private void InitSpecialMember(MetaDataMember mm)
{
// Can only have one auto gen member that is also an identity member,
// except if that member is a computed column (since they are implicitly auto gen)
if(mm.IsDbGenerated && mm.IsPrimaryKey && string.IsNullOrEmpty(mm.Expression))
{
if(this.dbGeneratedIdentity != null)
throw Error.TwoMembersMarkedAsPrimaryKeyAndDBGenerated(mm.Member, this.dbGeneratedIdentity.Member);
this.dbGeneratedIdentity = mm;
}
if(mm.IsPrimaryKey && !MappingSystem.IsSupportedIdentityType(mm.Type))
{
throw Error.IdentityClrTypeNotSupported(mm.DeclaringType, mm.Name, mm.Type);
}
if(mm.IsVersion)
{
if(this.version != null)
throw Error.TwoMembersMarkedAsRowVersion(mm.Member, this.version.Member);
this.version = mm;
}
if(mm.IsDiscriminator)
{
if(this.discriminator != null)
throw Error.TwoMembersMarkedAsInheritanceDiscriminator(mm.Member, this.discriminator.Member);
this.discriminator = mm;
}
}
public AttributedMetaAssociation(MemberInfo member, AssociationAttribute attribute, MetaDataMember metaDataMember)
{
memberInfo = member;
associationAttribute = attribute;
thisMember = metaDataMember;
Load();
}
internal MemberChangeConflict(ObjectChangeConflict conflict, MetaDataMember metaMember) {
this.conflict = conflict;
this.metaMember = metaMember;
this.originalValue = metaMember.StorageAccessor.GetBoxedValue(conflict.Original);
this.databaseValue = metaMember.StorageAccessor.GetBoxedValue(conflict.Database);
this.currentValue = metaMember.StorageAccessor.GetBoxedValue(conflict.TrackedObject.Current);
}
public virtual void SetOtherKey(string literalOtherKey, MetaTable thisTable, MetaTable otherTable, MetaDataMember otherAssociationMember)
{
var comma = new[] { ',' };
var otherKeysList = new List<MetaDataMember>();
if (literalOtherKey != null)
{
foreach (var otherKeyRaw in literalOtherKey.Split(comma, StringSplitOptions.RemoveEmptyEntries))
{
var otherKey = otherKeyRaw.Trim();
//we need to revisit this code - it has caused problems on both MySql and Pgsql
MemberInfo[] otherKeyFields = otherTable.RowType.Type.GetMember(otherKey);
if (otherKeyFields.Length == 0)
{
string msg = "ERROR L57 Database contains broken join information."
+ " thisTable=" + thisTable.TableName
+ " otherTable=" + otherTable.TableName
+ " orphanKey=" + literalOtherKey;
throw new InvalidOperationException(msg);
}
var keyMember = otherKeyFields[0];
otherKeysList.Add(new AttributedColumnMetaDataMember(keyMember, GetColumnAttribute(keyMember),
thisTable.RowType));
}
}
otherKeys = new ReadOnlyCollection<MetaDataMember>(otherKeysList);
otherMember = otherAssociationMember;
}
private void ValidatePrimaryKeyMember(MetaDataMember mm)
{
//if the type is a sub-type, no member in the type can be primary key
if(mm.IsPrimaryKey && this.inheritanceRoot != this && mm.Member.DeclaringType == this.type)
{
throw (Error.PrimaryKeyInSubTypeNotSupported(this.type.Name, mm.Name));
}
}
private void ValidatePrimaryKeyMember(MetaDataMember metaDataMember)
{
// if the type is a sub-type, no member declared in the type can be primary key
if (metaDataMember.IsPrimaryKey && inheritanceRoot != this && metaDataMember.Member.DeclaringType == type)
{
throw Error.PrimaryKeyInSubTypeNotSupported(type.Name, metaDataMember.Name);
}
}
private void ValidatePrimaryKeyMember(MetaDataMember mm)
{
//if the type is a sub-type, no member in the type can be primary key
if (mm.IsPrimaryKey && this.inheritanceRoot != this && mm.Member.DeclaringType == this.type)
{
throw (Error.PrimaryKeyInSubTypeNotSupported(this.type.Name, mm.Name));
}
}
internal AttributedMetaAssociation(AttributedMetaDataMember member, AssociationAttribute attr)
{
thisMember = member;
isMany = TypeSystem.IsSequenceType(thisMember.Type);
var otherEntityType = isMany ? TypeSystem.GetElementType(thisMember.Type) : thisMember.Type;
otherType = thisMember.DeclaringType.Model.GetMetaType(otherEntityType);
thisKey = attr.ThisKey == null ?
