domserializerimpl.java

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     */
    public String getNewLine() {
        return serializer._format.getLineSeparator();
    }


    /**
     *  When the application provides a filter, the serializer will call out
     * to the filter before serializing each Node. Attribute nodes are never
     * passed to the filter. The filter implementation can choose to remove
     * the node from the stream or to terminate the serialization early.
     */
    public LSSerializerFilter getFilter(){
        return serializer.fDOMFilter;
    }
    /**
     *  When the application provides a filter, the serializer will call out
     * to the filter before serializing each Node. Attribute nodes are never
     * passed to the filter. The filter implementation can choose to remove
     * the node from the stream or to terminate the serialization early.
     */
    public void setFilter(LSSerializerFilter filter){
        serializer.fDOMFilter = filter;
    }

    // this initializes a newly-created serializer
    private void initSerializer(XMLSerializer ser) {
        ser.fNSBinder = new NamespaceSupport();
        ser.fLocalNSBinder = new NamespaceSupport();
        ser.fSymbolTable = new SymbolTable();	
    }

    // copies all settings that could have been modified
    // by calls to LSSerializer methods from one serializer to another.
    // IMPORTANT:  if new methods are implemented or more settings of
    // the serializer are made alterable, this must be
    // reflected in this method!
    private void copySettings(XMLSerializer src, XMLSerializer dest) {
        dest.fDOMErrorHandler = fErrorHandler;
        dest._format.setEncoding(src._format.getEncoding());
        dest._format.setLineSeparator(src._format.getLineSeparator());
        dest.fDOMFilter = src.fDOMFilter;
    }//copysettings

    /**
      *  Serialize the specified node as described above in the general
      * description of the <code>LSSerializer</code> interface. The output
      * is written to the supplied <code>LSOutput</code>.
      * <br> When writing to a <code>LSOutput</code>, the encoding is found by
      * looking at the encoding information that is reachable through the
      * <code>LSOutput</code> and the item to be written (or its owner
      * document) in this order:
      * <ol>
      * <li> <code>LSOutput.encoding</code>,
      * </li>
      * <li>
      * <code>Document.actualEncoding</code>,
      * </li>
      * <li>
      * <code>Document.xmlEncoding</code>.
      * </li>
      * </ol>
      * <br> If no encoding is reachable through the above properties, a
      * default encoding of "UTF-8" will be used.
      * <br> If the specified encoding is not supported an
      * "unsupported-encoding" error is raised.
      * <br> If no output is specified in the <code>LSOutput</code>, a
      * "no-output-specified" error is raised.
      * @param node  The node to serialize.
      * @param destination The destination for the serialized DOM.
      * @return  Returns <code>true</code> if <code>node</code> was
      *   successfully serialized and <code>false</code> in case the node
      *   couldn't be serialized.
      */
    public boolean write(Node node, LSOutput destination) throws LSException{

        if (node == null)
            return false;
            
        Method getVersion = null;
        XMLSerializer ser = null;
        String ver = null;
        Document fDocument =(node.getNodeType() == Node.DOCUMENT_NODE)
                ? (Document) node
                : node.getOwnerDocument();
        // this should run under JDK 1.1.8...
        try {
            getVersion = fDocument.getClass().getMethod("getXmlVersion", new Class[] {});
            if (getVersion != null) {
                ver = (String) getVersion.invoke(fDocument, (Object[]) null);
            }
        } catch (Exception e) {
            //no way to test the version...
            //ignore the exception
        }
        //determine which serializer to use:
        if (ver != null && ver.equals("1.1")) {
            if (xml11Serializer == null) {
                xml11Serializer = new XML11Serializer();
                initSerializer(xml11Serializer);
            }
            //copy setting from "main" serializer to XML 1.1 serializer
            copySettings(serializer, xml11Serializer);
            ser = xml11Serializer;
        } else {
            ser = serializer;
        }

        String encoding = null;
        if ((encoding = destination.getEncoding()) == null) {
            try {
                Method getEncoding =
                    fDocument.getClass().getMethod("getInputEncoding", new Class[] {});
                if (getEncoding != null) {
                    encoding = (String) getEncoding.invoke(fDocument, (Object[]) null);
                }
            } catch (Exception e) {
                // ignore the exception
            }
            if (encoding == null) {
                try {
                    Method getEncoding =
                        fDocument.getClass().getMethod("getXmlEncoding", new Class[] {});
                    if (getEncoding != null) {
                        encoding = (String) getEncoding.invoke(fDocument, (Object[]) null);
                    }
                } catch (Exception e) {
                    // ignore the exception
                }
                if (encoding == null) {
                    encoding = "UTF-8";
                }
            }
        }
        try {
            prepareForSerialization(ser, node);
            ser._format.setEncoding(encoding);
            OutputStream outputStream = destination.getByteStream();
            Writer writer = destination.getCharacterStream();
            String uri =  destination.getSystemId();
            if (writer == null) {
                if (outputStream == null) {
                    if (uri == null) {
                        String msg = DOMMessageFormatter.formatMessage(
                            DOMMessageFormatter.SERIALIZER_DOMAIN, 
                            "no-output-specified", null);
                        if (ser.fDOMErrorHandler != null) {
                            DOMErrorImpl error = new DOMErrorImpl();
                            error.fType = "no-output-specified";
                            error.fMessage = msg;
                            error.fSeverity = DOMError.SEVERITY_FATAL_ERROR;
                            ser.fDOMErrorHandler.handleError(error);
                        }
                        throw new LSException(LSException.SERIALIZE_ERR, msg);
                    }
                    else {
                        // URI was specified. Handle relative URIs.
                        String expanded = XMLEntityManager.expandSystemId(uri, null, true);
                        URL url = new URL(expanded != null ? expanded : uri);
                        OutputStream out = null;
                        String protocol = url.getProtocol();
                        String host = url.getHost();
                        // Use FileOutputStream if this URI is for a local file.
                        if (protocol.equals("file") 
                            && (host == null || host.length() == 0 || host.equals("localhost"))) {
                            out = new FileOutputStream(getPathWithoutEscapes(url.getFile()));
                        }
                        // Try to write to some other kind of URI. Some protocols
                        // won't support this, though HTTP should work.
                        else {
                            URLConnection urlCon = url.openConnection();
                            urlCon.setDoInput(false);
                            urlCon.setDoOutput(true);
                            urlCon.setUseCaches(false); // Enable tunneling.
                            if (urlCon instanceof HttpURLConnection) {
                                // The DOM L3 LS CR says if we are writing to an HTTP URI
                                // it is to be done with an HTTP PUT. 
                                HttpURLConnection httpCon = (HttpURLConnection) urlCon;
                                httpCon.setRequestMethod("PUT");
                            }
                            out = urlCon.getOutputStream();
                        }
                        ser.setOutputByteStream(out);
                    }
                }
                else {
                    // byte stream was specified
                    ser.setOutputByteStream(outputStream);
                }
            }
            else {
                // character stream is specified
                ser.setOutputCharStream(writer); 
            }

