How to inject my own ScriptSessionManager implementation in Spring?

[pinecone_web]

Hi,

I am trying to put DWR and Spring together on Google App Engine (GAE). I follow the instructions http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html that configures a Spring DispatcherServlet and maps all DWR-related request to a DwrController. Here is a snippet of my spring config xml:

<context:annotation-config />
<aop:aspectj-autoproxy proxy-target-class="false" />
<dwr:configuration />
<dwr:annotation-config />
<dwr:url-mapping />
<dwr:controller id="dwrController" debug="true" />
<context:component-scan base-package="com.my.package.name" scoped-proxy="interfaces" />
 

To walk around the thread-creation limitation on GAE, I have implemented my own ScriptSessionManager (following this thread: http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I don't know how to inject my own ScriptSessionManager implementation to DWR through Spring configuration. In that thread the example

<servlet>
    <servlet-name>dwr-invoker</servlet-name>
    <display-name>DWR Servlet</display-name>
    <description>Direct Web Remoter Servlet</description>
    <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
    <init-param>
        <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
        <param-value>foo.bar.MyScriptSessionManager</param-value>
    </init-param>
</servlet>


does not work since I use Spring DispatcherServlet rather than DwrServlet. Can someone help?

Thanks in advance.

[pinecone_web]

Hi,

By the way, I tried in my spring config xml:

<dwr:controller id="dwrController" debug="true">
                <dwr:config-param name="org.directwebremoting.extend.ScriptSessionManager" value="foo.bar.MyScriptSessionManager"/>
</dwr:controller>

But I still get the error: "java.lang.NoClassDefFoundError: javax.swing.event.EventListenerList is a restricted class." caused by DefaultScriptSessionManager.

What am I doing wrong?

pinecone_web wrote:

Hi,

I am trying to put DWR and Spring together on Google App Engine (GAE). I follow the instructions http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html that configures a Spring DispatcherServlet and maps all DWR-related request to a DwrController. Here is a snippet of my spring config xml:

<context:annotation-config />
<aop:aspectj-autoproxy proxy-target-class="false" />
<dwr:configuration />
<dwr:annotation-config />
<dwr:url-mapping />
<dwr:controller id="dwrController" debug="true" />
<context:component-scan base-package="com.my.package.name" scoped-proxy="interfaces" />
 

To walk around the thread-creation limitation on GAE, I have implemented my own ScriptSessionManager (following this thread: http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I don't know how to inject my own ScriptSessionManager implementation to DWR through Spring configuration. In that thread the example

<servlet>
    <servlet-name>dwr-invoker</servlet-name>
    <display-name>DWR Servlet</display-name>
    <description>Direct Web Remoter Servlet</description>
    <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
    <init-param>
        <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
        <param-value>foo.bar.MyScriptSessionManager</param-value>
    </init-param>
</servlet>


does not work since I use Spring DispatcherServlet rather than DwrServlet. Can someone help?

Thanks in advance.

[XMaNIaC]

Have you tried adding the parameter to <dwr:controller/>?

Regards

On Fri, Oct 23, 2009 at 3:29 AM, pinecone_web <brandon.shwu@...> wrote:

Hi,

I am trying to put DWR and Spring together on Google App Engine (GAE). I
follow the instructions
http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
that configures a Spring DispatcherServlet and maps all DWR-related request
to a DwrController. Here is a snippet of my spring config xml:

<context:annotation-config />
<aop:aspectj-autoproxy proxy-target-class="false" />
<dwr:configuration />
<dwr:annotation-config />
<dwr:url-mapping />
<dwr:controller id="dwrController" debug="true" />
<context:component-scan base-package="com.my.package.name"
scoped-proxy="interfaces" />


To walk around the thread-creation limitation on GAE, I have implemented my
own ScriptSessionManager (following this thread:
http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I don't
know how to inject my own ScriptSessionManager implementation to DWR through
Spring configuration. In that thread the example

<servlet>
   <servlet-name>dwr-invoker</servlet-name>
   <display-name>DWR Servlet</display-name>
   <description>Direct Web Remoter Servlet</description>
   <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
   <init-param>

<param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
       <param-value>foo.bar.MyScriptSessionManager</param-value>
   </init-param>
</servlet>


does not work since I use Spring DispatcherServlet rather than DwrServlet.
Can someone help?

Thanks in advance.


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[Lance Java]

unfortunately GAE does not allow javax.swing.event.EventListenerList. You will need to implement a script session manager that does not use this class.

2009/10/23 pinecone_web <brandon.shwu@...>

Hi,

By the way, I tried in my spring config xml:

<dwr:controller id="dwrController" debug="true">

               <dwr:config-param name="org.directwebremoting.extend.ScriptSessionManager"
value="foo.bar.MyScriptSessionManager"/>
</dwr:controller>

But I still get the error: "java.lang.NoClassDefFoundError:
javax.swing.event.EventListenerList is a restricted class." caused by
DefaultScriptSessionManager.

What am I doing wrong?

pinecone_web wrote:
>
> Hi,
>
> I am trying to put DWR and Spring together on Google App Engine (GAE). I
> follow the instructions
> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
> that configures a Spring DispatcherServlet and maps all DWR-related
> request to a DwrController. Here is a snippet of my spring config xml:
>
> <context:annotation-config />
> <aop:aspectj-autoproxy proxy-target-class="false" />
> <dwr:configuration />
> <dwr:annotation-config />
> <dwr:url-mapping />
> <dwr:controller id="dwrController" debug="true" />
> <context:component-scan base-package="com.my.package.name"
> scoped-proxy="interfaces" />
>
>
> To walk around the thread-creation limitation on GAE, I have implemented
> my own ScriptSessionManager (following this thread:
> http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I don't
> know how to inject my own ScriptSessionManager implementation to DWR
> through Spring configuration. In that thread the example
>
> <servlet>
>     <servlet-name>dwr-invoker</servlet-name>
>     <display-name>DWR Servlet</display-name>
>     <description>Direct Web Remoter Servlet</description>
>
> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
>     <init-param>
>
> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
>         <param-value>foo.bar.MyScriptSessionManager</param-value>
>     </init-param>
> </servlet>
>
>
> does not work since I use Spring DispatcherServlet rather than DwrServlet.
> Can someone help?
>
> Thanks in advance.
>
>
>

