Java DOMException.NAMESPACE_ERR屬性代碼示例

/**
* Creates a parsed XPath expression with resolved namespaces. This is
* useful when an expression will be reused in an application since it
* makes it possible to compile the expression string into a more
* efficient internal form and preresolve all namespace prefixes which
* occur within the expression.
*
* @param expression The XPath expression string to be parsed.
* @param resolver The <code>resolver</code> permits translation of
*   prefixes within the XPath expression into appropriate namespace URIs
*   . If this is specified as <code>null</code>, any namespace prefix
*   within the expression will result in <code>DOMException</code>
*   being thrown with the code <code>NAMESPACE_ERR</code>.
* @return The compiled form of the XPath expression.
* @exception XPathException
*   INVALID_EXPRESSION_ERR: Raised if the expression is not legal
*   according to the rules of the <code>XPathEvaluator</code>i
* @exception DOMException
*   NAMESPACE_ERR: Raised if the expression contains namespace prefixes
*   which cannot be resolved by the specified
*   <code>XPathNSResolver</code>.
*
    * @see org.w3c.dom.xpath.XPathEvaluator#createExpression(String, XPathNSResolver)
    */
   public XPathExpression createExpression(
           String expression,
           XPathNSResolver resolver)
           throws XPathException, DOMException {

           try {

                   // If the resolver is null, create a dummy prefix resolver
                   XPath xpath =  new XPath(expression,null,
                        ((null == resolver) ? new DummyPrefixResolver() : ((PrefixResolver)resolver)),
                         XPath.SELECT);

       return new XPathExpressionImpl(xpath, m_doc);

           } catch (TransformerException e) {
                   // Need to pass back exception code DOMException.NAMESPACE_ERR also.
                   // Error found in DOM Level 3 XPath Test Suite.
                   if(e instanceof XPathStylesheetDOM3Exception)
                           throw new DOMException(DOMException.NAMESPACE_ERR,e.getMessageAndLocation());
                   else
                           throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,e.getMessageAndLocation());

           }
   }
 

private void setName(String namespaceURI, String qname){
    CoreDocumentImpl ownerDocument = ownerDocument();
    String prefix;
    // DOM Level 3: namespace URI is never empty string.
    this.namespaceURI = namespaceURI;
    if (namespaceURI !=null) {
        this.namespaceURI = (namespaceURI.length() == 0)? null
                : namespaceURI;

    }
    int colon1 = qname.indexOf(':');
    int colon2 = qname.lastIndexOf(':');
    ownerDocument.checkNamespaceWF(qname, colon1, colon2);
    if (colon1 < 0) {
        // there is no prefix
        localName = qname;
        if (ownerDocument.errorChecking) {
            ownerDocument.checkQName(null, localName);

            if (qname.equals("xmlns") && (namespaceURI == null
                || !namespaceURI.equals(NamespaceContext.XMLNS_URI))
                || (namespaceURI!=null && namespaceURI.equals(NamespaceContext.XMLNS_URI)
                && !qname.equals("xmlns"))) {
                String msg =
                    DOMMessageFormatter.formatMessage(
                            DOMMessageFormatter.DOM_DOMAIN,
                            "NAMESPACE_ERR",
                            null);
                throw new DOMException(DOMException.NAMESPACE_ERR, msg);
            }
        }
    }
    else {
        prefix = qname.substring(0, colon1);
        localName = qname.substring(colon2+1);
        ownerDocument.checkQName(prefix, localName);
        ownerDocument.checkDOMNSErr(prefix, namespaceURI);
    }
}
 

