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Visual C++

XMLDOMElement.cpp：源码内容
							/*
 * The Apache Software License, Version 1.1
 *
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/*
 * $Id: XMLDOMElement.cpp,v 1.1.1.1 2002/02/01 22:21:41 peiyongz Exp $
 */
#include "stdafx.h"
#include "xml4com.h"
#include "XMLDOMElement.h"
#include "XMLDOMAttribute.h"
#include "XMLDOMNodeList.h"
// IXMLDOMElement methods
STDMETHODIMP CXMLDOMElement::get_tagName(BSTR  *pVal)
{
	ATLTRACE(_T("CXMLDOMElement::get_tagNamen"));
	if (NULL == pVal)
		return E_POINTER;
	*pVal = NULL;
	try
	{
		DOMString val = element.getTagName();
		*pVal = SysAllocStringLen(val.rawBuffer(),val.length());
	}
	catch(DOM_DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return S_OK;
}
STDMETHODIMP CXMLDOMElement::getAttribute(BSTR name, VARIANT  *pVal)
{
	ATLTRACE(_T("CXMLDOMElement::getAttributen"));
	if (NULL == pVal)
		return E_POINTER;
	::VariantInit(pVal);
	V_VT(pVal) = VT_EMPTY;
	DOMString a = element.getAttribute(name);
	try {
		V_VT(pVal)   = VT_BSTR;
		V_BSTR(pVal) = SysAllocStringLen(a.rawBuffer(),a.length());
	}
	catch(DOM_DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...) {
		return E_FAIL;
	}
	
	return S_OK;
}
STDMETHODIMP CXMLDOMElement::setAttribute(BSTR name, VARIANT value)
{
	ATLTRACE(_T("CXMLDOMElement::setAttributen"));
	try
	{
		if (V_VT(&value) == VT_BSTR)
		{
			element.setAttribute(name, value.bstrVal);
		}
		else {
			element.setAttribute(name,(BSTR) (_bstr_t) value);
		}
	}
	catch(DOM_DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return S_OK;
}
STDMETHODIMP CXMLDOMElement::removeAttribute(BSTR name)
{
	ATLTRACE(_T("CXMLDOMElement::removeAttributen"));
	try
	{
		element.removeAttribute(name);
	}
	catch(DOM_DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return S_OK;
}
STDMETHODIMP CXMLDOMElement::getAttributeNode(BSTR name, IXMLDOMAttribute  **attr)
{
	ATLTRACE(_T("CXMLDOMElement::getAttributeNoden"));
	if (NULL == attr)
		return E_POINTER;
	*attr = NULL;
	DOM_Attr attrNode(element.getAttributeNode(name));
	if(attrNode.isNull())
		return S_OK;
	
	CXMLDOMAttributeObj *pObj = NULL;
	HRESULT hr = CXMLDOMAttributeObj::CreateInstance(&pObj);
	if (S_OK != hr)
		return hr;
	pObj->AddRef();
	pObj->SetOwnerDoc(m_pIXMLDOMDocument);
	try
	{
		pObj->attr = attrNode;
	}
	catch(DOM_DOMException& ex)
	{
		pObj->Release();
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		pObj->Release();
		return E_FAIL;
	}
	
