/// <summary>
/// Basic constructor
/// </summary>
/// <param name="type"> Column datatype </param>
/// <param name="name"> column name </param>
/// <param name="elementMap"> column map for the element of the collection </param>
/// <param name="keys"> list of key columns </param>
/// <param name="foreignKeys"> list of foreign key columns </param>
internal SimpleCollectionColumnMap(
TypeUsage type, string name,
ColumnMap elementMap,
SimpleColumnMap[] keys,
SimpleColumnMap[] foreignKeys)
: base(type, name, elementMap, keys, foreignKeys)
{
}
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));
}
// <summary>
// Constructor
// </summary>
// <param name="type"> datatype of column </param>
// <param name="name"> column name </param>
// <param name="elementMap"> column map for collection element </param>
// <param name="keys"> List of keys </param>
// <param name="foreignKeys"> List of foreign keys </param>
internal CollectionColumnMap(
TypeUsage type, string name, ColumnMap elementMap, SimpleColumnMap[] keys, SimpleColumnMap[] foreignKeys)
: base(type, name)
{
DebugCheck.NotNull(elementMap);
m_element = elementMap;
m_keys = keys ?? new SimpleColumnMap[0];
m_foreignKeys = foreignKeys ?? new SimpleColumnMap[0];
}
private static Dictionary <string, object> GetAttributes(ColumnMap columnMap)
{
return(new Dictionary <string, object>()
{
{
"Type",
(object)columnMap.Type.ToString()
}
});
}
internal static CollectionInfo CreateCollectionInfo(
Var collectionVar,
ColumnMap columnMap,
VarList flattenedElementVars,
VarVec keys,
List <SortKey> sortKeys,
object discriminatorValue)
{
return(new CollectionInfo(collectionVar, columnMap, flattenedElementVars, keys, sortKeys, discriminatorValue));
}
internal CollectionInfo(
Var collectionVar, ColumnMap columnMap, VarList flattenedElementVars, VarVec keys, List <SortKey> sortKeys,
object discriminatorValue)
{
m_collectionVar = collectionVar;
m_columnMap = columnMap;
m_flattenedElementVars = flattenedElementVars;
m_keys = keys;
m_sortKeys = sortKeys;
m_discriminatorValue = discriminatorValue;
}
internal CollectionColumnMap(
TypeUsage type,
string name,
ColumnMap elementMap,
SimpleColumnMap[] keys,
SimpleColumnMap[] foreignKeys)
: base(type, name)
{
this.m_element = elementMap;
this.m_keys = keys ?? new SimpleColumnMap[0];
this.m_foreignKeys = foreignKeys ?? new SimpleColumnMap[0];
}
internal DiscriminatedCollectionColumnMap(
TypeUsage type,
string name,
ColumnMap elementMap,
SimpleColumnMap[] keys,
SimpleColumnMap[] foreignKeys,
SimpleColumnMap discriminator,
object discriminatorValue)
: base(type, name, elementMap, keys, foreignKeys)
{
this.m_discriminator = discriminator;
this.m_discriminatorValue = discriminatorValue;
}
/// <summary>
/// Internal constructor
/// </summary>
/// <param name="type"> Column datatype </param>
/// <param name="name"> column name </param>
/// <param name="elementMap"> column map for collection element </param>
/// <param name="keys"> Keys for the collection </param>
/// <param name="foreignKeys"> Foreign keys for the collection </param>
/// <param name="discriminator"> Discriminator column map </param>
/// <param name="discriminatorValue"> Discriminator value </param>
internal DiscriminatedCollectionColumnMap(
TypeUsage type, string name,
ColumnMap elementMap,
SimpleColumnMap[] keys,
SimpleColumnMap[] foreignKeys,
SimpleColumnMap discriminator,
object discriminatorValue)
: base(type, name, elementMap, keys, foreignKeys)
{
DebugCheck.NotNull(discriminator);
DebugCheck.NotNull(discriminatorValue);
m_discriminator = discriminator;
m_discriminatorValue = discriminatorValue;
}
// <summary>
// Build the entityColumnMap from a store datareader, a type and an entitySet and
// a list of properties.
// </summary>
private static EntityColumnMap CreateEntityTypeElementColumnMap(
DbDataReader storeDataReader, EdmType edmType, EntitySet entitySet,
ColumnMap[] propertyColumnMaps, Dictionary <string, FunctionImportReturnTypeStructuralTypeColumnRenameMapping> renameList)
{
var entityType = (EntityType)edmType;
// The tricky part here is
// that the KeyColumns list must point at the same ColumnMap(s) that
// the properties list points to, so we build a quick array of
// ColumnMap(s) that are indexed by their ordinal; then we can walk
// the list of keyMembers, and find the ordinal in the reader, and
// pick the same ColumnMap for it.
