Examples of org.apache.axiom.om.OMSourcedElement

org.apache.axiom.om.OMSourcedElement
An OMSourcedElement is an OMElement whose data is backed by an arbitrary java object. The backing java object is accessed via the OMDataSource (or OMDataSourceExt) interface. An OMSourcedElement can be in one of two states. Not Expanded: In this state the backing object is used to read and write the xml Expanded: In this state, the OMSourcedElement is backed by a normal OM tree. Here are the steps to place an arbitrary java object into the OM tree. 1) Write an OMDataSourceExt class that provides access to your java object. 2) Use OMFactory.createOMElement(OMDataSource, String, OMNamespace) to create the OMSourcedElement. 3) Attach the OMSourcedElement to your OMTree.

        // Make sure the Axiom structure is intact
        SOAPEnvelope env = axisMC.getEnvelope();
        SOAPBody body = env.getBody();
        OMElement child = body.getFirstElement();
        assertTrue(child instanceof OMSourcedElement);
        OMSourcedElement omse = (OMSourcedElement) child;
        assertTrue(!omse.isExpanded());
        OMDataSource ds = omse.getDataSource();
        assertTrue(ds instanceof JAXBBlockImpl);
        
        // Now simulate persisting the message
        File theFile = null;
        String theFilename = null;
        theFile = File.createTempFile("MessagePersistTest", null);
        //theFile.deleteOnExit();
        theFilename = theFile.getName();
        System.out.println("temp file = [" + theFilename + "]");
        
        // Setup an output stream to a physical file
        FileOutputStream outStream = new FileOutputStream(theFile);


        // Attach a stream capable of writing objects to the 
        // stream connected to the file
        ObjectOutputStream outObjStream = new ObjectOutputStream(outStream);


        // Try to save the message context
        System.out.println("saving message context.....");
        outObjStream.writeObject(axisMC);


        // Close out the streams
        outObjStream.flush();
        outObjStream.close();
        outStream.flush();
        outStream.close();
        System.out.println("....saved message context.....");
        long filesize = theFile.length();
        System.out.println("file size after save [" + filesize
                + "]   temp file = [" + theFilename + "]");
        
        // Make sure the Axiom structure is intact.  
        env = axisMC.getEnvelope();
        body = env.getBody();
        child = body.getFirstElement();
        assertTrue(child instanceof OMSourcedElement);
        omse = (OMSourcedElement) child;
        assertTrue(!omse.isExpanded());
        ds = omse.getDataSource();
        assertTrue(ds instanceof JAXBBlockImpl);
        
        // Simulate transport
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        OMOutputFormat outputFormat = new OMOutputFormat();

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        // Make sure the Axiom structure is intact
        SOAPEnvelope env = axisMC.getEnvelope();
        SOAPBody body = env.getBody();
        OMElement child = body.getFirstElement();
        assertTrue(child instanceof OMSourcedElement);
        OMSourcedElement omse = (OMSourcedElement) child;
        assertTrue(!omse.isExpanded());
        OMDataSource ds = omse.getDataSource();
        assertTrue(ds instanceof JAXBBlockImpl);
        
        // Now simulate persisting the message in memory
        SOAPEnvelope env2 = CopyUtils.copy(env);
        
        // Make sure the Axiom structure is intact.  
        env = axisMC.getEnvelope();
        body = env.getBody();
        child = body.getFirstElement();
        assertTrue(child instanceof OMSourcedElement);
        omse = (OMSourcedElement) child;
        assertTrue(!omse.isExpanded());
        ds = omse.getDataSource();
        assertTrue(ds instanceof JAXBBlockImpl);
        
        // Simulate transport
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        OMOutputFormat outputFormat = new OMOutputFormat();
        outputFormat.setDoOptimize(true);
        outputFormat.setMimeBoundary("MIMEBoundary_Axis2Rocks");
        env.serializeAndConsume(baos, outputFormat);


        String newText = baos.toString();
        System.out.println(newText);
        assertTrue(newText.contains("soap"));
        assertTrue(newText.contains("Envelope"));
        assertTrue(newText.contains("Body"));
        assertTrue(newText.indexOf("MIMEBoundary_Axis2Rocks") > 0);
        assertTrue(newText.indexOf(sampleText) > 0);
        assertTrue(newText.indexOf("<soapenv:Body><sendImage xmlns=\"urn://mtom.test.org\"><input><imageData><xop:Include") > 0);     
        
        // Now check the copied envelope
        body = env2.getBody();
        child = body.getFirstElement();
        assertTrue(child instanceof OMSourcedElement);
        omse = (OMSourcedElement) child;
        assertTrue(!omse.isExpanded());
        ds = omse.getDataSource();
        assertTrue(ds instanceof JAXBDataSource);
        
        // Simulate transport on the copied message
        baos = new ByteArrayOutputStream();
        outputFormat = new OMOutputFormat();

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            OMNamespace ns = factory.createOMNamespace(namespace, reader.getPrefix());
            
            Object jaxb = jdsContext.unmarshal(reader);
            
            OMDataSource ds = new JAXBDataSource(jaxb, jdsContext);
            OMSourcedElement omse = factory.createOMElement(ds, localPart, ns);
            
            parent.addChild(omse);
            JAXBCustomBuilderMonitor.updateTotalCreates();
            return omse;
        } catch (JAXBException e) {

