Include basic formatting option when copying an XMLStreamReader object to a
XMLStreamWriter object via the STAXUtils copy method.
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Key: XFIRE-961
URL: http://jira.codehaus.org/browse/XFIRE-961
Project: XFire
Issue Type: Improvement
Components: Core
Affects Versions: 1.2.4
Environment: JDK1.5.0_09
Reporter: Scott Seixas
Assignee: Dan Diephouse
I have created a Web Service whose i/o is an XMLStreamReader object and this
service is invoked via XFire's MessageBinding implementation. In a custom
handler on the client side, I invoke the STAXUtils copy method to create an
equivalent XMLStreamWriter object from the XMLStreamReader InMessage. When I
flush this XMLStreamWriter object to the defined output stream, the output is
not formatted and is delivered as one long continuous string.
I have updated the STAXUtils copy method to implement some basic formatting
(line breaks and hierarchical indentation) when the format flag is set to true.
I have overloaded the existing method, but a new method to be used by client
programs that implement the MessageBinding solution would also be sufficient.
{code}
public static void copy( XMLStreamReader reader, XMLStreamWriter writer )
throws XMLStreamException
{
copy( reader, writer, false );
}
public static void copy( XMLStreamReader reader, XMLStreamWriter writer,
boolean format )
throws XMLStreamException
{
int read = 0; // number of elements read in
int event = reader.getEventType();
String offset = "";
boolean isNext = false;
boolean isParentElement = true;
while ( reader.hasNext() )
{
switch( event )
{
case XMLStreamConstants.START_ELEMENT:
read++;
if( format )
writer.writeCharacters( offset );
writeStartElement( reader, writer );
if( format )
{
isNext = true;
event = reader.next();
if( event == XMLStreamConstants.START_ELEMENT )
{
writer.writeCharacters( "\n" );
offset += " ";
}
else
{
isParentElement = false;
}
}
break;
case XMLStreamConstants.END_ELEMENT:
if( format )
{
if( isParentElement )
{
if( offset.length() > 1 )
offset = offset.substring( 0, offset.length() - 2 );
writer.writeCharacters( offset );
}
isParentElement = true;
}
writer.writeEndElement();
if( format )
writer.writeCharacters( "\n");
read--;
if ( read <= 0 )
return;
break;
case XMLStreamConstants.CHARACTERS:
writer.writeCharacters( reader.getText() );
break;
case XMLStreamConstants.START_DOCUMENT:
case XMLStreamConstants.END_DOCUMENT:
case XMLStreamConstants.ATTRIBUTE:
case XMLStreamConstants.NAMESPACE:
break;
case XMLStreamConstants.CDATA:
writer.writeCData(reader.getText());
break;
default:
break;
}
if( !isNext )
event = reader.next();
else
isNext = false;
}
}
{code}
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