Java XMLStreamConstants.SPACE属性代码示例

/**
 * A copy of the nextTag algorithm from the XMLStreamReader javadocs,
 * but which also skips over DTD events as well as whitespace,
 * comments and PIs.
 * 
 * @param xsr the reader to advance
 * @return {@link XMLStreamConstants#START_ELEMENT} or
 *         {@link XMLStreamConstants#END_ELEMENT} for the next tag.
 * @throws XMLStreamException
 */
private static int nextTagSkipDTD(XMLStreamReader xsr)
        throws XMLStreamException {
  int eventType = xsr.next();
  while((eventType == XMLStreamConstants.CHARACTERS && xsr.isWhiteSpace())
          || (eventType == XMLStreamConstants.CDATA && xsr.isWhiteSpace())
          || eventType == XMLStreamConstants.SPACE
          || eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
          || eventType == XMLStreamConstants.COMMENT
          || eventType == XMLStreamConstants.DTD) {
    eventType = xsr.next();
  }
  if(eventType != XMLStreamConstants.START_ELEMENT
          && eventType != XMLStreamConstants.END_ELEMENT) {
    throw new XMLStreamException("expected start or end tag", xsr
            .getLocation());
  }
  return eventType;
}
 

/** Skips any insignificant events (COMMENT and PROCESSING_INSTRUCTION)
 * until a START_ELEMENT or
 * END_ELEMENT is reached. If other than space characters are
 * encountered, an exception is thrown. This method should
 * be used when processing element-only content because
 * the parser is not able to recognize ignorable whitespace if
 * then DTD is missing or not interpreted.
 * @return the event type of the element read
 * @throws XMLStreamException if the current event is not white space
 */
public int nextTag() throws XMLStreamException {

    int eventType = next();
    while((eventType == XMLStreamConstants.CHARACTERS && isWhiteSpace()) // skip whitespace
    || (eventType == XMLStreamConstants.CDATA && isWhiteSpace())
    // skip whitespace
    || eventType == XMLStreamConstants.SPACE
    || eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
    || eventType == XMLStreamConstants.COMMENT
    ) {
        eventType = next();
    }

    if (eventType != XMLStreamConstants.START_ELEMENT && eventType != XMLStreamConstants.END_ELEMENT) {
        throw new XMLStreamException(
                "found: " + getEventTypeString(eventType)
                + ", expected " + getEventTypeString(XMLStreamConstants.START_ELEMENT)
                + " or " + getEventTypeString(XMLStreamConstants.END_ELEMENT),
                getLocation());
    }

    return eventType;
}
 

private static String getEventTypeName(int eventType) {
  switch (eventType) {
    case XMLStreamConstants.START_ELEMENT:
      return "START_ELEMENT";
    case XMLStreamConstants.END_ELEMENT:
      return "END_ELEMENT";
    case XMLStreamConstants.SPACE:
      return "SPACE";
    case XMLStreamConstants.CHARACTERS:
      return "CHARACTERS";
    case XMLStreamConstants.PROCESSING_INSTRUCTION:
      return "PROCESSING_INSTRUCTION";
    case XMLStreamConstants.CDATA:
      return "CDATA";
    case XMLStreamConstants.COMMENT:
      return "COMMENT";
    case XMLStreamConstants.ENTITY_REFERENCE:
      return "ENTITY_REFERENCE";
    case XMLStreamConstants.START_DOCUMENT:
      return "START_DOCUMENT";
    case XMLStreamConstants.END_DOCUMENT:
      return "END_DOCUMENT";
  }
  return null;
}
 

