C++ XMLBuffer::getRawBuffer方法代码示例

void XercesSequenceBuilder::textEvent(const XMLCh *chars, unsigned int length)
{
  if(document_ == 0) {
    document_ = new (context_->getMemoryManager()) XPathDocumentImpl(XQillaImplementation::getDOMImplementationImpl(), context_->getMemoryManager());
  }

  if(currentNode_->getNodeType() == DOMNode::TEXT_NODE) {
    // Combine adjacent text nodes
    XMLBuffer buf;
    buf.append(chars, length);
    ((DOMText *)currentNode_)->appendData(buf.getRawBuffer());
  }
  else if(currentParent_ == 0 || length != 0) {
		// Text nodes with a zero length value can only exist
		// when they have no parent
    XMLBuffer buf;
    buf.append(chars, length);
    DOMText *node = document_->createTextNode(buf.getRawBuffer());

    if(currentParent_ != 0)
      currentParent_->appendChild(node);
    currentNode_ = node;
  }

  if(currentParent_ == 0) {
    seq_.addItem(new XercesNodeImpl(currentNode_, (XercesURIResolver*)context_->getDefaultURIResolver()));
    document_ = 0;
    currentNode_ = 0;
  }
}

EventGenerator::Ptr XQNamespaceConstructor::generateEvents(EventHandler *events, DynamicContext *context,
                                                      bool preserveNS, bool preserveType) const
{
  const XMLCh *nodeName = m_name->createResult(context)->next(context)->asString(context);
  if(*nodeName && !XMLChar1_0::isValidNCName(nodeName, XMLString::stringLen(nodeName)))
    XQThrow(ASTException,X("XQNamespaceConstructor::generateEvents"),
            X("The name for the namespace node must be either a zero-length string or a valid xs:NCName [err:XTDE0920]"));

  if(XPath2Utils::equals(nodeName, XMLUni::fgXMLNSString))
    XQThrow(ASTException,X("XQNamespaceConstructor::generateEvents"),
            X("The name for the namespace node must not be \"xmlns\" [err:XTDE0920]"));

  XMLBuffer value;
  getStringValue(m_children, value, context);

  if(value.getLen() == 0)
    XQThrow(ASTException,X("XQNamespaceConstructor::generateEvents"),
            X("The value for the namespace node must not be empty [err:XTDE0930]"));

  if(XPath2Utils::equals(nodeName, XMLUni::fgXMLString) &&
     !XPath2Utils::equals(value.getRawBuffer(), XMLUni::fgXMLURIName))
    XQThrow(ASTException,X("XQNamespaceConstructor::generateEvents"),
            X("The name for the namespace node must not be \"xml\"  when the value is not \"http://www.w3.org/XML/1998/namespace\" [err:XTDE0925]"));

  if(XPath2Utils::equals(value.getRawBuffer(), XMLUni::fgXMLURIName) &&
     !XPath2Utils::equals(nodeName, XMLUni::fgXMLString))
    XQThrow(ASTException,X("XQNamespaceConstructor::generateEvents"),
            X("The value for the namespace node must not be \"http://www.w3.org/XML/1998/namespace\"  when the name is not \"xml\" [err:XTDE0925]"));

  events->namespaceEvent(nodeName, value.getRawBuffer());
  return 0;
}

EventGenerator::Ptr XQAttributeConstructor::generateEvents(EventHandler *events, DynamicContext *context,
                                                      bool preserveNS, bool preserveType) const
{
  AnyAtomicType::Ptr itemName = m_name->createResult(context)->next(context);
  const ATQNameOrDerived* pQName = (const ATQNameOrDerived*)itemName.get();
  const XMLCh *prefix = pQName->getPrefix();
  const XMLCh *uri = pQName->getURI();
  const XMLCh *name = pQName->getName();

  if((uri==NULL && XPath2Utils::equals(name, XMLUni::fgXMLNSString)) ||
     XPath2Utils::equals(uri, XMLUni::fgXMLNSURIName))
    XQThrow(ASTException,X("DOM Constructor"),X("A computed attribute constructor cannot create a namespace declaration [err:XQDY0044]"));

  XMLBuffer value;
  getStringValue(m_children, value, context);

  const XMLCh *typeURI = SchemaSymbols::fgURI_SCHEMAFORSCHEMA;
  const XMLCh *typeName = ATUntypedAtomic::fgDT_UNTYPEDATOMIC;

