomcat\res\pkg\xmlc\demo\test01.html 
> > > >      [xmlc] Error:
> > > > java.lang.IllegalArgumentException: PAR003 Class, "org.enhydr 
> > > > a.xml.xmlc.metadata.MetaDataDocument", not found. 
> > > >      [xmlc]
> > > > org.enhydra.xml.xmlc.metadata.MetaDataDocument 
> > > >      [xmlc] java.lang.IllegalArgumentException:
> > > > PAR003 Class, "org.enhydra.xml.x 
> > > > mlc.metadata.MetaDataDocument", not found. 
> > > >      [xmlc]
> > > > org.enhydra.xml.xmlc.metadata.MetaDataDocument 
> > > >      [xmlc]     at
> > > > org.apache.xerces.parsers.DOMParser.setDocumentClassName(DOMP 
> > > > arser.java:510) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.io.DOMParser$XercesParser.<init>(DOMParser.ja 
> > > > va:97) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.io.DOMParser.parse(DOMParser.java:170) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.metadata.MetaDataDocument.doParseMetaDat 
> > > > a(MetaDataDocument.java:145) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.metadata.MetaDataDocument.parseMetaData( 
> > > > MetaDataDocument.java:180) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.options.OptionsParser.parseMeta 
> > > > DataFile(OptionsParser.java:227) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.options.OptionsParser.parseMeta 
> > > > DataOptionsFile(OptionsParser.java:243) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.options.OptionsParser.parseMeta 
> > > > DataOptionsFiles(OptionsParser.java:260) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.options.OptionsParser.parse(Opt 
> > > > ionsParser.java:320) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.xmlc.XMLCOptionsParser.parse(XM 
> > > > LCOptionsParser.java:75) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.xmlc.XMLC.parseArgs(XMLC.java:1 
> > > > 01) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.xmlc.XMLC.compile(XMLC.java:121 
> > > > ) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.xmlc.XMLC.compileHandleErrors(X 
> > > > MLC.java:142) 
> > > >      [xmlc]     at
> > > > org.enhydra.xml.xmlc.commands.xmlc.XMLC.main(XMLC.java:153) 
> > > >      [xmlc]     at
> > > > sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
> > > >      [xmlc]     at
> > > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcces 
> > > > sorImpl.java:39) 
> > > >      [xmlc]     at
> > > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMet 
> > > > hodAccessorImpl.java:25) 
> > > >      [xmlc]     at
> > > > java.lang.reflect.Method.invoke(Method.java:324) 
> > > >      [xmlc]     at
> > > > org.enhydra.barracuda.taskdefs.Xmlc.execute(Xmlc.java:584) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.UnknownElement.execute(UnknownElement.ja 
> > > > va:166) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Task.perform(Task.java:319) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Target.execute(Target.java:309) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Target.performTasks(Target.java:336) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Project.executeTarget(Project.java:1306) 
> > > >
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Project.executeTargets(Project.java:1250 
> > > > ) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Main.runBuild(Main.java:610) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Main.start(Main.java:196) 
> > > >      [xmlc]     at
> > > > org.apache.tools.ant.Main.main(Main.java:235) 
> > > > D:\myclasses\Servlets\xmlc-2.2-reloading\xmlc-2.2.alpha.2\examples\tomcat>
> > > >
> > > > Jake 
> > > >
> > > > At 01:52 AM 11/28/2002 +0800, you wrote: 
> > > >
> > > > The release is at the same location: 
> > > >
> > > > http://homepage.mac.com/taweili/XMLC.html
> > > >
> > > > David 
> > > >
> > > >
> > > > On Thursday, Nov 28, 2002, at 01:31 Asia/Shanghai, David Li wrote:
> > > >
> > > > The release fixes several bugs and updates several helpers classes to
> > > > ease the integration of XMLC in a servlet containers. This new release
> > > > contains an example webapp using the new reloading for XMLC which can be
> > > > easily deploy under Tomcat containers. (nothing Tomcat specific about it
> > > > but I just have time to test it on Tomcat.) 
> > > >
> > > > The attached is the README for the example. 
> > > >
> > > > David 
> > > >
> > > > --- 
> > > >
> > > > This is an example program to demo how to use XMLC in a Servlet. The
> > > > example is use Tomcat 4.1.12, other containers have not been tested.