/**
 * Creates an element of the given qualified name and namespace URI.
 * <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
 * , applications must use the value <code>null</code> as the 
 * namespaceURI parameter for methods if they wish to have no namespace.
 * @param namespaceURI The namespace URI of the element to create.
 * @param qualifiedName The qualified name of the element type to 
 *   instantiate.
 * @return A new <code>Element</code> object with the following 
 *   attributes:
 * <table border='1' cellpadding='3'>
 * <tr>
 * <th>Attribute</th>
 * <th>Value</th>
 * </tr>
 * <tr>
 * <td valign='top' rowspan='1' colspan='1'><code>Node.nodeName</code></td>
 * <td valign='top' rowspan='1' colspan='1'>
 *   <code>qualifiedName</code></td>
 * </tr>
 * <tr>
 * <td valign='top' rowspan='1' colspan='1'><code>Node.namespaceURI</code></td>
 * <td valign='top' rowspan='1' colspan='1'>
 *   <code>namespaceURI</code></td>
 * </tr>
 * <tr>
 * <td valign='top' rowspan='1' colspan='1'><code>Node.prefix</code></td>
 * <td valign='top' rowspan='1' colspan='1'>prefix, extracted 
 *   from <code>qualifiedName</code>, or <code>null</code> if there is 
 *   no prefix</td>
 * </tr>
 * <tr>
 * <td valign='top' rowspan='1' colspan='1'><code>Node.localName</code></td>
 * <td valign='top' rowspan='1' colspan='1'>local name, extracted from 
 *   <code>qualifiedName</code></td>
 * </tr>
 * <tr>
 * <td valign='top' rowspan='1' colspan='1'><code>Element.tagName</code></td>
 * <td valign='top' rowspan='1' colspan='1'>
 *   <code>qualifiedName</code></td>
 * </tr>
 * </table>
 * @exception DOMException
 *   INVALID_CHARACTER_ERR: Raised if the specified 
 *   <code>qualifiedName</code> is not an XML name according to the XML 
 *   version in use specified in the <code>Document.xmlVersion</code> 
 *   attribute.
 *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is a 
 *   malformed qualified name, if the <code>qualifiedName</code> has a 
 *   prefix and the <code>namespaceURI</code> is <code>null</code>, or 
 *   if the <code>qualifiedName</code> has a prefix that is "xml" and 
 *   the <code>namespaceURI</code> is different from "<a href='http://www.w3.org/XML/1998/namespace'>
 *   http://www.w3.org/XML/1998/namespace</a>" [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
 *   , or if the <code>qualifiedName</code> or its prefix is XMLNS and 
 *   the <code>namespaceURI</code> is different from "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>", or if the <code>namespaceURI</code> is "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>" and neither the <code>qualifiedName</code> nor its prefix is XMLNS.
 *   <br>NOT_SUPPORTED_ERR: Always thrown if the current document does not 
 *   support the <code>"XML"</code> feature, since namespaces were 
 *   defined by XML.
 * @since DOM Level 2
 */
public org.w3c.dom.Element createElementNS(String namespaceURI, String qualifiedName) {
    Element ret = new Element(qualifiedName);
    String prefix = ret.getPrefix();
    if (prefix != null) {
        if (namespaceURI == null) {
            throw new DOMException(DOMException.NAMESPACE_ERR, null);
        }
        ret.appendAttribute(new Attribute("xmlns:"+prefix, namespaceURI)); //NOI18N
    } else {
        ret = new Element(ret.getLocalName());
        if (namespaceURI != null && ! namespaceURI.equals(XMLConstants.NULL_NS_URI)) {
            ret.appendAttribute(new Attribute(XMLNS, namespaceURI)); 
        }
    }
    return ret;
}
 

/**
 * Call user data handlers to let them know the nodes they are related to
 * are being deleted. The alternative would be to do that on Node but
 * because the nodes are used as the keys we have a reference to them that
 * prevents them from being gc'ed until the document is. At the same time,
 * doing it here has the advantage of avoiding a finalize() method on Node,
 * which would affect all nodes and not just the ones that have a user
 * data.
 */
// Temporarily comment out this method, because
// 1. It seems that finalizers are not guaranteed to be called, so the
//    functionality is not implemented.
// 2. It affects the performance greatly in multi-thread environment.
// -SG
/*public void finalize() {
    if (userData == null) {
        return;
    }
    Enumeration nodes = userData.keys();
    while (nodes.hasMoreElements()) {
        Object node = nodes.nextElement();
        Hashtable t = (Hashtable) userData.get(node);
        if (t != null && !t.isEmpty()) {
            Enumeration keys = t.keys();
            while (keys.hasMoreElements()) {
                String key = (String) keys.nextElement();
                UserDataRecord r = (UserDataRecord) t.get(key);
                if (r.fHandler != null) {
                    r.fHandler.handle(UserDataHandler.NODE_DELETED,
                                      key, r.fData, null, null);
                }
            }
        }
    }
}*/

