ixmldomnodeimpl.inl

IBM的解析xml的工具Xerces的源代码

/*
 * Copyright 1999-2000,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Id: IXMLDOMNodeImpl.inl,v 1.7 2004/09/08 13:55:35 peiyongz Exp $
 */


#include <xercesc/dom/DOMNode.hpp>
#include <xercesc/dom/DOMDocument.hpp>
#include <xercesc/dom/DOMText.hpp>
#include "XMLDOMNodeList.h"
#include "XMLDOMNamedNodeMap.h"
#include "XMLDOMUtil.h"
#include <xercesc/dom/DOMException.hpp>

XERCES_CPP_NAMESPACE_USE

template <class T, const IID* piid, class tihclass>
HRESULT STDMETHODCALLTYPE IXMLDOMNodeImpl<T,piid,tihclass>::InterfaceSupportsErrorInfo(REFIID riid)
{
	if(riid == *piid) return S_OK;
	return S_FALSE;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_nodeName(BSTR *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_nodeName\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;

	try
	{
		*pVal = SysAllocString(get_DOMNode()->getNodeName());
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return S_OK;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_nodeValue(VARIANT *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_nodeValue\n"));

	if (NULL == pVal)
		return E_POINTER;

	::VariantInit(pVal);


	try
	{
        const XMLCh* val=get_DOMNode()->getNodeValue();
		if (val != 0)
		{
			V_VT(pVal)   = VT_BSTR;
			V_BSTR(pVal) = SysAllocString(val);
		}
		else
			V_VT(pVal) = VT_NULL;
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return S_OK;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::put_nodeValue(VARIANT newVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::put_nodeValue\n"));

	try
	{
		if(V_VT(&newVal) == VT_BSTR)
		{
			get_DOMNode()->setNodeValue(V_BSTR(&newVal));
		}
		//
		//   coerce to BSTR or throw error
		//
		else
		{
			get_DOMNode()->setNodeValue((BSTR) (_bstr_t) newVal);
		}
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	

	return S_OK;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_nodeType(DOMNodeType *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_nodeType\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = get_DOMNodeType();

	return S_OK;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_parentNode(IXMLDOMNode **pVal)
{	
	ATLTRACE(_T("IXMLDOMNodeImpl::get_parentNode\n"));
	
	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;
	HRESULT hr = S_OK;

	try
	{
		DOMNode* n = get_DOMNode()->getParentNode();
		if(n!=NULL) {
			hr = wrapNode(m_pIXMLDOMDocument, n,IID_IXMLDOMNode,reinterpret_cast<LPVOID *> (pVal));
		}
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	

	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_childNodes(IXMLDOMNodeList * *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_childNodes\n"));
	
	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 = get_DOMNode()->getChildNodes();
	}
	catch(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;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_firstChild(IXMLDOMNode **pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_firstChild\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;

	HRESULT hr = S_OK;

	try
	{
		DOMNode* n = get_DOMNode()->getFirstChild();
		//
		//   returns Nothing if no children
		//
		if(n!=NULL)
			hr = wrapNode(m_pIXMLDOMDocument,n,IID_IXMLDOMNode, reinterpret_cast<LPVOID *> (pVal));
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	

	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_lastChild(IXMLDOMNode **pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_lastChild\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;

	HRESULT hr = S_OK;

	try
	{
		DOMNode* n = get_DOMNode()->getLastChild();
		if(n!=NULL)
			hr = wrapNode(m_pIXMLDOMDocument,n,IID_IXMLDOMNode, reinterpret_cast<LPVOID *> (pVal));
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	

	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_previousSibling(IXMLDOMNode * *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_previousSibling\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;
	HRESULT hr = S_OK;

	try
	{
		DOMNode* n = get_DOMNode()->getPreviousSibling();
		if(n!=NULL)
			hr = wrapNode(m_pIXMLDOMDocument,n,IID_IXMLDOMNode, reinterpret_cast<LPVOID *> (pVal));
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	

	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_nextSibling(IXMLDOMNode * *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_nextSibling\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;

	HRESULT hr = S_OK;

	try
	{
		DOMNode* n = get_DOMNode()->getNextSibling();
		if(n!=NULL)
			hr = wrapNode(m_pIXMLDOMDocument,n,IID_IXMLDOMNode, reinterpret_cast<LPVOID *> (pVal));
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::get_attributes(IXMLDOMNamedNodeMap * *pVal)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::get_attributes\n"));

	if (NULL == pVal)
		return E_POINTER;

