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::GetFdoClassIdentityProperties (
FdoClassDefinition * pClassDef,
FdoDataPropertyDefinitionCollection * & pIdentityProps
)
{
// identity properties are acquired from the principal base class
pClassDef->AddRef ();
FdoPtr<FdoClassDefinition> childClass = pClassDef;
FdoPtr<FdoClassDefinition> baseClass;
pIdentityProps = NULL;
while ((baseClass = childClass->GetBaseClass ()) != NULL) {
childClass = baseClass;
}
pIdentityProps = childClass->GetIdentityProperties ();
if (pIdentityProps == NULL)
return false;
if(pIdentityProps->GetCount() == 0)
{
pIdentityProps->Release ();
pIdentityProps = NULL;
return false;
}
return true;
}
FdoDataPropertyDefinitionCollection* GwsBinaryFeatureWriter::FindIDProps(FdoClassDefinition* fc)
{
FdoPtr <FdoDataPropertyDefinitionCollection> idpdc = fc->GetIdentityProperties();
FdoPtr<FdoClassDefinition> base = FDO_SAFE_ADDREF(fc);
//go up class hierarchy to find base class (it has the identity properties)
while ((base = base->GetBaseClass()) != NULL)
idpdc = base->GetIdentityProperties();
if (idpdc->GetCount() == 0)
return NULL;
return (FDO_SAFE_ADDREF (idpdc.p));
}
FdoPropertyDefinition * GwsCommonFdoUtils::GetPropertyDefinition (
FdoClassDefinition * pClassDef,
FdoString * PropertyName
)
{
pClassDef->AddRef ();
FdoPtr<FdoClassDefinition> classDef = pClassDef;
FdoPropertyDefinition * propDef = NULL;
for (; propDef == NULL && classDef != NULL ; classDef = classDef->GetBaseClass ())
{
FdoPtr<FdoPropertyDefinitionCollection> propdsc = classDef->GetProperties ();
propDef = propdsc->FindItem (PropertyName);
}
return propDef;
}
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;
}