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[pinecone_web]

Yes, I know. I just don't know how to inject my MyScriptSessionManager (I tried  

<dwr:controller id="dwrController" debug="true">
    <dwr:config-param name="org.directwebremoting.extend.ScriptSessionManager value="foo.bar.MyScriptSessionManager"/>
</dwr:controller>

)

After looking into the code, I found the cause: Even I provid the MyScriptSessionManager as a config parameter of DwrController, the DefaultScriptSessionManager will STILL BE INITIATED by the DefaultContainer since it is specified in "default.properties." I have removed the mapping from ScriptSessionManager to DefaultScriptSessionManager from this file and the error message disappears.

However, this approach requires recompilning. Any other way which does not require recompiling?

Lance Java wrote:

unfortunately GAE does not allow javax.swing.event.EventListenerList. You
will need to implement a script session manager that does not use this
class.

2009/10/23 pinecone_web <[e-mail]>

>
> Hi,
>
> By the way, I tried in my spring config xml:
>
> <dwr:controller id="dwrController" debug="true">
>                <dwr:config-param
> name="org.directwebremoting.extend.ScriptSessionManager"
> value="foo.bar.MyScriptSessionManager"/>
> </dwr:controller>
>
> But I still get the error: "java.lang.NoClassDefFoundError:
> javax.swing.event.EventListenerList is a restricted class." caused by
> DefaultScriptSessionManager.
>
> What am I doing wrong?
>
>
>
> pinecone_web wrote:
> >
> > Hi,
> >
> > I am trying to put DWR and Spring together on Google App Engine (GAE). I
> > follow the instructions
> >
> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
> > that configures a Spring DispatcherServlet and maps all DWR-related
> > request to a DwrController. Here is a snippet of my spring config xml:
> >
> > <context:annotation-config />
> > <aop:aspectj-autoproxy proxy-target-class="false" />
> > <dwr:configuration />
> > <dwr:annotation-config />
> > <dwr:url-mapping />
> > <dwr:controller id="dwrController" debug="true" />
> > <context:component-scan base-package="com.my.package.name"
> > scoped-proxy="interfaces" />
> >
> >
> > To walk around the thread-creation limitation on GAE, I have implemented
> > my own ScriptSessionManager (following this thread:
> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I don't
> > know how to inject my own ScriptSessionManager implementation to DWR
> > through Spring configuration. In that thread the example
> >
> > <servlet>
> >     <servlet-name>dwr-invoker</servlet-name>
> >     <display-name>DWR Servlet</display-name>
> >     <description>Direct Web Remoter Servlet</description>
> >
> > <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
> >     <init-param>
> >
> >
> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
> >     </init-param>
> > </servlet>
> >
> >
> > does not work since I use Spring DispatcherServlet rather than
> DwrServlet.
> > Can someone help?
> >
> > Thanks in advance.
> >
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
>  Sent from the DWR - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [e-mail]
> For additional commands, e-mail: [e-mail]
>
>

[Lance Java]

This sounds like a bug as the DefaultScriptSessionManager class should not be loaded into memory if you provide your own implementation (unless of course you have extended this class). Do you have a stack trace?

2009/10/23 pinecone_web <brandon.shwu@...>

Yes, I know. I just don't know how to inject my MyScriptSessionManager (I
tried

<dwr:controller id="dwrController" debug="true">
   <dwr:config-param
name="org.directwebremoting.extend.ScriptSessionManager
value="foo.bar.MyScriptSessionManager"/>
</dwr:controller>

)

After looking into the code, I found the cause: Even I provid the
MyScriptSessionManager as a config parameter of DwrController, the
DefaultScriptSessionManager will STILL BE INITIATED by the DefaultContainer
since it is specified in "default.properties." I have removed the mapping
from ScriptSessionManager to DefaultScriptSessionManager from this file and
the error message disappears.

However, this approach requires recompilning. Any other way which does not
require recompiling?

Lance Java wrote:
>
> unfortunately GAE does not allow javax.swing.event.EventListenerList. You
> will need to implement a script session manager that does not use this
> class.
>
> 2009/10/23 pinecone_web <brandon.shwu@...>
>
>>
>> Hi,
>>
>> By the way, I tried in my spring config xml:
>>
>> <dwr:controller id="dwrController" debug="true">
>>                <dwr:config-param
>> name="org.directwebremoting.extend.ScriptSessionManager"
>> value="foo.bar.MyScriptSessionManager"/>
>> </dwr:controller>
>>
>> But I still get the error: "java.lang.NoClassDefFoundError:
>> javax.swing.event.EventListenerList is a restricted class." caused by
>> DefaultScriptSessionManager.
>>
>> What am I doing wrong?
>>
>>
>>
>> pinecone_web wrote:
>> >
>> > Hi,
>> >
>> > I am trying to put DWR and Spring together on Google App Engine (GAE).
>> I
>> > follow the instructions
>> >
>> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
>> > that configures a Spring DispatcherServlet and maps all DWR-related
>> > request to a DwrController. Here is a snippet of my spring config xml:
>> >
>> > <context:annotation-config />
>> > <aop:aspectj-autoproxy proxy-target-class="false" />
>> > <dwr:configuration />
>> > <dwr:annotation-config />
>> > <dwr:url-mapping />
>> > <dwr:controller id="dwrController" debug="true" />
>> > <context:component-scan base-package="com.my.package.name"
>> > scoped-proxy="interfaces" />
>> >
>> >
>> > To walk around the thread-creation limitation on GAE, I have
>> implemented
>> > my own ScriptSessionManager (following this thread:
>> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I
>> don't
>> > know how to inject my own ScriptSessionManager implementation to DWR
>> > through Spring configuration. In that thread the example
>> >
>> > <servlet>
>> >     <servlet-name>dwr-invoker</servlet-name>
>> >     <display-name>DWR Servlet</display-name>
>> >     <description>Direct Web Remoter Servlet</description>
>> >
>> > <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
>> >     <init-param>
>> >
>> >
>> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
>> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
>> >     </init-param>
>> > </servlet>
>> >
>> >
>> > does not work since I use Spring DispatcherServlet rather than
>> DwrServlet.
>> > Can someone help?
>> >
>> > Thanks in advance.
>> >
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
>>  Sent from the DWR - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@...
>> For additional commands, e-mail: users-help@...
>>
>>
>
>

