Java Code Examples for javax.xml.stream.events.XMLEvent#isEndDocument()

@Override
public XMLEvent nextEvent() throws XMLStreamException
{
    if (mState == STATE_END_OF_INPUT) {
        throwEndOfInput();
    } else if (mState == STATE_INITIAL) {
        mState = STATE_CONTENT;
        return createStartDocumentEvent();
    }
    if (mPeekedEvent != null) {
        XMLEvent evt = mPeekedEvent;
        mPeekedEvent = null;
        if (evt.isEndDocument()) {
            updateStateEndDocument();
        }
        return evt;
    }
    return createNextEvent(true, mReader.next());
}
 

/**
 * This is used to read the next node from the document. This will
 * scan through the document, ignoring any comments to find the
 * next relevant XML event to acquire. Typically events will be
 * the start and end of an element, as well as any text nodes.
 * 
 * @return this returns the next event taken from the document 
 */
private EventNode read() throws Exception {
   XMLEvent event = reader.nextEvent();
   
   if(!event.isEndDocument()) {
      if(event.isStartElement()) {
         return start(event);
      } 
      if(event.isCharacters()) {
         return text(event);
      } 
      if(event.isEndElement()) {
         return end();
      }
      return read();
   }
   return null;
}
 

private XMLEvent consumeUntil(XMLEventReader reader, XMLEventWriter writer, EventCondition condition) throws XMLStreamException {
    XMLEvent xmlEvent = null;

    while (reader.hasNext() && xmlEvent == null) {
        XMLEvent event = (XMLEvent)reader.next();
        if (event.isEndDocument()) {
            break;
        }
        if (condition.evaluateEvent(event)) {
            xmlEvent = event;
        } else {
            if (writer != null) {
                writer.add(event);
            }
        }
    }

    return xmlEvent;
}
 

@Override
public List<? extends XMLEvent> apply(DataBuffer dataBuffer) {
	try {
		this.streamReader.getInputFeeder().feedInput(dataBuffer.asByteBuffer());
		List<XMLEvent> events = new ArrayList<>();
		while (true) {
			if (this.streamReader.next() == AsyncXMLStreamReader.EVENT_INCOMPLETE) {
				// no more events with what currently has been fed to the reader
				break;
			}
			else {
				XMLEvent event = this.eventAllocator.allocate(this.streamReader);
				events.add(event);
				if (event.isEndDocument()) {
					break;
				}
			}
		}
		return events;
	}
	catch (XMLStreamException ex) {
		throw Exceptions.propagate(ex);
	}
	finally {
		DataBufferUtils.release(dataBuffer);
	}
}
 

public SkipRootElementXMLEventReader(XMLEventReader parent)
		throws XMLStreamException {
	events = new ArrayList<XMLEvent>();
	int openElement = 0;

	while (parent.hasNext()) {
		XMLEvent next = parent.nextEvent();

		if (next.isStartDocument()) {
			events.add(next);
		} else if (next.isEndDocument()) {
			events.add(next);
		} else if (next.isStartElement()) {
			if (openElement > 0) {
				events.add(next);
			}
			openElement++;
		} else if (next.isEndElement()) {
			openElement--;
			if (openElement > 0) {
				events.add(next);
			}
		} else {
			if (openElement > 0) {
				events.add(next);
			}
		}

	}

}
 

@Override
public Entry<String, NotificationConfiguration> unmarshall(StaxUnmarshallerContext context) throws Exception {
    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    if (context.isStartOfDocument()) {
        targetDepth += 1;
    }

    String id = null;
    List<String> events = new ArrayList<String>();
    Filter filter = null;
    String functionArn = null;
    String invocationRole = null;

    while (true) {
        XMLEvent xmlEvent = context.nextEvent();
        if (xmlEvent.isEndDocument()) {
            return createLambdaConfig(id, events, functionArn, invocationRole, filter);
        }

        if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
            if (context.testExpression("Id", targetDepth)) {
                id = StringStaxUnmarshaller.getInstance().unmarshall(context);
            } else if (context.testExpression("Event", targetDepth)) {
                events.add(StringStaxUnmarshaller.getInstance().unmarshall(context));
            } else if (context.testExpression("Filter", targetDepth)) {
                filter = FilterStaxUnmarshaller.getInstance().unmarshall(context);
            } else if (context.testExpression("CloudFunction", targetDepth)) {
                functionArn = StringStaxUnmarshaller.getInstance().unmarshall(context);
            } else if (context.testExpression("InvocationRole", targetDepth)) {
                invocationRole = StringStaxUnmarshaller.getInstance().unmarshall(context);
            }
        } else if (xmlEvent.isEndElement()) {
            if (context.getCurrentDepth() < originalDepth) {
                return createLambdaConfig(id, events, functionArn, invocationRole, filter);
            }
        }
    }
}
 

