internal virtual CollectionColumnMap CreateColumnMapFromReaderAndClrType(
DbDataReader reader,
Type type,
MetadataWorkspace workspace)
{
ConstructorInfo declaredConstructor = type.GetDeclaredConstructor();
if (type.IsAbstract() || (ConstructorInfo)null == declaredConstructor && !type.IsValueType())
{
throw new InvalidOperationException(Strings.ObjectContext_InvalidTypeForStoreQuery((object)type));
}
List <Tuple <MemberAssignment, int, EdmProperty> > source1 = new List <Tuple <MemberAssignment, int, EdmProperty> >();
foreach (PropertyInfo propertyInfo in type.GetInstanceProperties().Select <PropertyInfo, PropertyInfo>((Func <PropertyInfo, PropertyInfo>)(p => p.GetPropertyInfoForSet())))
{
Type type1 = Nullable.GetUnderlyingType(propertyInfo.PropertyType);
if ((object)type1 == null)
{
type1 = propertyInfo.PropertyType;
}
Type type2 = type1;
Type type3 = type2.IsEnum() ? type2.GetEnumUnderlyingType() : propertyInfo.PropertyType;
int ordinal;
EdmType modelEdmType;
if (ColumnMapFactory.TryGetColumnOrdinalFromReader(reader, propertyInfo.Name, out ordinal) && workspace.TryDetermineCSpaceModelType(type3, out modelEdmType) && (Helper.IsScalarType(modelEdmType) && propertyInfo.CanWriteExtended()) && (propertyInfo.GetIndexParameters().Length == 0 && (MethodInfo)null != propertyInfo.Setter()))
{
source1.Add(Tuple.Create <MemberAssignment, int, EdmProperty>(Expression.Bind((MemberInfo)propertyInfo, (Expression)Expression.Parameter(propertyInfo.PropertyType, "placeholder")), ordinal, new EdmProperty(propertyInfo.Name, TypeUsage.Create(modelEdmType))));
}
}
MemberInfo[] memberInfoArray = new MemberInfo[source1.Count];
MemberBinding[] memberBindingArray = new MemberBinding[source1.Count];
ColumnMap[] properties = new ColumnMap[source1.Count];
EdmProperty[] edmPropertyArray = new EdmProperty[source1.Count];
int index = 0;
foreach (IGrouping <int, Tuple <MemberAssignment, int, EdmProperty> > source2 in (IEnumerable <IGrouping <int, Tuple <MemberAssignment, int, EdmProperty> > >)source1.GroupBy <Tuple <MemberAssignment, int, EdmProperty>, int>((Func <Tuple <MemberAssignment, int, EdmProperty>, int>)(tuple => tuple.Item2)).OrderBy <IGrouping <int, Tuple <MemberAssignment, int, EdmProperty> >, int>((Func <IGrouping <int, Tuple <MemberAssignment, int, EdmProperty> >, int>)(tuple => tuple.Key)))
{
if (source2.Count <Tuple <MemberAssignment, int, EdmProperty> >() != 1)
{
throw new InvalidOperationException(Strings.ObjectContext_TwoPropertiesMappedToSameColumn((object)reader.GetName(source2.Key), (object)string.Join(", ", source2.Select <Tuple <MemberAssignment, int, EdmProperty>, string>((Func <Tuple <MemberAssignment, int, EdmProperty>, string>)(tuple => tuple.Item3.Name)).ToArray <string>())));
}
Tuple <MemberAssignment, int, EdmProperty> tuple1 = source2.Single <Tuple <MemberAssignment, int, EdmProperty> >();
MemberAssignment memberAssignment = tuple1.Item1;
int columnPos = tuple1.Item2;
EdmProperty edmProperty = tuple1.Item3;
memberInfoArray[index] = memberAssignment.Member;
memberBindingArray[index] = (MemberBinding)memberAssignment;
properties[index] = (ColumnMap) new ScalarColumnMap(edmProperty.TypeUsage, edmProperty.Name, 0, columnPos);
edmPropertyArray[index] = edmProperty;
++index;
}
MemberInitExpression initExpression = Expression.MemberInit((ConstructorInfo)null == declaredConstructor ? Expression.New(type) : Expression.New(declaredConstructor), memberBindingArray);
