internal static TChild BindChild <TChild>(TParent parent, Func <TChild, SafeLink <TParent> > getLink, TChild child)
{
SafeLink <TParent> link = getLink(child);
Debug.Assert(link._value == null || link._value == parent, "don't try to hook up the same child to a different parent");
// this is the good stuff..
// only this method can actually make the link since _value is a private
link._value = parent;
return(child);
}
public SafeLinkCollection(TParent parent, Func <TChild, SafeLink <TParent> > getLink, MetadataCollection <TChild> children)
: base((IList <TChild>)SafeLink <TParent> .BindChildren(parent, getLink, children))
{
}
internal EdmFunction(string name, string namespaceName, DataSpace dataSpace, EdmFunctionPayload payload)
: base(name, namespaceName, dataSpace)
{
//---- name of the 'schema'
//---- this is used by the SQL Gen utility and update pipeline to support generation of the correct function name in the store
_schemaName = payload.Schema;
_fullName = this.NamespaceName + "." + this.Name;
FunctionParameter[] returnParameters = payload.ReturnParameters;
Debug.Assert(returnParameters.All((returnParameter) => returnParameter != null), "All return parameters must be non-null");
Debug.Assert(returnParameters.All((returnParameter) => returnParameter.Mode == ParameterMode.ReturnValue), "Return parameter in a function must have the ParameterMode equal to ReturnValue.");
_returnParameters = new ReadOnlyMetadataCollection <FunctionParameter>(
returnParameters
.Select((returnParameter) => SafeLink <EdmFunction> .BindChild <FunctionParameter>(this, FunctionParameter.DeclaringFunctionLinker, returnParameter))
.ToList());
if (payload.IsAggregate.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.Aggregate, payload.IsAggregate.Value);
}
if (payload.IsBuiltIn.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.BuiltIn, payload.IsBuiltIn.Value);
}
if (payload.IsNiladic.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.NiladicFunction, payload.IsNiladic.Value);
}
if (payload.IsComposable.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.IsComposable, payload.IsComposable.Value);
}
if (payload.IsFromProviderManifest.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.IsFromProviderManifest, payload.IsFromProviderManifest.Value);
}
if (payload.IsCachedStoreFunction.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.IsCachedStoreFunction, payload.IsCachedStoreFunction.Value);
}
if (payload.IsFunctionImport.HasValue)
{
SetFunctionAttribute(ref _functionAttributes, FunctionAttributes.IsFunctionImport, payload.IsFunctionImport.Value);
}
if (payload.ParameterTypeSemantics.HasValue)
{
_parameterTypeSemantics = payload.ParameterTypeSemantics.Value;
}
if (payload.StoreFunctionName != null)
{
_storeFunctionNameAttribute = payload.StoreFunctionName;
}
if (payload.EntitySets != null)
{
Debug.Assert(_returnParameters.Count == payload.EntitySets.Length, "The number of entity sets should match the number of return parameters");
_entitySets = new ReadOnlyMetadataCollection <EntitySet>(payload.EntitySets);
}
else
{
var list = new List <EntitySet>();
if (_returnParameters.Count != 0)
{
Debug.Assert(_returnParameters.Count == 1, "If there was more than one result set payload.EntitySets should not have been null");
list.Add(null);
}
_entitySets = new ReadOnlyMetadataCollection <EntitySet>(list);
}
if (payload.CommandText != null)
{
_commandTextAttribute = payload.CommandText;
}
if (payload.Parameters != null)
{
// validate the parameters
foreach (FunctionParameter parameter in payload.Parameters)
{
if (parameter == null)
{
throw EntityUtil.CollectionParameterElementIsNull("parameters");
}
Debug.Assert(parameter.Mode != ParameterMode.ReturnValue, "No function parameter can have ParameterMode equal to ReturnValue.");
}
// Populate the parameters
_parameters = new SafeLinkCollection <EdmFunction, FunctionParameter>(this, FunctionParameter.DeclaringFunctionLinker, new MetadataCollection <FunctionParameter>(payload.Parameters));
}
else
{
_parameters = new ReadOnlyMetadataCollection <FunctionParameter>(new MetadataCollection <FunctionParameter>());
}
}