// Build the ordinal -> ColumnMap index
var ordinalToColumnMap = new ColumnMap[storeDataReader.FieldCount];
foreach (var propertyColumnMap in propertyColumnMaps)
{
var ordinal = ((ScalarColumnMap)propertyColumnMap).ColumnPos;
ordinalToColumnMap[ordinal] = propertyColumnMap;
}
// Now build the list of KeyColumns;
IList <EdmMember> keyMembers = entityType.KeyMembers;
var keyColumns = new SimpleColumnMap[keyMembers.Count];
var keyMemberIndex = 0;
foreach (var keyMember in keyMembers)
{
var keyOrdinal = GetMemberOrdinalFromReader(storeDataReader, keyMember, edmType, renameList);
Debug.Assert(keyOrdinal >= 0, "keyMember for entity is not found by name in the data reader?");
var keyColumnMap = ordinalToColumnMap[keyOrdinal];
Debug.Assert(null != keyColumnMap, "keyMember for entity isn't in properties collection for the entity?");
keyColumns[keyMemberIndex] = (SimpleColumnMap)keyColumnMap;
keyMemberIndex++;
}
var entityIdentity = new SimpleEntityIdentity(entitySet, keyColumns);
var result = new EntityColumnMap(TypeUsage.Create(edmType), edmType.Name, propertyColumnMaps, entityIdentity);
return(result);
}
internal static string ToXml(ColumnMap columnMap)
{
var stream = new MemoryStream();
using (var dumper = new Dump(stream))
{
// Just in case the node we're provided doesn't dump as XML, we'll always stick
// an XML wrapper around it -- this happens when we're dumping scalarOps, for
// example, and it's unfortunate if you can't debug them using a dump...
using (new AutoXml(dumper, "columnMap"))
{
columnMap.Accept(ColumnMapDumper.Instance, dumper);
}
}
return(DefaultEncoding.GetString(stream.ToArray()));
}
// <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);
}
private Node VisitNestOp(Node n)
{
NestBaseOp op = n.Op as NestBaseOp;
SingleStreamNestOp singleStreamNestOp = op as SingleStreamNestOp;
List <Node> args = this.ProcessChildren(n);
Var discriminatorVar = (Var)null;
if (singleStreamNestOp != null)
{
discriminatorVar = this.GetMappedVar(singleStreamNestOp.Discriminator);
}
List <CollectionInfo> collectionInfoList = new List <CollectionInfo>();
foreach (CollectionInfo collectionInfo1 in op.CollectionInfo)
{
ColumnMap columnMap = this.Copy(collectionInfo1.ColumnMap);
Var computedVar = (Var)this.m_destCmd.CreateComputedVar(collectionInfo1.CollectionVar.Type);
this.SetMappedVar(collectionInfo1.CollectionVar, computedVar);
VarList flattenedElementVars = this.Copy(collectionInfo1.FlattenedElementVars);
VarVec keys = this.Copy(collectionInfo1.Keys);
List <SortKey> sortKeys = this.Copy(collectionInfo1.SortKeys);
CollectionInfo collectionInfo2 = Command.CreateCollectionInfo(computedVar, columnMap, flattenedElementVars, keys, sortKeys, collectionInfo1.DiscriminatorValue);
collectionInfoList.Add(collectionInfo2);
}
VarVec outputVars = this.Copy(op.Outputs);
List <SortKey> prefixSortKeys = this.Copy(op.PrefixSortKeys);
NestBaseOp nestBaseOp;
if (singleStreamNestOp != null)
{
VarVec keys = this.Copy(singleStreamNestOp.Keys);
List <SortKey> postfixSortKeys = this.Copy(singleStreamNestOp.PostfixSortKeys);
nestBaseOp = (NestBaseOp)this.m_destCmd.CreateSingleStreamNestOp(keys, prefixSortKeys, postfixSortKeys, outputVars, collectionInfoList, discriminatorVar);
}
else
{
nestBaseOp = (NestBaseOp)this.m_destCmd.CreateMultiStreamNestOp(prefixSortKeys, outputVars, collectionInfoList);
}
return(this.m_destCmd.CreateNode((Op)nestBaseOp, args));
}
private static ColumnMap[] GetColumnMapsForType(
DbDataReader storeDataReader,
EdmType edmType,
Dictionary <string, FunctionImportReturnTypeStructuralTypeColumnRenameMapping> renameList)
{
IBaseList <EdmMember> structuralMembers = TypeHelpers.GetAllStructuralMembers(edmType);
ColumnMap[] columnMapArray = new ColumnMap[structuralMembers.Count];
int index = 0;
foreach (EdmMember member in (IEnumerable)structuralMembers)
{
if (!Helper.IsScalarType(member.TypeUsage.EdmType))
{
throw new InvalidOperationException(Strings.ADP_InvalidDataReaderUnableToMaterializeNonScalarType((object)member.Name, (object)member.TypeUsage.EdmType.FullName));
}
int ordinalFromReader = ColumnMapFactory.GetMemberOrdinalFromReader(storeDataReader, member, edmType, renameList);
columnMapArray[index] = (ColumnMap) new ScalarColumnMap(member.TypeUsage, member.Name, 0, ordinalFromReader);
++index;
}
return(columnMapArray);
}
private ColumnMap Copy(ColumnMap columnMap)
{
return(ColumnMapCopier.Copy(columnMap, m_varMap));
}
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);
}