/**
 * Skips any insignificant events (COMMENT and PROCESSING_INSTRUCTION) until
 * a START_ELEMENT or END_ELEMENT is reached. If other than space characters
 * are encountered, an exception is thrown. This method should be used when
 * processing element-only content because the parser is not able to
 * recognize ignorable whitespace if then DTD is missing or not interpreted.
 *
 * @return the event type of the element read
 * @throws XMLStreamException if the current event is not white space
 */
public int nextTag() throws XMLStreamException {

    int eventType = next();
    while ((eventType == XMLStreamConstants.CHARACTERS && isWhiteSpace()) // skip whitespace
            || (eventType == XMLStreamConstants.CDATA && isWhiteSpace())
            // skip whitespace
            || eventType == XMLStreamConstants.SPACE
            || eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
            || eventType == XMLStreamConstants.COMMENT) {
        eventType = next();
    }

    if (eventType != XMLStreamConstants.START_ELEMENT && eventType != XMLStreamConstants.END_ELEMENT) {
        throw new XMLStreamException(
                "found: " + getEventTypeString(eventType)
                + ", expected " + getEventTypeString(XMLStreamConstants.START_ELEMENT)
                + " or " + getEventTypeString(XMLStreamConstants.END_ELEMENT),
                getLocation());
    }

    return eventType;
}
 

private void handleFragmentedCharacters() throws XMLStreamException, SAXException {
    buffer.setLength(0);

    // Append characters of first character event
    buffer.append(fastInfosetStreamReader.getTextCharacters(),
            fastInfosetStreamReader.getTextStart(),
            fastInfosetStreamReader.getTextLength());

    // Consume all character
    while(true) {
        switch(fastInfosetStreamReader.peekNext()) {
            case XMLStreamConstants.START_ELEMENT :
                processBufferedText(true);
                return;
            case XMLStreamConstants.END_ELEMENT :
                processBufferedText(false);
                return;
            case XMLStreamConstants.CHARACTERS :
            case XMLStreamConstants.CDATA :
            case XMLStreamConstants.SPACE :
                // Append characters of second and subsequent character events
                fastInfosetStreamReader.next();
                buffer.append(fastInfosetStreamReader.getTextCharacters(),
                        fastInfosetStreamReader.getTextStart(),
                        fastInfosetStreamReader.getTextLength());
                break;
            default:
                fastInfosetStreamReader.next();
        }
    }
}
 

/** Reads the content of a text-only element. Precondition:
 * the current event is START_ELEMENT. Postcondition:
 * The current event is the corresponding END_ELEMENT.
 * @throws XMLStreamException if the current event is not a START_ELEMENT or if
 * a non text element is encountered
 */
public String getElementText() throws XMLStreamException {

    if(getEventType() != XMLStreamConstants.START_ELEMENT) {
        throw new XMLStreamException(
        "parser must be on START_ELEMENT to read next text", getLocation());
    }
    int eventType = next();
    StringBuffer content = new StringBuffer();
    while(eventType != XMLStreamConstants.END_ELEMENT ) {
        if(eventType == XMLStreamConstants.CHARACTERS
        || eventType == XMLStreamConstants.CDATA
        || eventType == XMLStreamConstants.SPACE
        || eventType == XMLStreamConstants.ENTITY_REFERENCE) {
            content.append(getText());
        } else if(eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
        || eventType == XMLStreamConstants.COMMENT) {
            // skipping
        } else if(eventType == XMLStreamConstants.END_DOCUMENT) {
            throw new XMLStreamException("unexpected end of document when reading element text content");
        } else if(eventType == XMLStreamConstants.START_ELEMENT) {
            throw new XMLStreamException(
            "elementGetText() function expects text only elment but START_ELEMENT was encountered.", getLocation());
        } else {
            throw new XMLStreamException(
            "Unexpected event type "+ eventType, getLocation());
        }
        eventType = next();
    }
    return content.toString();
}
 

