Examples of BeanWriter

org.apache.commons.betwixt.io.BeanWriter

BeanWriter outputs beans as XML to an io stream.

The output for each bean is an xml fragment (rather than a well-formed xml-document). This allows bean representations to be appended to a document by writing each in turn to the stream. So to create a well formed xml document, you'll need to write the prolog to the stream first. If you append more than one bean to the stream, then you'll need to add a wrapping root element as well.
The line ending to be used is set by {@link #setEndOfLine}.
The output can be formatted (with whitespace) for easy reading by calling {@link #enablePrettyPrint}. The output will be indented. The indent string used is set by {@link #setIndent}.
Bean graphs can sometimes contain cycles. Care must be taken when serializing cyclic bean graphs since this can lead to infinite recursion. The approach taken by BeanWriter is to automatically assign an ID attribute value to beans. When a cycle is encountered, an element is written that has the IDREF attribute set to the id assigned earlier.
The names of the ID and IDREF attributes used can be customized by the XMLBeanInfo. The id's used can also be customized by the user via IDGenerator subclasses. The implementation used can be set by the IdGenerator property. BeanWriter defaults to using SequentialIDGenerator which supplies id values in numeric sequence.
If generated ID attribute values are not acceptable in the output, then this can be disabled by setting the WriteIDs property to false. If a cyclic reference is encountered in this case then a CyclicReferenceException will be thrown. When the WriteIDs property is set to false, it is recommended that this exception is caught by the caller. @author James Strachan @author Martin van den Bemt
org.beanio.BeanWriter
org.milyn.javabean.dynamic.serialize.BeanWriter
Bean Serializer. @author tom.fennelly@gmail.com

Examples of org.apache.commons.betwixt.io.BeanWriter

    public void testBeanWriter() throws Exception {
        Object bean = createBean();
        
        System.out.println( "Now trying pretty print" );
        
        BeanWriter writer = new BeanWriter();
        writer.setWriteEmptyElements(true);
        writer.enablePrettyPrint();
        writer.write( bean );
    }

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Examples of org.apache.commons.betwixt.io.BeanWriter

    
    
    public void testLooping() throws Exception {
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        BeanWriter writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
        
        // logging for debugging jsut this method 
//        SimpleLog log = new SimpleLog("[testLooping:BeanWriter]");
//        log.setLevel(SimpleLog.LOG_LEVEL_TRACE);
//        writer.setLog(log);
        
//        log = new SimpleLog("[testLooping:AbstractBeanWriter]");
//        log.setLevel(SimpleLog.LOG_LEVEL_TRACE);
//        writer.setAbstractBeanWriterLog(log);
        
//        log = new SimpleLog("[testLooping]");
//        log.setLevel(SimpleLog.LOG_LEVEL_TRACE);
        
        writer.enablePrettyPrint();
        writer.write( LoopBean.createNoLoopExampleBean() );    
        
        String xml ="<?xml version='1.0'?><LoopBean><name>Root</name><friend><name>level1</name>"
                + "<friend><name>level2</name><friend><name>level3</name><friend><name>level4</name>"
                + "<friend><name>level5</name></friend></friend></friend></friend></friend></LoopBean>";
      
        xmlAssertIsomorphicContent(
                            "Test no loop",
                            parseString(out.getBuffer().toString()),
                            parseString(xml), 
                            true);        
        
        out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
        writer.write( LoopBean.createLoopExampleBean() );  
        xml ="<?xml version='1.0'?><LoopBean><name>Root</name><friend><name>level1</name>"
                + "<friend><name>level2</name><friend><name>level3</name><friend><name>level4</name>"
                + "<friend><name>level5</name><friend idref='1'/></friend></friend></friend>"
                + "</friend></friend></LoopBean>";
        xmlAssertIsomorphicContent(
                            "Test loop",
                            parseString(out.getBuffer().toString()),
                            parseString(xml), 
                            true);  
        
        // test not writing IDs


        
//        log.info("Writing LoopBean.createNoLoopExampleBean...");
        
        out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
        writer.setWriteIDs(false);
        writer.write( LoopBean.createNoLoopExampleBean() );
        xml ="<?xml version='1.0'?><LoopBean><name>Root</name><friend><name>level1</name><friend>"
            + "<name>level2</name><friend><name>level3</name><friend><name>level4</name><friend>"
            + "<name>level5</name></friend></friend>"
            + "</friend></friend></friend></LoopBean>";
                
        xmlAssertIsomorphicContent(  
                            "Test no loop, no ids",
                            parseString(out.getBuffer().toString()),
                            parseString(xml), 
                            true); 
        