@Override
public FilterRule unmarshall(StaxUnmarshallerContext context) throws Exception {
    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    if (context.isStartOfDocument()) {
        targetDepth += 1;
    }

    FilterRule filter = new FilterRule();

    while (true) {
        XMLEvent xmlEvent = context.nextEvent();
        if (xmlEvent.isEndDocument()) {
            return filter;
        }
        if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
            if (context.testExpression("Name", targetDepth)) {
                filter.setName(StringStaxUnmarshaller.getInstance().unmarshall(context));
            } else if (context.testExpression("Value", targetDepth)) {
                filter.setValue(StringStaxUnmarshaller.getInstance().unmarshall(context));
            }
        } else if (xmlEvent.isEndElement()) {
            if (context.getCurrentDepth() < originalDepth) {
                return filter;
            }
        }
    }

}
 

@Override
public S3KeyFilter unmarshall(StaxUnmarshallerContext context) throws Exception {
    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    if (context.isStartOfDocument()) {
        targetDepth += 1;
    }

    S3KeyFilter filter = new S3KeyFilter();

    while (true) {
        XMLEvent xmlEvent = context.nextEvent();
        if (xmlEvent.isEndDocument()) {
            return filter;
        }

        if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
            if (context.testExpression("FilterRule", targetDepth)) {
                filter.addFilterRule(FilterRuleStaxUnmarshaller.getInstance().unmarshall(context));
            }
        } else if (xmlEvent.isEndElement()) {
            if (context.getCurrentDepth() < originalDepth) {
                return filter;
            }
        }
    }
}
 

/**
 * Id (aka configuration name) isn't modeled on the actual {@link NotificationConfiguration}
 * class but as the key name in the map of configurations in
 * {@link BucketNotificationConfiguration}
 */
@Override
public Entry<String, NotificationConfiguration> unmarshall(StaxUnmarshallerContext context) throws Exception {
    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    if (context.isStartOfDocument()) {
        targetDepth += 1;
    }

    T topicConfig = createConfiguration();
    String id = null;

    while (true) {
        XMLEvent xmlEvent = context.nextEvent();
        if (xmlEvent.isEndDocument()) {
            return new SimpleEntry<String, NotificationConfiguration>(id, topicConfig);
        }

        if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
            if (handleXmlEvent(topicConfig, context, targetDepth)) {
                // Do nothing, subclass has handled it
            } else if (context.testExpression("Id", targetDepth)) {
                id = StringStaxUnmarshaller.getInstance().unmarshall(context);
            } else if (context.testExpression("Event", targetDepth)) {
                topicConfig.addEvent(StringStaxUnmarshaller.getInstance().unmarshall(context));
            } else if (context.testExpression("Filter", targetDepth)) {
                topicConfig.setFilter(FilterStaxUnmarshaller.getInstance().unmarshall(context));
            }
        } else if (xmlEvent.isEndElement()) {
            if (context.getCurrentDepth() < originalDepth) {
                return new SimpleEntry<String, NotificationConfiguration>(id, topicConfig);
            }
        }
    }
}
 

@Override
public Publisher<? extends XMLEvent> apply(DataBuffer dataBuffer) {
	try {
		this.streamReader.getInputFeeder().feedInput(dataBuffer.asByteBuffer());
		List<XMLEvent> events = new ArrayList<>();
		while (true) {
			if (this.streamReader.next() == AsyncXMLStreamReader.EVENT_INCOMPLETE) {
				// no more events with what currently has been fed to the reader
				break;
			}
			else {
				XMLEvent event = this.eventAllocator.allocate(this.streamReader);
				events.add(event);
				if (event.isEndDocument()) {
					break;
				}
			}
		}
		return Flux.fromIterable(events);
	}
	catch (XMLStreamException ex) {
		return Mono.error(ex);
	}
	finally {
		DataBufferUtils.release(dataBuffer);
	}
}
 

