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Creating a UDO Manually

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Creating a UDO Manually

To create a UDO manually, follow the steps:

  1. Inherit from the class JROblectTemplate to create a template file.
  2. Inherit from the class JRVisiableResult or JRObjectResult to create a result file.
  3. Implement JRObjectResultCreator to create a result creator file.
  4. Implement interface JRObjectRender to create a result render file. If you want to display a UDO in the Design area, implement interface JRObjectEditor. If your UDO is a group level object, implement interface JRGroupListener.
  5. Modify the file udo.ini in <install_root>\lib by adding the following: 
    Begin 
name=MyDbField
template=myudo.MyDbFld
resultobject=myudo.MyDbFldRst
resultcreator=myudo.MyDbFldCreator
resultviewer=myudo.MyDbFldRender
End
  6. Compile the Java files, add the classes to the ADDCLASSPATH variable of setenv.bat in <install_root>\bin.

    Note: If you want to use class files for the UDO which have been used in previous versions, you should re-compile the source files.

Following are two specific examples about creating UDOs:

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