XSLT Extension Functions

// BibTitles.h : Declaration of the CBibTitles

#pragma once
#include "resource.h"       // main symbols

#include "TitlesExtFunc.h"

// CBibTitles

class ATL_NO_VTABLE CBibTitles : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CBibTitles, &CLSID_BibTitles>,
	public IDispatchImpl<IBibTitles, &IID_IBibTitles, &LIBID_TitlesExtFunc, /*wMajor =*/ 1, /*wMinor =*/ 0>
{
public:
	CBibTitles()
	{
	}

DECLARE_REGISTRY_RESOURCEID(IDR_BIBTITLES)


BEGIN_COM_MAP(CBibTitles)
	COM_INTERFACE_ENTRY(IBibTitles)
	COM_INTERFACE_ENTRY(IDispatch)
END_COM_MAP()


	DECLARE_PROTECT_FINAL_CONSTRUCT()

	HRESULT FinalConstruct()
	{
		HRESULT hr;

		if(FAILED(hr = dbConn.OpenFromInitializationString(_T("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=..\\bib2.mdb"))))
		{
			return AtlReportError(GetObjectCLSID(), _T("Failure opening database connection"), 
				GUID_NULL, hr);
			
		}

		if(FAILED(hr = session.Open(dbConn)))
		{
			return AtlReportError(GetObjectCLSID(), _T("Failure opening database session"),
					GUID_NULL, hr);
			
		}

		return S_OK;
	}
	
	void FinalRelease() 
	{
		session.Close();
		dbConn.Close();
	}

public:

	STDMETHOD(GetBookTitle)(BSTR isbn, BSTR* bookTitle);
	STDMETHOD(GetYearPublished)(BSTR isbn, LONG* yearPublished);

private:

	CDataSource dbConn;
	CSession	session;

public:
	STDMETHOD(GetIsbnByYear)(LONG year, BSTR* result);
	STDMETHOD(get_ProcessTime)(BSTR* pVal);
};

OBJECT_ENTRY_AUTO(__uuidof(BibTitles), CBibTitles)