Re: Utility to pretty print xml for the model objects

2011-05-17 Thread Simon Nash 

ant elder wrote:
Does anyone know how to get XML from the Tuscany model objects thats 
nicely formatted?


As a quick hack I came up with this but it seems like theres probably 
something better and I'm not sure that 
org.apache.xml.serialize.OutputFormat and 
org.apache.xml.serialize.XMLSerializer are going to be there by default 
in all runtimes:



I did something very similar in org.apache.tuscany.sca.itest.builder.TestUtils.

  Simon


public class PrettyPrintTestCase {

@Test
public void testReadWriteComposite() throws Exception {
DefaultExtensionPointRegistry extensionPointRegistry = new 
DefaultExtensionPointRegistry();

Composite model = new DefaultAssemblyFactory().createComposite();
model.setName(new QName(myNs,myName));
model.setLocal(true);
model.setAutowire(false);
model.getIncludes().add(model);
String xml = modelToXML(model, true, extensionPointRegistry);
System.out.println(xml);
}

/**
 * Helper method to get the XML string for a model object.
 */
public static String modelToXML(Base model, boolean pretty, 
ExtensionPointRegistry extensionPointRegistry) {

try {
StAXHelper stAXHelper = 
StAXHelper.getInstance(extensionPointRegistry);
StAXArtifactProcessorExtensionPoint staxProcessors = 
extensionPointRegistry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
ExtensibleStAXArtifactProcessor staxProcessor = new 
ExtensibleStAXArtifactProcessor(staxProcessors, null, 
stAXHelper.getOutputFactory());

ByteArrayOutputStream bos = new ByteArrayOutputStream();
staxProcessor.write(model, bos, new 
ProcessorContext(extensionPointRegistry));

bos.close();

if (!pretty) {
return bos.toString();
}
   
DocumentBuilderFactory factory = 
DocumentBuilderFactory.newInstance();

DocumentBuilder parser = factory.newDocumentBuilder();
Document document = parser.parse(new 
ByteArrayInputStream(bos.toByteArray()));
   
bos = new ByteArrayOutputStream();

OutputFormat format = new OutputFormat(document);
format.setLineWidth(65);
format.setIndenting(true);
format.setIndent(2);
XMLSerializer serializer = new XMLSerializer(bos, format);
serializer.serialize(document);
return bos.toString();
   
} catch (ContributionWriteException e) {

throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
} catch (ParserConfigurationException e) {
throw new RuntimeException(e);
} catch (SAXException e) {
throw new RuntimeException(e);
}
}
}

   ...ant

Re: Utility to pretty print xml for the model objects

2011-05-17 Thread ant elder 
On Tue, May 17, 2011 at 11:05 AM, Simon Nash n...@apache.org wrote:

 ant elder wrote:

 Does anyone know how to get XML from the Tuscany model objects thats
 nicely formatted?

 As a quick hack I came up with this but it seems like theres probably
 something better and I'm not sure that org.apache.xml.serialize.OutputFormat
 and org.apache.xml.serialize.XMLSerializer are going to be there by default
 in all runtimes:

  I did something very similar in
 org.apache.tuscany.sca.itest.builder.TestUtils


Ok thanks for the pointed, looks just the same. I'm not sure if we should
use those org.apache.xml.serialize classes though in 2.x as i don't want to
require a dependency on xerces. They are there in the JDK i'm using, guess i
need to research if they're there on other JDKs too.

   ...ant

Re: Utility to pretty print xml for the model objects

2011-05-17 Thread ant elder 
On Tue, May 17, 2011 at 11:15 AM, ant elder ant.el...@gmail.com wrote:



 On Tue, May 17, 2011 at 11:05 AM, Simon Nash n...@apache.org wrote:

 ant elder wrote:

 Does anyone know how to get XML from the Tuscany model objects thats
 nicely formatted?

 As a quick hack I came up with this but it seems like theres probably
 something better and I'm not sure that org.apache.xml.serialize.OutputFormat
 and org.apache.xml.serialize.XMLSerializer are going to be there by default
 in all runtimes:

  I did something very similar in
 org.apache.tuscany.sca.itest.builder.TestUtils


 Ok thanks for the pointed, looks just the same. I'm not sure if we should
 use those org.apache.xml.serialize classes though in 2.x as i don't want to
 require a dependency on xerces. They are there in the JDK i'm using, guess i
 need to research if they're there on other JDKs too.

...ant


It sounds like in JDK6 org.w3c.dom.ls.LSSerializer should be used, i've
added some code to try that here:
https://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/Utils.java

It still doesn't seem perfect code, and it doesn't seem great to have to
serialize to an xml string then read into a Document then serialize back to
formatted xml string.

   ...ant

Re: Utility to pretty print xml for the model objects

2011-05-17 Thread Simon Laws 

 It sounds like in JDK6 org.w3c.dom.ls.LSSerializer should be used, i've
 added some code to try that here:
 https://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/Utils.java

 It still doesn't seem perfect code, and it doesn't seem great to have to
 serialize to an xml string then read into a Document then serialize back to
 formatted xml string.

    ...ant



Not sure without reading the doc in detail but is there a way to
convert the result in the XMLStreamWriter into a StAX source for a
Transformer with indenting set on.

If you already have it working it may be more trouble than it's worth
trying to answer that question.

Regards

Simon

-- 
Apache Tuscany committer: tuscany.apache.org
Co-author of a book about Tuscany and SCA: tuscanyinaction.com