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[pinecone_web]

Hi Lance,

 Here it is:

java.lang.NoClassDefFoundError: javax.swing.event.EventListenerList is a restricted class. Please see the Google  App Engine developer's guide for more details.
     [java] at com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
     [java] at org.directwebremoting.impl.DefaultScriptSessionManager.<init>(DefaultScriptSessionManager.java:533)
     [java] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     [java] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     [java] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     [java] at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
     [java] at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:112)
     [java] at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:132)
     [java] at org.directwebremoting.impl.DefaultContainer.addParameter(DefaultContainer.java:101)
     [java] at org.directwebremoting.spring.SpringContainer.addParameter(SpringContainer.java:68)
     [java] at org.directwebremoting.impl.StartupUtil.setupDefaults(StartupUtil.java:508)
     [java] at org.directwebremoting.impl.StartupUtil.setupDefaultContainer(StartupUtil.java:244)
     [java] at org.directwebremoting.spring.DwrController.afterPropertiesSet(DwrController.java:189)
     [java] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
     [java] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
     [java] ... 55 more

Please let me know if you have done a fix.

Lance Java wrote:

This sounds like a bug as the DefaultScriptSessionManager class should not
be loaded into memory if you provide your own implementation (unless of
course you have extended this class). Do you have a stack trace?

2009/10/23 pinecone_web <[e-mail]>

>
> Yes, I know. I just don't know how to inject my MyScriptSessionManager (I
> tried
>
> <dwr:controller id="dwrController" debug="true">
>    <dwr:config-param
> name="org.directwebremoting.extend.ScriptSessionManager
> value="foo.bar.MyScriptSessionManager"/>
> </dwr:controller>
>
> )
>
> After looking into the code, I found the cause: Even I provid the
> MyScriptSessionManager as a config parameter of DwrController, the
> DefaultScriptSessionManager will STILL BE INITIATED by the DefaultContainer
> since it is specified in "default.properties." I have removed the mapping
> from ScriptSessionManager to DefaultScriptSessionManager from this file and
> the error message disappears.
>
> However, this approach requires recompilning. Any other way which does not
> require recompiling?
>
>
> Lance Java wrote:
> >
> > unfortunately GAE does not allow javax.swing.event.EventListenerList. You
> > will need to implement a script session manager that does not use this
> > class.
> >
> > 2009/10/23 pinecone_web <[e-mail]>
> >
> >>
> >> Hi,
> >>
> >> By the way, I tried in my spring config xml:
> >>
> >> <dwr:controller id="dwrController" debug="true">
> >>                <dwr:config-param
> >> name="org.directwebremoting.extend.ScriptSessionManager"
> >> value="foo.bar.MyScriptSessionManager"/>
> >> </dwr:controller>
> >>
> >> But I still get the error: "java.lang.NoClassDefFoundError:
> >> javax.swing.event.EventListenerList is a restricted class." caused by
> >> DefaultScriptSessionManager.
> >>
> >> What am I doing wrong?
> >>
> >>
> >>
> >> pinecone_web wrote:
> >> >
> >> > Hi,
> >> >
> >> > I am trying to put DWR and Spring together on Google App Engine (GAE).
> >> I
> >> > follow the instructions
> >> >
> >>
> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
> >> > that configures a Spring DispatcherServlet and maps all DWR-related
> >> > request to a DwrController. Here is a snippet of my spring config xml:
> >> >
> >> > <context:annotation-config />
> >> > <aop:aspectj-autoproxy proxy-target-class="false" />
> >> > <dwr:configuration />
> >> > <dwr:annotation-config />
> >> > <dwr:url-mapping />
> >> > <dwr:controller id="dwrController" debug="true" />
> >> > <context:component-scan base-package="com.my.package.name"
> >> > scoped-proxy="interfaces" />
> >> >
> >> >
> >> > To walk around the thread-creation limitation on GAE, I have
> >> implemented
> >> > my own ScriptSessionManager (following this thread:
> >> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I
> >> don't
> >> > know how to inject my own ScriptSessionManager implementation to DWR
> >> > through Spring configuration. In that thread the example
> >> >
> >> > <servlet>
> >> >     <servlet-name>dwr-invoker</servlet-name>
> >> >     <display-name>DWR Servlet</display-name>
> >> >     <description>Direct Web Remoter Servlet</description>
> >> >
> >> >
> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
> >> >     <init-param>
> >> >
> >> >
> >>
> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
> >> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
> >> >     </init-param>
> >> > </servlet>
> >> >
> >> >
> >> > does not work since I use Spring DispatcherServlet rather than
> >> DwrServlet.
> >> > Can someone help?
> >> >
> >> > Thanks in advance.
> >> >
> >> >
> >> >
> >>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
> >>  Sent from the DWR - Users mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: [e-mail]
> >> For additional commands, e-mail: [e-mail]
> >>
> >>
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26024938.html
> Sent from the DWR - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [e-mail]
> For additional commands, e-mail: [e-mail]
>
>

[Lance Java]

It seems like StartupUtil.java loads all of the classes in defaults.properties an then the overrides are applied which is not ideal. As a workaround, you might be able to put your own defaults.properties at
WEB-INF/classes/org/directwebremoting/defaults.properties

The at least you won't need to rebuild the jar... let me know if this works.

