protected virtual ClassPropertyLocation AddClassProperty(DataSchema dataSchema, PropertyToClass p2c)
{
var c = dataSchema.FindClassByID(p2c.ClassID);
var p = dataSchema.FindPropertyByID(p2c.PropertyID);
ClassPropertyLocation propLoc = null;
if (c != null && p != null)
{
if (p2c.Location == PropertyValueLocationType.TableColumn)
{
propLoc = new ClassPropertyLocation(c, p, p2c.ColumnName);
}
else if (p2c.Location == PropertyValueLocationType.ValueTable)
{
propLoc = new ClassPropertyLocation(c, p);
}
else if (p2c.Location == PropertyValueLocationType.Derived)
{
var derivedFromProp = c.FindPropertyByID(p2c.DerivedFromPropertyID);
if (derivedFromProp == null)
{
throw new Exception("Cannot find derived from property ID=" + p2c.DerivedFromPropertyID);
}
propLoc = new ClassPropertyLocation(c, p, derivedFromProp.GetLocation(c), p2c.DeriveType);
}
}
if (propLoc != null)
{
dataSchema.AddClassProperty(propLoc);
}
return(propLoc);
}
protected void InitDataSchema(DataSchema schema)
{
var objectClassIds = ObjectStorage.GetObjectIds(new Query(OwlConfig.ObjectClassID));
var datatypePropClassIds = ObjectStorage.GetObjectIds(new Query(OwlConfig.DatatypePropertyClassID));
var objPropClassIds = ObjectStorage.GetObjectIds(new Query(OwlConfig.ObjectPropertyClassID));
var datatypeIds = ObjectStorage.GetObjectIds(new Query(OwlConfig.DatatypeClassID));
var allIds = new List <long>();
allIds.AddRange(objectClassIds);
allIds.AddRange(datatypePropClassIds);
allIds.AddRange(objPropClassIds);
allIds.AddRange(datatypeIds);
var idToObj = ObjectStorage.Load(allIds.ToArray());
foreach (var metaClassObj in objectClassIds.Select(o => idToObj[o]))
{
var id = metaClassObj[OwlConfig.SuperIdPropertyID] as string;
if (id != null)
{
var name = (metaClassObj[OwlConfig.LabelClassID] as string) ?? id;
var c = new Class(id)
{
CompactID = metaClassObj.ID.Value,
Name = name
};
schema.AddClass(c);
schema.AddClassProperty(new ClassPropertyLocation(c, schema.FindPropertyByID(OwlConfig.PkPropertyID), ObjectPkColumn));
}
}
var allDatatypePropObjects = datatypePropClassIds.Select(o => idToObj[o]).ToArray();
foreach (var metaPropObj in allDatatypePropObjects)
{
var id = metaPropObj[OwlConfig.SuperIdPropertyID] as string;
if (id != null)
{
var name = (metaPropObj[OwlConfig.LabelClassID] as string) ?? id;
schema.AddProperty(new Property(id)
{
CompactID = metaPropObj.ID.Value,
Name = name,
Multivalue = true, // by default all props are multivalue in OWL
PrimaryKey = id == OwlConfig.PkPropertyID,
DataType = PropertyDataType.String // default type used for properties without explicit range definition
});
}
}
var allObjPropObjects = objPropClassIds.Select(o => idToObj[o]).ToArray();
foreach (var obj in allObjPropObjects)
{
var id = obj[OwlConfig.SuperIdPropertyID] as string;
if (id != null)
{
var name = (obj[OwlConfig.LabelClassID] as string) ?? id;
var c = new Class(id)
{
CompactID = obj.ID.Value,
Name = name,
IsPredicate = true
};
schema.AddClass(c);
}
}
var superClass = schema.FindClassByID(OwlConfig.SuperClassID);
var datatypePropClass = schema.FindClassByID(OwlConfig.DatatypePropertyClassID);
var datatypeClass = schema.FindClassByID(OwlConfig.DatatypeClassID);
var domainClass = schema.FindClassByID(OwlConfig.DomainClassID);
var rangeClass = schema.FindClassByID(OwlConfig.RangeClassID);
var objClass = schema.FindClassByID(OwlConfig.ObjectClassID);
var rdfTypeClass = schema.FindClassByID(OwlConfig.RdfTypeClassID);
var funcPropClass = schema.FindClassByID(OwlConfig.FunctionalPropertyClassID);