thisMember.DeclaringType.IdentityMembers :
MakeKeys(thisMember.DeclaringType, attr.ThisKey);
otherKey = attr.OtherKey == null ? otherType.IdentityMembers : MakeKeys(otherType, attr.OtherKey);
thisKeyIsPrimaryKey = AreEqual(thisKey, thisMember.DeclaringType.IdentityMembers);
otherKeyIsPrimaryKey = AreEqual(otherKey, otherType.IdentityMembers);
isForeignKey = attr.IsForeignKey;
isUnique = attr.IsUnique;
deleteRule = attr.DeleteRule;
deleteOnNull = attr.DeleteOnNull;
// if any key members are not nullable, the association is not nullable
isNullable = true;
foreach (var thisKeyMember in thisKey)
{
if (!thisKeyMember.CanBeNull)
{
isNullable = false;
break;
}
}
// validate DeleteOnNull specification
if (deleteOnNull && (!isForeignKey || isMany || isNullable))
{
throw Error.InvalidDeleteOnNullSpecification(member);
}
if ((thisKey.Count != otherKey.Count) && (thisKey.Count > 0) && (otherKey.Count > 0))
{
throw Error.MismatchedThisKeyOtherKey(member.Name, member.DeclaringType.Name);
}
// determine reverse reference member
foreach (var otherTypePersistentMember in otherType.PersistentDataMembers)
{
var otherTypeMemberAssociationAttribute = ((AttributedMetaModel)thisMember.DeclaringType.Model)
.TryGetAssociationAttribute(otherTypePersistentMember.Member);
if ((otherTypeMemberAssociationAttribute != null) &&
(otherTypePersistentMember != thisMember) &&
(otherTypeMemberAssociationAttribute.Name == attr.Name))
{
otherMember = otherTypePersistentMember;
break;
}
}
//validate the number of ThisKey columns is the same as the number of OtherKey columns
}
public ColumnExpression(TableExpression table, MetaDataMember metaData)
: base(ExpressionType, metaData.Member.GetMemberType()) // memberInfo.GetMemberType())
{
Table = table;
Name = metaData.MappedName;
MemberInfo = metaData.Member;
StorageInfo = metaData.StorageMember;
RequestIndex = -1; // unused
}
internal AttributedMetaAssociation(AttributedMetaDataMember member, AssociationAttribute attr)
{
this.thisMember = member;
this.isMany = TypeSystem.IsSequenceType(this.thisMember.Type);
Type ot = this.isMany ? TypeSystem.GetElementType(this.thisMember.Type) : this.thisMember.Type;
this.otherType = this.thisMember.DeclaringType.Model.GetMetaType(ot);
this.thisKey = (attr.ThisKey != null) ? MakeKeys(this.thisMember.DeclaringType, attr.ThisKey) : this.thisMember.DeclaringType.IdentityMembers;
this.otherKey = (attr.OtherKey != null) ? MakeKeys(otherType, attr.OtherKey) : this.otherType.IdentityMembers;
this.thisKeyIsPrimaryKey = AreEqual(this.thisKey, this.thisMember.DeclaringType.IdentityMembers);
this.otherKeyIsPrimaryKey = AreEqual(this.otherKey, this.otherType.IdentityMembers);
this.isForeignKey = attr.IsForeignKey;
this.isUnique = attr.IsUnique;
this.deleteRule = attr.DeleteRule;
this.deleteOnNull = attr.DeleteOnNull;
// if any key members are not nullable, the association is not nullable
foreach (MetaDataMember mm in thisKey)
{
if (!mm.CanBeNull)
{
this.isNullable = false;
break;
}
}
// validate DeleteOnNull specification
if (deleteOnNull == true)
{
if (!(isForeignKey && !isMany && !isNullable))
{
throw Error.InvalidDeleteOnNullSpecification(member);
}
}
//validate the number of ThisKey columns is the same as the number of OtherKey columns
if (this.thisKey.Count != this.otherKey.Count && this.thisKey.Count > 0 && this.otherKey.Count > 0)
{
throw Error.MismatchedThisKeyOtherKey(member.Name, member.DeclaringType.Name);
}
// determine reverse reference member
foreach (MetaDataMember omm in this.otherType.PersistentDataMembers)
{
AssociationAttribute oattr = (AssociationAttribute)Attribute.GetCustomAttribute(omm.Member, typeof(AssociationAttribute));
if (oattr != null)
{
if (omm != this.thisMember && oattr.Name == attr.Name)
{
this.otherMember = omm;
break;
}
}
}
}
internal AttributedMetaAssociation(AttributedMetaDataMember member, AssociationAttribute attr)
{
this.thisMember = member;
this.isMany = TypeSystem.IsSequenceType(this.thisMember.Type);