	*pVal = NULL;

	DOMNamedNodeMap* map=NULL;
	try
	{
		map = get_DOMNode()->getAttributes();
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	if ((map == 0) || (NODE_ELEMENT  != get_DOMNodeType()))
		//&&
		//NODE_ENTITY   != get_DOMNodeType() &&
		//NODE_NOTATION != get_DOMNodeType())
		return S_OK;
	
	CXMLDOMNamedNodeMapObj *pObj = NULL;
	HRESULT hr = CXMLDOMNamedNodeMapObj::CreateInstance(&pObj);
	if (S_OK != hr)
		return hr;
	
	pObj->AddRef();
	pObj->SetOwnerDoc(m_pIXMLDOMDocument);
	pObj->m_container = map;
	
	hr = pObj->QueryInterface(IID_IXMLDOMNamedNodeMap, reinterpret_cast<LPVOID*> (pVal));
	if (S_OK != hr)
		*pVal = NULL;

	pObj->Release();
	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::insertBefore(IXMLDOMNode *newChild, VARIANT refChild, IXMLDOMNode **outNewChild)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::insertBefore\n"));

	if (NULL == outNewChild)
		return E_POINTER;

	*outNewChild = NULL;

	if (NULL == newChild)
		return E_INVALIDARG;

	if (V_VT(&refChild) != VT_DISPATCH && V_VT(&refChild) != VT_NULL)
		return E_INVALIDARG;

	if (V_VT(&refChild) == VT_NULL)
		return appendChild(newChild,outNewChild);
	
	CComQIPtr<IIBMXMLDOMNodeIdentity,&IID_IIBMXMLDOMNodeIdentity> pNewChild(newChild);
	if (!pNewChild)
		return E_NOINTERFACE;

	long id = 0;
	HRESULT hr = pNewChild->get_NodeId(&id);
	if (S_OK != hr)
		return hr;

	DOMNode *pNewChildNode = reinterpret_cast<DOMNode*> (id);
	if (NULL == pNewChildNode)
		return E_INVALIDARG;

	CComQIPtr<IIBMXMLDOMNodeIdentity,&IID_IIBMXMLDOMNodeIdentity> pRefChild(V_DISPATCH(&refChild));
	if (!pRefChild)
		return E_NOINTERFACE;

	id = 0;
	hr = pRefChild->get_NodeId(&id);
	if (S_OK != hr)
		return hr;

	DOMNode *pRefChildNode = reinterpret_cast<DOMNode*> (id);
	if (NULL == pRefChildNode)
		return E_INVALIDARG;

	try
	{
		DOMNode* n = get_DOMNode()->insertBefore(pNewChildNode, pRefChildNode);
		hr = wrapNode(m_pIXMLDOMDocument,n,IID_IXMLDOMNode, reinterpret_cast<LPVOID *> (outNewChild));
	}
	catch(DOMException& ex)
	{
		return MakeHRESULT(ex);
	}
	catch(...)
	{
		return E_FAIL;
	}
	
	return hr;
}

template <class T, const IID* piid, class tihclass>
STDMETHODIMP
IXMLDOMNodeImpl<T,piid,tihclass>::replaceChild(IXMLDOMNode *newChild, IXMLDOMNode *oldChild, IXMLDOMNode * *outNewChild)
{
	ATLTRACE(_T("IXMLDOMNodeImpl::replaceChild\n"));

	if (NULL == outNewChild)
		return E_POINTER;

	*outNewChild = NULL;

	if (NULL == oldChild)
		return E_INVALIDARG;

	if (NULL == newChild)
		return removeChild(oldChild,outNewChild);

		
	CComQIPtr<IIBMXMLDOMNodeIdentity,&IID_IIBMXMLDOMNodeIdentity> pNewChild(newChild);
	if (!pNewChild)
		return E_NOINTERFACE;

	long id = 0;
	HRESULT hr = pNewChild->get_NodeId(&id);
	if (S_OK != hr)
		return hr;

	DOMNode *pNewChildNode = reinterpret_cast<DOMNode*> (id);