var invFuncPropClass = schema.FindClassByID(OwlConfig.InverseFunctionalPropertyClassID);
// resolve datatype properties
var dataTypePropRels = ObjectStorage.LoadRelations(allDatatypePropObjects,
new [] {
datatypePropClass.FindRelationship(rangeClass, datatypeClass),
datatypePropClass.FindRelationship(domainClass, objClass),
datatypePropClass.FindRelationship(rdfTypeClass, superClass)
});
var dataTypeMap = BuildDataTypeMap(datatypeIds, idToObj);
foreach (var rangeRel in dataTypePropRels.Where(r => r.Relation.Predicate == rangeClass))
{
var p = schema.FindPropertyByCompactID(rangeRel.SubjectID);
if (dataTypeMap.ContainsKey(rangeRel.ObjectID))
{
p.DataType = dataTypeMap[rangeRel.ObjectID];
}
}
foreach (var funcPropRel in dataTypePropRels.Where(r => r.Relation.Predicate == rdfTypeClass && r.ObjectID == funcPropClass.CompactID))
{
var p = schema.FindPropertyByCompactID(funcPropRel.SubjectID);
p.Multivalue = false;
}
foreach (var domainRel in dataTypePropRels.Where(r => r.Relation.Predicate == domainClass))
{
var p = schema.FindPropertyByCompactID(domainRel.SubjectID);
var c = schema.FindClassByCompactID(domainRel.ObjectID);
if (c != null && p != null)
{
AddClassProperty(schema, new ClassPropertyLocation(c, p));
}
}
// resolve object properties into relationships
var objPropClass = schema.FindClassByID(OwlConfig.ObjectPropertyClassID);
var objPropRangeRel = objPropClass.FindRelationship(rangeClass, objClass);
var objPropDomainRel = objPropClass.FindRelationship(domainClass, objClass);
var objPropRels = ObjectStorage.LoadRelations(allObjPropObjects,
new [] {
objPropClass.FindRelationship(domainClass, objClass),
objPropClass.FindRelationship(rangeClass, objClass),
objPropClass.FindRelationship(rdfTypeClass, superClass),
// TBD: subclass-of to avoid these duplicate relationships
objPropClass.FindRelationship(domainClass, superClass),
objPropClass.FindRelationship(rangeClass, superClass)
});
foreach (var predicateClass in schema.Classes.Where(c => c.IsPredicate))
{
var predRels = objPropRels.Where(r => r.SubjectID == predicateClass.CompactID).ToArray();
foreach (var domainRel in predRels.Where(r => r.Relation.Predicate == domainClass))
{
foreach (var rangeRel in predRels.Where(r => r.Relation.Predicate == rangeClass))
{
var rSubjClass = schema.FindClassByCompactID(domainRel.ObjectID);
var rObjClass = schema.FindClassByCompactID(rangeRel.ObjectID);
var subjectMultiplicity = !predRels.Any(r => r.Relation.Predicate == rdfTypeClass && r.ObjectID == invFuncPropClass.CompactID);
var objectMultiplicity = !predRels.Any(r => r.Relation.Predicate == rdfTypeClass && r.ObjectID == funcPropClass.CompactID);
var revRelationship = new Relationship(rObjClass, predicateClass, rSubjClass, subjectMultiplicity, true, null);
schema.AddRelationship(new Relationship(rSubjClass, predicateClass, rObjClass, objectMultiplicity, false, revRelationship));
schema.AddRelationship(revRelationship);
}
}
}
}
protected void InitMetaSchema(DataSchema schema, IEnumerable <ObjectContainer> metaClassObjects)
{
var metaClasses = new List <Class>();
foreach (var metaClassObj in metaClassObjects)
{
var id = metaClassObj[OwlConfig.SuperIdPropertyID] as string;
if (id != null)
{
var c = new Class(id)
{
CompactID = metaClassObj.ID.Value,
Name = id
};
schema.AddClass(c);
metaClasses.Add(c);
}
}
foreach (var c in metaClasses)
{
schema.AddClassProperty(new ClassPropertyLocation(c, schema.FindPropertyByID(OwlConfig.SuperIdPropertyID)));
}
var superClass = schema.FindClassByID(OwlConfig.SuperClassID);