            if (node.getNodeType() == Node.DOCUMENT_NODE)
                ser.serialize((Document) node);
            else if (node.getNodeType() == Node.DOCUMENT_FRAGMENT_NODE)
                ser.serialize((DocumentFragment) node);
            else if (node.getNodeType() == Node.ELEMENT_NODE)
                ser.serialize((Element) node);
            else if (node.getNodeType() == Node.TEXT_NODE || 
                    node.getNodeType() == Node.COMMENT_NODE ||
                    node.getNodeType() == Node.ENTITY_REFERENCE_NODE ||
                    node.getNodeType() == Node.CDATA_SECTION_NODE ||
                    node.getNodeType() == Node.PROCESSING_INSTRUCTION_NODE ) {
                ser.serialize(node);
            }
            else
                return false;
        } catch( UnsupportedEncodingException ue) {
            if (ser.fDOMErrorHandler != null) {
                DOMErrorImpl error = new DOMErrorImpl();
                error.fException = ue;
				error.fType = "unsupported-encoding";
                error.fMessage = ue.getMessage();
				error.fSeverity = DOMError.SEVERITY_FATAL_ERROR;
                ser.fDOMErrorHandler.handleError(error);
			}
            throw new LSException(LSException.SERIALIZE_ERR, 
                DOMMessageFormatter.formatMessage(
                    DOMMessageFormatter.SERIALIZER_DOMAIN, 
                    "unsupported-encoding", null));			
			//return false;
        } catch (LSException lse) {
            // Rethrow LSException.
            throw lse;
        } catch (RuntimeException e) {
            if (e == DOMNormalizer.abort){
                // stopped at user request
                return false;
            }
            throw new LSException(LSException.SERIALIZE_ERR, e.toString());            
        } catch (Exception e) {
            if (ser.fDOMErrorHandler != null) {
                DOMErrorImpl error = new DOMErrorImpl();
                error.fException = e;
                error.fMessage = e.getMessage();
                error.fSeverity = DOMError.SEVERITY_ERROR;
                ser.fDOMErrorHandler.handleError(error);

            }   
            e.printStackTrace();       
            throw new LSException(LSException.SERIALIZE_ERR, e.toString());
        }
        return true;

    } //write

    /**
      *  Serialize the specified node as described above in the general
      * description of the <code>LSSerializer</code> interface. The output
      * is written to the supplied URI.
      * <br> When writing to a URI, the encoding is found by looking at the
      * encoding information that is reachable through the item to be written
      * (or its owner document) in this order:
      * <ol>
      * <li>
      * <code>Document.inputEncoding</code>,
      * </li>
      * <li>
      * <code>Document.xmlEncoding</code>.
      * </li>
      * </ol>
      * <br> If no encoding is reachable through the above properties, a
      * default encoding of "UTF-8" will be used.
      * <br> If the specified encoding is not supported an
      * "unsupported-encoding" error is raised.
      * @param node  The node to serialize.
      * @param URI The URI to write to.
      * @return  Returns <code>true</code> if <code>node</code> was
      *   successfully serialized and <code>false</code> in case the node
      *   couldn't be serialized.
      */
    public boolean writeToURI(Node node, String URI) throws LSException{
        if (node == null){
            return false;
        }

        Method getXmlVersion = null;
        XMLSerializer ser = null;
        String ver = null;
        String encoding = null;

        Document fDocument =(node.getNodeType() == Node.DOCUMENT_NODE)
                ? (Document) node
                : node.getOwnerDocument();
        // this should run under JDK 1.1.8...
        try {
            getXmlVersion =
                fDocument.getClass().getMethod("getXmlVersion", new Class[] {});
            if (getXmlVersion != null) {
                ver = (String) getXmlVersion.invoke(fDocument, (Object[]) null);
            }
        } catch (Exception e) {
            // no way to test the version...
            // ignore the exception
        }
        if (ver != null && ver.equals("1.1")) {
            if (xml11Serializer == null) {
                xml11Serializer = new XML11Serializer();
                initSerializer(xml11Serializer);
            }