	hr = pObj->QueryInterface(IID_IXMLDOMAttribute, reinterpret_cast<LPVOID*> (attr));
	if (S_OK != hr)
		*attr = NULL;
	pObj->Release();
	return hr;
}
STDMETHODIMP CXMLDOMElement::setAttributeNode(IXMLDOMAttribute  *attr, IXMLDOMAttribute  **attributeNode)
{
	ATLTRACE(_T("CXMLDOMElement::setAttributeNoden"));
	if (NULL == attr || NULL == attributeNode)
		return E_POINTER;
	*attributeNode = NULL;
	DOM_Attr* newAttr = NULL;
	IIBMXMLDOMNodeIdentity* nodeID = NULL;
	HRESULT sc = attr->QueryInterface(IID_IIBMXMLDOMNodeIdentity,(void**) &nodeID);
	if(SUCCEEDED(sc)) {
		long id = 0;
		sc = nodeID->get_NodeId(&id);
		nodeID->Release();
		if(SUCCEEDED(sc)) {
			//
			//   any subsequent failure will be reported as an invalid arg
			//
			sc = E_INVALIDARG;
			try {
				DOM_Node* newNode = (DOM_Node*) id;
				if(newNode->getNodeType() == DOM_Node::ATTRIBUTE_NODE) {
					newAttr = (DOM_Attr*) newNode;
				}
			}
			catch(...) {
			}
		}
	}
	//
	//   if we couldn't extract an attribute out of the
	//       argument, then return with a failure code
	if(newAttr == NULL) return sc;
	sc = S_OK;
	try
	{
		DOM_Attr& oldAttr = element.setAttributeNode(*newAttr);
		if(!oldAttr.isNull()) {
			CXMLDOMAttributeObj *pObj = NULL;
			sc = CXMLDOMAttributeObj::CreateInstance(&pObj);
			if (SUCCEEDED(sc)) {
				pObj->attr = oldAttr;
				pObj->AddRef();
				pObj->SetOwnerDoc(m_pIXMLDOMDocument);
				sc = pObj->QueryInterface(IID_IXMLDOMAttribute, reinterpret_cast<LPVOID*> (attributeNode));
				pObj->Release();
			}
		}
	}
	catch(DOM_DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	return sc;
}
STDMETHODIMP CXMLDOMElement::removeAttributeNode(IXMLDOMAttribute  *attr, IXMLDOMAttribute  * *attributeNode)
{
	ATLTRACE(_T("CXMLDOMElement::removeAttributeNoden"));
	if (NULL == attr || NULL == attributeNode)
		return E_POINTER;
	*attributeNode = NULL;
	CXMLDOMAttributeObj *pObj = NULL;
	HRESULT hr = CXMLDOMAttributeObj::CreateInstance(&pObj);
	if (S_OK != hr)
		return hr;
	
	pObj->AddRef();
	pObj->SetOwnerDoc(m_pIXMLDOMDocument);
	try
	{
		long id = 0;
		IIBMXMLDOMNodeIdentity* nodeID = NULL;
		if(SUCCEEDED(attr->QueryInterface(IID_IIBMXMLDOMNodeIdentity,(void**) &nodeID))) {
			nodeID->get_NodeId(&id);
			nodeID->Release();
		}
		pObj->attr = element.removeAttributeNode(*((DOM_Attr*) id));
	}
	catch(DOM_DOMException& ex)
	{
		pObj->Release();
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		pObj->Release();
		return E_FAIL;
	}
	
	hr = pObj->QueryInterface(IID_IXMLDOMAttribute, reinterpret_cast<LPVOID*> (attributeNode));
	if (S_OK != hr)
		*attributeNode = NULL;
	pObj->Release();
	return hr;
}
STDMETHODIMP CXMLDOMElement::getElementsByTagName(BSTR tagName, IXMLDOMNodeList  **pVal)
{
	ATLTRACE(_T("CXMLDOMElement::getElementsByTagNamen"));
	if (NULL == pVal)
		return E_POINTER;
	*pVal = NULL;
	CXMLDOMNodeListObj *pObj = NULL;
	HRESULT hr = CXMLDOMNodeListObj::CreateInstance(&pObj);
	if (S_OK != hr)
		return hr;
	
	pObj->AddRef();
	pObj->SetOwnerDoc(m_pIXMLDOMDocument);
	try
	{
		pObj->m_container = element.getElementsByTagName(tagName);
	}
	catch(DOM_DOMException& ex)
	{
		pObj->Release();
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		pObj->Release();
		return E_FAIL;
	}
	
	hr = pObj->QueryInterface(IID_IXMLDOMNodeList, reinterpret_cast<LPVOID*> (pVal));
	if (S_OK != hr)
		*pVal = NULL;
	pObj->Release();
	return hr;
}
STDMETHODIMP CXMLDOMElement::normalize(void)
{
	ATLTRACE(_T("CXMLDOMElement::normalizen"));
	try
	{
		element.normalize();
	}
	catch(DOM_DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}	
	return S_OK;
}

						