C++ Ptr::notNull方法代码示例

PendingUpdateList URename::createUpdateList(DynamicContext *context) const
{
  Node::Ptr node = (Node*)target_->createResult(context)->next(context).get();

  if(node->dmNodeKind() != Node::element_string &&
     node->dmNodeKind() != Node::attribute_string &&
     node->dmNodeKind() != Node::processing_instruction_string)
    XQThrow(XPath2TypeMatchException,X("URename::createUpdateList"),
            X("It is a type error for the target expression of a rename expression not to be a single element, "
              "attribute or processing instruction [err:XUTY0012]"));

  ATQNameOrDerived::Ptr qname = (ATQNameOrDerived*)name_->createResult(context)->next(context).get();

  // 3. The following checks are performed for error conditions:
  //    a. If $target is an element node, the "namespaces" property of $target must not include any namespace binding that conflicts
  //       with the implied namespace binding of $QName [err:XUDY0023].
  if(node->dmNodeKind() == Node::element_string) {
    ATAnyURIOrDerived::Ptr uri = FunctionNamespaceURIForPrefix::uriForPrefix(qname->getPrefix(), node, context, this);
    if(uri.notNull() && !XPath2Utils::equals(uri->asString(context), qname->getURI())) {
      XMLBuffer buf;
      buf.append(X("Implied namespace binding for the rename expression (\""));
      buf.append(qname->getPrefix());
      buf.append(X("\" -> \""));
      buf.append(qname->getURI());
      buf.append(X("\") conflicts with those already existing on the target element [err:XUDY0023]"));
      XQThrow3(DynamicErrorException, X("URename::createUpdateList"), buf.getRawBuffer(), this);
    }
  }
  //    b. If $target is an attribute node that has a parent, the "namespaces" property of parent($target) must not include any
  //       namespace binding that conflicts with the implied namespace binding of $QName [err:XUDY0023].
  else if(node->dmNodeKind() == Node::attribute_string) {
    Node::Ptr parentNode = node->dmParent(context);
    if(parentNode.notNull() && qname->getURI() != 0 && *(qname->getURI()) != 0) {
      ATAnyURIOrDerived::Ptr uri = FunctionNamespaceURIForPrefix::uriForPrefix(qname->getPrefix(), parentNode, context, this);
      if(uri.notNull() && !XPath2Utils::equals(uri->asString(context), qname->getURI())) {
        XMLBuffer buf;
        buf.append(X("Implied namespace binding for the rename expression (\""));
        buf.append(qname->getPrefix());
        buf.append(X("\" -> \""));
        buf.append(qname->getURI());
        buf.append(X("\") conflicts with those already existing on the parent element of the target attribute [err:XUDY0023]"));
        XQThrow3(DynamicErrorException, X("URename::createUpdateList"), buf.getRawBuffer(), this);
      }
    }
  }
  //    c. If $target is processing instruction node, $QName must not include a non-empty namespace prefix. [err:XUDY0025].
  else if(node->dmNodeKind() == Node::processing_instruction_string && !XPath2Utils::equals(qname->getPrefix(), XMLUni::fgZeroLenString))
    XQThrow(XPath2TypeMatchException,X("URename::createUpdateList"),
            X("The target of a rename expression is a processing instruction node, and the new name "
              "expression returned a QName with a non-empty namespace prefix [err:XUDY0025]"));

  return PendingUpdate(PendingUpdate::RENAME, node, qname, this);
}

bool XercesURIResolver::resolveDocument(Sequence &result, const XMLCh* uri, DynamicContext* context, const QueryPathNode *projection)
{
  Node::Ptr doc;

  // Resolve the uri against the base uri
  const XMLCh *systemId = uri;
  XMLURL urlTmp(context->getMemoryManager());
  if(urlTmp.setURL(context->getBaseURI(), uri, urlTmp)) {
    systemId = context->getMemoryManager()->getPooledString(urlTmp.getURLText());
  } else {
	systemId = context->getMemoryManager()->getPooledString(uri);
  }

  // Check in the cache
  DOMDocument *found = _documentMap.get((void*)systemId);

  // Check to see if we can locate and parse the document
  if(found == 0) {
    try {
      doc = const_cast<DocumentCache*>(context->getDocumentCache())->loadDocument(uri, context, projection);

      found = (DOMDocument*)((DOMNode*)doc->getInterface(XercesConfiguration::gXerces));

      _documentMap.put((void*)systemId, found);
      _uriMap.put((void*)found, const_cast<XMLCh*>(systemId));
    }
    catch(const XMLParseException& e) {
      XMLBuffer errMsg;
      errMsg.set(X("Error parsing resource: "));
      errMsg.append(uri);
      errMsg.append(X(". Error message: "));
      errMsg.append(e.getError());
      errMsg.append(X(" [err:FODC0002]"));
      XQThrow2(XMLParseException,X("XercesContextImpl::resolveDocument"), errMsg.getRawBuffer());
    }
  }
  else {
    doc = new XercesNodeImpl(found, (XercesURIResolver*)context->getDefaultURIResolver());
  }

  if(doc.notNull()) {
    result.addItem(doc);
    return true;
  }

  XMLBuffer errMsg;
  errMsg.set(X("Error retrieving resource: "));
  errMsg.append(uri);
  errMsg.append(X(" [err:FODC0002]"));
  XQThrow2(XMLParseException,X("XercesContextImpl::resolveDocument"), errMsg.getRawBuffer());

  return false;
}