java类javax.xml.stream.XMLStreamConstants的实例源码

/**
 * Close the current tag, but accept some alternative elements first.
 *
 * @param tag The expected tag to close.
 * @param others Alternate elements to accept.
 * @exception XMLStreamException if a closing tag is not found.
 */
public void closeTag(String tag, String... others) throws XMLStreamException {
    for (int next = nextTag(); next != XMLStreamConstants.END_ELEMENT;
         next = nextTag()) {
        String at = find(others, s -> atTag(s));
        if (at == null) {
            throw new XMLStreamException("Parse error, END_ELEMENT(" + tag
                + " or alternatives) expected, not: " + getLocalName());
        }
        closeTag(at);
    }
    expectTag(tag);
}

/**
 * Get the attributes associated with the given START_ELEMENT or ATTRIBUTE
 * StAXevent.
 *
 * @return the StAX attributes converted to an org.xml.sax.Attributes
 */
private Attributes getAttributes() {
    AttributesImpl attrs = new AttributesImpl();

    int eventType = staxStreamReader.getEventType();
    if (eventType != XMLStreamConstants.ATTRIBUTE
        && eventType != XMLStreamConstants.START_ELEMENT) {
        throw new InternalError(
            "getAttributes() attempting to process: " + eventType);
    }

    // in SAX, namespace declarations are not part of attributes by default.
    // (there's a property to control that, but as far as we are concerned
    // we don't use it.) So don't add xmlns:* to attributes.

    // gather non-namespace attrs
    for (int i = 0; i < staxStreamReader.getAttributeCount(); i++) {
        String uri = staxStreamReader.getAttributeNamespace(i);
        if(uri==null)   uri="";
        String localName = staxStreamReader.getAttributeLocalName(i);
        String prefix = staxStreamReader.getAttributePrefix(i);
        String qName;
        if(prefix==null || prefix.length()==0)
            qName = localName;
        else
            qName = prefix + ':' + localName;
        String type = staxStreamReader.getAttributeType(i);
        String value = staxStreamReader.getAttributeValue(i);

        attrs.addAttribute(uri, localName, qName, type, value);
    }

    return attrs;
}

public StartDocumentEvent(String encoding, String version){
    if (encoding != null) {
        _encoding = encoding;
        _encodingSet = true;
    }
    if (version != null)
        _version = version;
    setEventType(XMLStreamConstants.START_DOCUMENT);
}

@Nullable
public String getAttribute(@NotNull String nsUri, @NotNull String localName) {
    try {
        XMLStreamReader sr = epr.read("EndpointReference"/*doesn't matter*/);
        while(sr.getEventType()!= XMLStreamConstants.START_ELEMENT)
            sr.next();

        return sr.getAttributeValue(nsUri,localName);
    } catch (XMLStreamException e) {
        // since we are reading from buffer, this can't happen.
        throw new AssertionError(e);
    }
}

@Test
public void testSkippingExternalDTD() throws Exception {
    XMLInputFactory xif = XMLInputFactory.newInstance();
    try(
            InputStream is= getClass().getResourceAsStream("XMLSchema.xsd");
    ) {
            XMLStreamReader reader = xif.createXMLStreamReader(getClass().getResource("XMLSchema.xsd").getFile(), is);
            int e;
            while ((e = reader.next()) == XMLStreamConstants.COMMENT);

            Assert.assertEquals(e, XMLStreamConstants.DTD, "should be DTD");
            reader.nextTag();
            Assert.assertEquals(reader.getLocalName(), "schema", "next tag should be schema");
    }
}

protected void init(String encoding, String version, boolean standalone,Location loc) {
    setEventType(XMLStreamConstants.START_DOCUMENT);
    this.fEncodingScheam = encoding;
    this.fVersion = version;
    this.fStandalone = standalone;
    if (encoding != null && !encoding.equals(""))
        this.fEncodingSchemeSet = true;
    else {
        this.fEncodingSchemeSet = false;
        this.fEncodingScheam = "UTF-8";
    }
    this.fLocation = loc;
}

private String unmarshalNodeContent(final NamespaceVersion nsVersion, final ModelNode node, final QName nodeElementName, final XMLEventReader reader) throws PolicyException {
    StringBuilder valueBuffer = null;

    loop:
    while (reader.hasNext()) {
        try {
            final XMLEvent xmlParserEvent = reader.nextEvent();
            switch (xmlParserEvent.getEventType()) {
                case XMLStreamConstants.COMMENT:
                    break; // skipping the comments
                case XMLStreamConstants.CHARACTERS:
                    valueBuffer = processCharacters(node.getType(), xmlParserEvent.asCharacters(), valueBuffer);
                    break;
                case XMLStreamConstants.END_ELEMENT:
                    checkEndTagName(nodeElementName, xmlParserEvent.asEndElement());
                    break loop; // data exctraction for currently processed policy node is done
                case XMLStreamConstants.START_ELEMENT:
                    final StartElement childElement = xmlParserEvent.asStartElement();