Type ot = this.isMany ? TypeSystem.GetElementType(this.thisMember.Type) : this.thisMember.Type;
this.otherType = this.thisMember.DeclaringType.Model.GetMetaType(ot);
this.thisKey = (attr.ThisKey != null) ? MakeKeys(this.thisMember.DeclaringType, attr.ThisKey) : this.thisMember.DeclaringType.IdentityMembers;
this.otherKey = (attr.OtherKey != null) ? MakeKeys(otherType, attr.OtherKey) : this.otherType.IdentityMembers;
this.thisKeyIsPrimaryKey = AreEqual(this.thisKey, this.thisMember.DeclaringType.IdentityMembers);
this.otherKeyIsPrimaryKey = AreEqual(this.otherKey, this.otherType.IdentityMembers);
this.isForeignKey = attr.IsForeignKey;
this.isUnique = attr.IsUnique;
this.deleteRule = attr.DeleteRule;
this.deleteOnNull = attr.DeleteOnNull;
// if any key members are not nullable, the association is not nullable
foreach(MetaDataMember mm in thisKey)
{
if(!mm.CanBeNull)
{
this.isNullable = false;
break;
}
}
// validate DeleteOnNull specification
if(deleteOnNull == true)
{
if(!(isForeignKey && !isMany && !isNullable))
{
throw Error.InvalidDeleteOnNullSpecification(member);
}
}
//validate the number of ThisKey columns is the same as the number of OtherKey columns
if(this.thisKey.Count != this.otherKey.Count && this.thisKey.Count > 0 && this.otherKey.Count > 0)
{
throw Error.MismatchedThisKeyOtherKey(member.Name, member.DeclaringType.Name);
}
// determine reverse reference member
foreach(MetaDataMember omm in this.otherType.PersistentDataMembers)
{
AssociationAttribute oattr = (AssociationAttribute)Attribute.GetCustomAttribute(omm.Member, typeof(AssociationAttribute));
if(oattr != null)
{
if(omm != this.thisMember && oattr.Name == attr.Name)
{
this.otherMember = omm;
break;
}
}
}
}
internal SqlLink(object id, MetaType rowType, Type clrType, ProviderType sqlType, SqlExpression expression, MetaDataMember member, IEnumerable<SqlExpression> keyExpressions, SqlExpression expansion, Expression sourceExpression)
: base(SqlNodeType.Link, clrType, sqlType, sourceExpression) {
this.id = id;
this.rowType = rowType;
this.expansion = expansion;
this.expression = expression;
this.member = member;
this.keyExpressions = new List<SqlExpression>();
if (keyExpressions != null)
this.keyExpressions.AddRange(keyExpressions);
}
public DLinqColumnProvider (TableProvider owner, MetaDataMember meta)
: base (owner)
{
if (owner == null)
throw new ArgumentNullException ("owner");
if (meta == null)
throw new ArgumentNullException ("meta");
// FIXME: fill more
Name = meta.Name;
Nullable = meta.CanBeNull;
}
/// <summary>
/// Returns an AssociationAttribute for the specified association member
/// </summary>
/// <param name="member">The metadata member corresponding to the association member</param>
/// <returns>The Association attribute</returns>
public System.ComponentModel.DataAnnotations.AssociationAttribute CreateAssociationAttribute(MetaDataMember member)
{
MetaAssociation metaAssociation = member.Association;
string associationName = this.GetAssociationName(metaAssociation);
string thisKey = TypeDescriptionContextBase.FormatMemberList(metaAssociation.ThisKey.Select(p => p.Name));
string otherKey = TypeDescriptionContextBase.FormatMemberList(metaAssociation.OtherKey.Select(p => p.Name));
System.ComponentModel.DataAnnotations.AssociationAttribute assocAttrib = new System.ComponentModel.DataAnnotations.AssociationAttribute(associationName, thisKey, otherKey);
assocAttrib.IsForeignKey = metaAssociation.IsForeignKey;
return assocAttrib;
}
internal SqlColumn(Type clrType, ProviderType sqlType, string name, MetaDataMember member, SqlExpression expr, Expression sourceExpression)
: base(SqlNodeType.Column, clrType, sourceExpression) {
if (typeof(Type).IsAssignableFrom(clrType))
throw Error.ArgumentWrongValue("clrType");
this.Name = name;
this.member = member;
this.Expression = expr;
this.Ordinal = -1;
if (sqlType == null)
throw Error.ArgumentNull("sqlType");
this.sqlType = sqlType;
System.Diagnostics.Debug.Assert(sqlType.CanBeColumn);