var domainClass = FindAndAssertMetaClass(schema, OwlConfig.DomainClassID);
var rangeClass = FindAndAssertMetaClass(schema, OwlConfig.RangeClassID);
var objClass = FindAndAssertMetaClass(schema, OwlConfig.ObjectClassID);
var objPropClass = FindAndAssertMetaClass(schema, OwlConfig.ObjectPropertyClassID);
var datatypePropClass = FindAndAssertMetaClass(schema, OwlConfig.DatatypePropertyClassID);
var datatypeClass = FindAndAssertMetaClass(schema, OwlConfig.DatatypeClassID);
var labelClass = FindAndAssertMetaClass(schema, OwlConfig.LabelClassID);
var rdfTypeClass = FindAndAssertMetaClass(schema, OwlConfig.RdfTypeClassID);
var funcPropClass = FindAndAssertMetaClass(schema, OwlConfig.FunctionalPropertyClassID);
var invFuncPropClass = FindAndAssertMetaClass(schema, OwlConfig.InverseFunctionalPropertyClassID);
var pkPropClass = FindAndAssertMetaClass(schema, OwlConfig.PkPropertyID);
// object property relations
var objPropDomainRelRev = new Relationship(objClass, domainClass, objPropClass, true, true, null);
schema.AddRelationship(new Relationship(objPropClass, domainClass, objClass, true, false, objPropDomainRelRev));
var objPropRangeRelRev = new Relationship(objClass, rangeClass, objPropClass, true, true, null);
schema.AddRelationship(new Relationship(objPropClass, rangeClass, objClass, true, false, objPropRangeRelRev));
// for superclass (TBD: subclass-of should resolve these duplicate relationships)
var objPropDomainForSuperRelRev = new Relationship(superClass, domainClass, objPropClass, true, true, null);
schema.AddRelationship(new Relationship(objPropClass, domainClass, superClass, true, false, objPropDomainForSuperRelRev));
var objPropRangeForSuperRelRev = new Relationship(superClass, rangeClass, objPropClass, true, true, null);
schema.AddRelationship(new Relationship(objPropClass, rangeClass, superClass, true, false, objPropRangeForSuperRelRev));
var objPropTypeRelRev = new Relationship(superClass, rdfTypeClass, objPropClass, true, true, null);
schema.AddRelationship(new Relationship(objPropClass, rdfTypeClass, superClass, true, false, objPropTypeRelRev));
// datatype properties relations
var dtPropDomainRelRev = new Relationship(objClass, domainClass, datatypePropClass, true, true, null);
schema.AddRelationship(new Relationship(datatypePropClass, domainClass, objClass, true, false, dtPropDomainRelRev));
var dtPropRangeRelRev = new Relationship(objClass, rangeClass, datatypePropClass, true, true, null);
schema.AddRelationship(new Relationship(datatypePropClass, rangeClass, datatypeClass, false, false, dtPropRangeRelRev));
var dtPropTypeRelRev = new Relationship(superClass, rdfTypeClass, datatypePropClass, true, true, null);
schema.AddRelationship(new Relationship(datatypePropClass, rdfTypeClass, superClass, true, false, dtPropTypeRelRev));
var labelProp = new Property(labelClass.ID)
{
CompactID = labelClass.CompactID,
Name = labelClass.ID,
DataType = PropertyDataType.String
};
schema.AddProperty(labelProp);
schema.AddClassProperty(new ClassPropertyLocation(objClass, labelProp));
schema.AddClassProperty(new ClassPropertyLocation(datatypePropClass, labelProp));
schema.AddClassProperty(new ClassPropertyLocation(objPropClass, labelProp));
var pkProp = new Property(pkPropClass.ID)
{
CompactID = pkPropClass.CompactID,
Name = pkPropClass.ID,
DataType = PropertyDataType.Integer,
PrimaryKey = true
};
schema.AddProperty(pkProp);
schema.AddClassProperty(new ClassPropertyLocation(datatypeClass, pkProp, ObjectPkColumn));
}
