Custom component

CloverDX Platform
1

I tried to modify the pre-built project http://www.cloveretl.com/blog/wp-conten … mplate.zip, simply changing the message in output but I have the error:

INFO [main] - *** CloverETL framework/transformation graph, (c) 2002-2014 Javlin a.s. ***
INFO [main] - Running with CloverETL library version 3.5.0 build#058 compiled 03/02/2014 14:20:28
INFO [main] - Running on 4 CPU(s), OS Windows 7, architecture amd64, Java version 1.7.0_11, max available memory for JVM 857472 KB
INFO [main] - Loading default properties from: defaultProperties
INFO [main] - Graph definition file: graph/testHelloWorld.grf
ERROR [main] - Error in reading graph from XML !
Unknown component: HELLO_WORLD class: HELLO_WORLD
ERROR [main] - Error details:
org.jetel.exception.XMLConfigurationException
at org.jetel.graph.TransformationGraphXMLReaderWriter.throwXMLConfigurationException(TransformationGraphXMLReaderWriter.java:1117)
at org.jetel.graph.TransformationGraphXMLReaderWriter.instantiatePhases(TransformationGraphXMLReaderWriter.java:533)
at org.jetel.graph.TransformationGraphXMLReaderWriter.read(TransformationGraphXMLReaderWriter.java:417)
at org.jetel.graph.TransformationGraphXMLReaderWriter.read(TransformationGraphXMLReaderWriter.java:317)
at org.jetel.graph.TransformationGraphXMLReaderWriter.loadGraph(TransformationGraphXMLReaderWriter.java:247)
at org.jetel.main.runGraph.main(runGraph.java:402)
Caused by: org.jetel.exception.XMLConfigurationException
at org.jetel.graph.TransformationGraphXMLReaderWriter.throwXMLConfigurationException(TransformationGraphXMLReaderWriter.java:1117)
at org.jetel.graph.TransformationGraphXMLReaderWriter.throwXMLConfigurationException(TransformationGraphXMLReaderWriter.java:1112)
at org.jetel.graph.TransformationGraphXMLReaderWriter.instantiateNodes(TransformationGraphXMLReaderWriter.java:586)
at org.jetel.graph.TransformationGraphXMLReaderWriter.instantiatePhases(TransformationGraphXMLReaderWriter.java:527)
… 4 more
Caused by: java.lang.RuntimeException: Unknown component: HELLO_WORLD class: HELLO_WORLD
at org.jetel.component.ComponentFactory.getComponentClass(ComponentFactory.java:111)
at org.jetel.component.ComponentFactory.createComponent(ComponentFactory.java:128)
at org.jetel.graph.TransformationGraphXMLReaderWriter.instantiateNodes(TransformationGraphXMLReaderWriter.java:571)
… 5 more
Caused by: java.lang.ClassNotFoundException: HELLO_WORLD
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at org.jetel.component.ComponentFactory.getComponentClass(ComponentFactory.java:101)
… 7 more

ERROR [main] -
--------------------------------- Error details ----------------------------------
Error in reading graph from XML !
Unknown component: HELLO_WORLD class: HELLO_WORLD
----------------------------------------------------------------------------------

Can you help me?
Thanks
Sara

2

Hello,

There is a section called “If you want to make changes…” in the blog article. When you have made some changes in your custom component, please follow these instructions.

If you want to make changes…

- If you want to change the component behavior, edit HelloWorldComponent.java.
Remember, in this case you will need to perform steps 17 through 21

- Component descriptor for Engine: com.cloveretl.customcomponent\plugin.xml.
Remember, if you change this file you will need to perform steps 17 through 21

- Component descriptor for Designer: com.cloveretl.designer.customcomponent\customcomponent.xml.
Remember, if you change only this file you will just need to perform step 21