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Posted to users@wicket.apache.org by Xavier Hanin <xa...@gmail.com> on 2007/09/24 10:53:58 UTC
strange ClassCastException when deserializing a Page
Hi,
I have a strange CCE on page deserialization with wicket 1.3.0-beta3:
java.lang.ClassCastException: cannot assign instance of
org.apache.wicket.model.PropertyModel to field
org.apache.wicket.markup.html.WebMarkupContainerWithAssociatedMarkup.markupHelperof
type
org.apache.wicket.markup.html.ContainerWithAssociatedMarkupHelper in
instance of org.xoocode.xooctory.web.component.form.LabelBorder
at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(
ObjectStreamClass.java:2032)
at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java
:1212)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
:1951)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
:1869)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
:1945)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
:1869)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
:1945)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
:1869)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
:1945)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
:1869)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java
:396)
at
org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage(
AbstractPageStore.java:231)
at org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(
DiskPageStore.java:596)
at
org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.get
(SecondLevelCacheSessionStore.java:322)
at org.apache.wicket.Session.getPage(Session.java:800)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage(
AbstractRequestCycleProcessor.java:427)
at org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(
WebRequestCycleProcessor.java:139)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1091)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1177)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java
:261)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(
WicketFilter.java:127)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(
ServletHandler.java:1065)
at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal
(OpenSessionInViewFilter.java:198)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(
OncePerRequestFilter.java:75)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(
ServletHandler.java:1065)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java
:365)
at org.mortbay.jetty.security.SecurityHandler.handle(
SecurityHandler.java:185)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java
:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java
:689)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java
:391)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java
:139)
at org.mortbay.jetty.Server.handle(Server.java:285)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java
:457)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(
HttpConnection.java:751)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:500)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
at org.mortbay.io.nio.SelectChannelEndPoint.run(
SelectChannelEndPoint.java:329)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(
BoundedThreadPool.java:475)
The component on which I have the problem, LabelBorder, is a very simple
Border component:
public class LabelBorder extends Border {
private static final long serialVersionUID = 1L;
public LabelBorder(String id, IModel model, String label,
String htmlTip) {
super(id, model);
add(new Label("label", label));
if (htmlTip != null) {
add(new ToolTipComponent("help", htmlTip));
} else {
add(new WebMarkupContainer("help"));
}
}
public LabelBorder(String id, String label,
String htmlTip) {
this(id, null, label, htmlTip);
}
}
So I'm wondering what can be going wrong. Any idea?
Xavier
--
Xavier Hanin - Independent Java Consultant
http://xhab.blogspot.com/
http://incubator.apache.org/ivy/
http://www.xoocode.org/
Re: strange ClassCastException when deserializing a Page
Posted by Xavier Hanin <xa...@gmail.com>.
On 9/25/07, Eelco Hillenius <ee...@gmail.com> wrote:
>
> On 9/24/07, Xavier Hanin <xa...@gmail.com> wrote:
> > On 9/25/07, Eelco Hillenius <ee...@gmail.com> wrote:
> > >
> > > Gee that looks weird. As far as I know, the only exotic stuff we do
> > > with serializing is an optimization for page references. But I can't
> > > see how that might relate to this.
> > >
> > > Johan, any ideas? Any chance you could make a test case out of it
> Xavier?
> >
> >
> > The problem is that without the slightest idea of where it comes from
> it's
> > difficult to make a test case. The code is public though, so I have a
> "large
> > test case" :-)
> > But I'm ok to investigate on my own, if you can give me some hints...
> Maybe
> > I can switch to another serialization implementation, if I remember well
> > that's something possible, no?
>
> You could try that (Objects#setObjectStreamFactory(new
> WicketObjectStreamFactory()) but since we are now using Java's default
> serialization, I doubt that would make things better.
Indeed, it only failed earlier. But never mind, I've finally found the
problem, it was only my fault, bad serialization overriding lost in another
component...
Xavier
Eelco
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
--
Xavier Hanin - Independent Java Consultant
http://xhab.blogspot.com/
http://incubator.apache.org/ivy/
http://www.xoocode.org/
Re: strange ClassCastException when deserializing a Page
Posted by Eelco Hillenius <ee...@gmail.com>.
On 9/24/07, Xavier Hanin <xa...@gmail.com> wrote:
> On 9/25/07, Eelco Hillenius <ee...@gmail.com> wrote:
> >
> > Gee that looks weird. As far as I know, the only exotic stuff we do
> > with serializing is an optimization for page references. But I can't
> > see how that might relate to this.
> >
> > Johan, any ideas? Any chance you could make a test case out of it Xavier?
>
>
> The problem is that without the slightest idea of where it comes from it's
> difficult to make a test case. The code is public though, so I have a "large
> test case" :-)
> But I'm ok to investigate on my own, if you can give me some hints... Maybe
> I can switch to another serialization implementation, if I remember well
> that's something possible, no?