InitializerMetadata projectionInitializer = InitializerMetadata.CreateProjectionInitializer((EdmItemCollection)workspace.GetItemCollection(DataSpace.CSpace), initExpression);
RowType rowType = new RowType((IEnumerable <EdmProperty>)edmPropertyArray, projectionInitializer);
RecordColumnMap recordColumnMap = new RecordColumnMap(TypeUsage.Create((EdmType)rowType), "DefaultTypeProjection", properties, (SimpleColumnMap)null);
return((CollectionColumnMap) new SimpleCollectionColumnMap(rowType.GetCollectionType().TypeUsage, rowType.Name, (ColumnMap)recordColumnMap, (SimpleColumnMap[])null, (SimpleColumnMap[])null));
}
internal override ColumnMap Visit(RecordColumnMap columnMap, VarMap replacementVarMap)
{
SimpleColumnMap nullSentinel = columnMap.NullSentinel;
if (nullSentinel != null)
{
nullSentinel = (SimpleColumnMap)nullSentinel.Accept <ColumnMap, VarMap>((ColumnMapVisitorWithResults <ColumnMap, VarMap>) this, replacementVarMap);
}
ColumnMap[] properties = this.VisitList <ColumnMap>(columnMap.Properties, replacementVarMap);
return((ColumnMap) new RecordColumnMap(columnMap.Type, columnMap.Name, properties, nullSentinel));
}
/// <summary>
/// RecordColumnMap
/// </summary>
/// <param name="columnMap"> </param>
/// <param name="replacementVarMap"> </param>
/// <returns> </returns>
internal override ColumnMap Visit(RecordColumnMap columnMap, VarMap replacementVarMap)
{
var newNullability = columnMap.NullSentinel;
if (null != newNullability)
{
newNullability = (SimpleColumnMap)newNullability.Accept(this, replacementVarMap);
}
var fieldList = VisitList(columnMap.Properties, replacementVarMap);
return(new RecordColumnMap(columnMap.Type, columnMap.Name, fieldList, newNullability));
}
internal override void Visit(RecordColumnMap columnMap, Dump dumper)
{
using (new Dump.AutoXml(dumper, "Record", Dump.ColumnMapDumper.GetAttributes((ColumnMap)columnMap)))
{
if (columnMap.NullSentinel != null)
{
using (new Dump.AutoXml(dumper, "nullSentinel"))
columnMap.NullSentinel.Accept <Dump>((ColumnMapVisitor <Dump>) this, dumper);
}
this.VisitList <ColumnMap>(columnMap.Properties, dumper);
}
}
/// <summary>
/// RecordColumnMap
/// </summary>
internal override void Visit(RecordColumnMap columnMap, Dump dumper)
{
using (new AutoXml(dumper, "Record", GetAttributes(columnMap)))
{
if (columnMap.NullSentinel != null)
{
using (new AutoXml(dumper, "nullSentinel"))
{
columnMap.NullSentinel.Accept(this, dumper);
}
}
VisitList(columnMap.Properties, dumper);
}
}
// <summary>
// Build the collectionColumnMap from a store datareader, a type and an entitySet.
// </summary>
internal virtual CollectionColumnMap CreateColumnMapFromReaderAndType(
DbDataReader storeDataReader, EdmType edmType, EntitySet entitySet,
Dictionary <string, FunctionImportReturnTypeStructuralTypeColumnRenameMapping> renameList)
{
Debug.Assert(
Helper.IsEntityType(edmType) || null == entitySet,
"The specified non-null EntitySet is incompatible with the EDM type specified.");
// Next, build the ColumnMap directly from the edmType and entitySet provided.
var propertyColumnMaps = GetColumnMapsForType(storeDataReader, edmType, renameList);
ColumnMap elementColumnMap = null;
// NOTE: We don't have a null sentinel here, because the stored proc won't
// return one anyway; we'll just presume the data's always there.