  // check if it's xml:id
  static const XMLCh id[] = { 'i', 'd', 0 };
  if(XPath2Utils::equals(name, id) && XPath2Utils::equals(uri, XMLUni::fgXMLURIName)) {
    // If the attribute name is xml:id, the string value and typed value of the attribute are further normalized by 
    // discarding any leading and trailing space (#x20) characters, and by replacing sequences of space (#x20) characters 
    // by a single space (#x20) character.
    XMLString::collapseWS(value.getRawBuffer(), context->getMemoryManager());
    typeURI = SchemaSymbols::fgURI_SCHEMAFORSCHEMA;
    typeName = XMLUni::fgIDString;
  }

  events->attributeEvent(emptyToNull(prefix), emptyToNull(uri), name, value.getRawBuffer(), typeURI, typeName);
  return 0;
}

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

  if(node->dmNodeKind() == Node::document_string)
    XQThrow(XPath2TypeMatchException,X("UReplaceValueOf::createUpdateList"),
            X("The target expression of a replace expression does not return a single "
              "node that is not a document node [err:XUTY0008]"));
    
  XMLBuffer buf;
  XQDOMConstructor::getStringValue(expr_, buf, context);

  // If $target is a comment node, and $string contains two adjacent hyphens or ends with a hyphen, a dynamic error is raised [err:XQDY0072].
  if(node->dmNodeKind() == Node::comment_string) {
    bool foundOne = false;
    for(const XMLCh *str = buf.getRawBuffer(); *str; ++str) {
      if(*str == '-') {
        if(foundOne) {
          XQThrow(DynamicErrorException,X("UReplaceValueOf::createUpdateList"),
                  X("The replace value of expression would result in a comment node whose content contains two adjacent hyphens [err:XQDY0072]"));
        }
        else foundOne = true;
      }
      else {
        foundOne = false;
      }
    }

    if(foundOne) {
      XQThrow(DynamicErrorException,X("UReplaceValueOf::createUpdateList"),
              X("The replace value of expression would result in a comment node whose content ends with a hyphen [err:XQDY0072]"));
    }
  }
  // If $target is a processing instruction node, and $string contains the substring "?>", a dynamic error is raised [err:XQDY0026].
  else if(node->dmNodeKind() == Node::processing_instruction_string) {
    bool foundQuestion = false;
    for(const XMLCh *str = buf.getRawBuffer(); *str; ++str) {
      if(*str == '?') {
        foundQuestion = true;
      }
      else {
        if(foundQuestion && *str == '>') {
          XQThrow(DynamicErrorException,X("UReplaceValueOf::createUpdateList"),
                  X("The replace value of expression would result in a processing instruction node whose content includes the string \"?>\" [err:XQDY0026]"));
        }
        foundQuestion = false;
      }
    }
  }

  Item::Ptr value = context->getItemFactory()->createString(buf.getRawBuffer(), context);

  if(node->dmNodeKind() == Node::element_string) {
    return PendingUpdate(PendingUpdate::REPLACE_ELEMENT_CONTENT, node, value, this);
  }
  else {
    return PendingUpdate(PendingUpdate::REPLACE_VALUE, node, value, this);
  }
}

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;
}

EventGenerator::Ptr XQCommentConstructor::generateEvents(EventHandler *events, DynamicContext *context,
                                                    bool preserveNS, bool preserveType) const
{
  XMLBuffer value;
  getStringValue(m_value, value, context);

  // Check for two dashes in a row, or a dash at the end
  if(xslt_) {
    XMLBuffer buf(value.getLen());
    bool foundDash = false;
    const XMLCh *ptr = value.getRawBuffer();
    const XMLCh *end = ptr + value.getLen();
    while(ptr != end) {
      if(*ptr == chDash) {
        if(foundDash) {
          buf.append(' ');
        }
        foundDash = true;
      }
      else foundDash = false;

      buf.append(*ptr);
      ++ptr;
    }

    if(foundDash) {
      buf.append(' ');
    }

    value.set(buf.getRawBuffer());
  }
  else {
    bool foundDash = false;
    const XMLCh *ptr = value.getRawBuffer();
    const XMLCh *end = ptr + value.getLen();
    while(ptr != end) {
      if(*ptr == chDash) {
        if(foundDash) break;
        foundDash = true;
      }
      else foundDash = false;
      ++ptr;
    }
    if(foundDash)
      XQThrow(ASTException,X("DOM Constructor"),X("It is a dynamic error if the result of the content expression of "
                                                  "a computed comment constructor contains two adjacent hyphens or "
                                                  "ends with a hyphen. [err:XQDY0072]"));
  }