You could try that (Objects#setObjectStreamFactory(new
WicketObjectStreamFactory()) but since we are now using Java's default
serialization, I doubt that would make things better.
Eelco
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
For additional commands, e-mail: users-help@wicket.apache.org
Re: strange ClassCastException when deserializing a Page
Posted by Xavier Hanin <xa...@gmail.com>.
On 9/25/07, Eelco Hillenius <ee...@gmail.com> wrote:
>
> Gee that looks weird. As far as I know, the only exotic stuff we do
> with serializing is an optimization for page references. But I can't
> see how that might relate to this.
>
> Johan, any ideas? Any chance you could make a test case out of it Xavier?
The problem is that without the slightest idea of where it comes from it's
difficult to make a test case. The code is public though, so I have a "large
test case" :-)
But I'm ok to investigate on my own, if you can give me some hints... Maybe
I can switch to another serialization implementation, if I remember well
that's something possible, no?
Xavier
Eelco
>
> On 9/24/07, Xavier Hanin <xa...@gmail.com> wrote:
> > Hi,
> >
> > I have a strange CCE on page deserialization with wicket 1.3.0-beta3:
> > java.lang.ClassCastException: cannot assign instance of
> > org.apache.wicket.model.PropertyModel to field
> >
> org.apache.wicket.markup.html.WebMarkupContainerWithAssociatedMarkup.markupHelperof
> > type
> > org.apache.wicket.markup.html.ContainerWithAssociatedMarkupHelper in
> > instance of org.xoocode.xooctory.web.component.form.LabelBorder
> > at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(
> > ObjectStreamClass.java:2032)
> > at java.io.ObjectStreamClass.setObjFieldValues(
> ObjectStreamClass.java
> > :1212)
> > at java.io.ObjectInputStream.defaultReadFields(
> ObjectInputStream.java
> > :1951)
> > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> > :1869)
> > at java.io.ObjectInputStream.readOrdinaryObject(
> ObjectInputStream.java
> > :1753)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1329)
> > at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1323)
> > at java.io.ObjectInputStream.defaultReadFields(
> ObjectInputStream.java
> > :1945)
> > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> > :1869)
> > at java.io.ObjectInputStream.readOrdinaryObject(
> ObjectInputStream.java
> > :1753)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1329)
> > at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1323)
> > at java.io.ObjectInputStream.defaultReadFields(
> ObjectInputStream.java
> > :1945)
> > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> > :1869)
> > at java.io.ObjectInputStream.readOrdinaryObject(
> ObjectInputStream.java
> > :1753)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1329)
> > at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1323)
> > at java.io.ObjectInputStream.defaultReadFields(
> ObjectInputStream.java
> > :1945)
> > at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> > :1869)
> > at java.io.ObjectInputStream.readOrdinaryObject(
> ObjectInputStream.java
> > :1753)
> > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
> :1329)
> > at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
> > at org.apache.wicket.util.lang.Objects.byteArrayToObject(
> Objects.java
> > :396)
> > at
> >
> org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage
> (
> > AbstractPageStore.java:231)
> > at org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(
> > DiskPageStore.java:596)
> > at
> >
> org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.get
> > (SecondLevelCacheSessionStore.java:322)
> > at org.apache.wicket.Session.getPage(Session.java:800)
> > at
> >
> org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage
> (
> > AbstractRequestCycleProcessor.java:427)
> > at org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve
> (
> > WebRequestCycleProcessor.java:139)
> > at org.apache.wicket.RequestCycle.step(RequestCycle.java:1091)
> > at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1177)
> > at org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
> > at org.apache.wicket.protocol.http.WicketFilter.doGet(
> WicketFilter.java
> > :261)
> > at org.apache.wicket.protocol.http.WicketFilter.doFilter(
> > WicketFilter.java:127)
> > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(
> > ServletHandler.java:1065)
> > at
> >
> org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal
> > (OpenSessionInViewFilter.java:198)
> > at org.springframework.web.filter.OncePerRequestFilter.doFilter(
> > OncePerRequestFilter.java:75)
> > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(
> > ServletHandler.java:1065)
> > at org.mortbay.jetty.servlet.ServletHandler.handle(
> ServletHandler.java
> > :365)
> > at org.mortbay.jetty.security.SecurityHandler.handle(
> > SecurityHandler.java:185)
> > at org.mortbay.jetty.servlet.SessionHandler.handle(
> SessionHandler.java
> > :181)
> > at org.mortbay.jetty.handler.ContextHandler.handle(
> ContextHandler.java
> > :689)
> > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java
> > :391)
> > at org.mortbay.jetty.handler.HandlerWrapper.handle(
> HandlerWrapper.java
> > :139)
> > at org.mortbay.jetty.Server.handle(Server.java:285)
> > at org.mortbay.jetty.HttpConnection.handleRequest(
> HttpConnection.java
> > :457)
> > at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(
> > HttpConnection.java:751)
> > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:500)
> > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
> > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
> > at org.mortbay.io.nio.SelectChannelEndPoint.run(
> > SelectChannelEndPoint.java:329)
> > at org.mortbay.thread.BoundedThreadPool$PoolThread.run(
> > BoundedThreadPool.java:475)
> >
> >
> > The component on which I have the problem, LabelBorder, is a very simple
> > Border component:
> > public class LabelBorder extends Border {
> > private static final long serialVersionUID = 1L;
> >
> > public LabelBorder(String id, IModel model, String label,
> > String htmlTip) {
> > super(id, model);
> > add(new Label("label", label));
> > if (htmlTip != null) {
> > add(new ToolTipComponent("help", htmlTip));
> > } else {
> > add(new WebMarkupContainer("help"));
> > }
> > }
> >
> > public LabelBorder(String id, String label,
> > String htmlTip) {
> > this(id, null, label, htmlTip);
> > }
> >
> > }
> >
> >
> > So I'm wondering what can be going wrong. Any idea?