2009/10/25 pinecone_web <brandon.shwu@...>

Hi Lance,

 Here it is:

java.lang.NoClassDefFoundError: javax.swing.event.EventListenerList is a

restricted class. Please see the Google  App Engine developer's guide for
more details.
    [java]     at
com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
    [java]     at
org.directwebremoting.impl.DefaultScriptSessionManager.<init>(DefaultScriptSessionManager.java:533)
    [java]     at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    [java]     at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    [java]     at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    [java]     at
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    [java]     at
com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:112)
    [java]     at
com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:132)
    [java]     at
org.directwebremoting.impl.DefaultContainer.addParameter(DefaultContainer.java:101)
    [java]     at
org.directwebremoting.spring.SpringContainer.addParameter(SpringContainer.java:68)
    [java]     at
org.directwebremoting.impl.StartupUtil.setupDefaults(StartupUtil.java:508)
    [java]     at
org.directwebremoting.impl.StartupUtil.setupDefaultContainer(StartupUtil.java:244)
    [java]     at
org.directwebremoting.spring.DwrController.afterPropertiesSet(DwrController.java:189)
    [java]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
    [java]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
    [java]     ... 55 more

Please let me know if you have done a fix.

Lance Java wrote:
>
> This sounds like a bug as the DefaultScriptSessionManager class should not
> be loaded into memory if you provide your own implementation (unless of
> course you have extended this class). Do you have a stack trace?
>
> 2009/10/23 pinecone_web <brandon.shwu@...>
>
>>
>> Yes, I know. I just don't know how to inject my MyScriptSessionManager (I
>> tried
>>
>> <dwr:controller id="dwrController" debug="true">
>>    <dwr:config-param
>> name="org.directwebremoting.extend.ScriptSessionManager
>> value="foo.bar.MyScriptSessionManager"/>
>> </dwr:controller>
>>
>> )
>>
>> After looking into the code, I found the cause: Even I provid the
>> MyScriptSessionManager as a config parameter of DwrController, the
>> DefaultScriptSessionManager will STILL BE INITIATED by the
>> DefaultContainer
>> since it is specified in "default.properties." I have removed the mapping
>> from ScriptSessionManager to DefaultScriptSessionManager from this file
>> and
>> the error message disappears.
>>
>> However, this approach requires recompilning. Any other way which does
>> not
>> require recompiling?
>>
>>
>> Lance Java wrote:
>> >
>> > unfortunately GAE does not allow javax.swing.event.EventListenerList.
>> You
>> > will need to implement a script session manager that does not use this
>> > class.
>> >
>> > 2009/10/23 pinecone_web <brandon.shwu@...>
>> >
>> >>
>> >> Hi,
>> >>
>> >> By the way, I tried in my spring config xml:
>> >>
>> >> <dwr:controller id="dwrController" debug="true">
>> >>                <dwr:config-param
>> >> name="org.directwebremoting.extend.ScriptSessionManager"
>> >> value="foo.bar.MyScriptSessionManager"/>
>> >> </dwr:controller>
>> >>
>> >> But I still get the error: "java.lang.NoClassDefFoundError:
>> >> javax.swing.event.EventListenerList is a restricted class." caused by
>> >> DefaultScriptSessionManager.
>> >>
>> >> What am I doing wrong?
>> >>
>> >>
>> >>
>> >> pinecone_web wrote:
>> >> >
>> >> > Hi,
>> >> >
>> >> > I am trying to put DWR and Spring together on Google App Engine
>> (GAE).
>> >> I
>> >> > follow the instructions
>> >> >
>> >>
>> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
>> >> > that configures a Spring DispatcherServlet and maps all DWR-related
>> >> > request to a DwrController. Here is a snippet of my spring config
>> xml:
>> >> >
>> >> > <context:annotation-config />
>> >> > <aop:aspectj-autoproxy proxy-target-class="false" />
>> >> > <dwr:configuration />
>> >> > <dwr:annotation-config />
>> >> > <dwr:url-mapping />
>> >> > <dwr:controller id="dwrController" debug="true" />
>> >> > <context:component-scan base-package="com.my.package.name"
>> >> > scoped-proxy="interfaces" />
>> >> >
>> >> >
>> >> > To walk around the thread-creation limitation on GAE, I have
>> >> implemented
>> >> > my own ScriptSessionManager (following this thread:
>> >> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I
>> >> don't
>> >> > know how to inject my own ScriptSessionManager implementation to DWR
>> >> > through Spring configuration. In that thread the example
>> >> >
>> >> > <servlet>
>> >> >     <servlet-name>dwr-invoker</servlet-name>
>> >> >     <display-name>DWR Servlet</display-name>
>> >> >     <description>Direct Web Remoter Servlet</description>
>> >> >
>> >> >
>> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
>> >> >     <init-param>
>> >> >
>> >> >
>> >>
>> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
>> >> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
>> >> >     </init-param>
>> >> > </servlet>
>> >> >
>> >> >
>> >> > does not work since I use Spring DispatcherServlet rather than
>> >> DwrServlet.
>> >> > Can someone help?
>> >> >
>> >> > Thanks in advance.
>> >> >
>> >> >
>> >> >
>> >>
>> >> --
>> >> View this message in context:
>> >>
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
>> >>  Sent from the DWR - Users mailing list archive at Nabble.com.
>> >>
>> >>
>> >> ---------------------------------------------------------------------
>> >> To unsubscribe, e-mail: users-unsubscribe@...
>> >> For additional commands, e-mail: users-help@...
>> >>
>> >>
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26024938.html
>> Sent from the DWR - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@...
>> For additional commands, e-mail: users-help@...
>>
>>
>
>

--
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[pinecone_web]

Ya, that's exactly what I am doing right now to prevent recompiling.