//        log.info("Writing LoopBean.createIdOnlyLoopExampleBean...");
        
        out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
        writer.setWriteIDs(false);
        writer.write( LoopBean.createIdOnlyLoopExampleBean() );
        xml = "<?xml version='1.0'?><LoopBean><name>Root</name><friend><name>level1</name>"
            + "<friend><name>level2</name><friend><name>level3</name><friend><name>level4</name>"
            + "<friend><name>level5</name><friend><name>Root</name></friend></friend>"
            + "</friend></friend></friend></friend></LoopBean>";
                
        xmlAssertIsomorphicContent(  
                            "Test id only loop",
                            parseString(out.getBuffer().toString()),
                            parseString(xml), 
                            true); 
        
        try {   
//            log.info("Writing LoopBean.createLoopExampleBean...")
            out = new StringWriter();
            out.write("<?xml version='1.0'?>");
            writer = new BeanWriter(out);
            writer.setWriteEmptyElements( true );
            writer.setWriteIDs(false);
            writer.write( LoopBean.createLoopExampleBean() );   
            fail("CyclicReferenceException not thrown!");
            
        } catch (CyclicReferenceException e) {
            // everything's fine
        }

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Examples of org.apache.commons.betwixt.io.BeanWriter

    public void testSimpleBean() throws Exception {
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0' encoding='UTF-8'?>");
//        SimpleLog log = new SimpleLog("[testSimpleBean:XMLIntrospector]");
//        log.setLevel(SimpleLog.LOG_LEVEL_TRACE);
        BeanWriter writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
//        writer.getXMLIntrospector().setLog(log);
        
//        log = new SimpleLog("[testSimpleBean:XMLIntrospectorHelper]");
//        XMLIntrospectorHelper.setLog(log);
    
        writer.setWriteIDs(false);
  SimpleTestBean bean = new SimpleTestBean("alpha-value","beta-value","gamma-value");
        writer.write(bean);
        out.flush();
        String xml = out.toString();
        
        xmlAssertIsomorphicContent(
                    parseFile("src/test/org/apache/commons/betwixt/dotbetwixt/simpletestone.xml"),

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Examples of org.apache.commons.betwixt.io.BeanWriter

    public void testBadDotBetwixtNames() throws Exception {
        // this will work by testing that the output is well formed
        
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0' encoding='UTF-8'?>");
        BeanWriter writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
        writer.write(new BadDotBetwixtNamesBean("one", "two"));
        
//        System.out.println(out.toString());
        
        // this should fail if the output is not well formed
        parseString(out.toString());

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Examples of org.apache.commons.betwixt.io.BeanWriter

    }
    
    public void testEscaping() throws Exception {
        //XXX find a way to automatically verify test
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        BeanWriter writer = new BeanWriter(out);
        writer.setWriteEmptyElements( true );
        writer.enablePrettyPrint(); 
        XMLIntrospector introspector = new XMLIntrospector();
        introspector.setAttributesForPrimitives(true);
        writer.setXMLIntrospector(introspector);
        writer.write(new LoopBean("Escape<LessThan"));
        writer.write(new LoopBean("Escape>GreaterThan"));
        writer.write(new LoopBean("Escape&amphersand"));
        writer.write(new LoopBean("Escape'apostrophe"));
        writer.write(new LoopBean("Escape\"Quote"));
        
        CustomerBean bean = new CustomerBean();
        bean.setEmails( new String[] { 
                                        "Escape<LessThan",
                                        "Escape>GreaterThan",
                                        "Escape&amphersand",
                                        "Escape'apostrophe",
                                        "Escape\"Quote"} );
                                        
        // The attribute value escaping needs test too..
        bean.setName("Escape<LessThan");
        AddressBean address = new AddressBean();
        address.setCode("Escape>GreaterThan");
        address.setCountry("Escape&amphersand");
        address.setCity("Escape'apostrophe");
        address.setStreet("Escape\"Quote");
        bean.setAddress(address);
        
        writer.write(bean);
        out.flush();
        String result = "<?xml version='1.0'?><beans>" + out.toString() + "</beans>";
        
