EGwsStatus GwsCommonFdoUtils::DescribeSC (
FdoIConnection * conn,
FdoString * scname,
GwsSpatialContextDescription & scdesc
)
{
FdoPtr<FdoIGetSpatialContexts> cmd;
FdoPtr<FdoISpatialContextReader> reader;
scdesc.SetClassName (GWSQualifiedName ());
scdesc.SetPropertyName (NULL);
scdesc.SetSpatialContextName (NULL);
scdesc.SetSpatialContextDesc (NULL);
scdesc.SetCsNameWkt (NULL);
if (scname == NULL || * scname == 0)
return eGwsOk;
try {
cmd = (FdoIGetSpatialContexts *) conn->CreateCommand (FdoCommandType_GetSpatialContexts);
reader = cmd->Execute ();
while (reader->ReadNext ()) {
if (wcscmp (reader->GetName (), scname) == 0) {
FdoString * cswkt = reader->GetCoordinateSystemWkt ();
FdoString * desc = reader->GetDescription ();
double xytol = reader->GetXYTolerance();
scdesc.SetCsNameWkt (cswkt);
scdesc.SetSpatialContextDesc (desc);
scdesc.SetSpatialContextName (scname);
scdesc.SetXYTolerance(xytol);
FdoPtr<FdoByteArray> pByteArray = reader->GetExtent();
if (pByteArray) {
FdoPtr<FdoFgfGeometryFactory> pAwkbFactory = FdoFgfGeometryFactory::GetInstance();
FdoPtr<FdoIGeometry> pGeometry = pAwkbFactory->CreateGeometryFromFgf(pByteArray);
FdoPtr<FdoIEnvelope> pEnvelope = pGeometry->GetEnvelope();
scdesc.SetExtents (pEnvelope);
}
return eGwsOk;
}
}
return eGwsSCNotFound;
} catch (FdoException * fdoEx) {
fdoEx->Release ();
}
// in case when exception thrown, assume that sc are not
// supported.
return eGwsNotSupported;
}
void CSuperMapGetSpatialContextsCommandTest::testExecute1()
{
// 测试WKT串是否正确只能通过MAP3D等来测，单元测试只测试对各种类型的坐标系空间语义读取器的迭代是否正确，是否出现死循环
try
{
CPPUNIT_ASSERT_MESSAGE("connection state not closed", FdoConnectionState_Closed == m_connection->GetConnectionState());
m_connection->SetConnectionString(L"DataSource=" L"\"type=sdb;database=" LOCATION L"普通平面坐标系\"");
CPPUNIT_ASSERT_MESSAGE("connection state not closed", FdoConnectionState_Closed == m_connection->GetConnectionState());
FdoConnectionState state = m_connection->Open();
CPPUNIT_ASSERT_MESSAGE("connection state not open", FdoConnectionState_Open == state);
CPPUNIT_ASSERT_MESSAGE("connection state not open", FdoConnectionState_Open == m_connection->GetConnectionState());
// Verify results of GetSpatialContext:
FdoPtr<FdoIGetSpatialContexts> getSpatialContexts = (FdoIGetSpatialContexts*)m_connection->CreateCommand(FdoCommandType_GetSpatialContexts);
//FdoPtr<FdoISpatialContextReader> spatialReader = getSpatialContexts->Execute();
// Get a SC reader
FdoPtr<FdoISpatialContextReader> reader = getSpatialContexts->Execute();
// Iterate ...
while ( reader->ReadNext() )
{
reader->GetExtent();
}
m_connection->Close();
CPPUNIT_ASSERT_MESSAGE("connection state not closed", FdoConnectionState_Closed == m_connection->GetConnectionState());
}
catch (FdoException* ex)
{
FdoException* nex = ex;
while (nex)
{
AfxMessageBox(nex->GetExceptionMessage());
nex = nex->GetCause();
}
ex->Release();
}
}