/// <summary>
/// Constructor.
/// </summary>
/// <param name="metaType">The parent meta type.</param>
/// <param name="mi">The method info.</param>
public AttributedMetaFunction(AttributedMetaModel model, MethodInfo mi)
{
this.model = model;
this.methodInfo = mi;
this.rowTypes = _emptyTypes;
this.functionAttrib = Attribute.GetCustomAttribute(mi, typeof(FunctionAttribute), false) as FunctionAttribute;
System.Diagnostics.Debug.Assert(functionAttrib != null);
// Gather up all mapped results
ResultTypeAttribute[] attrs = (ResultTypeAttribute[])Attribute.GetCustomAttributes(mi, typeof(ResultTypeAttribute));
if (attrs.Length == 0 && mi.ReturnType == typeof(IMultipleResults))
{
throw Error.NoResultTypesDeclaredForFunction(mi.Name);
}
else if (attrs.Length > 1 && mi.ReturnType != typeof(IMultipleResults))
{
throw Error.TooManyResultTypesDeclaredForFunction(mi.Name);
}
else if (attrs.Length <= 1 && mi.ReturnType.IsGenericType &&
(mi.ReturnType.GetGenericTypeDefinition() == typeof(IEnumerable <>) ||
mi.ReturnType.GetGenericTypeDefinition() == typeof(ISingleResult <>) ||
mi.ReturnType.GetGenericTypeDefinition() == typeof(IQueryable <>)))
{
Type elementType = TypeSystem.GetElementType(mi.ReturnType);
this.rowTypes = new List <MetaType>(1)
{
this.GetMetaType(elementType)
}.AsReadOnly();
}
else if (attrs.Length > 0)
{
List <MetaType> rowTypes = new List <MetaType>();
foreach (ResultTypeAttribute rat in attrs)
{
Type type = rat.Type;
MetaType mt = this.GetMetaType(type);
// Only add unique meta types
if (!rowTypes.Contains(mt))
{
rowTypes.Add(mt);
}
}
this.rowTypes = rowTypes.AsReadOnly();
}
else
{
this.returnParameter = new AttributedMetaParameter(this.methodInfo.ReturnParameter);
}
// gather up all meta parameter
ParameterInfo[] pis = mi.GetParameters();
if (pis.Length > 0)
{
List <MetaParameter> mps = new List <MetaParameter>(pis.Length);
for (int i = 0, n = pis.Length; i < n; i++)
{
AttributedMetaParameter metaParam = new AttributedMetaParameter(pis[i]);
mps.Add(metaParam);
}
this.parameters = mps.AsReadOnly();
}
else
{
this.parameters = _emptyParameters;
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="metaType">The parent meta type.</param>
/// <param name="mi">The method info.</param>
public AttributedMetaFunction(AttributedMetaModel model, MethodInfo mi) {
this.model = model;
this.methodInfo = mi;
this.rowTypes = _emptyTypes;
this.functionAttrib = Attribute.GetCustomAttribute(mi, typeof(FunctionAttribute), false) as FunctionAttribute;
System.Diagnostics.Debug.Assert(functionAttrib != null);
// Gather up all mapped results
ResultTypeAttribute[] attrs = (ResultTypeAttribute[])Attribute.GetCustomAttributes(mi, typeof(ResultTypeAttribute));
if (attrs.Length == 0 && mi.ReturnType == typeof(IMultipleResults)) {
throw Error.NoResultTypesDeclaredForFunction(mi.Name);
}
else if (attrs.Length > 1 && mi.ReturnType != typeof(IMultipleResults)) {
throw Error.TooManyResultTypesDeclaredForFunction(mi.Name);
}
else if (attrs.Length <= 1 && mi.ReturnType.IsGenericType &&
(mi.ReturnType.GetGenericTypeDefinition() == typeof(IEnumerable<>) ||
mi.ReturnType.GetGenericTypeDefinition() == typeof(ISingleResult<>) ||
mi.ReturnType.GetGenericTypeDefinition() == typeof(IQueryable<>))) {
Type elementType = TypeSystem.GetElementType(mi.ReturnType);
this.rowTypes = new List<MetaType>(1) { this.GetMetaType(elementType) }.AsReadOnly();
}
else if (attrs.Length > 0) {
List<MetaType> rowTypes = new List<MetaType>();
foreach (ResultTypeAttribute rat in attrs) {
Type type = rat.Type;
MetaType mt = this.GetMetaType(type);
// Only add unique meta types
if (!rowTypes.Contains(mt)) {
rowTypes.Add(mt);
}
}
this.rowTypes = rowTypes.AsReadOnly();
}
else {
this.returnParameter = new AttributedMetaParameter(this.methodInfo.ReturnParameter);
}
// gather up all meta parameter
ParameterInfo[] pis = mi.GetParameters();
if (pis.Length > 0) {
List<MetaParameter> mps = new List<MetaParameter>(pis.Length);
for (int i = 0, n = pis.Length; i < n; i++) {
AttributedMetaParameter metaParam = new AttributedMetaParameter(pis[i]);
mps.Add(metaParam);
}
this.parameters = mps.AsReadOnly();
}
else {
this.parameters = _emptyParameters;
}
}
public AttributedMetaFunction(MethodInfo method, FunctionAttribute attribute)
{
functionAttribute = attribute;
methodInfo = method;
}