public DataServiceQueryProvider(DataServiceMetadataProvider metadata)
{
_metadata = metadata;
}
private DataServiceQueryProvider <T> GetQueryProvider(DataServiceMetadataProvider metadata)
{
return(new DataServiceQueryProvider <T>(_metadata));
}
private static DataServiceMetadataProvider GetMetadataProvider(Type dataSourceType)
{
if (_mdprovider != null)
{
return(_mdprovider);
}
var exposedTypes = GetExposedTypes(dataSourceType);
var collectionNames = GetCollectionNames(dataSourceType);
var mdprovider = new DataServiceMetadataProvider(collectionNames);
var resourceTypes = new Dictionary <string, ResourceType>();
foreach (var exposedType in exposedTypes)
{
// create type
var odataType = new ResourceType(exposedType, ResourceTypeKind.EntityType, null, "BrightstarEntities",
NormaliseName(exposedType.Name), false);
resourceTypes.Add(NormaliseName(exposedType.Name), odataType);
// create primitive properties
foreach (var propertyInfo in exposedType.GetProperties())
{
var name = propertyInfo.Name;
if (!propertyInfo.PropertyType.IsGenericType && IsLiteral(propertyInfo))
{
if (propertyInfo.Name.ToLower().Equals("id"))
{
var idProperty = new ResourceProperty(
propertyInfo.Name,
ResourcePropertyKind.Key |
ResourcePropertyKind.Primitive,
ResourceType.GetPrimitiveResourceType(typeof(string))
);
odataType.AddProperty(idProperty);
}
else
{
var valueProperty = new ResourceProperty(
propertyInfo.Name,
ResourcePropertyKind.Primitive,
ResourceType.GetPrimitiveResourceType(propertyInfo.PropertyType)
);
odataType.AddProperty(valueProperty);
}
}
else
{
if (IsNullableLiteral(propertyInfo))
{
var valueProperty = new ResourceProperty(
propertyInfo.Name,
ResourcePropertyKind.Primitive,
ResourceType.GetPrimitiveResourceType(propertyInfo.PropertyType)
);
odataType.AddProperty(valueProperty);
}
}
}
}
// make resource sets
var resourceSets = new Dictionary <string, ResourceSet>();
foreach (var resourceType in resourceTypes.Values)
{
resourceSets.Add(resourceType.Name, new ResourceSet(resourceType.Name, resourceType));
}
var associationSets = new Dictionary <string, ResourceAssociationSet>();
foreach (var exposedType in exposedTypes)
{
foreach (var propertyInfo in exposedType.GetProperties())
{
// ignore inverse properties as they get sorted out later.
if (IsInverseProperty(propertyInfo))
{
continue;
}
if (propertyInfo.PropertyType.IsGenericType && propertyInfo.PropertyType.Name.StartsWith("ICollection"))
{
var referencedType = propertyInfo.PropertyType.GetGenericArguments()[0];
var referencedTypeName = NormaliseName(referencedType.Name);
// skip non entity collections
if (!resourceTypes.ContainsKey(referencedTypeName))
{
continue;
}
// add reference set relationship
var referenceSetProperty = new ResourceProperty(
propertyInfo.Name,
ResourcePropertyKind.ResourceSetReference,
resourceTypes[NormaliseName(referencedType.Name)]);
resourceTypes[NormaliseName(exposedType.Name)].AddProperty(referenceSetProperty);
var inversePropertyInfo = FindInversePropertyFor(propertyInfo);
if (inversePropertyInfo == null)
{
var assocSet = new ResourceAssociationSet(propertyInfo.Name,
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(exposedType.Name)],
resourceTypes[NormaliseName(exposedType.Name)],
referenceSetProperty),
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(referencedType.Name)],
resourceTypes[NormaliseName(referencedType.Name)],
null));
referenceSetProperty.CustomState = assocSet;
}
else
{
// create the inverse resource property
ResourceProperty inverseReferenceProperty = null;
if (inversePropertyInfo.PropertyType.IsGenericType)
{
inverseReferenceProperty = new ResourceProperty(
inversePropertyInfo.Name,
ResourcePropertyKind.ResourceSetReference,
