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Posted to user@commons.apache.org by "Rao, Sailesh" <Sa...@53.com> on 2006/10/23 21:38:29 UTC
Betwixt CyclicReferenceException: Bean graph contains a cyclic reference
I get a CyclicReferenceException while using Betwixt to write a bean. We get this exception on our development server - websphere 5.1, JDK 1.4.2.5, AIX 5.2, betwixt 0.7, hibernate 3.1. However the same code worked on my local workstation - webshere 5.1, J2RE 1.4.2 , XP version 5.1, betwixt 0.7, hibernate 3.1. We are using .betwixt files for all bean properties that needs to be written. Any ideas??
Thanks
Sailesh
---------------------------------------------------------------Exception Trace----------------------------------------------------------------------------------------------------------------------
[10/13/06 8:50:17:980 EDT] 5e3e469a AbstractBeanW E org.apache.commons.betwixt.io.AbstractBeanWriter Cyclic reference at bean: XXXXXXXX
[10/13/06 8:50:17:990 EDT] 5e3e469a SystemErr R org.apache.commons.betwixt.io.CyclicReferenceException: Bean graph contains a cyclic reference
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.pushBean(AbstractBeanWriter.java:1014)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:348)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:936)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:955)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:374)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:945)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:374)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:936)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:374)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:243)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.write(AbstractBeanWriter.java:144)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.BeanWriter.write(BeanWriter.java:190)
----------------------------------------------------------Code----------------------------------------------------------------------------------------------------------------------
...
outputWriter.write("<?xml version='1.0' ?>");
BeanWriter beanWriter = new BeanWriter(outputWriter);
IntrospectionConfiguration introConfig = beanWriter.getXMLIntrospector().getConfiguration();
introConfig.setAttributesForPrimitives(false);
introConfig.setMappingDerivationStrategy(MappingDerivationStrategy.USE_INTROSPECTION_TIME_TYPE);
introConfig.setWrapCollectionsInElement(true);
PropertySuppressionStrategy pss = new PropertySuppressionStrategy() {
public boolean suppressProperty(Class clazz, Class type, String name) {
if (clazz == com.xxx.yyy.zzz)
return true;
else
return false;
}
};
introConfig.setPropertySuppressionStrategy(pss);
beanWriter.getBindingConfiguration().setMapIDs(false);
beanWriter.enablePrettyPrint();
beanWriter.write(this);
...
...
------------------------------------------------------------------Server details---------------------------------------------------------------------------------------------------------------------------------------------
WebSphere Platform 5.1 [ND 5.1.1.11 cf110622.05] [JDK 1.4.2.5 pj9ap32142-20060428] [BASE 5.1.1.11 cf110622.05] running with process name SSE01_CELL\SSE01_w93\BRIT_APP_w93 and process id 749774
Host Operating System is AIX, version 5.2
Java version = J2RE 1.4.2 IBM AIX build ca142-20060421 (SR5) (JIT enabled: jitc), Java Compiler = jitc, Java VM name = Classic VM
was.install.root = /usr/WebSphere/SSEServer01
user.install.root = /usr/WebSphere/SSEServer01
Java Home = /usr/WebSphere/SSEServer01/java/jre
ws.ext.dirs = /usr/WebSphere/SSEServer01/java/lib:/usr/WebSphere/SSEServer01/classes:/usr/WebSphere/SSEServer01/classes:/usr/WebSphere/SSEServer01/lib:/usr/WebSphere/SSEServer01/lib/ext:/usr/WebSphere/SSEServer01/web/help:/usr/WebSphere/SSEServer01/deploytool/itp/plugins/com.ibm.etools.ejbdeploy/runtime
Classpath = /usr/WebSphere/SSEServer01/properties:/usr/WebSphere/SSEServer01/properties:/usr/WebSphere/SSEServer01/lib/bootstrap.jar:/usr/WebSphere/SSEServer01/lib/j2ee.jar:/usr/WebSphere/SSEServer01/lib/lmproxy.jar:/usr/WebSphere/SSEServer01/lib/urlprotocols.jar
Java Library path = /usr/WebSphere/SSEServer01/java/jre/bin:/usr/WebSphere/SSEServer01/java/jre/bin/classic:/usr/WebSphere/SSEServer01/java/jre/bin:/usr/WebSphere/SSEServer01/bin:/usr/mqm/java/lib:/usr/opt/wemps/lib:/opt/fitb/db2/db2rtcl/sqllib/lib:/usr/lib
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sailesh Rao
Brokerage IT - 5/3 Bank
MD 1MOB2B
513-358-1599
This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated.
