[mule-user] Rules in mule

Anish P. Issac

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Jun 6, 2007, 8:09:26 AM6/6/07

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Hi,

How can we possible to create rules in Mule. Currently I am using Mule 1.3.3 and is any need to upgrade to 1.4?.

Thanks and Regards,

Anish P Isaac

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Andrew Perepelytsya

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Jun 6, 2007, 9:32:59 AM6/6/07

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Anish,

Can you be more specific in your requirements? Also have a look at http://prova.ws/csp/?q=taxonomy/term/7

Andrew

Anish P. Issac

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Jun 6, 2007, 10:03:47 AM6/6/07

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Hi Andrew,

Thank you for quick your response.

I am totally new to Mule. But I have already gone through the examples provided by mule.

Our requirement is to implement some business logic in mule. Suppose I need to convert one xml file to some other format. So where I can implement my business logic in mule?.

Also could u please please tell me “vm://component” endpoints and here what is mean by “component”.

Thanks and Regards,

Anish.

Andrew Perepelytsya

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Jun 6, 2007, 10:36:10 AM6/6/07

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The component is a plain Java class with your business logic. This is also the location you should implement your logic in. It really has nothing Mule-specific.

Anish P. Issac

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Jun 6, 2007, 11:31:20 AM6/6/07

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Hi Andrew,

Yes you r right. But we are going to implement the ESB system in our existing application and we are planning to use Mule as the ESB.

In mule I want to parse one xml file to an object and I tried with the following configuration file. But it is showing the following exception.

INFO 2007-06-06 18:03:12,779 [main] org.mule.MuleServer: Mule Server initialized.

ERROR 2007-06-06 18:04:02,966 [xmlParser.2] org.mule.impl.DefaultComponentExceptionStrategy: Caught exception in Exception Strategy for: xmlParser: org.mule.umo.ComponentException: Failed to invoke xml.parse.XmlConvertor. Component that caused exception is: xmlParser. Message payload is of type: [B

org.mule.umo.ComponentException: Failed to invoke xml.parse.XmlConvertor. Component that caused exception is: xmlParser. Message payload is of type: [B

at org.mule.impl.DefaultLifecycleAdapter.intercept(DefaultLifecycleAdapter.java:207)

at org.mule.impl.InterceptorsInvoker.execute(InterceptorsInvoker.java:47)

at org.mule.impl.model.DefaultMuleProxy.run(DefaultMuleProxy.java:475)

at org.mule.impl.work.WorkerContext.run(WorkerContext.java:310)

at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987)

at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528)

at java.lang.Thread.run(Unknown Source)

Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: note : note

at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:49)

at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)

at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:72)

at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)

at com.thoughtworks.xstream.mapper.CGLIBMapper.realClass(CGLIBMapper.java:40)

My configuration xml file is

<mule-configuration id="RouterSelection-config" version="1.0">

Configuration for the the "RouterSelection" project

</description>

</transformer>

</transformers>

<mule-descriptor name="xmlParser" implementation="xml.parse.XmlConvertor">

<inbound-router>

</endpoint>

</inbound-router>

</mule-descriptor>

</model>

</mule-configuration>

Thanks

Anish

Andrew Perepelytsya

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Jun 6, 2007, 11:42:50 AM6/6/07

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What Mule version are you using? My impression was the error messages have been improved post 1.4 for things like:

Message payload is of type: [B

It really means you are missing an extra transformation step, as the incoming message is a byte array. ObjectToXml transformer cannot find a conversion for it. Depending on your config, you may need to add, e.g. ByteArrayToSerializable transformer before xml conversion.

Andrew

On 6/6/07, Anish P. Issac < AIs...@path-solutions.com> wrote:

Hi Andrew,

Yes you r right. But we are going to implement the ESB system in our existing application and we are planning to use Mule as the ESB.

In mule I want to parse one xml file to an object and I tried with the following configuration file. But it is showing the following exception.

INFO 2007-06-06 18:03:12,779 [main] org.mule.MuleServer: Mule Server initialized.

ERROR 2007-06-06 18:04:02,966 [xmlParser.2] org.mule.impl.DefaultComponentExceptionStrategy: Caught exception in Exception Strategy for: xmlParser: org.mule.umo.ComponentException : Failed to invoke xml.parse.XmlConvertor. Component that caused exception is: xmlParser. Message payload is of type: [B

org.mule.umo.ComponentException : Failed to invoke xml.parse.XmlConvertor. Component that caused exception is: xmlParser. Message payload is of type: [B

      at org.mule.impl.DefaultLifecycleAdapter.intercept(DefaultLifecycleAdapter.java:207 )

      at org.mule.impl.InterceptorsInvoker.execute(InterceptorsInvoker.java:47 )

      at org.mule.impl.model.DefaultMuleProxy.run(DefaultMuleProxy.java:475 )

      at org.mule.impl.work.WorkerContext.run(WorkerContext.java:310 )

      at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987 )

      at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528 )

      at java.lang.Thread.run(Unknown Source)

Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: note : note

      at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:49 )

      at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26 )

      at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:72 )

      at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26 )

      at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26 )

      at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26 )

      at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26 )

      at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26 )

      at com.thoughtworks.xstream.mapper.CGLIBMapper.realClass(CGLIBMapper.java:40 )

My configuration xml file is

< mule-configuration id ="RouterSelection-config" version= "1.0">

      < description >

            Configuration for the the "RouterSelection" project

      </ description >

< connector name= "TcpNormalConnector" className ="org.mule.providers.tcp.TcpConnector" ></connector >

      < transformers >

      < transformer name= "XmlToObject" className ="org.mule.transformers.xml.XmlToObject" returnClass= "java.lang.Object">

      </ transformer >

      </ transformers >

      < model name= "RouterSelection">

            <mule-descriptor name= "xmlParser" implementation ="xml.parse.XmlConvertor" >

            <inbound-router >

            <endpoint address= "tcp://localhost:2000" transformers ="XmlToObject" connector= "TcpNormalConnector">

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