/**
 * Reads the content of a text-only element. Precondition: the current event
 * is START_ELEMENT. Postcondition: The current event is the corresponding
 * END_ELEMENT.
 *
 * @throws XMLStreamException if the current event is not a START_ELEMENT or
 * if a non text element is encountered
 */
public String getElementText() throws XMLStreamException {

    if (getEventType() != XMLStreamConstants.START_ELEMENT) {
        throw new XMLStreamException(
                "parser must be on START_ELEMENT to read next text", getLocation());
    }
    int eventType = next();
    StringBuilder content = new StringBuilder();
    while (eventType != XMLStreamConstants.END_ELEMENT) {
        if (eventType == XMLStreamConstants.CHARACTERS
                || eventType == XMLStreamConstants.CDATA
                || eventType == XMLStreamConstants.SPACE
                || eventType == XMLStreamConstants.ENTITY_REFERENCE) {
            content.append(getText());
        } else if (eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
                || eventType == XMLStreamConstants.COMMENT) {
            // skipping
        } else if (eventType == XMLStreamConstants.END_DOCUMENT) {
            throw new XMLStreamException(
                    "unexpected end of document when reading element text content");
        } else if (eventType == XMLStreamConstants.START_ELEMENT) {
            throw new XMLStreamException("elementGetText() function expects text "
                    + "only elment but START_ELEMENT was encountered.", getLocation());
        } else {
            throw new XMLStreamException(
                    "Unexpected event type " + eventType, getLocation());
        }
        eventType = next();
    }
    return content.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();
}
 

public void bridge() throws XMLStreamException {
    try {
        // remembers the nest level of elements to know when we are done.
        int depth=0;

        // if the parser is at the start tag, proceed to the first element
        int event = fastInfosetStreamReader.getEventType();
        if(event == XMLStreamConstants.START_DOCUMENT) {
            // nextTag doesn't correctly handle DTDs
            while( !fastInfosetStreamReader.isStartElement() )
                event = fastInfosetStreamReader.next();
        }


        if( event!=XMLStreamConstants.START_ELEMENT)
            throw new IllegalStateException("The current event is not START_ELEMENT\n but " + event);

        // TODO: we don't have to rely on this hack --- we can just emulate
        // start/end prefix mappings. But for now, I'll rely on this hack.
        handleStartDocument(fastInfosetStreamReader.getNamespaceContext());

        OUTER:
        while(true) {
            // These are all of the events listed in the javadoc for
            // XMLEvent.
            // The spec only really describes 11 of them.
            switch (event) {
                case XMLStreamConstants.START_ELEMENT :
                    handleStartElement();
                    depth++;
                    break;
                case XMLStreamConstants.END_ELEMENT :
                    depth--;
                    handleEndElement();
                    if(depth==0)    break OUTER;
                    break;
                case XMLStreamConstants.CHARACTERS :
                case XMLStreamConstants.CDATA :
                case XMLStreamConstants.SPACE :
                    if (predictor.expectText()) {
                        // Peek at the next event to see if there are
                        // fragmented characters
                        event = fastInfosetStreamReader.peekNext();
                        if (event == XMLStreamConstants.END_ELEMENT)
                            processNonIgnorableText();
                        else if (event == XMLStreamConstants.START_ELEMENT)
                            processIgnorableText();
                        else
                            handleFragmentedCharacters();
                    }
                    break;
                // otherwise simply ignore
            }

            event=fastInfosetStreamReader.next();
        }

        fastInfosetStreamReader.next();    // move beyond the end tag.

        handleEndDocument();
    } catch (SAXException e) {
        throw new XMLStreamException(e);
    }
}
 

public void bridge() throws XMLStreamException {

        try {
            // remembers the nest level of elements to know when we are done.
            int depth=0;

            event = staxEventReader.peek();

            if( !event.isStartDocument() && !event.isStartElement() )
                throw new IllegalStateException();

            // if the parser is on START_DOCUMENT, skip ahead to the first element
            do {
                event = staxEventReader.nextEvent();
            } while( !event.isStartElement() );

            handleStartDocument(event.asStartElement().getNamespaceContext());