  events->commentEvent(value.getRawBuffer());
  return 0;
}

void FunctionLookup::insertFunction(FuncFactory *func)
{
  // Use similar algorithm to lookup in order to detect overlaps
  // in argument numbers
  RefHash2KeysTableOfEnumerator<FuncFactory> iterator(const_cast<RefHash2KeysTableOf< FuncFactory >* >(&_funcTable));
  //
  // Walk the matches for the primary key (name) looking for overlaps:
  //   ensure func->max < min OR func->min > max
  //
  iterator.setPrimaryKey(func->getURINameHash());
  while(iterator.hasMoreElements())
    {
      FuncFactory *entry= &(iterator.nextElement());
      if ((func->getMaxArgs() < entry->getMinArgs()) ||
          (func->getMinArgs() > entry->getMaxArgs()))
        continue;
      // overlap -- throw exception
      XMLBuffer buf;
      buf.set(X("Multiple functions have the same expanded QName and number of arguments {"));
      buf.append(func->getURI());
      buf.append(X("}"));
      buf.append(func->getName());
      buf.append(X("#"));
      if(func->getMinArgs() >= entry->getMinArgs() &&
         func->getMinArgs() <= entry->getMaxArgs())
        XPath2Utils::numToBuf((unsigned int)func->getMinArgs(), buf);
      else
        XPath2Utils::numToBuf((unsigned int)entry->getMinArgs(), buf);
      buf.append(X(" [err:XQST0034]."));
      XQThrow2(StaticErrorException,X("FunctionLookup::insertFunction"), buf.getRawBuffer());
    }
  // Ok to add function
  size_t secondaryKey = SECONDARY_KEY(func);
  _funcTable.put((void*)func->getURINameHash(), (int)secondaryKey, func);
}

void XercesUpdateFactory::addToPutSet(const Node::Ptr &node, const LocationInfo *location, DynamicContext *context)
{
  Node::Ptr root = node->root(context);

  Sequence docURISeq = root->dmDocumentURI(context);
  const XMLCh *docuri = 0;
  if(!docURISeq.isEmpty()) {
    docuri = docURISeq.first()->asString(context);
  }

  PutItem item(docuri, root, location, context);

  std::pair<PutSet::iterator, bool> res = putSet_.insert(item);
  if(!res.second && !res.first->node->equals(item.node)) {
    if(context->getMessageListener() != 0) {
      context->getMessageListener()->warning(X("In the context of this expression"), res.first->location);
    }

    XMLBuffer buf;
    buf.append(X("Document writing conflict for URI \""));
    buf.append(item.uri);
    buf.append(X("\""));

    XQThrow3(ASTException, X("XercesUpdateFactory::addToPutSet"), buf.getRawBuffer(), location);
  }
}

Result XQSimpleContent::createResult(DynamicContext* context, int flags) const
{
    // TBD separator - jpcs
    XMLBuffer value;
    XQDOMConstructor::getStringValue(getChildren(), value, context);
    return (Item::Ptr)context->getItemFactory()->createString(value.getRawBuffer(), context);
}

TupleNode *ForTuple::staticResolution(StaticContext *context)
{
  parent_ = parent_->staticResolution(context);

  varURI_ = context->getUriBoundToPrefix(XPath2NSUtils::getPrefix(varQName_, context->getMemoryManager()), this);
  varName_ = XPath2NSUtils::getLocalName(varQName_);

  if(posQName_ && *posQName_) {
    posURI_ = context->getUriBoundToPrefix(XPath2NSUtils::getPrefix(posQName_, context->getMemoryManager()), this);
    posName_ = XPath2NSUtils::getLocalName(posQName_);

    if(XPath2Utils::equals(posName_, varName_) && XPath2Utils::equals(posURI_, varURI_)) {
      XMLBuffer errMsg;
      errMsg.set(X("The positional variable with name {"));
      errMsg.append(posURI_);
      errMsg.append(X("}"));
      errMsg.append(posName_);
      errMsg.append(X(" conflicts with the iteration variable [err:XQST0089]"));
      XQThrow(StaticErrorException,X("ForTuple::staticResolution"), errMsg.getRawBuffer());
    }
  }

  expr_ = expr_->staticResolution(context);

  return this;
}

ASTNode* FunctionLookup::lookUpFunction(const XMLCh* URI, const XMLCh* fname,
                                        const VectorOfASTNodes &args, XPath2MemoryManager* memMgr) const
{
  if (this != g_globalFunctionTable) {
    ASTNode *ret = g_globalFunctionTable->lookUpFunction(
                                                         URI, fname, args, memMgr);
    if (ret)
      return ret;
  }