                    ModelNode childNode = addNewChildNode(nsVersion, node, childElement);
                    String value = unmarshalNodeContent(nsVersion, childNode, childElement.getName(), reader);

                    if (childNode.isDomainSpecific()) {
                        parseAssertionData(nsVersion, value, childNode, childElement);
                    }
                    break;
                default:
                    throw LOGGER.logSevereException(new PolicyException(LocalizationMessages.WSP_0011_UNABLE_TO_UNMARSHALL_POLICY_XML_ELEM_EXPECTED()));
            }
        } catch (XMLStreamException e) {
            throw LOGGER.logSevereException(new PolicyException(LocalizationMessages.WSP_0068_FAILED_TO_UNMARSHALL_POLICY_EXPRESSION(), e));
        }
    }

    return (valueBuffer == null) ? null : valueBuffer.toString().trim();
}

/**
 * <p>Creates a new instance of a <code>StAXSource</code>
 * by supplying an {@link XMLEventReader}.</p>
 *
 * <p><code>XMLEventReader</code> must be a
 * non-<code>null</code> reference.</p>
 *
 * <p><code>XMLEventReader</code> must be in
 * {@link XMLStreamConstants#START_DOCUMENT} or
 * {@link XMLStreamConstants#START_ELEMENT} state.</p>
 *
 * @param xmlEventReader <code>XMLEventReader</code> used to create
 *   this <code>StAXSource</code>.
 *
 * @throws XMLStreamException If <code>xmlEventReader</code> access
 *   throws an <code>Exception</code>.
 * @throws IllegalArgumentException If <code>xmlEventReader</code> ==
 *   <code>null</code>.
 * @throws IllegalStateException If <code>xmlEventReader</code>
 *   is not in <code>XMLStreamConstants.START_DOCUMENT</code> or
 *   <code>XMLStreamConstants.START_ELEMENT</code> state.
 */
public StAXSource(final XMLEventReader xmlEventReader)
    throws XMLStreamException {

    if (xmlEventReader == null) {
        throw new IllegalArgumentException(
                "StAXSource(XMLEventReader) with XMLEventReader == null");
    }

    // TODO: This is ugly ...
    // there is no way to know the current position(event) of
    // XMLEventReader.  peek() is the only way to know the next event.
    // The next event on the input stream should be
    // XMLStreamConstants.START_DOCUMENT or
    // XMLStreamConstants.START_ELEMENT.
    XMLEvent event = xmlEventReader.peek();
    int eventType = event.getEventType();
    if (eventType != XMLStreamConstants.START_DOCUMENT
            && eventType != XMLStreamConstants.START_ELEMENT) {
        throw new IllegalStateException(
            "StAXSource(XMLEventReader) with XMLEventReader "
            + "not in XMLStreamConstants.START_DOCUMENT or "
            + "XMLStreamConstants.START_ELEMENT state");
    }

    this.xmlEventReader = xmlEventReader;
    systemId = event.getLocation().getSystemId();
}

public static void toNextTag(XMLStreamReader reader, QName name) {
    // skip any whitespace
    if (reader.getEventType() != XMLStreamConstants.START_ELEMENT &&
            reader.getEventType() != XMLStreamConstants.END_ELEMENT) {
        XMLStreamReaderUtil.nextElementContent(reader);
    }
    if(reader.getEventType() == XMLStreamConstants.END_ELEMENT && name.equals(reader.getName())) {
        XMLStreamReaderUtil.nextElementContent(reader);
    }
}

private boolean post(QName tagName, XMLStreamReader xsr, boolean result) {
    if(!tagName.equals(xsr.getName()))
        return foundFool();
    if(result) {
        if(xsr.getEventType()!=XMLStreamConstants.END_ELEMENT)
            foundFool();
    } else {
        if(xsr.getEventType()!=XMLStreamConstants.START_ELEMENT)
            foundFool();
    }
    return result;
}