public static DataSchema CreateTestSchema()
{
var classes = new[] {
new Class()
{
ID = "contacts",
CompactID = 1,
Name = "Contacts",
ObjectLocation = ObjectLocationType.ObjectTable
},
new Class()
{
ID = "companies",
CompactID = 2,
Name = "Companies",
ObjectLocation = ObjectLocationType.ObjectTable
},
new Class()
{
ID = "contactCompany",
CompactID = 3,
Name = "Company",
IsPredicate = true
},
new Class()
{
ID = "parentCompany",
CompactID = 4,
Name = "Parent Company",
IsPredicate = true
},
new Class()
{
ID = "countries",
CompactID = 5,
Name = "Country Lookup",
},
new Class()
{
ID = "companyCountry",
CompactID = 6,
Name = "Country",
IsPredicate = true
}
};
var props = new[] {
new Property()
{
ID = "name",
CompactID = 1,
Name = "Name",
DataType = PropertyDataType.String
},
new Property()
{
ID = "title",
CompactID = 2,
Name = "Title",
DataType = PropertyDataType.String
},
new Property()
{
ID = "birthday",
CompactID = 3,
Name = "Birthday",
DataType = PropertyDataType.DateTime
},
new Property()
{
ID = "is_primary",
CompactID = 4,
Name = "Primary",
DataType = PropertyDataType.Boolean
},
new Property()
{
ID = "net_income",
CompactID = 5,
Name = "Net Income",
DataType = PropertyDataType.Decimal
},
new Property()
{
ID = "id",
CompactID = 6,
Name = "ID",
PrimaryKey = true,
DataType = PropertyDataType.Integer
}
};
var o = new DataSchema(classes, props);
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("companies"), o.FindPropertyByID("title")));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("companies"), o.FindPropertyByID("net_income")));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("contacts"), o.FindPropertyByID("name")));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("contacts"), o.FindPropertyByID("birthday")));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("contacts"), o.FindPropertyByID("is_primary")));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("countries"), o.FindPropertyByID("title")));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("countries"), o.FindPropertyByID("id"), "id"));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("contacts"), o.FindPropertyByID("id"), "id"));
o.AddClassProperty(new ClassPropertyLocation(o.FindClassByID("companies"), o.FindPropertyByID("id"), "id"));
var companyToContactRel = new Relationship(
o.FindClassByID("companies"),
o.FindClassByID("contactCompany"),
o.FindClassByID("contacts"),
true,
true, null);
var contactToCompanyRel = new Relationship(
o.FindClassByID("contacts"),
o.FindClassByID("contactCompany"),
o.FindClassByID("companies"),
false,
false, companyToContactRel);
o.AddRelationship(contactToCompanyRel);
o.AddRelationship(companyToContactRel);
var companyToChildRel = new Relationship(
o.FindClassByID("companies"),
o.FindClassByID("parentCompany"),
o.FindClassByID("companies"),
true,
true, null
);
var companyToParentRel = new Relationship(
o.FindClassByID("companies"),
o.FindClassByID("parentCompany"),
o.FindClassByID("companies"),
false,
false, companyToChildRel
);
o.AddRelationship(companyToParentRel);
o.AddRelationship(companyToChildRel);
var countryToCompanyRel = new Relationship(
o.FindClassByID("countries"),
o.FindClassByID("companyCountry"),
o.FindClassByID("companies"),
true, true, null
);
var companyToCountryRel = new Relationship(
o.FindClassByID("companies"),
o.FindClassByID("companyCountry"),
o.FindClassByID("countries"),
false, false, countryToCompanyRel
);
o.AddRelationship(companyToCountryRel);
o.AddRelationship(countryToCompanyRel);
return(o);
}