        // check for the elemant content..
        assertTrue(result.indexOf("<email>Escape&lt;LessThan</email>") > -1 );

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Examples of org.apache.commons.betwixt.io.BeanWriter

        Element element = new Element();
        element.setValue("<greeting>What Ho Jeeves!</greeting>");
        
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        BeanWriter writer = new BeanWriter(out);
        writer.getXMLIntrospector().setAttributesForPrimitives(false);
        writer.write(element);
        
        String expected = "<?xml version='1.0'?><Element>\n<value>&lt;greeting&gt;What Ho Jeeves!&lt;/greeting&gt;</value>\n</Element>\n";
        String xml = out.getBuffer().toString();
         
        assertEquals(expected,xml);

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Examples of org.apache.commons.betwixt.io.BeanWriter

        Element element = new Element();
        element.setValue("<greeting>What Ho Jeeves!</greeting>");
        
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        BeanWriter writer = new BeanWriter(out);
        writer.getXMLIntrospector().setAttributesForPrimitives(false);
        XMLBeanInfo elementInfo = writer.getXMLIntrospector().introspect(Element.class);
        elementInfo.getElementDescriptor().getElementDescriptors()[0]
            .getOptions().addOption(MixedContentEncodingStrategy.ENCODING_OPTION_NAME, "CDATA");  
         
        writer.write(element);
        
        String expected = "<?xml version='1.0'?><Element>\n<value><![CDATA[<greeting>What Ho Jeeves!</greeting>]]></value>\n</Element>\n";
        String xml = out.getBuffer().toString();
         
        assertEquals(expected,xml);

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Examples of org.apache.commons.betwixt.io.BeanWriter

    
    /** Test output of bean with mixed content */
    public void testMixedContent() throws Exception {
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0' encoding='UTF-8'?>");
        BeanWriter writer = new BeanWriter( out );
        writer.write( new MixedContentBean("First", "Last", "Always") );
        
        String xml = "<?xml version='1.0' encoding='UTF-8'?><foo version='1.0'>"
            + "<bar version='First'>Fiddle sticks<baa>Last</baa>Always</bar></foo>";
        
        xmlAssertIsomorphicContent(

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Examples of org.apache.commons.betwixt.io.BeanWriter

        Element element = new Element();
        element.setValue("<greeting>What Ho Jeeves!</greeting>");
        
        StringWriter out = new StringWriter();
        out.write("<?xml version='1.0'?>");
        BeanWriter writer = new BeanWriter(out);
        writer.getXMLIntrospector().setAttributesForPrimitives(false);
        XMLBeanInfo elementInfo = writer.getXMLIntrospector().introspect(Element.class);
        elementInfo.getElementDescriptor().getElementDescriptors()[0]
            .getOptions().addOption("org.apache.commons.betwixt.mixed-content-encoding", "escaped");
        writer.write(element);
        
        String expected = "<?xml version='1.0'?><Element>\n<value>&lt;greeting&gt;What Ho Jeeves!&lt;/greeting&gt;</value>\n</Element>\n";
        String xml = out.getBuffer().toString();
         
        assertEquals(expected,xml);

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Examples of org.apache.commons.betwixt.io.BeanWriter

    /**
     * Testing valid endofline characters.
     * It tests if there is a warning on System.err
     */
    public void testValidEndOfLine() throws Exception {
        BeanWriter writer = new BeanWriter();
        writer.setWriteEmptyElements(true);
        
        // store the system err
        PrintStream errStream = System.err;
        ByteArrayOutputStream warning = new ByteArrayOutputStream();
        System.setErr(new PrintStream(warning));
        
        // force logging to go to System.err
        writer.setLog( new SimpleLog( "test.betwixt" ) );
        
        
        writer.setEndOfLine("X");
        warning.flush();
        assertTrue(warning.toString().startsWith("[WARN]"));
        warning.reset();
        writer.setEndOfLine("\tX");
        warning.flush();
        assertTrue(warning.toString().startsWith("[WARN]"));
        warning.reset();
        // now test a valid value..
        writer.setEndOfLine(" ");
        warning.flush();
        assertTrue(warning.toString().equals(""));
        warning.reset();
        // set the System.err back again..
        System.setErr(errStream);

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