EGwsStatus GwsCommonFdoUtils::DescribeClassSC (
FdoIConnection * conn,
const GWSQualifiedName & classname,
GwsSpatialContextDescription & desc
)
{
FdoPtr<FdoFeatureSchema> schema;
FdoPtr<FdoClassDefinition> classDef;
GwsCommonFdoUtils::GetClassDefinition (conn, classname, schema.p, classDef.p);
for (; classDef != NULL ; classDef = classDef->GetBaseClass ()) {
FdoPtr<FdoPropertyDefinitionCollection> propdsc = classDef->GetProperties ();
// discover geometric property name. Use the first one if there are many.
for (int idx = 0; idx < propdsc->GetCount(); idx ++) {
FdoPtr<FdoPropertyDefinition> prop;
prop = propdsc->GetItem (idx);
if (prop->GetPropertyType () == FdoPropertyType_GeometricProperty) {
FdoGeometricPropertyDefinition* geomProp = static_cast<FdoGeometricPropertyDefinition*>(prop.p);
FdoString* pSC = geomProp->GetSpatialContextAssociation();
if(pSC != NULL) {
return GwsCommonFdoUtils::DescribeSC (conn, pSC, desc);
}
}
}
}
return eGwsSCNotFound;
}
bool GwsCommonFdoUtils::GetGeometryName (FdoClassDefinition *pClassDef, std::wstring &name)
{
if(pClassDef == NULL)
return false;
if(pClassDef->GetClassType() == FdoClassType_FeatureClass)
{
FdoFeatureClass* pFeatClass = dynamic_cast<FdoFeatureClass*>(pClassDef);
if(!pFeatClass)
{
assert(false);
return false;
}
FdoPtr<FdoGeometricPropertyDefinition> pgDef = pFeatClass->GetGeometryProperty();
if (pgDef != NULL) {
name = pgDef->GetName();
return true;
}
}
FdoInt32 idx;
FdoPtr<FdoClassDefinition> classDef = pClassDef;
FDO_SAFE_ADDREF(pClassDef);
for (; classDef != NULL ; classDef = classDef->GetBaseClass ())
{
FdoPtr<FdoPropertyDefinitionCollection> propdsc = classDef->GetProperties ();
// discover geometric property name. Use the first one if there are many.
for (idx = 0; idx < propdsc->GetCount(); idx ++) {
FdoPtr<FdoPropertyDefinition> prop;
prop = propdsc->GetItem(idx);
if (prop->GetPropertyType () == FdoPropertyType_GeometricProperty)
{
name = prop->GetName ();
return true;
}
}
}
return false;
}
//serializes a collection of property values into a byte array
//This function differs from WriteFeature() in that
//it will merge property values specified in the given PropertyValueCollection
//with property values in the given FeatureReader. The PropertyValueCollection
//represents properties to be updated in an old feature record represented by
//the given FeatureReader.
void GwsBinaryFeatureWriter::WriteFeature(FdoClassDefinition* fc, FdoString* fcName,
FdoPropertyValueCollection* pvc,
FdoIFeatureReader* reader)
{
FdoPtr<FdoReadOnlyPropertyDefinitionCollection> bpdc = fc->GetBaseProperties();
FdoPtr<FdoPropertyDefinitionCollection> pdc = fc->GetProperties();
//find number of properties we will store into the data record
//we will use this number to save an offset into the data records for each property
//at the beginning of the data record
int numProps = bpdc->GetCount() + pdc->GetCount();// - idpdc->GetCount();
//now generate the data value -- write all property values, except for the ones
//we already wrote to the key -- we have to check if each one is in the ID prop
//collection
//write feature class ID
m_wrtr.WriteString(fcName);
int fcNameLen = m_wrtr.GetPosition();
//reserve space for offsets into property values in data record
for (int i=0; i<numProps; i++)
m_wrtr.WriteInt32(0);
int index = 0;
//base properties first
for (int i=0; i<bpdc->GetCount(); i++)
{
FdoPtr<FdoPropertyDefinition> pd = (FdoPropertyDefinition*)bpdc->GetItem(i);
//save offset of property data to the reserved position at the
//beginning of the record
//TODO: endian
((int*)(m_wrtr.GetData() + fcNameLen))[index++] = m_wrtr.GetPosition();
//if property is autogenerated, do not write
//anything. We use the record number as autogen property value
//so we can obtain it at read time
//if (!pi->IsPropAutoGen(pd->GetName()))
//{
if (pvc)
{
if( pd->GetPropertyType() == FdoPropertyType_AssociationProperty )
{
if( ! WriteAssociationProperty((FdoAssociationPropertyDefinition*)pd.p, pvc) )
WriteAssociationProperty((FdoAssociationPropertyDefinition*)pd.p, reader);
}
else
{
FdoPtr<FdoPropertyValue> pv((FdoPropertyValue*)pvc->FindItem(pd->GetName()));
if(pv != NULL)
WriteProperty(pd, pv);
else
WriteProperty(pd, reader);
}
}
else
{
WriteProperty(pd, reader);
}
//}
}
//class properties
for (int i=0; i<pdc->GetCount(); i++)
{
FdoPtr<FdoPropertyDefinition> pd = (FdoPropertyDefinition*)pdc->GetItem(i);
//save offset of property data to the reserved position at the
//beginning of the record
//TODO: endian
((int*)(m_wrtr.GetData() + fcNameLen))[index++] = m_wrtr.GetPosition();
//if property is autogenerated, do not write
//anything. We use the record number as autogen property value
//so we can obtain it at read time
//if (!pi->IsPropAutoGen(pd->GetName()))
//{
if (pvc)
{
if( pd->GetPropertyType() == FdoPropertyType_AssociationProperty )
{
if( ! WriteAssociationProperty((FdoAssociationPropertyDefinition*)pd.p, pvc) )
WriteAssociationProperty((FdoAssociationPropertyDefinition*)pd.p, reader);
}
else
{
FdoPtr<FdoPropertyValue> pv((FdoPropertyValue*)pvc->GetItem(pd->GetName()));
if(pv != NULL)
WriteProperty(pd, pv);
else
WriteProperty(pd, reader);
}
}
else
{
WriteProperty(pd, reader);
}
//}
}
}