RE: Betwixt CyclicReferenceException: Bean graph contains a cyclicreference
Posted by "Rao, Sailesh" <Sa...@53.com>.
Thanks to all who responded. I finally figured out that the betwixt file for one of the beans was in lower case and not in title case. The bean class was in title case. So the code ran fine on windows but failed on AIX because it could not pick up the .betwixt file. That probably resulted in betwixt trying to introspect the bean and write all of its properties to XML.
Regards
Sailesh
-----Original Message-----
From: robert burrell donkin
[mailto:robertburrelldonkin@blueyonder.co.uk]
Sent: Saturday, October 28, 2006 3:38 PM
To: Jakarta Commons Users List
Subject: RE: Betwixt CyclicReferenceException: Bean graph contains a
cyclicreference
On Tue, 2006-10-24 at 14:11 -0400, Rao, Sailesh wrote:
> In further digging through the trace logs, I find a whole bunch of ClassCastException prior to the CyclicReferenceException.
> Any idea what may be causing the ClassCastExceptions?
could be a classloader issue since betwixt works by reflection
- robert
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RE: Betwixt CyclicReferenceException: Bean graph contains a cyclic
reference
Posted by robert burrell donkin <ro...@blueyonder.co.uk>.
On Tue, 2006-10-24 at 14:11 -0400, Rao, Sailesh wrote:
> In further digging through the trace logs, I find a whole bunch of ClassCastException prior to the CyclicReferenceException.
> Any idea what may be causing the ClassCastExceptions?
could be a classloader issue since betwixt works by reflection
- robert
---------------------------------------------------------------------
To unsubscribe, e-mail: commons-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: commons-user-help@jakarta.apache.org
RE: Betwixt CyclicReferenceException: Bean graph contains a cyclic reference
Posted by "Rao, Sailesh" <Sa...@53.com>.
In further digging through the trace logs, I find a whole bunch of ClassCastException prior to the CyclicReferenceException.
Any idea what may be causing the ClassCastExceptions?
The error seems to be happening only when there is one or more instance of a particular bean within the object graph.
i.e. Person bean is used to generate Person.xml & Person bean has an Address bean as a property. We get the error mainly when there is an address record for a Person.
[10/24/06 12:47:52:027 EDT] 3a828432 AbstractBeanW E org.apache.commons.betwixt.io.AbstractBeanWriter [MethodExpression] Cannot evaluate expression
[10/24/06 12:47:52:027 EDT] d138432 ORBRas d com.ibm.rmi.iiop.CDROutputStream setStreamFormatVersion:387 Alarm : 1 custom stream format=1
[10/24/06 12:47:52:046 EDT] 3a828432 AbstractBeanW E org.apache.commons.betwixt.io.AbstractBeanWriter TRAS0014I: The following exception was logged java.lang.IllegalArgumentException: java.lang.ClassCastException@1eb2442e
at sun.reflect.GeneratedMethodAccessor464.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at org.apache.commons.betwixt.expression.MethodExpression.evaluate(MethodExpression.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java(Inlined Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java(Compiled Code))
...
at org.apache.commons.betwixt.io.AbstractBeanWriter.write(AbstractBeanWriter.java:144)
at org.apache.commons.betwixt.io.BeanWriter.write(BeanWriter.java:190)
.
java.lang.IllegalArgumentException: java.lang.ClassCastException@1eb2442e
at sun.reflect.GeneratedMethodAccessor464.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at org.apache.commons.betwixt.expression.MethodExpression.evaluate(MethodExpression.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java(Inlined Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java(Compiled Code))
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java(Compiled Code))
...
at org.apache.commons.betwixt.io.AbstractBeanWriter.write(AbstractBeanWriter.java:144)
at org.apache.commons.betwixt.io.BeanWriter.write(BeanWriter.java:190)
-----Original Message-----
From: Rao, Sailesh [mailto:Sailesh.Rao@53.com]
Sent: Monday, October 23, 2006 3:38 PM
To: commons-user@jakarta.apache.org
Subject: Betwixt CyclicReferenceException: Bean graph contains a cyclic
reference
I get a CyclicReferenceException while using Betwixt to write a bean. We get this exception on our development server - websphere 5.1, JDK 1.4.2.5, AIX 5.2, betwixt 0.7, hibernate 3.1. However the same code worked on my local workstation - webshere 5.1, J2RE 1.4.2 , XP version 5.1, betwixt 0.7, hibernate 3.1. We are using .betwixt files for all bean properties that needs to be written. Any ideas??