Thank you very much :).

Lance Java wrote:

It seems like StartupUtil.java loads all of the classes in
defaults.properties an then the overrides are applied which is not ideal. As
a workaround, you might be able to put your own defaults.properties at
WEB-INF/classes/org/directwebremoting/defaults.properties

The at least you won't need to rebuild the jar... let me know if this works.

2009/10/25 pinecone_web <[e-mail]>

>
> Hi Lance,
>
>  Here it is:
>
> java.lang.NoClassDefFoundError: javax.swing.event.EventListenerList is a
> restricted class. Please see the Google  App Engine developer's guide for
> more details.
>     [java]     at
>
> com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
>     [java]     at
>
> org.directwebremoting.impl.DefaultScriptSessionManager.<init>(DefaultScriptSessionManager.java:533)
>     [java]     at
> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>     [java]     at
>
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>     [java]     at
>
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>     [java]     at
> java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>     [java]     at
>
> com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:112)
>     [java]     at
>
> com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:132)
>     [java]     at
>
> org.directwebremoting.impl.DefaultContainer.addParameter(DefaultContainer.java:101)
>     [java]     at
>
> org.directwebremoting.spring.SpringContainer.addParameter(SpringContainer.java:68)
>     [java]     at
> org.directwebremoting.impl.StartupUtil.setupDefaults(StartupUtil.java:508)
>     [java]     at
>
> org.directwebremoting.impl.StartupUtil.setupDefaultContainer(StartupUtil.java:244)
>     [java]     at
>
> org.directwebremoting.spring.DwrController.afterPropertiesSet(DwrController.java:189)
>     [java]     at
>
> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
>     [java]     at
>
> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
>     [java]     ... 55 more
>
> Please let me know if you have done a fix.
>
>
>
> Lance Java wrote:
> >
> > This sounds like a bug as the DefaultScriptSessionManager class should
> not
> > be loaded into memory if you provide your own implementation (unless of
> > course you have extended this class). Do you have a stack trace?
> >
> > 2009/10/23 pinecone_web <[e-mail]>
> >
> >>
> >> Yes, I know. I just don't know how to inject my MyScriptSessionManager
> (I
> >> tried
> >>
> >> <dwr:controller id="dwrController" debug="true">
> >>    <dwr:config-param
> >> name="org.directwebremoting.extend.ScriptSessionManager
> >> value="foo.bar.MyScriptSessionManager"/>
> >> </dwr:controller>
> >>
> >> )
> >>
> >> After looking into the code, I found the cause: Even I provid the
> >> MyScriptSessionManager as a config parameter of DwrController, the
> >> DefaultScriptSessionManager will STILL BE INITIATED by the
> >> DefaultContainer
> >> since it is specified in "default.properties." I have removed the
> mapping
> >> from ScriptSessionManager to DefaultScriptSessionManager from this file
> >> and
> >> the error message disappears.
> >>
> >> However, this approach requires recompilning. Any other way which does
> >> not
> >> require recompiling?
> >>
> >>
> >> Lance Java wrote:
> >> >
> >> > unfortunately GAE does not allow javax.swing.event.EventListenerList.
> >> You
> >> > will need to implement a script session manager that does not use this
> >> > class.
> >> >
> >> > 2009/10/23 pinecone_web <[e-mail]>
> >> >
> >> >>
> >> >> Hi,
> >> >>
> >> >> By the way, I tried in my spring config xml:
> >> >>
> >> >> <dwr:controller id="dwrController" debug="true">
> >> >>                <dwr:config-param
> >> >> name="org.directwebremoting.extend.ScriptSessionManager"
> >> >> value="foo.bar.MyScriptSessionManager"/>
> >> >> </dwr:controller>
> >> >>
> >> >> But I still get the error: "java.lang.NoClassDefFoundError:
> >> >> javax.swing.event.EventListenerList is a restricted class." caused by
> >> >> DefaultScriptSessionManager.
> >> >>
> >> >> What am I doing wrong?
> >> >>
> >> >>
> >> >>
> >> >> pinecone_web wrote:
> >> >> >
> >> >> > Hi,
> >> >> >
> >> >> > I am trying to put DWR and Spring together on Google App Engine
> >> (GAE).
> >> >> I
> >> >> > follow the instructions
> >> >> >
> >> >>
> >>
> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
> >> >> > that configures a Spring DispatcherServlet and maps all DWR-related
> >> >> > request to a DwrController. Here is a snippet of my spring config
> >> xml:
> >> >> >
> >> >> > <context:annotation-config />
> >> >> > <aop:aspectj-autoproxy proxy-target-class="false" />
> >> >> > <dwr:configuration />
> >> >> > <dwr:annotation-config />
> >> >> > <dwr:url-mapping />
> >> >> > <dwr:controller id="dwrController" debug="true" />
> >> >> > <context:component-scan base-package="com.my.package.name"
> >> >> > scoped-proxy="interfaces" />
> >> >> >
> >> >> >
> >> >> > To walk around the thread-creation limitation on GAE, I have
> >> >> implemented
> >> >> > my own ScriptSessionManager (following this thread:
> >> >> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However, I
> >> >> don't
> >> >> > know how to inject my own ScriptSessionManager implementation to
> DWR
> >> >> > through Spring configuration. In that thread the example
> >> >> >
> >> >> > <servlet>
> >> >> >     <servlet-name>dwr-invoker</servlet-name>
> >> >> >     <display-name>DWR Servlet</display-name>
> >> >> >     <description>Direct Web Remoter Servlet</description>
> >> >> >
> >> >> >
> >> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
> >> >> >     <init-param>
> >> >> >
> >> >> >
> >> >>
> >>
> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
> >> >> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
> >> >> >     </init-param>
> >> >> > </servlet>
> >> >> >
> >> >> >
> >> >> > does not work since I use Spring DispatcherServlet rather than
> >> >> DwrServlet.
> >> >> > Can someone help?
> >> >> >
> >> >> > Thanks in advance.
> >> >> >
> >> >> >
> >> >> >
> >> >>
> >> >> --
> >> >> View this message in context:
> >> >>
> >>
> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
> >> >>  Sent from the DWR - Users mailing list archive at Nabble.com.
> >> >>
> >> >>
> >> >> ---------------------------------------------------------------------
> >> >> To unsubscribe, e-mail: [e-mail]
> >> >> For additional commands, e-mail: [e-mail]
> >> >>
> >> >>
> >> >
> >> >
> >>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26024938.html
> >> Sent from the DWR - Users mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: [e-mail]
> >> For additional commands, e-mail: [e-mail]
> >>
> >>
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26044522.html
> Sent from the DWR - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [e-mail]
> For additional commands, e-mail: [e-mail]
>
>

