/**
* Converts the inbound body to a {@link Source}, if the body is <b>not</b> already a {@link
* Source}.
*
* <p>This implementation will prefer to source in the following order:
*
* <ul>
* <li>StAX - If StAX is allowed
* <li>SAX - SAX as 2nd choice
* <li>Stream - Stream as 3rd choice
* <li>DOM - DOM as 4th choice
* </ul>
*/
protected Source getSource(Exchange exchange, Object body) {
// body may already be a source
if (body instanceof Source) {
return (Source) body;
}
Source source = null;
if (body != null) {
if (isAllowStAX()) {
// try StAX if enabled
source =
exchange.getContext().getTypeConverter().tryConvertTo(StAXSource.class, exchange, body);
}
if (source == null) {
// then try SAX
source =
exchange.getContext().getTypeConverter().tryConvertTo(SAXSource.class, exchange, body);
tryAddEntityResolver((SAXSource) source);
}
if (source == null) {
// then try stream
source =
exchange
.getContext()
.getTypeConverter()
.tryConvertTo(StreamSource.class, exchange, body);
}
if (source == null) {
// and fallback to DOM
source =
exchange.getContext().getTypeConverter().tryConvertTo(DOMSource.class, exchange, body);
}
// as the TypeConverterRegistry will look up source the converter differently if the type
// converter is loaded different
// now we just put the call of source converter at last
if (source == null) {
TypeConverter tc =
exchange.getContext().getTypeConverterRegistry().lookup(Source.class, body.getClass());
if (tc != null) {
source = tc.convertTo(Source.class, exchange, body);
}
}
}
if (source == null) {
if (isFailOnNullBody()) {
throw new ExpectedBodyTypeException(exchange, Source.class);
} else {
try {
source = converter.toDOMSource(converter.createDocument());
} catch (ParserConfigurationException e) {
throw new RuntimeTransformException(e);
}
}
}
return source;
}