            OUTER:
            while(true) {
                // These are all of the events listed in the javadoc for
                // XMLEvent.
                // The spec only really describes 11 of them.
                switch (event.getEventType()) {
                    case XMLStreamConstants.START_ELEMENT :
                        handleStartElement(event.asStartElement());
                        depth++;
                        break;
                    case XMLStreamConstants.END_ELEMENT :
                        depth--;
                        handleEndElement(event.asEndElement());
                        if(depth==0)    break OUTER;
                        break;
                    case XMLStreamConstants.CHARACTERS :
                    case XMLStreamConstants.CDATA :
                    case XMLStreamConstants.SPACE :
                        handleCharacters(event.asCharacters());
                        break;
                }


                event=staxEventReader.nextEvent();
            }

            handleEndDocument();
            event = null; // avoid keeping a stale reference
        } catch (SAXException e) {
            throw new XMLStreamException(e);
        }
    }
 

public void bridge() throws XMLStreamException {

        try {
            // remembers the nest level of elements to know when we are done.
            int depth=0;

            // if the parser is at the start tag, proceed to the first element
            int event = staxStreamReader.getEventType();
            if(event == XMLStreamConstants.START_DOCUMENT) {
                // nextTag doesn't correctly handle DTDs
                while( !staxStreamReader.isStartElement() )
                    event = staxStreamReader.next();
            }


            if( event!=XMLStreamConstants.START_ELEMENT)
                throw new IllegalStateException("The current event is not START_ELEMENT\n but " + event);

            handleStartDocument(staxStreamReader.getNamespaceContext());

            OUTER:
            while(true) {
                // These are all of the events listed in the javadoc for
                // XMLEvent.
                // The spec only really describes 11 of them.
                switch (event) {
                    case XMLStreamConstants.START_ELEMENT :
                        handleStartElement();
                        depth++;
                        break;
                    case XMLStreamConstants.END_ELEMENT :
                        depth--;
                        handleEndElement();
                        if(depth==0)    break OUTER;
                        break;
                    case XMLStreamConstants.CHARACTERS :
                    case XMLStreamConstants.CDATA :
                    case XMLStreamConstants.SPACE :
                        handleCharacters();
                        break;
                    // otherwise simply ignore
                }

                event=staxStreamReader.next();
            }

            staxStreamReader.next();    // move beyond the end tag.

            handleEndDocument();
        } catch (SAXException e) {
            throw new XMLStreamException(e);
        }
    }
 

public void parse(XMLEventReader input) throws XMLStreamException, XNIException {
    XMLEvent currentEvent = input.peek();
    if (currentEvent != null) {
        int eventType = currentEvent.getEventType();
        if (eventType != XMLStreamConstants.START_DOCUMENT &&
            eventType != XMLStreamConstants.START_ELEMENT) {
            throw new XMLStreamException();
        }
        fLocationWrapper.setLocation(currentEvent.getLocation());
        fSchemaDOMParser.startDocument(fLocationWrapper, null, fNamespaceContext, null);
        loop: while (input.hasNext()) {
            currentEvent = input.nextEvent();
            eventType = currentEvent.getEventType();
            switch (eventType) {
            case XMLStreamConstants.START_ELEMENT:
                ++fDepth;
                StartElement start = currentEvent.asStartElement();
                fillQName(fElementQName, start.getName());
                fLocationWrapper.setLocation(start.getLocation());
                fNamespaceContext.setNamespaceContext(start.getNamespaceContext());
                fillXMLAttributes(start);
                fillDeclaredPrefixes(start);
                addNamespaceDeclarations();
                fNamespaceContext.pushContext();
                fSchemaDOMParser.startElement(fElementQName, fAttributes, null);
                break;
            case XMLStreamConstants.END_ELEMENT:
                EndElement end = currentEvent.asEndElement();
                fillQName(fElementQName, end.getName());
                fillDeclaredPrefixes(end);
                fLocationWrapper.setLocation(end.getLocation());
                fSchemaDOMParser.endElement(fElementQName, null);
                fNamespaceContext.popContext();
                --fDepth;
                if (fDepth <= 0) {
                    break loop;
                }
                break;
            case XMLStreamConstants.CHARACTERS:
                sendCharactersToSchemaParser(currentEvent.asCharacters().getData(), false);
                break;
            case XMLStreamConstants.SPACE:
                sendCharactersToSchemaParser(currentEvent.asCharacters().getData(), true);
                break;
            case XMLStreamConstants.CDATA:
                fSchemaDOMParser.startCDATA(null);
                sendCharactersToSchemaParser(currentEvent.asCharacters().getData(), false);
                fSchemaDOMParser.endCDATA(null);
                break;
            case XMLStreamConstants.PROCESSING_INSTRUCTION:
                ProcessingInstruction pi = (ProcessingInstruction)currentEvent;
                fillProcessingInstruction(pi.getData());
                fSchemaDOMParser.processingInstruction(pi.getTarget(), fTempString, null);
                break;
            case XMLStreamConstants.DTD:
                /* There shouldn't be a DTD in the schema */
                break;
            case XMLStreamConstants.ENTITY_REFERENCE:
                /* Not needed for schemas */
                break;
            case XMLStreamConstants.COMMENT:
                /* No point in sending comments */
                break;
            case XMLStreamConstants.START_DOCUMENT:
                fDepth++;
                /* We automatically call startDocument before the loop */
                break;
            case XMLStreamConstants.END_DOCUMENT:
                /* We automatically call endDocument after the loop */
                break;
            }
        }
        fLocationWrapper.setLocation(null);
        fNamespaceContext.setNamespaceContext(null);
        fSchemaDOMParser.endDocument(null);
    }
}
 

