error using Java

oldforum

• July 16, 2007 00:00

• Answered

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i am trying to use the code example given on page 35 of CloverETL overview part I but i keep getting an error when i try to get the metadata from a file. the file contains the following:

<?xml version="1.0" encoding="UTF-8"?>
<Record name="Spriden_data" type="delimited">
<Field name="PIDM" type="numeric" delimiter=";" format="#"/>
</Record>

i get the following error:

Exception in thread "main" java.lang.NullPointerException
at java.util.regex.Pattern.<init>(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at org.jetel.util.PropertyRefResolver.<init>(PropertyRefResolver.java:81)
at org.jetel.metadata.DataRecordMetadataXMLReaderWriter.<init>(DataRecordMetadataXMLReaderWriter.java:186)
at org.jetel.metadata.DataRecordMetadataXMLReaderWriter.<init>(DataRecordMetadataXMLReaderWriter.java:178)
at org.jetel.metadata.MetadataFactory.fromFile(MetadataFactory.java:64)
at domain.Sample.createGraph(Sample.java:49)
at domain.Sample.main(Sample.java:80)


also most of the documentation is focus around using the graphs in xml, could someone provide a basic example using just java.

Thanks

• 

  oldforum

  • July 16, 2007 08:23

  0

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  Hello !
  It seems that the "overview" document is a bit obsolete.
  I assume you have put together a piece of Java and tried to load metadata from file.
  
  Starting with clover version 1.7 you must first call
  
  Defaults.init(); to initialize default options
  
  With clover 2.0 you have to also call:
  
  Plugins.init(pluginsRootDirectory);
  
  See org.jetel.main.runGraph() method. Also, Examples package should contain subdirectory "javaExamples" where you can look at "testGraphSort.java" which shows how to assemble graph purely in Java.
  
  David.

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