@Override
public final String getElementText() throws XMLStreamException {
	XMLEvent event = this.previousEvent;
	if (event == null) {
		throw new XMLStreamException("Must be on START_ELEMENT to read next text, element was null");
	}
	if (!event.isStartElement()) {
		throw new XMLStreamException("Must be on START_ELEMENT to read next text", event.getLocation());
	}

	final StringBuilder text = new StringBuilder();
	while (!event.isEndDocument()) {
		switch (event.getEventType()) {
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA: {
				final Characters characters = event.asCharacters();
				text.append(characters.getData());
				break;
			}
			case XMLStreamConstants.ENTITY_REFERENCE: {
				final EntityReference entityReference = (EntityReference)event;
				final EntityDeclaration declaration = entityReference.getDeclaration();
				text.append(declaration.getReplacementText());
				break;
			}
			case XMLStreamConstants.COMMENT:
			case XMLStreamConstants.PROCESSING_INSTRUCTION: {
				//Ignore
				break;
			}
			default: {
				throw new XMLStreamException("Unexpected event type '" + XMLStreamConstantsUtils.getEventName(event.getEventType()) + "' encountered. Found event: " + event, event.getLocation());
			}
		}

		event = this.nextEvent();
	}

	return text.toString();
}
 

@Override
public final String getElementText() throws XMLStreamException {
	XMLEvent event = this.previousEvent;
	if (event == null) {
		throw new XMLStreamException("Must be on START_ELEMENT to read next text, element was null");
	}
	if (!event.isStartElement()) {
		throw new XMLStreamException("Must be on START_ELEMENT to read next text", event.getLocation());
	}

	final StringBuilder text = new StringBuilder();
	while (!event.isEndDocument()) {
		switch (event.getEventType()) {
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA: {
				final Characters characters = event.asCharacters();
				text.append(characters.getData());
				break;
			}
			case XMLStreamConstants.ENTITY_REFERENCE: {
				final EntityReference entityReference = (EntityReference)event;
				final EntityDeclaration declaration = entityReference.getDeclaration();
				text.append(declaration.getReplacementText());
				break;
			}
			case XMLStreamConstants.COMMENT:
			case XMLStreamConstants.PROCESSING_INSTRUCTION: {
				//Ignore
				break;
			}
			default: {
				throw new XMLStreamException("Unexpected event type '" + XMLStreamConstantsUtils.getEventName(event.getEventType()) + "' encountered. Found event: " + event, event.getLocation());
			}
		}

		event = this.nextEvent();
	}

	return text.toString();
}
 

private XmlNode readNext(final StartElement startElement) throws XMLStreamException, IOException {
    // Parse everything until we encounter the end element
    final StringBuilder content = new StringBuilder();
    final Map<String, XmlNode> childNodes = new LinkedHashMap<>();

    while (xmlEventReader.hasNext()) {
        final XMLEvent xmlEvent = xmlEventReader.nextEvent();

        if (xmlEvent.isEndDocument()) {
            throw new EOFException("Expected to encounter End-of-Element tag for start tag '" + startElement.getName() + "'");
        }

        if (xmlEvent.isEndElement()) {
            break;
        }

        if (xmlEvent.isCharacters()) {
            final Characters characters = xmlEvent.asCharacters();
            if (!characters.isWhiteSpace()) {
                content.append(characters.getData());
            }
        }

        if (xmlEvent.isStartElement()) {
            final StartElement childStartElement = xmlEvent.asStartElement();
            final XmlNode childNode = readNext(childStartElement);
            final String childName = childStartElement.getName().getLocalPart();

            final XmlNode existingNode = childNodes.get(childName);
            if (existingNode == null) {
                childNodes.put(childName, childNode);
            } else if (existingNode.getNodeType() == XmlNodeType.ARRAY) {
                ((XmlArrayNode) existingNode).addElement(childNode);
            } else {
                final XmlArrayNode arrayNode = new XmlArrayNode(childStartElement.getName().getLocalPart());
                arrayNode.addElement(existingNode);
                arrayNode.addElement(childNode);
                childNodes.put(childName, arrayNode);
            }
        }
    }

    final String nodeName = startElement.getName().getLocalPart();
    if (childNodes.isEmpty()) {
        return new XmlTextNode(nodeName, content.toString().trim());
    } else {
        return new XmlContainerNode(nodeName, childNodes);
    }
}
 