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    public void testGetTextAsStreamWithOMSourcedElement() throws Exception {
        OMFactory factory = OMAbstractFactory.getOMFactory();
        DataSource ds = new RandomDataSource(445566, 32, 128, 20000000);
        QName qname = new QName("a");
        Charset cs = Charset.forName("ascii");
        OMSourcedElement element = new OMSourcedElementImpl(qname, factory,
                new WrappedTextNodeOMDataSourceFromDataSource(qname, ds, cs));
        Reader in = ElementHelper.getTextAsStream(element, true);
        assertFalse(in instanceof StringReader);
        compareStreams(new InputStreamReader(ds.getInputStream(), cs), in);
    }

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    public void testWriteTextToWithOMSourcedElement() throws Exception {
        OMFactory factory = OMAbstractFactory.getOMFactory();
        DataSource ds = new RandomDataSource(665544, 32, 128, 20000000);
        QName qname = new QName("a");
        OMSourcedElement element = new OMSourcedElementImpl(qname, factory,
                new WrappedTextNodeOMDataSourceFromDataSource(qname, ds, Charset.forName("ascii")));
        Reader in = new InputStreamReader(ds.getInputStream(), "ascii");
        Writer out = new CharacterStreamComparator(in);
        ElementHelper.writeTextTo(element, out, true); // cache doesn't matter here
        out.close();

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        }
        String testData = buffer.toString();
        QName qname = new QName("data");
        OMDataSource ds = new WrappedTextNodeOMDataSourceFromReader(qname, new StringReader(testData));
        OMFactory factory = OMAbstractFactory.getOMFactory();
        OMSourcedElement element = new OMSourcedElementImpl(qname, factory, ds);
        assertEquals(testData, element.getText());
    }

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            SOAPFaultDetail detail = factory.createSOAPFaultDetail(soapFault);
            if (!ignoreDetailBlocks) {
                for (int i = 0; i < blocks.length; i++) {
                    // A Block implements OMDataSource.  So create OMSourcedElements
                    // for each of the Blocks.
                    OMSourcedElement element =
                            factory.createOMElement(blocks[i], blocks[i].getQName());
                    detail.addChild(element);
                }
            }
        }

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        writer = StAXUtils.createXMLStreamWriter(byteArrayOutputStream);


        // Now use StreamingOMSerializer to write the input stream to the output stream
        SOAPEnvelope env = (SOAPEnvelope) builder.getDocumentElement();
        SOAPBody body = env.getBody();
        OMSourcedElement omse = (OMSourcedElement) body.getFirstElement();
        
        StreamingOMSerializer serializer = new StreamingOMSerializer();
        serializer.serialize(env.getXMLStreamReaderWithoutCaching(),
                             writer);
        writer.flush();


        String outputString = new String(byteArrayOutputStream.toByteArray());
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString != null && !"".equals(outputString) && outputString.length() > 1);
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString.contains("axis2:input"));
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString.contains("This is some text"));
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString.contains("Some Other Text"));
        
        assertTrue("Expectation is that an OMSourcedElement was created for the payload", 
                omse != null);
        assertTrue("Expectation is that the OMSourcedElement was not expanded by serialization ", 
                !omse.isExpanded());
    }

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        writer = StAXUtils.createXMLStreamWriter(byteArrayOutputStream);


        // Now use StreamingOMSerializer to write the input stream to the output stream
        SOAPEnvelope env = (SOAPEnvelope) builder.getDocumentElement();
        SOAPBody body = env.getBody();
        OMSourcedElement omse = (OMSourcedElement) body.getFirstElement();
        
        StreamingOMSerializer serializer = new StreamingOMSerializer();
        serializer.serialize(env.getXMLStreamReaderWithoutCaching(),
                             writer);
        writer.flush();


        String outputString = new String(byteArrayOutputStream.toByteArray());
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString != null && !"".equals(outputString) && outputString.length() > 1);
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString.contains("Hello World"));
        
        assertTrue("Expectation is that an OMSourcedElement was created for the payload", 
                omse != null);
        assertTrue("Expectation is that the OMSourcedElement was not expanded by serialization ", 
                !omse.isExpanded());
    }

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        writer = StAXUtils.createXMLStreamWriter(byteArrayOutputStream);


        // Now use StreamingOMSerializer to write the input stream to the output stream
        SOAPEnvelope env = (SOAPEnvelope) builder.getDocumentElement();
        SOAPBody body = env.getBody();
        OMSourcedElement omse = (OMSourcedElement) body.getFirstElement();
        
        StreamingOMSerializer serializer = new StreamingOMSerializer();
        serializer.serialize(env.getXMLStreamReaderWithoutCaching(),
                             writer);
        writer.flush();


        String outputString = new String(byteArrayOutputStream.toByteArray());
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                outputString != null && !"".equals(outputString) && outputString.length() > 1);
        int indexHelloWorld = outputString.indexOf("Hello World");
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                indexHelloWorld > 0);
        int indexHelloWorld2 = outputString.indexOf("Hello World", indexHelloWorld+1);
        assertTrue("Expected output was incorrect.  Received:" + outputString,
                indexHelloWorld2 < 0);


        assertTrue("Expectation is that an OMSourcedElement was created for the payload", 
                omse != null);
        assertTrue("Expectation is that the OMSourcedElement was not expanded by serialization ", 
                !omse.isExpanded());
    }

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