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package com.sun.xml.ws.streaming;

import com.sun.istack.Nullable;
import com.sun.xml.ws.encoding.HasEncoding;
import com.sun.xml.ws.encoding.SOAPBindingCodec;

import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.XMLStreamException;
import java.util.Map;
import java.io.OutputStream;

/**
 * 

XMLStreamWriterUtil provides some utility methods intended to be used * in conjunction with a StAX XMLStreamWriter.

* * @author [email protected] */ public class XMLStreamWriterUtil { private XMLStreamWriterUtil() { } /** * Gives the underlying stream for XMLStreamWriter. It closes any start elements, and returns the stream so * that JAXB can write infoset directly to the stream. * * @param writer XMLStreamWriter for which stream is required * @return underlying OutputStream, null if writer doesn't provide a way to get it * @throws XMLStreamException if any of writer operations throw the exception */ public static @Nullable OutputStream getOutputStream(XMLStreamWriter writer) throws XMLStreamException { Object obj = null; // Hack for JDK6's SJSXP if (writer instanceof Map) { obj = ((Map) writer).get("sjsxp-outputstream"); } // woodstox if (obj == null) { try { obj = writer.getProperty("com.ctc.wstx.outputUnderlyingStream"); } catch(Exception ie) { // Catch all exceptions. SJSXP in JDK throws NPE // nothing to do here } } // SJSXP if (obj == null) { try { obj = writer.getProperty("http://java.sun.com/xml/stream/properties/outputstream"); } catch(Exception ie) { // Catch all exceptions. SJSXP in JDK throws NPE // nothing to do here } } if (obj != null) { writer.writeCharacters(""); // Force completion of open elems writer.flush(); return (OutputStream)obj; } return null; } /** * Gives the encoding with which XMLStreamWriter is created. * * @param writer XMLStreamWriter for which encoding is required * @return null if cannot be found, else the encoding */ public static @Nullable String getEncoding(XMLStreamWriter writer) { /* * TODO Add reflection logic to handle woodstox writer * as it implements XMLStreamWriter2#getEncoding() * It's not that important since woodstox writer is typically wrapped * in a writer with HasEncoding */ return (writer instanceof HasEncoding) ? ((HasEncoding)writer).getEncoding() : null; } public static String encodeQName(XMLStreamWriter writer, QName qname, PrefixFactory prefixFactory) { // NOTE: Here it is assumed that we do not serialize using default // namespace declarations and therefore that writer.getPrefix will // never return "" try { String namespaceURI = qname.getNamespaceURI(); String localPart = qname.getLocalPart(); if (namespaceURI == null || namespaceURI.equals("")) { return localPart; } else { String prefix = writer.getPrefix(namespaceURI); if (prefix == null) { prefix = prefixFactory.getPrefix(namespaceURI); writer.writeNamespace(prefix, namespaceURI); } return prefix + ":" + localPart; } } catch (XMLStreamException e) { throw new RuntimeException(e); } } }




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