  RefHash2KeysTableOfEnumerator<FuncFactory> iterator(const_cast<RefHash2KeysTableOf< FuncFactory >* >(&_funcTable));
  //
  // Walk the matches for the primary key (name) looking for matches
  // based on allowable parameters
  //
  XMLBuffer key;
  key.set(fname);
  key.append(':');
  key.append(URI);
  iterator.setPrimaryKey(key.getRawBuffer());
  size_t nargs = args.size();
  while(iterator.hasMoreElements()) {
    FuncFactory *entry= &(iterator.nextElement());
    if (entry->getMinArgs() <= nargs &&
        entry->getMaxArgs() >= nargs)
      return entry->createInstance(args, memMgr);
  }
  return NULL;
}

ASTNode* XQFunctionCall::staticResolution(StaticContext *context) 
{
  if(uri_ == 0) {
    if(prefix_ == 0 || *prefix_ == 0) {
      uri_ = context->getDefaultFuncNS();
    }
    else {
      uri_ = context->getUriBoundToPrefix(prefix_, this);
    }
  }

  ASTNode *result = context->lookUpFunction(uri_, name_, *args_, this);
  if(result == 0) {
    XMLBuffer buf;
    buf.set(X("A function called {"));
    buf.append(uri_);
    buf.append(X("}"));
    buf.append(name_);
    buf.append(X(" with "));
    XPath2Utils::numToBuf(args_ ? (unsigned int)args_->size() : 0, buf);
    buf.append(X(" arguments is not defined [err:XPST0017]"));

    XQThrow(StaticErrorException, X("XQFunctionCall::staticResolution"), buf.getRawBuffer());
  }

  // Our arguments don't belong to us anymore
  for(VectorOfASTNodes::iterator i = args_->begin(); i != args_->end(); ++i) {
    *i = 0;
  }
  // Release this object
  this->release();

  return result->staticResolution(context);
}

void XercesUpdateFactory::completeUpdate(DynamicContext *context)
{
  completeDeletions(context);
  completeRevalidation(context);

  // Call the URIResolvers to handle the PutSet
  for(PutSet::iterator i = putSet_.begin(); i != putSet_.end(); ++i) {
    try {
      if(!context->putDocument(i->node, i->uri)) {
        XMLBuffer buf;
        buf.append(X("Writing of updated document failed for URI \""));
        buf.append(i->uri);
        buf.append(X("\""));

        XQThrow3(ASTException, X("XercesUpdateFactory::completeUpdate"), buf.getRawBuffer(), i->location);
      }
    }
    catch(XQException& e) {
      if(e.getXQueryLine() == 0) {
        e.setXQueryPosition(i->location);
      }
      throw e;
    }
  }
}

Item::Ptr AtomizeResult::next(DynamicContext *context)
{
  // for $item in (Expr) return
  //   typeswitch ($item)
  //     case $value as atomic value return $value
  //     default $node return fn:data($node)

  Item::Ptr result = _sub->next(context);
  while(result.isNull()) {
    _sub = 0;
    result = _parent->next(context);
    if(result.isNull()) {
      _parent = 0;
      return 0;
    }
    if(result->isNode()) {
      _sub = ((Node*)result.get())->dmTypedValue(context);
      result = _sub->next(context);
    }
    else if(result->isFunction()) {
      XMLBuffer buf;
      buf.set(X("Sequence does not match type (xs:anyAtomicType | node())*"));
      buf.append(X(" - found item of type "));
      result->typeToBuffer(context, buf);
      buf.append(X(" [err:XPTY0004]"));
      XQThrow(XPath2TypeMatchException, X("AtomizeResult::next"), buf.getRawBuffer());
    }
  }
  return result;
}