> >
> > Xavier
> >
> >
> >
> > --
> > Xavier Hanin - Independent Java Consultant
> > http://xhab.blogspot.com/
> > http://incubator.apache.org/ivy/
> > http://www.xoocode.org/
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
--
Xavier Hanin - Independent Java Consultant
http://xhab.blogspot.com/
http://incubator.apache.org/ivy/
http://www.xoocode.org/
Re: strange ClassCastException when deserializing a Page
Posted by Eelco Hillenius <ee...@gmail.com>.
Gee that looks weird. As far as I know, the only exotic stuff we do
with serializing is an optimization for page references. But I can't
see how that might relate to this.
Johan, any ideas? Any chance you could make a test case out of it Xavier?
Eelco
On 9/24/07, Xavier Hanin <xa...@gmail.com> wrote:
> Hi,
>
> I have a strange CCE on page deserialization with wicket 1.3.0-beta3:
> java.lang.ClassCastException: cannot assign instance of
> org.apache.wicket.model.PropertyModel to field
> org.apache.wicket.markup.html.WebMarkupContainerWithAssociatedMarkup.markupHelperof
> type
> org.apache.wicket.markup.html.ContainerWithAssociatedMarkupHelper in
> instance of org.xoocode.xooctory.web.component.form.LabelBorder
> at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(
> ObjectStreamClass.java:2032)
> at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java
> :1212)
> at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
> :1951)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> :1869)
> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
> :1753)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
> at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
> at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
> :1945)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> :1869)
> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
> :1753)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
> at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
> at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
> :1945)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> :1869)
> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
> :1753)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
> at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323)
> at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java
> :1945)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java
> :1869)
> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
> :1753)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
> at org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java
> :396)
> at
> org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage(
> AbstractPageStore.java:231)
> at org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(
> DiskPageStore.java:596)
> at
> org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.get
> (SecondLevelCacheSessionStore.java:322)
> at org.apache.wicket.Session.getPage(Session.java:800)
> at
> org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage(
> AbstractRequestCycleProcessor.java:427)
> at org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(
> WebRequestCycleProcessor.java:139)
> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1091)
> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1177)
> at org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
> at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java
> :261)
> at org.apache.wicket.protocol.http.WicketFilter.doFilter(
> WicketFilter.java:127)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(
> ServletHandler.java:1065)
> at
> org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal
> (OpenSessionInViewFilter.java:198)
> at org.springframework.web.filter.OncePerRequestFilter.doFilter(
> OncePerRequestFilter.java:75)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(
> ServletHandler.java:1065)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java
> :365)
> at org.mortbay.jetty.security.SecurityHandler.handle(
> SecurityHandler.java:185)
> at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java
> :181)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java
> :689)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java
> :391)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java
> :139)
> at org.mortbay.jetty.Server.handle(Server.java:285)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java
> :457)
> at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(
> HttpConnection.java:751)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:500)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
> at org.mortbay.io.nio.SelectChannelEndPoint.run(
> SelectChannelEndPoint.java:329)
> at org.mortbay.thread.BoundedThreadPool$PoolThread.run(
> BoundedThreadPool.java:475)
>
>
> The component on which I have the problem, LabelBorder, is a very simple
> Border component:
> public class LabelBorder extends Border {
> private static final long serialVersionUID = 1L;
>
> public LabelBorder(String id, IModel model, String label,
> String htmlTip) {
> super(id, model);
> add(new Label("label", label));
> if (htmlTip != null) {
> add(new ToolTipComponent("help", htmlTip));
> } else {
> add(new WebMarkupContainer("help"));
> }
> }
>
> public LabelBorder(String id, String label,
> String htmlTip) {
> this(id, null, label, htmlTip);
> }
>
> }
>
>
> So I'm wondering what can be going wrong. Any idea?
>
> Xavier
>
>
>
> --
> Xavier Hanin - Independent Java Consultant
> http://xhab.blogspot.com/
> http://incubator.apache.org/ivy/
> http://www.xoocode.org/
>
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