[Lance Java]

I've raised a bug for this http://bugs.directwebremoting.org/jira/browse/DWR-428

2009/10/26 pinecone_web <brandon.shwu@...>

Ya, that's exactly what I am doing right now to prevent recompiling.

Thank you very much :).

Lance Java wrote:
>
> It seems like StartupUtil.java loads all of the classes in
> defaults.properties an then the overrides are applied which is not ideal.
> As
> a workaround, you might be able to put your own defaults.properties at
> WEB-INF/classes/org/directwebremoting/defaults.properties
>
> The at least you won't need to rebuild the jar... let me know if this
> works.
>
> 2009/10/25 pinecone_web <brandon.shwu@...>
>
>>
>> Hi Lance,
>>
>>  Here it is:
>>
>> java.lang.NoClassDefFoundError: javax.swing.event.EventListenerList is a
>> restricted class. Please see the Google  App Engine developer's guide for
>> more details.
>>     [java]     at
>>
>> com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
>>     [java]     at
>>
>> org.directwebremoting.impl.DefaultScriptSessionManager.<init>(DefaultScriptSessionManager.java:533)
>>     [java]     at
>> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>>     [java]     at
>>
>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>>     [java]     at
>>
>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>>     [java]     at
>> java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>     [java]     at
>>
>> com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:112)
>>     [java]     at
>>
>> com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:132)
>>     [java]     at
>>
>> org.directwebremoting.impl.DefaultContainer.addParameter(DefaultContainer.java:101)
>>     [java]     at
>>
>> org.directwebremoting.spring.SpringContainer.addParameter(SpringContainer.java:68)
>>     [java]     at
>> org.directwebremoting.impl.StartupUtil.setupDefaults(StartupUtil.java:508)
>>     [java]     at
>>
>> org.directwebremoting.impl.StartupUtil.setupDefaultContainer(StartupUtil.java:244)
>>     [java]     at
>>
>> org.directwebremoting.spring.DwrController.afterPropertiesSet(DwrController.java:189)
>>     [java]     at
>>
>> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
>>     [java]     at
>>
>> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
>>     [java]     ... 55 more
>>
>> Please let me know if you have done a fix.
>>
>>
>>
>> Lance Java wrote:
>> >
>> > This sounds like a bug as the DefaultScriptSessionManager class should
>> not
>> > be loaded into memory if you provide your own implementation (unless of
>> > course you have extended this class). Do you have a stack trace?
>> >
>> > 2009/10/23 pinecone_web <brandon.shwu@...>
>> >
>> >>
>> >> Yes, I know. I just don't know how to inject my MyScriptSessionManager
>> (I
>> >> tried
>> >>
>> >> <dwr:controller id="dwrController" debug="true">
>> >>    <dwr:config-param
>> >> name="org.directwebremoting.extend.ScriptSessionManager
>> >> value="foo.bar.MyScriptSessionManager"/>
>> >> </dwr:controller>
>> >>
>> >> )
>> >>
>> >> After looking into the code, I found the cause: Even I provid the
>> >> MyScriptSessionManager as a config parameter of DwrController, the
>> >> DefaultScriptSessionManager will STILL BE INITIATED by the
>> >> DefaultContainer
>> >> since it is specified in "default.properties." I have removed the
>> mapping
>> >> from ScriptSessionManager to DefaultScriptSessionManager from this
>> file
>> >> and
>> >> the error message disappears.
>> >>
>> >> However, this approach requires recompilning. Any other way which does
>> >> not
>> >> require recompiling?
>> >>
>> >>
>> >> Lance Java wrote:
>> >> >
>> >> > unfortunately GAE does not allow
>> javax.swing.event.EventListenerList.
>> >> You
>> >> > will need to implement a script session manager that does not use
>> this
>> >> > class.
>> >> >
>> >> > 2009/10/23 pinecone_web <brandon.shwu@...>
>> >> >
>> >> >>
>> >> >> Hi,
>> >> >>
>> >> >> By the way, I tried in my spring config xml:
>> >> >>
>> >> >> <dwr:controller id="dwrController" debug="true">
>> >> >>                <dwr:config-param
>> >> >> name="org.directwebremoting.extend.ScriptSessionManager"
>> >> >> value="foo.bar.MyScriptSessionManager"/>
>> >> >> </dwr:controller>
>> >> >>
>> >> >> But I still get the error: "java.lang.NoClassDefFoundError:
>> >> >> javax.swing.event.EventListenerList is a restricted class." caused
>> by
>> >> >> DefaultScriptSessionManager.
>> >> >>
>> >> >> What am I doing wrong?
>> >> >>
>> >> >>
>> >> >>
>> >> >> pinecone_web wrote:
>> >> >> >
>> >> >> > Hi,
>> >> >> >
>> >> >> > I am trying to put DWR and Spring together on Google App Engine
>> >> (GAE).
>> >> >> I
>> >> >> > follow the instructions
>> >> >> >
>> >> >>
>> >>
>> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
>> >> >> > that configures a Spring DispatcherServlet and maps all
>> DWR-related
>> >> >> > request to a DwrController. Here is a snippet of my spring config
>> >> xml:
>> >> >> >
>> >> >> > <context:annotation-config />
>> >> >> > <aop:aspectj-autoproxy proxy-target-class="false" />
>> >> >> > <dwr:configuration />
>> >> >> > <dwr:annotation-config />
>> >> >> > <dwr:url-mapping />
>> >> >> > <dwr:controller id="dwrController" debug="true" />
>> >> >> > <context:component-scan base-package="com.my.package.name"
>> >> >> > scoped-proxy="interfaces" />
>> >> >> >
>> >> >> >
>> >> >> > To walk around the thread-creation limitation on GAE, I have
>> >> >> implemented
>> >> >> > my own ScriptSessionManager (following this thread:
>> >> >> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However,
>> I
>> >> >> don't
>> >> >> > know how to inject my own ScriptSessionManager implementation to
>> DWR
>> >> >> > through Spring configuration. In that thread the example
>> >> >> >
>> >> >> > <servlet>
>> >> >> >     <servlet-name>dwr-invoker</servlet-name>
>> >> >> >     <display-name>DWR Servlet</display-name>
>> >> >> >     <description>Direct Web Remoter Servlet</description>
>> >> >> >
>> >> >> >
>> >>
>> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
>> >> >> >     <init-param>
>> >> >> >
>> >> >> >
>> >> >>
>> >>
>> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
>> >> >> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
>> >> >> >     </init-param>
>> >> >> > </servlet>
>> >> >> >
>> >> >> >
>> >> >> > does not work since I use Spring DispatcherServlet rather than
>> >> >> DwrServlet.
>> >> >> > Can someone help?
>> >> >> >
>> >> >> > Thanks in advance.
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >>
>> >> >> --
>> >> >> View this message in context:
>> >> >>
>> >>
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
>> >> >>  Sent from the DWR - Users mailing list archive at Nabble.com.
>> >> >>
>> >> >>
>> >> >>
>> ---------------------------------------------------------------------
>> >> >> To unsubscribe, e-mail: users-unsubscribe@...
>> >> >> For additional commands, e-mail: users-help@...
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >>
>> >> --
>> >> View this message in context:
>> >>
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26024938.html
>> >> Sent from the DWR - Users mailing list archive at Nabble.com.
>> >>
>> >>
>> >> ---------------------------------------------------------------------
>> >> To unsubscribe, e-mail: users-unsubscribe@...
>> >> For additional commands, e-mail: users-help@...
>> >>
>> >>
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26044522.html
>> Sent from the DWR - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@...
>> For additional commands, e-mail: users-help@...
>>
>>
>
>