Thanks
Sailesh
---------------------------------------------------------------Exception Trace----------------------------------------------------------------------------------------------------------------------
[10/13/06 8:50:17:980 EDT] 5e3e469a AbstractBeanW E org.apache.commons.betwixt.io.AbstractBeanWriter Cyclic reference at bean: XXXXXXXX
[10/13/06 8:50:17:990 EDT] 5e3e469a SystemErr R org.apache.commons.betwixt.io.CyclicReferenceException: Bean graph contains a cyclic reference
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.pushBean(AbstractBeanWriter.java:1014)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:348)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:936)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:955)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:991 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:374)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:945)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:374)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:936)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:738)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:374)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:243)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.AbstractBeanWriter.write(AbstractBeanWriter.java:144)
[10/13/06 8:50:17:992 EDT] 5e3e469a SystemErr R at org.apache.commons.betwixt.io.BeanWriter.write(BeanWriter.java:190)
----------------------------------------------------------Code----------------------------------------------------------------------------------------------------------------------
...
outputWriter.write("<?xml version='1.0' ?>");
BeanWriter beanWriter = new BeanWriter(outputWriter);
IntrospectionConfiguration introConfig = beanWriter.getXMLIntrospector().getConfiguration();
introConfig.setAttributesForPrimitives(false);
introConfig.setMappingDerivationStrategy(MappingDerivationStrategy.USE_INTROSPECTION_TIME_TYPE);
introConfig.setWrapCollectionsInElement(true);
PropertySuppressionStrategy pss = new PropertySuppressionStrategy() {
public boolean suppressProperty(Class clazz, Class type, String name) {
if (clazz == com.xxx.yyy.zzz)
return true;
else
return false;
}
};
introConfig.setPropertySuppressionStrategy(pss);
beanWriter.getBindingConfiguration().setMapIDs(false);
beanWriter.enablePrettyPrint();
beanWriter.write(this);
...
...
------------------------------------------------------------------Server details---------------------------------------------------------------------------------------------------------------------------------------------
WebSphere Platform 5.1 [ND 5.1.1.11 cf110622.05] [JDK 1.4.2.5 pj9ap32142-20060428] [BASE 5.1.1.11 cf110622.05] running with process name SSE01_CELL\SSE01_w93\BRIT_APP_w93 and process id 749774
Host Operating System is AIX, version 5.2
Java version = J2RE 1.4.2 IBM AIX build ca142-20060421 (SR5) (JIT enabled: jitc), Java Compiler = jitc, Java VM name = Classic VM
was.install.root = /usr/WebSphere/SSEServer01
user.install.root = /usr/WebSphere/SSEServer01
Java Home = /usr/WebSphere/SSEServer01/java/jre
ws.ext.dirs = /usr/WebSphere/SSEServer01/java/lib:/usr/WebSphere/SSEServer01/classes:/usr/WebSphere/SSEServer01/classes:/usr/WebSphere/SSEServer01/lib:/usr/WebSphere/SSEServer01/lib/ext:/usr/WebSphere/SSEServer01/web/help:/usr/WebSphere/SSEServer01/deploytool/itp/plugins/com.ibm.etools.ejbdeploy/runtime
Classpath = /usr/WebSphere/SSEServer01/properties:/usr/WebSphere/SSEServer01/properties:/usr/WebSphere/SSEServer01/lib/bootstrap.jar:/usr/WebSphere/SSEServer01/lib/j2ee.jar:/usr/WebSphere/SSEServer01/lib/lmproxy.jar:/usr/WebSphere/SSEServer01/lib/urlprotocols.jar
Java Library path = /usr/WebSphere/SSEServer01/java/jre/bin:/usr/WebSphere/SSEServer01/java/jre/bin/classic:/usr/WebSphere/SSEServer01/java/jre/bin:/usr/WebSphere/SSEServer01/bin:/usr/mqm/java/lib:/usr/opt/wemps/lib:/opt/fitb/db2/db2rtcl/sqllib/lib:/usr/lib
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated.
This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated.
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