Examples of org.exist.storage.serializers.Serializer

org.exist.storage.serializers.Serializer
Serializer base class, used to serialize a document or document fragment back to XML. A serializer may be obtained by calling DBBroker.getSerializer(). The class basically offers two overloaded methods: serialize() and toSAX(). serialize() returns the XML as a string, while toSAX() generates a stream of SAX events. The stream of SAX events is passed to the ContentHandler set by setContentHandler(). Internally, both types of methods pass events to a {@link org.exist.util.serializer.Receiver}. Subclasses thus have to implement the various serializeToReceiver() methods. Output can be configured through properties. Property keys are defined in classes {@link javax.xml.transform.OutputKeys} and {@link org.exist.storage.serializers.EXistOutputKeys} @author Wolfgang Meier

    buf.append(") ");
    
    while(i.hasNext()) {
      final Item next = i.nextItem();
      if( Type.subTypeOf( next.getType(), Type.NODE ) ) {
        final Serializer serializer = context.getBroker().getSerializer();
        serializer.reset();
        try {
          buf.append( serializer.serialize( (NodeValue)next ) );
        } 
        catch( final SAXException e ) {
          throw( new XPathException(this, "An exception occurred while serializing node to log: " + e.getMessage(), e ) );
        }
      } else {

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            factory.setURIResolver(new DatabaseResolver(broker, stylesheet));
            try {
                final TemplatesHandler handler = factory.newTemplatesHandler();
                handler.startDocument();


                final Serializer serializer = broker.getSerializer();
                serializer.reset();
                serializer.setSAXHandlers(handler, null);
                serializer.toSAX(stylesheet);


                handler.endDocument();       
                return handler.getTemplates();


            } catch (final SAXException e) {

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// DocumentImpl document = (DocumentImpl) broker.getDocument(name);
            final DocumentImpl document = broker.getResource(name, Permission.READ);
            if (document == null)
                {throw new RemoteException("resource " + name + " not found");}


            final Serializer serializer = broker.getSerializer();
            serializer.reset();
            serializer.setProperties(outputProperties);
            return serializer.serialize(document);
            
            //      if (xml != null)
            //        try {
            //          return xml.getBytes("UTF-8");
            //        } catch (java.io.UnsupportedEncodingException e) {

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                        "index " + start + " out of bounds (" + seq.getItemCount() + ")");}
            if (start + howmany > seq.getItemCount() || howmany == 0)
                {howmany = seq.getItemCount() - start + 1;}
            
            final String xml[] = new String[howmany];
            final Serializer serializer = broker.getSerializer();
            serializer.reset();
            serializer.setProperty(OutputKeys.INDENT, indent ? "yes" : "no");
            serializer.setProperty(EXistOutputKeys.EXPAND_XINCLUDES, xinclude ? "yes" : "no");
            serializer.setProperty(EXistOutputKeys.HIGHLIGHT_MATCHES, highlight);
            
            Item item;
            int j = 0;
            for (int i = --start; i < start + howmany; i++, j++) {
                item = seq.itemAt(i);
                if (item == null)
                    {continue;}
                if (item.getType() == Type.ELEMENT) {
                    final NodeValue node = (NodeValue) item;
                    xml[j] = serializer.serialize(node);
                } else {
                    xml[j] = item.getStringValue();
                }
            }
            return xml;

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                if (start < 0 || start > hitsByDoc.getLength())
                    {throw new RemoteException(
                            "index " + start + "out of bounds (" + hitsByDoc.getLength() + ")");}
                if (start + howmany >= hitsByDoc.getLength())
                    {howmany = hitsByDoc.getLength() - start;}
                final Serializer serializer = broker.getSerializer();
                serializer.reset();
                serializer.setProperty(OutputKeys.INDENT, indent ? "yes" : "no");
                serializer.setProperty(EXistOutputKeys.EXPAND_XINCLUDES, xinclude ? "yes" : "no");
                serializer.setProperty(EXistOutputKeys.HIGHLIGHT_MATCHES, highlight);
                
                xml = new String[howmany];
                int j=0;
                for (int i = start; i < start + howmany; i++) {
                    final NodeProxy proxy = ((NodeSet) hitsByDoc).get(i);
                    if (proxy == null)
                        {throw new RuntimeException("not found: " + start);}
                    xml[j] = serializer.serialize(proxy);
                    j++; // update count number of results
                }
            } else
                {throw new RemoteException("result set is not a node list");}
            return xml;

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    private String queryResult2String(DBBroker broker, Sequence seq, int index) throws SAXException, XPathException {
        Properties props = new Properties();
        props.setProperty(OutputKeys.INDENT, "no");
        props.setProperty(EXistOutputKeys.HIGHLIGHT_MATCHES, "elements");
        Serializer serializer = broker.getSerializer();
        serializer.reset();
        serializer.setProperties(props);
        return serializer.serialize((NodeValue) seq.itemAt(index));
    }

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                context.declareVariable("filename", generatedFiles[i].getName());
                context.declareVariable("count", new Integer(i));
                Sequence results = service.execute(compiled, Sequence.EMPTY_SEQUENCE);


                Serializer serializer = broker.getSerializer();
                serializer.reset();
                Writer out = new OutputStreamWriter(new FileOutputStream(generatedFiles[i]), "UTF-8");
                SAXSerializer sax = new SAXSerializer(out, outputProps);
                serializer.setSAXHandlers(sax, sax);
                for (SequenceIterator iter = results.iterate(); iter.hasNext(); ) {
                    Item item = iter.nextItem();
                    if (!Type.subTypeOf(item.getType(), Type.NODE))
                        continue;
                    serializer.toSAX((NodeValue) item);
                }
                out.close();
            }
        } catch (Exception e) {
            e.printStackTrace();

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    }
    assert item instanceof NodeValue;
    DBBroker broker = null;
    try {
      broker = db.acquireBroker();
      Serializer serializer = broker.getSerializer();
      if (item instanceof NodeProxy) {
        NodeProxy proxy = (NodeProxy) item;
        if (proxy.isDocument()) {
          return serializer.serialize(proxy.getDocument());
        }
      }
      return serializer.serialize((NodeValue) item);
    } catch (SAXException e) {
      throw new DatabaseException(e);
    } finally {
      db.releaseBroker(broker);
    }

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        final SerializerPool serializerPool = SerializerPool.getInstance();
        try {
            broker = getBrokerPool().get(brokerPool.getSubject());
            
            final Serializer serializer = broker.getSerializer();
            serializer.reset();
            
            sax = (SAXSerializer) serializerPool.borrowObject(SAXSerializer.class);
          
            final Writer writer = new OutputStreamWriter(response.getOutputStream(), serializationProperties.get(SerializationProperty.ENCODING));
            final Properties outputProperties = serializationPropertiesToProperties(serializationProperties);
            sax.setOutput(writer, outputProperties);
  
            serializer.setProperties(outputProperties);
            serializer.setSAXHandlers(sax, sax);
  
            serializer.toSAX(((SequenceAdapter)result).getExistSequence());
  
            writer.flush();
            writer.close();
          
        } catch(IOException ioe) {

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    private String queryResult2String(DBBroker broker, Sequence seq) throws SAXException, XPathException {
        Properties props = new Properties();
        props.setProperty(OutputKeys.INDENT, "no");
        props.setProperty(EXistOutputKeys.HIGHLIGHT_MATCHES, "elements");
        Serializer serializer = broker.getSerializer();
        serializer.reset();
        serializer.setProperties(props);
        return serializer.serialize((NodeValue) seq.itemAt(0));
    }

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