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[Lance Java]

Please post back with your progress on getting DWR working in GAE as there are other users who will be interested with your experiences. In particular, I am interested in hearing how you handle the following cases:

 

1. Synchronization (adding script sessions to a distributed list). Since each request can be considered to be on a separate JVM, the synchronized keyword may not work as expected, how do handle this? Do you use a bigtable transaction? Do you store the list in bigtable / memcache?

 

2. Threading (such as cleaning up the script sessions). Do you use a cron job or are you making use of the new worker API which is currently only experimental / sandbox?

 

Cheers,

Lance.

 

2009/10/26 Lance Java <lance.java@...>

I've raised a bug for this http://bugs.directwebremoting.org/jira/browse/DWR-428

2009/10/26 pinecone_web <brandon.shwu@...>

Ya, that's exactly what I am doing right now to prevent recompiling.

Thank you very much :).

Lance Java wrote:
>
> It seems like StartupUtil.java loads all of the classes in
> defaults.properties an then the overrides are applied which is not ideal.
> As
> a workaround, you might be able to put your own defaults.properties at
> WEB-INF/classes/org/directwebremoting/defaults.properties
>
> The at least you won't need to rebuild the jar... let me know if this
> works.
>
> 2009/10/25 pinecone_web <brandon.shwu@...>
>
>>
>> Hi Lance,
>>
>>  Here it is:
>>
>> java.lang.NoClassDefFoundError: javax.swing.event.EventListenerList is a
>> restricted class. Please see the Google  App Engine developer's guide for
>> more details.
>>     [java]     at
>>
>> com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
>>     [java]     at
>>
>> org.directwebremoting.impl.DefaultScriptSessionManager.<init>(DefaultScriptSessionManager.java:533)
>>     [java]     at
>> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>>     [java]     at
>>
>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>>     [java]     at
>>
>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>>     [java]     at
>> java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>     [java]     at
>>
>> com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:112)
>>     [java]     at
>>
>> com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:132)
>>     [java]     at
>>
>> org.directwebremoting.impl.DefaultContainer.addParameter(DefaultContainer.java:101)
>>     [java]     at
>>
>> org.directwebremoting.spring.SpringContainer.addParameter(SpringContainer.java:68)
>>     [java]     at
>> org.directwebremoting.impl.StartupUtil.setupDefaults(StartupUtil.java:508)
>>     [java]     at
>>
>> org.directwebremoting.impl.StartupUtil.setupDefaultContainer(StartupUtil.java:244)
>>     [java]     at
>>
>> org.directwebremoting.spring.DwrController.afterPropertiesSet(DwrController.java:189)
>>     [java]     at
>>
>> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
>>     [java]     at
>>
>> org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
>>     [java]     ... 55 more
>>
>> Please let me know if you have done a fix.
>>
>>
>>
>> Lance Java wrote:
>> >
>> > This sounds like a bug as the DefaultScriptSessionManager class should
>> not
>> > be loaded into memory if you provide your own implementation (unless of
>> > course you have extended this class). Do you have a stack trace?
>> >
>> > 2009/10/23 pinecone_web <brandon.shwu@...>
>> >
>> >>
>> >> Yes, I know. I just don't know how to inject my MyScriptSessionManager
>> (I
>> >> tried
>> >>
>> >> <dwr:controller id="dwrController" debug="true">
>> >>    <dwr:config-param
>> >> name="org.directwebremoting.extend.ScriptSessionManager
>> >> value="foo.bar.MyScriptSessionManager"/>
>> >> </dwr:controller>
>> >>
>> >> )
>> >>
>> >> After looking into the code, I found the cause: Even I provid the
>> >> MyScriptSessionManager as a config parameter of DwrController, the
>> >> DefaultScriptSessionManager will STILL BE INITIATED by the
>> >> DefaultContainer
>> >> since it is specified in "default.properties." I have removed the
>> mapping
>> >> from ScriptSessionManager to DefaultScriptSessionManager from this
>> file
>> >> and
>> >> the error message disappears.
>> >>