resourceTypes[NormaliseName(inversePropertyInfo.PropertyType.GetGenericArguments()[0].Name)]);
}
else
{
inverseReferenceProperty = new ResourceProperty(
inversePropertyInfo.Name,
ResourcePropertyKind.ResourceReference,
resourceTypes[NormaliseName(inversePropertyInfo.PropertyType.Name)]);
}
resourceTypes[NormaliseName(inversePropertyInfo.ReflectedType.Name)].AddProperty(inverseReferenceProperty);
// we need to create the other property as well as the association
var assocSet = new ResourceAssociationSet(referenceSetProperty.Name + "_" + inverseReferenceProperty.Name,
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(exposedType.Name)],
resourceTypes[NormaliseName(exposedType.Name)],
referenceSetProperty),
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(referencedType.Name)],
resourceTypes[NormaliseName(referencedType.Name)],
inverseReferenceProperty));
referenceSetProperty.CustomState = assocSet;
inverseReferenceProperty.CustomState = assocSet;
}
}
else if (resourceTypes.Keys.Contains(NormaliseName(propertyInfo.PropertyType.Name)))
{
var referenceProperty = new ResourceProperty(
propertyInfo.Name,
ResourcePropertyKind.ResourceReference,
resourceTypes[NormaliseName(propertyInfo.PropertyType.Name)]);
resourceTypes[NormaliseName(exposedType.Name)].AddProperty(referenceProperty);
var inversePropertyInfo = FindInversePropertyFor(propertyInfo);
if (inversePropertyInfo == null)
{
var assocSet = new ResourceAssociationSet(referenceProperty.Name,
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(exposedType.Name)],
resourceTypes[NormaliseName(exposedType.Name)],
referenceProperty),
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(propertyInfo.PropertyType.Name)],
resourceTypes[NormaliseName(propertyInfo.PropertyType.Name)],
null));
referenceProperty.CustomState = assocSet;
}
else
{
// create the inverse resource property
ResourceProperty inverseReferenceProperty = null;
if (inversePropertyInfo.PropertyType.IsGenericType)
{
inverseReferenceProperty = new ResourceProperty(
inversePropertyInfo.Name,
ResourcePropertyKind.ResourceSetReference,
resourceTypes[NormaliseName(inversePropertyInfo.PropertyType.GetGenericArguments()[0].Name)]);
}
else
{
inverseReferenceProperty = new ResourceProperty(
inversePropertyInfo.Name,
ResourcePropertyKind.ResourceReference,
resourceTypes[NormaliseName(inversePropertyInfo.PropertyType.Name)]);
}
resourceTypes[NormaliseName(inversePropertyInfo.ReflectedType.Name)].AddProperty(inverseReferenceProperty);
// we need to create the other property as well as the association
var assocSet = new ResourceAssociationSet(referenceProperty.Name + "_" + inverseReferenceProperty.Name,
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(exposedType.Name)],
resourceTypes[NormaliseName(exposedType.Name)],
referenceProperty),
new ResourceAssociationSetEnd(
resourceSets[NormaliseName(propertyInfo.PropertyType.Name)],
resourceTypes[NormaliseName(propertyInfo.PropertyType.Name)],
inverseReferenceProperty));
referenceProperty.CustomState = assocSet;
inverseReferenceProperty.CustomState = assocSet;
}
}
}
}
foreach (var resourceAssociationSet in associationSets.Values)
{
mdprovider.AddAssociationSet(resourceAssociationSet);
}
foreach (var resourceType in resourceTypes.Values)
{
mdprovider.AddResourceType(resourceType);
mdprovider.AddResourceSet(resourceSets[resourceType.Name]);
}
_mdprovider = mdprovider;
return(_mdprovider);
}
/// <summary>
/// Creates a new entity data service. This is the default constructor called by the ServiceHost.
/// </summary>
protected EntityDataService()
{
_metadata = GetMetadataProvider(typeof(T));
_query = GetQueryProvider(_metadata);
}
