Re: Betwixt appears to escape special characters

Wed, 24 Mar 2004 04:46:45 -0800

interesting :)

the standard use case for betwixt is to have properties containing real java values which are mapped from the xml by betwixt. that's why all characters are appropriately escaped.

AFAIK at the moment, there is no support for properties that need mapping to CDATA (since no one's ever presented a use case for this before). AIUI if you set '<error>Some Error</error>' as the property value then betwixt will correctly escape it. i'm not really clear what use case demands escaping through CDATA rather than by escaping each character. maybe someone could remind me of an occasion when CDATA sections are treated differently.

the easiest way to add this kind of feature would be to add settings that escaping to be ignored for some properties. there are a couple of drawbacks that i think i can see for this approach:

1. it leads to inconsistency between SAX pipelines and output to string. (the downstream SAX consumer must assume that the '<![CDATA[...]]/>' must already have been process from something like '&lt;![CDATA[&lt;error&gt;...&lt;/error&gt;]]&gt;')
2. it leads to inconsistency between bean property setters and getters: when reading a bean, the section wrapping would already have been stripped by the xml parser. therefore, the bean would need to be able to cope with processing a plain <error>Some Error</error> into a CDATA section.

therefore it seems to me to be better to continue with the existing strategy. so, the property value would need to be '<error>Some Error</code>'. betwixt would then need to recognize that this needs to be escaped as CDATA (rather than through character escapes).

would this plan be acceptable?

- robert

On 23 Mar 2004, at 18:03, John Crossman wrote:

I am also interested in the answer here.

Maxim: How do you get certain elements to be given <![CDATA[ ]]/> treatment? And is it possible to only have CDATA applied when the contained text-value is HTML or equivalent? How do we control this in the .betwixt file?

Thanks!

J.


-----Original Message-----
From: Nechiporenko, Maxim [mailto:[EMAIL PROTECTED]
Sent: Monday, March 22, 2004 10:41 AM
To: [EMAIL PROTECTED]
Subject: Betwixt appears to escape special characters



I am having trouble marshalling a JavaBean with one of its attribute values set to a text which is an XML string. It looks like Betwixt escapes special characters coverting them to ASCII. I have a JavaBean Foo.java, and I use Commons Betwixt to marshall JavaBean in XML. Here is what I am doing:

// JavaBean
public class Foo
{
  private String val = null;

  public void setVal (String val)
  {
    this.val = val;
  }

  public String getVal()
  {
    return this.val;
  }
}

// Test program
import java.io.StringWriter;
import org.apache.commons.betwixt.io.BeanWriter;

public class test
{
  public static void main (String [] args)
  {
    test t = new test();
    t.doStuff();
  }

  public void doStuff()
  {
    Foo bean = new Foo();
    bean.setVal("<![CDATA[<error>Some Error</error>]]");

    StringWriter outputWriter = new StringWriter();
    BeanWriter beanWriter = new BeanWriter(outputWriter);
    beanWriter.getXMLIntrospector().setAttributesForPrimitives(false);
    beanWriter.setWriteIDs(false);
    beanWriter.enablePrettyPrint();
    beanWriter.write("foo", bean);
    System.out.println("XML:  "+ outputWriter.toString());
  }

The XML I am getting looks the following:

<foo>
  <val>
    &lt;![CDATA[&lt;error&gt;Some Error&lt;/error&gt;]]&gt;
  </val>
</foo>

when I would need it to be:

<foo>
  <val>
    <![CDATA[<error>Some Error</error>]]
  </val>
</foo>

I have no issues marshalling this Bean using Castor. Any help on how to get Betwixt to produce the desired XML string is welcome.

Thanks,
Max



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