protected final void checkNamespaceWF( String qname, int colon1,
int colon2) {

    if (!errorChecking) {
        return;
    }
    // it is an error for NCName to have more than one ':'
    // check if it is valid QName [Namespace in XML production 6]
    // :camera , nikon:camera:minolta, camera:
    if (colon1 == 0 || colon1 == qname.length() - 1 || colon2 != colon1) {
        String msg =
        DOMMessageFormatter.formatMessage(
        DOMMessageFormatter.DOM_DOMAIN,
        "NAMESPACE_ERR",
        null);
        throw new DOMException(DOMException.NAMESPACE_ERR, msg);
    }
}
 

/**
 * Call user data handlers to let them know the nodes they are related to
 * are being deleted. The alternative would be to do that on Node but
 * because the nodes are used as the keys we have a reference to them that
 * prevents them from being gc'ed until the document is. At the same time,
 * doing it here has the advantage of avoiding a finalize() method on Node,
 * which would affect all nodes and not just the ones that have a user
 * data.
 */
// Temporarily comment out this method, because
// 1. It seems that finalizers are not guaranteed to be called, so the
//    functionality is not implemented.
// 2. It affects the performance greatly in multi-thread environment.
// -SG
/*public void finalize() {
 if (userData == null) {
 return;
 }
 Enumeration nodes = userData.keys();
 while (nodes.hasMoreElements()) {
 Object node = nodes.nextElement();
 Hashtable t = (Hashtable) userData.get(node);
 if (t != null && !t.isEmpty()) {
 Enumeration keys = t.keys();
 while (keys.hasMoreElements()) {
 String key = (String) keys.nextElement();
 UserDataRecord r = (UserDataRecord) t.get(key);
 if (r.fHandler != null) {
 r.fHandler.handle(UserDataHandler.NODE_DELETED,
 key, r.fData, null, null);
 }
 }
 }
 }
 }*/

protected final void checkNamespaceWF( String qname, int colon1,
        int colon2) {

    if (!errorChecking) {
        return;
    }
    // it is an error for NCName to have more than one ':'
    // check if it is valid QName [Namespace in XML production 6]
    // :camera , nikon:camera:minolta, camera:
    if (colon1 == 0 || colon1 == qname.length() - 1 || colon2 != colon1) {
        String msg =
        DOMMessageFormatter.formatMessage(
                        DOMMessageFormatter.DOM_DOMAIN,
                        "NAMESPACE_ERR",
                        null);
        throw new DOMException(DOMException.NAMESPACE_ERR, msg);
    }
}
 

/**
 *  Introduced in DOM Level 2. <p>
 *
 *  The namespace prefix of this node, or null if it is unspecified. When
 *  this node is of any type other than ELEMENT_NODE and ATTRIBUTE_NODE
 *  this is always null and setting it has no effect.<p>
 *
 *  For nodes created with a DOM Level 1 method, such as createElement from
 *  the Document interface, this is null.<p>
 *
 *  Note that setting this attribute changes the nodeName attribute, which
 *  holds the qualified name, as well as the tagName and name attributes of
 *  the Element and Attr interfaces, when applicable.<p>
 *
 * @throws INVALID_CHARACTER_ERR Raised if the specified
 *  prefix contains an invalid character.
 *
 * @since WD-DOM-Level-2-19990923
 * @see AttrNSImpl
 * @see ElementNSImpl
 */
public void setPrefix(String prefix)
    throws DOMException
{
    throw new DOMException(DOMException.NAMESPACE_ERR,
          DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN,
             "NAMESPACE_ERR", null));
}
 

/**
        * @exception DOMException
*   NAMESPACE_ERR: Always throws this exceptionn
        *
        * @see com.sun.org.apache.xml.internal.utils.PrefixResolver#getNamespaceForPrefix(String, Node)
        */
       public String getNamespaceForPrefix(String prefix, Node context) {
   String fmsg = XPATHMessages.createXPATHMessage(XPATHErrorResources.ER_NULL_RESOLVER, null);
   throw new DOMException(DOMException.NAMESPACE_ERR, fmsg);   // Unable to resolve prefix with null prefix resolver.
       }