void COleDocument::SaveToStorage(CObject* pObject)
{
ASSERT(m_lpRootStg != NULL);
// create Contents stream
COleStreamFile file;
CFileException fe;
if (!file.CreateStream(m_lpRootStg, _T("Contents"),
CFile::modeReadWrite|CFile::shareExclusive|CFile::modeCreate, &fe))
{
if (fe.m_cause == CFileException::fileNotFound)
AfxThrowArchiveException(CArchiveException::badSchema);
else
AfxThrowFileException(fe.m_cause, fe.m_lOsError);
}
// save to Contents stream
CArchive saveArchive(&file, CArchive::store | CArchive::bNoFlushOnDelete);
saveArchive.m_pDocument = this;
saveArchive.m_bForceFlat = FALSE;
TRY
{
// save the contents
if (pObject != NULL)
pObject->Serialize(saveArchive);
else
Serialize(saveArchive);
saveArchive.Close();
file.Close();
// commit the root storage
SCODE sc = m_lpRootStg->Commit(STGC_ONLYIFCURRENT);
if (sc != S_OK)
AfxThrowOleException(sc);
}
CATCH_ALL(e)
{
file.Abort(); // will not throw an exception
CommitItems(FALSE); // abort save in progress
NO_CPP_EXCEPTION(saveArchive.Abort());
THROW_LAST();
}
END_CATCH_ALL
}
void COleDocument::LoadFromStorage()
{
ASSERT(m_lpRootStg != NULL);
// open Contents stream
COleStreamFile file;
CFileException fe;
if (!file.OpenStream(m_lpRootStg, _T("Contents"),
CFile::modeRead|CFile::shareExclusive, &fe) &&
!file.CreateStream(m_lpRootStg, _T("Contents"),
CFile::modeRead|CFile::shareExclusive|CFile::modeCreate, &fe))
{
if (fe.m_cause == CFileException::fileNotFound)
AfxThrowArchiveException(CArchiveException::badSchema);
else
AfxThrowFileException(fe.m_cause, fe.m_lOsError);
}
// load it with CArchive (loads from Contents stream)
CArchive loadArchive(&file, CArchive::load | CArchive::bNoFlushOnDelete);
loadArchive.m_pDocument = this;
loadArchive.m_bForceFlat = FALSE;
TRY
{
if (file.GetLength() != 0)
Serialize(loadArchive); // load main contents
loadArchive.Close();
file.Close();
}
CATCH_ALL(e)
{
file.Abort(); // will not throw an exception
DeleteContents(); // removed failed contents
NO_CPP_EXCEPTION(loadArchive.Abort());
THROW_LAST();
}
END_CATCH_ALL
}