SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
        Schema schema = null;
        if (this.classificationConfig == null)
        {
            try
            {
                schema = sf.newSchema(this.getClass().getResource("/PdfReader/classification.xsd"));
            }
            catch (SAXException e)
            {
                log
                    .error(
                        "Problem with reading classification xml configuration. Xml is not valid by xsd schema. ", e);
            }

            JAXBContext ctx = JAXBContext.newInstance(Classification.class);
            Unmarshaller unmarsh = ctx.createUnmarshaller();
            unmarsh.setSchema(schema);

            this.classificationConfig =
                (Classification) unmarsh.unmarshal(new ByteArrayInputStream(xmlConfig.getBytes()));

        }
        else
        {
            try
            {
                schema = sf.newSchema(this.getClass().getResource("/PdfReader/pdfReaderAdapter.xsd"));
            }
            catch (SAXException e)
            {
                log.error("Problem with reading pdfReaderAdapter xml configuration. Xml is not valid by xsd schema.",
                    e);
            }

            JAXBContext ctx = JAXBContext.newInstance(PdfReaderAdapter.class);
            Unmarshaller unmarsh = ctx.createUnmarshaller();
            unmarsh.setSchema(schema);

            this.readerAdapterConfig =
                (PdfReaderAdapter) unmarsh.unmarshal(new ByteArrayInputStream(xmlConfig.getBytes()));
        }