>> >> However, this approach requires recompilning. Any other way which does
>> >> not
>> >> require recompiling?
>> >>
>> >>
>> >> Lance Java wrote:
>> >> >
>> >> > unfortunately GAE does not allow
>> javax.swing.event.EventListenerList.
>> >> You
>> >> > will need to implement a script session manager that does not use
>> this
>> >> > class.
>> >> >
>> >> > 2009/10/23 pinecone_web <brandon.shwu@...>
>> >> >
>> >> >>
>> >> >> Hi,
>> >> >>
>> >> >> By the way, I tried in my spring config xml:
>> >> >>
>> >> >> <dwr:controller id="dwrController" debug="true">
>> >> >>                <dwr:config-param
>> >> >> name="org.directwebremoting.extend.ScriptSessionManager"
>> >> >> value="foo.bar.MyScriptSessionManager"/>
>> >> >> </dwr:controller>
>> >> >>
>> >> >> But I still get the error: "java.lang.NoClassDefFoundError:
>> >> >> javax.swing.event.EventListenerList is a restricted class." caused
>> by
>> >> >> DefaultScriptSessionManager.
>> >> >>
>> >> >> What am I doing wrong?
>> >> >>
>> >> >>
>> >> >>
>> >> >> pinecone_web wrote:
>> >> >> >
>> >> >> > Hi,
>> >> >> >
>> >> >> > I am trying to put DWR and Spring together on Google App Engine
>> >> (GAE).
>> >> >> I
>> >> >> > follow the instructions
>> >> >> >
>> >> >>
>> >>
>> http://www.codercorp.com/blog/spring/configuring-dwr-30-with-spring-using-annotations.html
>> >> >> > that configures a Spring DispatcherServlet and maps all
>> DWR-related
>> >> >> > request to a DwrController. Here is a snippet of my spring config
>> >> xml:
>> >> >> >
>> >> >> > <context:annotation-config />
>> >> >> > <aop:aspectj-autoproxy proxy-target-class="false" />
>> >> >> > <dwr:configuration />
>> >> >> > <dwr:annotation-config />
>> >> >> > <dwr:url-mapping />
>> >> >> > <dwr:controller id="dwrController" debug="true" />
>> >> >> > <context:component-scan base-package="com.my.package.name"
>> >> >> > scoped-proxy="interfaces" />
>> >> >> >
>> >> >> >
>> >> >> > To walk around the thread-creation limitation on GAE, I have
>> >> >> implemented
>> >> >> > my own ScriptSessionManager (following this thread:
>> >> >> > http://www.nabble.com/DWR3RC1-threads-td23074328.html). However,
>> I
>> >> >> don't
>> >> >> > know how to inject my own ScriptSessionManager implementation to
>> DWR
>> >> >> > through Spring configuration. In that thread the example
>> >> >> >
>> >> >> > <servlet>
>> >> >> >     <servlet-name>dwr-invoker</servlet-name>
>> >> >> >     <display-name>DWR Servlet</display-name>
>> >> >> >     <description>Direct Web Remoter Servlet</description>
>> >> >> >
>> >> >> >
>> >>
>> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
>> >> >> >     <init-param>
>> >> >> >
>> >> >> >
>> >> >>
>> >>
>> <param-name>org.directwebremoting.extend.ScriptSessionManager</param-name>
>> >> >> >         <param-value>foo.bar.MyScriptSessionManager</param-value>
>> >> >> >     </init-param>
>> >> >> > </servlet>
>> >> >> >
>> >> >> >
>> >> >> > does not work since I use Spring DispatcherServlet rather than
>> >> >> DwrServlet.
>> >> >> > Can someone help?
>> >> >> >
>> >> >> > Thanks in advance.
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >>
>> >> >> --
>> >> >> View this message in context:
>> >> >>
>> >>
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26021198.html
>> >> >>  Sent from the DWR - Users mailing list archive at Nabble.com.
>> >> >>
>> >> >>
>> >> >>
>> ---------------------------------------------------------------------
>> >> >> To unsubscribe, e-mail: users-unsubscribe@...
>> >> >> For additional commands, e-mail: users-help@...
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >>
>> >> --
>> >> View this message in context:
>> >>
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26024938.html
>> >> Sent from the DWR - Users mailing list archive at Nabble.com.
>> >>
>> >>
>> >> ---------------------------------------------------------------------
>> >> To unsubscribe, e-mail: users-unsubscribe@...
>> >> For additional commands, e-mail: users-help@...
>> >>
>> >>
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/How-to-inject-my-own-ScriptSessionManager-implementation-in-Spring--tp26019640p26044522.html
>> Sent from the DWR - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@...
>> For additional commands, e-mail: users-help@...
>>
>>
>
>

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