XDocReport converting ODT to PDF with OSGI

Question

To start to work with XDocReport I want to convert ODT to PDF.

All my application is OSGi. So I install the following bundles:

fr.opensagres.xdocreport.converter-1.0.5.jar
fr.opensagres.xdocreport.core-1.0.5.jar
fr.opensagres.xdocreport.document-1.0.5.jar
fr.opensagres.xdocreport.itext.extension-1.0.5.jar
fr.opensagres.xdocreport.template-1.0.5.jar

Besides in class path I have itext-4.2.1.jar (it is not OSGi bundle) and I export the following packages:

  <package name="com.lowagie.text"/>
  <package name="com.lowagie.text.factories"/>
  <package name="com.lowagie.text.pdf"/>
  <package name="com.lowagie.text.pdf.draw"/>

However, I don't get converter using the following code:

Options options = Options.getFrom(DocumentKind.ODT).to(ConverterTypeTo.PDF);
IConverter converter = ConverterRegistry.getRegistry().getConverter(options);
in = new FileInputStream(new File("/Temp/Test1.odt"));
OutputStream out = new FileOutputStream(new File("/Temp/Test1.pdf"));
converter.convert(in, out, options); //HERE I GET NullPointerException - converter is null.

Trying to solve this problem I added the following bundles:

org.odftoolkit.odfdom.converter.core-1.0.5.jar
org.odftoolkit.odfdom.converter.pdf-1.0.5.jar

However, I get:

org.osgi.framework.BundleException: Unresolved constraint in bundle org.odftoolkit.odfdom.converter.core [43]: Unable to resolve 43.0: missing requirement [43.0] osgi.wiring.package; (osgi.wiring.package=org.odftoolkit.odfdom.dom)

To solve problem with org.odftoolkit.odfdom.dom I added odfdom-java-0.8.7.jar to classpath (it is also not OSGi) and export the following package:

   <package name="org.odftoolkit.odfdom.doc"/>
   <package name="org.odftoolkit.odfdom.dom"/>
   <package name="org.odftoolkit.odfdom.dom.element.draw"/>
   <package name="org.odftoolkit.odfdom.dom.element.office"/>
   <package name="org.odftoolkit.odfdom.dom.element.style"/>
   <package name="org.odftoolkit.odfdom.dom.element.table"/>
   <package name="org.odftoolkit.odfdom.dom.style"/>
   <package name="org.odftoolkit.odfdom.incubator.doc.office"/>
   <package name="org.odftoolkit.odfdom.incubator.doc.style"/>
   <package name="org.odftoolkit.odfdom.pkg"/>
   <package name="org.odftoolkit.odfdom.dom.attribute.fo"/>
   <package name="org.odftoolkit.odfdom.dom.attribute.style"/>
   <package name="org.odftoolkit.odfdom.dom.attribute.table"/>
   <package name="org.odftoolkit.odfdom.dom.element"/>
   <package name="org.odftoolkit.odfdom.dom.element.svg"/>
   <package name="org.odftoolkit.odfdom.dom.element.text"/>

However it didn't help and I still get NullPointerException.

These are my questions:

1. What is the reason I get null converter and how to fix it?
2. What library does XDocReport use itext or odfdom for converting?

Answer 1

What I usually do is to take the library, that wasn't an OSGi bundle, and wrapped it. A good tutorial on how to do this in eclipse is Lars Vogel's tutorial: How to create Eclipse plugins from jars.

Than export the project as a jar file by following Creating a jar File in Eclipse tutorial, and use this in your project.

Now you should have all your dependencies resolved. Extra steps are needed in case you have dynamic class loading too.