> > > >
> > > > Configuration: 
> > > >
> > > >   Copy the 'build.properties.examples' to 'build.properties' and
> > > > edit 
> > > >   the two properties according to your local setup. 
> > > >
> > > > Build: 
> > > >
> > > >   Simply 'ant' 
> > > >
> > > > Running: 
> > > >
> > > >   A script run-tomcat.sh will be created in this directory. Just
> > > > type 
> > > >
> > > >   $ ./run-tomcat.sh 
> > > >
> > > > Accessing the demo: 
> > > >
> > > >   The demo servlet is located at /xmlc/ReloadTest and can be access
> > > > with 
> > > >  
> > > > http://localhost:8080/xmlc/ReloadTest
> > > >
> > > >   The servlet expects a 'docClass' or a
> > > > 'doc' parameter pointing to 
> > > >   the document to be retrived. 
> > > >
> > > >   The 'docClass' parameter points to a fully qualified classname of
> > > > a 
> > > >   XMLC compiled page. Currently available document class are:
> > > >
> > > >     Compiled from res/pkg, 
> > > >
> > > >       xmlc.demo.test01HTML 
> > > >       xmlc.demo.test02HTML 
> > > >
> > > >     Compiled from res/page 
> > > >
> > > >       xmlc.page.page01HTML 
> > > >       xmlc.page.page02HTML 
> > > >
> > > >     Example: 
> > > >
> > > >       
> > > > http://localhost:8080/xmlc/ReloadTest?docClass=xmlc.page.page02HTML
> > > >
> > > >   The 'doc' parameter points to a relative
> > > > path name of a page to be 
> > > >   compiled and retrieved. These pages do not have to be precompiled
> > > > by 
> > > >   XMLC in order to be loaded and use as a XMLObject. Currently 
> > > >   available documents are: 
> > > >
> > > >       dyna/dyna01.html 
> > > >       dyna/dyna02.html 
> > > >
> > > >     The following pages are the source of the above
> > > > compiled XMLC 
> > > >     class. They can be loaded with the following path
> > > > name. However, 
> > > >     loading them will only return a XMLObject, not the
> > > > above named 
> > > >     class/interface. 
> > > >
> > > >       page/page01.html 
> > > >       page/page02.html 
> > > >       pkg/xmlc/demo/test01.html 
> > > >       pkg/xmlc/demo/test02.html 
> > > >
> > > >     Examples: 
> > > >
> > > >      
> > > > http://localhost:8080/xmlc/ReloadTest?doc=dyna/dyna01.html
> > > >
> > > > ReloadTest source: 
> > > >
> > > >   The source code for ReloadTest servlet is located under 
> > > >   src/xmlc/demo/ReloadTest.java. This file demostracted the use of
> > > > the 
> > > >   following class: 
> > > >
> > > >     org.enhydra.xml.xmlc.servlet.XMLCContext: 
> > > >
> > > >       This is a convenient class to integrate
> > > > XMLC with Servlet. It 
> > > >       configure the XMLCFactory with parameter
> > > > from Servlet 
> > > >       context. In this demo, the configuration
> > > > is done in 
> > > >       res/webapps/xmlc/WEB-INF/web.xml for the
> > > > XMLC WebApp. The 
> > > >       document on the parameters can be found in
> > > > the javadoc of 
> > > >       org.enhydra.xml.xmlc.servlet.XMLCContext.
> > > >
> > > >       This class also provides methods to
> > > > serialize of XMLObject 
> > > >       object to the response with various of
> > > > configuration. 
> > > >
> > > >    
> > > > org.enhydra.xml.xmlc.deferredparsing.XMLCDeferredParsingFactory:
> > > >
> > > >       The dynamic page loading using method the
> > > > createFromFile which 
> > > >       is specific to this call and not in
> > > > XMLCFactory. The use of this 
> > > >       method is demo here. 
> > > >
> > > > _______________________________________________ 
> > > > XMLC mailing list 
> > > > XMLC@xxxxxxxxxxx 
> > > > http://www.enhydra.org/mailman/listinfo.cgi/xmlc
> > > >
> > > >
> > > > _______________________________________________ 
> > > > XMLC mailing list 
> > > > XMLC@xxxxxxxxxxx 
> > > > http://www.enhydra.org/mailman/listinfo.cgi/xmlc
> > > </blockquote></x-html>

example.mod.zip
Description: Zip archive