@Override
protected void parseInternal() throws SAXException, XMLStreamException {
	boolean documentStarted = false;
	boolean documentEnded = false;
	int elementDepth = 0;
	while (this.reader.hasNext() && elementDepth >= 0) {
		XMLEvent event = this.reader.nextEvent();
		if (!event.isStartDocument() && !event.isEndDocument() && !documentStarted) {
			handleStartDocument(event);
			documentStarted = true;
		}
		switch (event.getEventType()) {
			case XMLStreamConstants.START_DOCUMENT:
				handleStartDocument(event);
				documentStarted = true;
				break;
			case XMLStreamConstants.START_ELEMENT:
				elementDepth++;
				handleStartElement(event.asStartElement());
				break;
			case XMLStreamConstants.END_ELEMENT:
				elementDepth--;
				if (elementDepth >= 0) {
					handleEndElement(event.asEndElement());
				}
				break;
			case XMLStreamConstants.PROCESSING_INSTRUCTION:
				handleProcessingInstruction((ProcessingInstruction) event);
				break;
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA:
				handleCharacters(event.asCharacters());
				break;
			case XMLStreamConstants.END_DOCUMENT:
				handleEndDocument();
				documentEnded = true;
				break;
			case XMLStreamConstants.NOTATION_DECLARATION:
				handleNotationDeclaration((NotationDeclaration) event);
				break;
			case XMLStreamConstants.ENTITY_DECLARATION:
				handleEntityDeclaration((EntityDeclaration) event);
				break;
			case XMLStreamConstants.COMMENT:
				handleComment((Comment) event);
				break;
			case XMLStreamConstants.DTD:
				handleDtd((DTD) event);
				break;
			case XMLStreamConstants.ENTITY_REFERENCE:
				handleEntityReference((EntityReference) event);
				break;
		}
	}
	if (documentStarted && !documentEnded) {
		handleEndDocument();
	}

}
 

/**
 * Read all {@link javax.xml.stream.events.XMLEvent}'s from specified file and write them onto the {@link javax.xml.stream.XMLEventWriter}
 *
 * @param file
 *            File to import
 * @param skipRoot
 *            Skip-root flag
 * @param writer
 *            Destenation writer
 * @throws XMLStreamException
 *             On event reading/writing error.
 * @throws FileNotFoundException
 *             if the reading file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.
 */
private void importFile(File file, boolean skipRoot, XMLEventWriter writer, Properties metadata) throws XMLStreamException, IOException {
	logger.debug("Appending file " + file);
	metadata.setProperty(file.getPath(), makeHash(file));

	XMLEventReader reader = null;

	try {
		reader = inputFactory.createXMLEventReader(new FileReader(file));

		QName firstTagQName = null;

		while (reader.hasNext()) {
			XMLEvent event = reader.nextEvent();

			// skip start and end of document.
			if (event.isStartDocument() || event.isEndDocument()) {
				continue;
			}
			// skip all comments.
			if (event instanceof Comment) {
				continue;
			}
			// skip white-spaces and all ignoreable white-spaces.
			if (event.isCharacters()) {
				if (event.asCharacters().isWhiteSpace() || event.asCharacters().isIgnorableWhiteSpace()) {
					continue;
				}
			}

			// modify root-tag of imported file.
			if (firstTagQName == null && event.isStartElement()) {
				firstTagQName = event.asStartElement().getName();

				if (skipRoot) {
					continue;
				}
				else {
					StartElement old = event.asStartElement();

					event = eventFactory.createStartElement(old.getName(), old.getAttributes(), null);
				}
			}

			// if root was skipped - skip root end too.
			if (event.isEndElement() && skipRoot && event.asEndElement().getName().equals(firstTagQName)) {
				continue;
			}

			// finally - write tag
			writer.add(event);
		}
	}
	finally {
		if (reader != null) {
			try {
				reader.close();
			}
			catch (Exception ignored) {
			}
		}
	}
}
 

