I've found something about the Stream Generator in the Cocoon documentation.
I've made the following modifications to the file sitemap.xmap :
<map:generators default="file">
...
<map:generator name="stream"
src="org.apache.cocoon.generation.StreamGenerator"/>
</map:generators>
<!-- ========================== Stream ================================= -->
<map:match pattern="request1">
<map:generate type="stream">
<!-- <map:parameter name="form-name" value="Foo"/> -->
<map:parameter name="FORM1" value="Foo"/>
</map:generate>
<map:serialize type="xml"/>
</map:match>
<map:match pattern="Order">
<map:generate src="docs/samples/stream/OrderPage.xml"/>
<map:transform src="stylesheets/dynamic-page2html.xsl"/>
<map:serialize type="html"/>
</map:match>
But I got this error :
Error creating the resource
Exception in StreamGenerator.generate()
details
from
source org.apache.cocoon.ProcessingException
description org.apache.cocoon.ProcessingException: Exception in
StreamGenerator.generate():java.lang.NullPointerException
extra info
java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java, Compiled Code)
at org.apache.tomcat.core.RequestImpl.getParameterValues
(RequestImpl.java, Compiled Code)
at org.apache.tomcat.core.RequestImpl.getParameter(RequestImpl.java,
Compiled Code)
at org.apache.tomcat.facade.HttpServletRequestFacade.getParameter
(HttpServletRequestFacade.java, Compiled Code)
at org.apache.cocoon.environment.http.HttpRequest.getParameter
(HttpRequest.java, Compiled Code)
at org.apache.cocoon.generation.StreamGenerator.generate
(StreamGenerator.java, Compiled Code)
at org.apache.cocoon.components.pipeline.AbstractEventPipeline.process
(AbstractEventPipeline.java, Compiled Code)
at org.apache.cocoon.components.pipeline.AbstractStreamPipeline.process
(AbstractStreamPipeline.java, Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.wildcardMatchN409
(sitemap_xmap.java, Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java,
Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java,
Compiled Code)
at org.apache.cocoon.sitemap.Handler.process(Handler.java, Compiled
Code)
at org.apache.cocoon.sitemap.Manager.invoke(Manager.java, Compiled Code)
at org.apache.cocoon.Cocoon.process(Cocoon.java, Compiled Code)
at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java,
Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.Handler.service(Handler.java, Compiled Code)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.ContextManager.internalService
(ContextManager.java, Compiled Code)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java,
Compiled Code)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection
(HttpConnectionHandler.java, Compiled Code)
at org.apache.tomcat.service.TcpWorkerThread.runIt
(PoolTcpEndpoint.java, Compiled Code)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
(ThreadPool.java, Compiled Code)
at java.lang.Thread.run(Thread.java, Compiled Code)
java.lang.NullPointerException
org.apache.cocoon.ProcessingException: Exception in StreamGenerator.generate
():java.lang.NullPointerException
at org.apache.cocoon.generation.StreamGenerator.generate
(StreamGenerator.java, Compiled Code)
at org.apache.cocoon.components.pipeline.AbstractEventPipeline.process
(AbstractEventPipeline.java, Compiled Code)
at org.apache.cocoon.components.pipeline.AbstractStreamPipeline.process
(AbstractStreamPipeline.java, Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.wildcardMatchN409
(sitemap_xmap.java, Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java,
Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java,
Compiled Code)
at org.apache.cocoon.sitemap.Handler.process(Handler.java, Compiled
Code)
at org.apache.cocoon.sitemap.Manager.invoke(Manager.java, Compiled Code)
at org.apache.cocoon.Cocoon.process(Cocoon.java, Compiled Code)
at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java,
Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.Handler.service(Handler.java, Compiled Code)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.ContextManager.internalService
(ContextManager.java, Compiled Code)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java,
Compiled Code)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection
(HttpConnectionHandler.java, Compiled Code)
at org.apache.tomcat.service.TcpWorkerThread.runIt
(PoolTcpEndpoint.java, Compiled Code)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
(ThreadPool.java, Compiled Code)
at java.lang.Thread.run(Thread.java, Compiled Code)
java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java, Compiled Code)
at org.apache.tomcat.core.RequestImpl.getParameterValues
(RequestImpl.java, Compiled Code)
at org.apache.tomcat.core.RequestImpl.getParameter(RequestImpl.java,
Compiled Code)
at org.apache.tomcat.facade.HttpServletRequestFacade.getParameter
(HttpServletRequestFacade.java, Compiled Code)
at org.apache.cocoon.environment.http.HttpRequest.getParameter
(HttpRequest.java, Compiled Code)
at org.apache.cocoon.generation.StreamGenerator.generate
(StreamGenerator.java, Compiled Code)
at org.apache.cocoon.components.pipeline.AbstractEventPipeline.process
(AbstractEventPipeline.java, Compiled Code)
at org.apache.cocoon.components.pipeline.AbstractStreamPipeline.process
(AbstractStreamPipeline.java, Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.wildcardMatchN409
(sitemap_xmap.java, Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java,
Compiled Code)
at org.apache.cocoon.www.sitemap_xmap.process(sitemap_xmap.java,
Compiled Code)
at org.apache.cocoon.sitemap.Handler.process(Handler.java, Compiled
Code)
at org.apache.cocoon.sitemap.Manager.invoke(Manager.java, Compiled Code)
at org.apache.cocoon.Cocoon.process(Cocoon.java, Compiled Code)
at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java,
Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.Handler.service(Handler.java, Compiled Code)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java,
Compiled Code)
at org.apache.tomcat.core.ContextManager.internalService
(ContextManager.java, Compiled Code)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java,
Compiled Code)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection
(HttpConnectionHandler.java, Compiled Code)
at org.apache.tomcat.service.TcpWorkerThread.runIt
(PoolTcpEndpoint.java, Compiled Code)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
(ThreadPool.java, Compiled Code)
at java.lang.Thread.run(Thread.java, Compiled Code)
org.apache.cocoon.ProcessingException: Exception in StreamGenerator.generate
():java.lang.NullPointerException
Have anyone made work this example about the Request Generator ?
I need to get xml passing by a request.
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