public static void printEvent(XMLStreamReader xmlr, boolean showEvents) {
  if (showEvents) {
    System.out.print("EVENT:[" + xmlr.getLocation().getLineNumber() + "]["
        + xmlr.getLocation().getColumnNumber() + "] [" + getEventTypeName(xmlr.getEventType())
        + "]");
    System.out.print(" [");
  }
  switch (xmlr.getEventType()) {
    case XMLStreamConstants.START_ELEMENT:
      System.out.print("<");
      printName(xmlr);
      printNamespaces(xmlr);
      printAttributes(xmlr);
      System.out.print(">");
      break;
    case XMLStreamConstants.END_ELEMENT:
      System.out.print("</");
      printName(xmlr);
      System.out.print(">");
      break;
    case XMLStreamConstants.SPACE:
    case XMLStreamConstants.CHARACTERS:
      int start = xmlr.getTextStart();
      int length = xmlr.getTextLength();
      System.out.print(new String(xmlr.getTextCharacters(), start, length));
      break;
    case XMLStreamConstants.PROCESSING_INSTRUCTION:
      System.out.print("<?");
      if (xmlr.hasText())
        System.out.print(xmlr.getText());
      System.out.print("?>");
      break;
    case XMLStreamConstants.CDATA:
      System.out.print("<![CDATA[");
      start = xmlr.getTextStart();
      length = xmlr.getTextLength();
      System.out.print(new String(xmlr.getTextCharacters(), start, length));
      System.out.print("]]>");
      break;
    case XMLStreamConstants.COMMENT:
      System.out.print("<!--");
      if (xmlr.hasText())
        System.out.print(xmlr.getText());
      System.out.print("-->");
      break;
    case XMLStreamConstants.ENTITY_REFERENCE:
      System.out.print(xmlr.getLocalName() + "=");
      if (xmlr.hasText())
        System.out.print("[" + xmlr.getText() + "]");
      break;
    case XMLStreamConstants.START_DOCUMENT:
      System.out.print("<?xml");
      System.out.print(" version='" + xmlr.getVersion() + "'");
      System.out.print(" encoding='" + xmlr.getCharacterEncodingScheme() + "'");
      if (xmlr.isStandalone())
        System.out.print(" standalone='yes'");
      else
        System.out.print(" standalone='no'");
      System.out.print("?>");
      break;
  }
  System.out.println("]");
}