@Override
protected void parseInternal() throws SAXException, XMLStreamException {
	boolean documentStarted = false;
	boolean documentEnded = false;
	int elementDepth = 0;
	while (this.reader.hasNext() && elementDepth >= 0) {
		XMLEvent event = this.reader.nextEvent();
		if (!event.isStartDocument() && !event.isEndDocument() && !documentStarted) {
			handleStartDocument(event);
			documentStarted = true;
		}
		switch (event.getEventType()) {
			case XMLStreamConstants.START_DOCUMENT:
				handleStartDocument(event);
				documentStarted = true;
				break;
			case XMLStreamConstants.START_ELEMENT:
				elementDepth++;
				handleStartElement(event.asStartElement());
				break;
			case XMLStreamConstants.END_ELEMENT:
				elementDepth--;
				if (elementDepth >= 0) {
					handleEndElement(event.asEndElement());
				}
				break;
			case XMLStreamConstants.PROCESSING_INSTRUCTION:
				handleProcessingInstruction((ProcessingInstruction) event);
				break;
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA:
				handleCharacters(event.asCharacters());
				break;
			case XMLStreamConstants.END_DOCUMENT:
				handleEndDocument();
				documentEnded = true;
				break;
			case XMLStreamConstants.NOTATION_DECLARATION:
				handleNotationDeclaration((NotationDeclaration) event);
				break;
			case XMLStreamConstants.ENTITY_DECLARATION:
				handleEntityDeclaration((EntityDeclaration) event);
				break;
			case XMLStreamConstants.COMMENT:
				handleComment((Comment) event);
				break;
			case XMLStreamConstants.DTD:
				handleDtd((DTD) event);
				break;
			case XMLStreamConstants.ENTITY_REFERENCE:
				handleEntityReference((EntityReference) event);
				break;
		}
	}
	if (documentStarted && !documentEnded) {
		handleEndDocument();
	}

}
 

@Override
protected void parseInternal() throws SAXException, XMLStreamException {
	boolean documentStarted = false;
	boolean documentEnded = false;
	int elementDepth = 0;
	while (this.reader.hasNext() && elementDepth >= 0) {
		XMLEvent event = this.reader.nextEvent();
		if (!event.isStartDocument() && !event.isEndDocument() && !documentStarted) {
			handleStartDocument(event);
			documentStarted = true;
		}
		switch (event.getEventType()) {
			case XMLStreamConstants.START_DOCUMENT:
				handleStartDocument(event);
				documentStarted = true;
				break;
			case XMLStreamConstants.START_ELEMENT:
				elementDepth++;
				handleStartElement(event.asStartElement());
				break;
			case XMLStreamConstants.END_ELEMENT:
				elementDepth--;
				if (elementDepth >= 0) {
					handleEndElement(event.asEndElement());
				}
				break;
			case XMLStreamConstants.PROCESSING_INSTRUCTION:
				handleProcessingInstruction((ProcessingInstruction) event);
				break;
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA:
				handleCharacters(event.asCharacters());
				break;
			case XMLStreamConstants.END_DOCUMENT:
				handleEndDocument();
				documentEnded = true;
				break;
			case XMLStreamConstants.NOTATION_DECLARATION:
				handleNotationDeclaration((NotationDeclaration) event);
				break;
			case XMLStreamConstants.ENTITY_DECLARATION:
				handleEntityDeclaration((EntityDeclaration) event);
				break;
			case XMLStreamConstants.COMMENT:
				handleComment((Comment) event);
				break;
			case XMLStreamConstants.DTD:
				handleDtd((DTD) event);
				break;
			case XMLStreamConstants.ENTITY_REFERENCE:
				handleEntityReference((EntityReference) event);
				break;
		}
	}
	if (documentStarted && !documentEnded) {
		handleEndDocument();
	}

}
 

public void add(XMLEvent event) throws XMLStreamException {
	if (event.isStartDocument()) {
		streamWriter.writeStartDocument();
	} else if (event.isStartElement()) {
		StartElement element = event.asStartElement();
		QName elQName = element.getName();
		if (elQName.getPrefix().length() > 0
				&& elQName.getNamespaceURI().length() > 0)
			streamWriter.writeStartElement(elQName.getPrefix(), elQName
					.getLocalPart(), elQName.getNamespaceURI());
		else if (elQName.getNamespaceURI().length() > 0)
			streamWriter.writeStartElement(elQName.getNamespaceURI(),
					elQName.getLocalPart());
		else
			streamWriter.writeStartElement(elQName.getLocalPart());