if (Helper.IsRowType(edmType))
{
elementColumnMap = new RecordColumnMap(TypeUsage.Create(edmType), edmType.Name, propertyColumnMaps, null);
}
else if (Helper.IsComplexType(edmType))
{
elementColumnMap = new ComplexTypeColumnMap(TypeUsage.Create(edmType), edmType.Name, propertyColumnMaps, null);
}
else if (Helper.IsScalarType(edmType))
{
if (storeDataReader.FieldCount != 1)
{
throw new EntityCommandExecutionException(Strings.ADP_InvalidDataReaderFieldCountForScalarType);
}
elementColumnMap = new ScalarColumnMap(TypeUsage.Create(edmType), edmType.Name, 0, 0);
}
else if (Helper.IsEntityType(edmType))
{
elementColumnMap = CreateEntityTypeElementColumnMap(
storeDataReader, edmType, entitySet, propertyColumnMaps, null /*renameList*/);
}
else
{
Debug.Assert(false, "unexpected edmType?");
}
CollectionColumnMap collection = new SimpleCollectionColumnMap(
edmType.GetCollectionType().TypeUsage, edmType.Name, elementColumnMap, null, null);
return(collection);
}
internal virtual CollectionColumnMap CreateColumnMapFromReaderAndClrType(
DbDataReader reader, Type type, MetadataWorkspace workspace)
{
DebugCheck.NotNull(reader);
DebugCheck.NotNull(type);
DebugCheck.NotNull(workspace);
// we require a default constructor
var constructor = type.GetDeclaredConstructor();
if (type.IsAbstract() ||
(null == constructor && !type.IsValueType()))
{
throw new InvalidOperationException(Strings.ObjectContext_InvalidTypeForStoreQuery(type));
}
// build a LINQ expression used by result assembly to create results
var memberInfo = new List <Tuple <MemberAssignment, int, EdmProperty> >();
foreach (var prop in type.GetInstanceProperties()
.Select(p => p.GetPropertyInfoForSet()))
{
// for enums unwrap the type if nullable
var propertyUnderlyingType = Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType;
var propType = propertyUnderlyingType.IsEnum() ? propertyUnderlyingType.GetEnumUnderlyingType() : prop.PropertyType;
EdmType modelType;
int ordinal;
if (TryGetColumnOrdinalFromReader(reader, prop.Name, out ordinal) &&
workspace.TryDetermineCSpaceModelType(propType, out modelType) &&
(Helper.IsScalarType(modelType)) &&
prop.CanWriteExtended() &&
prop.GetIndexParameters().Length == 0 &&
null != prop.Setter())
{
memberInfo.Add(
Tuple.Create(
Expression.Bind(prop, Expression.Parameter(prop.PropertyType, "placeholder")),
ordinal,
new EdmProperty(prop.Name, TypeUsage.Create(modelType))));
}
}
// initialize members in the order in which they appear in the reader
var members = new MemberInfo[memberInfo.Count];
var memberBindings = new MemberBinding[memberInfo.Count];
var propertyMaps = new ColumnMap[memberInfo.Count];
var modelProperties = new EdmProperty[memberInfo.Count];
var i = 0;
foreach (var memberGroup in memberInfo.GroupBy(tuple => tuple.Item2).OrderBy(tuple => tuple.Key))
{
// make sure that a single column isn't contributing to multiple properties
if (memberGroup.Count() != 1)
{
throw new InvalidOperationException(
Strings.ObjectContext_TwoPropertiesMappedToSameColumn(
reader.GetName(memberGroup.Key),
String.Join(", ", memberGroup.Select(tuple => tuple.Item3.Name).ToArray())));
}
var member = memberGroup.Single();
var assignment = member.Item1;
var ordinal = member.Item2;
var modelProp = member.Item3;
members[i] = assignment.Member;
memberBindings[i] = assignment;
propertyMaps[i] = new ScalarColumnMap(modelProp.TypeUsage, modelProp.Name, 0, ordinal);
modelProperties[i] = modelProp;
i++;
}
var newExpr = null == constructor?Expression.New(type) : Expression.New(constructor);
var init = Expression.MemberInit(newExpr, memberBindings);
var initMetadata = InitializerMetadata.CreateProjectionInitializer(
(EdmItemCollection)workspace.GetItemCollection(DataSpace.CSpace), init);
// column map (a collection of rows with InitializerMetadata markup)
var rowType = new RowType(modelProperties, initMetadata);
var rowMap = new RecordColumnMap(
TypeUsage.Create(rowType),
"DefaultTypeProjection", propertyMaps, null);
CollectionColumnMap collectionMap = new SimpleCollectionColumnMap(
rowType.GetCollectionType().TypeUsage,
rowType.Name, rowMap, null, null);
return(collectionMap);
}