		// Add element namespaces
		Iterator namespaces = element.getNamespaces();
		while (namespaces.hasNext()) {
			Namespace ns = (Namespace) namespaces.next();
			String prefix = ns.getPrefix();
			String nsURI = ns.getNamespaceURI();
			streamWriter.writeNamespace(prefix, nsURI);
		}

		// Add element attributes
		Iterator attris = element.getAttributes();
		while (attris.hasNext()) {
			Attribute attr = (Attribute) attris.next();
			QName atQName = attr.getName();
			String value = attr.getValue();
			if (atQName.getPrefix().length() > 0
					&& atQName.getNamespaceURI().length() > 0)
				streamWriter.writeAttribute(atQName.getPrefix(), atQName
						.getNamespaceURI(), atQName.getLocalPart(), value);
			else if (atQName.getNamespaceURI().length() > 0)
				streamWriter.writeAttribute(atQName.getNamespaceURI(),
						atQName.getLocalPart(), value);
			else
				streamWriter.writeAttribute(atQName.getLocalPart(), value);
		}
	} else if (event.isCharacters()) {
		Characters chars = event.asCharacters();
		streamWriter.writeCharacters(chars.getData());
	} else if (event.isEndElement()) {
		streamWriter.writeEndElement();
	} else if (event.isEndDocument()) {
		streamWriter.writeEndDocument();
	} else {
		throw new XMLStreamException("Unsupported event type: " + event);
	}
}
 

@Override
protected void parseInternal() throws SAXException, XMLStreamException {
	boolean documentStarted = false;
	boolean documentEnded = false;
	int elementDepth = 0;
	while (this.reader.hasNext() && elementDepth >= 0) {
		XMLEvent event = this.reader.nextEvent();
		if (!event.isStartDocument() && !event.isEndDocument() && !documentStarted) {
			handleStartDocument(event);
			documentStarted = true;
		}
		switch (event.getEventType()) {
			case XMLStreamConstants.START_DOCUMENT:
				handleStartDocument(event);
				documentStarted = true;
				break;
			case XMLStreamConstants.START_ELEMENT:
				elementDepth++;
				handleStartElement(event.asStartElement());
				break;
			case XMLStreamConstants.END_ELEMENT:
				elementDepth--;
				if (elementDepth >= 0) {
					handleEndElement(event.asEndElement());
				}
				break;
			case XMLStreamConstants.PROCESSING_INSTRUCTION:
				handleProcessingInstruction((ProcessingInstruction) event);
				break;
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA:
				handleCharacters(event.asCharacters());
				break;
			case XMLStreamConstants.END_DOCUMENT:
				handleEndDocument();
				documentEnded = true;
				break;
			case XMLStreamConstants.NOTATION_DECLARATION:
				handleNotationDeclaration((NotationDeclaration) event);
				break;
			case XMLStreamConstants.ENTITY_DECLARATION:
				handleEntityDeclaration((EntityDeclaration) event);
				break;
			case XMLStreamConstants.COMMENT:
				handleComment((Comment) event);
				break;
			case XMLStreamConstants.DTD:
				handleDtd((DTD) event);
				break;
			case XMLStreamConstants.ENTITY_REFERENCE:
				handleEntityReference((EntityReference) event);
				break;
		}
	}
	if (documentStarted && !documentEnded) {
		handleEndDocument();
	}

}
 

@Override
protected void decode(ChannelHandlerContext ctx, Object object, List out) throws Exception {
    try {
        if (object instanceof  XMLEvent) {
            final XMLEvent event = (XMLEvent) object;

            if (event.isStartDocument() || event.isEndDocument()) {
                return;
            }

            if (event.isCharacters() && depth <= 1) {
                return;
            }

            if (depth < 1 && event.isStartElement()) {
                out.add(object);
                depth++;
                return;
            }

            if (depth <= 1 && event.isEndElement()) {
                out.add(object);
                depth--;
                return;
            }

            writer.add(event);

            if (event.isStartElement()) {
                depth++;
            } else if (event.isEndElement()) {
                depth--;

                if (depth == 1) {
                    writer.flush();
                    org.dom4j.Element xmlElement = transform().getRootElement();
                    out.add(xmlElement);
                    writer.close();
                    resetWriter();
                }
            }
        }
    } catch (Exception e) {
        logger.info(e.getCause().getMessage());
        throw e;
    }
}