}
public DLinqColumnProvider(DLinqTableProvider table, MetaDataMember member)
: base(table) {
Member = member;
Name = member.Name;
ColumnType = GetMemberType(member);
IsPrimaryKey = member.IsPrimaryKey;
IsGenerated = member.IsDbGenerated;
_isAssociation = member.IsAssociation;
IsCustomProperty = !member.IsAssociation && Member.DbType == null;
Nullable = Member.IsAssociation ? Member.Association.IsNullable : Member.CanBeNull;
MaxLength = ProcessMaxLength(ColumnType, Member.DbType);
IsSortable = ProcessIsSortable(ColumnType, Member.DbType);
}
private void AddColumn(DLinqDataModelProvider dataModel, MetaDataMember member, PropertyInfo propInfo) {
var publicGetAccessor = propInfo.GetGetMethod();
if (publicGetAccessor == null) {
// the property at least needs to have a public getter, otherwise databinding will not work
return;
}
DLinqColumnProvider column = new DLinqColumnProvider(this, member);
_columns.Add(column);
if (!dataModel.ColumnLookup.ContainsKey(propInfo))
dataModel.ColumnLookup[propInfo] = column;
}
public AttributedMetaAssociation(MemberInfo member, AssociationAttribute attribute, MetaDataMember metaDataMember)
{
_memberInfo = member;
_associationAttribute = attribute;
_thisMember = metaDataMember;
// The bug described here:
// https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=376669
// says that under certain conditions, there's a bug where _otherMember == _thisMember
// Not only is there no point in reproducing a MS bug, it's not as simple as simply setting _otherMember = metaDataMember
Type otherType = _memberInfo.GetFirstInnerReturnType();
string associationName = member.GetAttribute<AssociationAttribute>().Name;
AttributedMetaType ownedMetaType = metaDataMember.DeclaringType.Model.GetMetaType(otherType) as AttributedMetaType;
if ( ownedMetaType == null )
throw new InvalidOperationException("Key in referenced table is of a different SQL MetaData provider");
_otherMember = ownedMetaType.AssociationsLookup[otherType.GetMembers().Where(m => (AttributeNameNullCheck(m.GetAttribute<AssociationAttribute>()) == associationName) && (m != member)).Single()];
}
/// <summary>
/// Given a MetaType and a set of key fields, return the set of MetaDataMembers
/// corresponding to the key.
/// </summary>
protected static ReadOnlyCollection<MetaDataMember> MakeKeys(MetaType mtype, string keyFields)
{
string[] names = keyFields.Split(keySeparators);
MetaDataMember[] members = new MetaDataMember[names.Length];
for(int i = 0; i < names.Length; i++)
{
names[i] = names[i].Trim();
MemberInfo[] rmis = mtype.Type.GetMember(names[i], BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
if(rmis == null || rmis.Length != 1)
{
throw Error.BadKeyMember(names[i], keyFields, mtype.Name);
}
members[i] = mtype.GetDataMember(rmis[0]);
if(members[i] == null)
{
throw Error.BadKeyMember(names[i], keyFields, mtype.Name);
}
}
return new List<MetaDataMember>(members).AsReadOnly();
}
/// <summary>
/// Given a MetaType and a set of key fields, return the set of MetaDataMembers
/// corresponding to the key.
/// </summary>
protected static ReadOnlyCollection <MetaDataMember> MakeKeys(MetaType mtype, string keyFields)
{
string[] names = keyFields.Split(keySeparators);
MetaDataMember[] members = new MetaDataMember[names.Length];
for (int i = 0; i < names.Length; i++)
{
names[i] = names[i].Trim();
MemberInfo[] rmis = mtype.Type.GetMember(names[i], BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
if (rmis == null || rmis.Length != 1)
{
throw Error.BadKeyMember(names[i], keyFields, mtype.Name);
}
members[i] = mtype.GetDataMember(rmis[0]);
if (members[i] == null)
{
throw Error.BadKeyMember(names[i], keyFields, mtype.Name);
}
}
return(new List <MetaDataMember>(members).AsReadOnly());
}
private void InitOther()
{
if (this.otherType == null)
{
Type ot = this.isMany ? TypeSystem.GetElementType(this.thisMember.Type) : this.thisMember.Type;
this.otherType = this.thisMember.DeclaringType.Model.GetMetaType(ot);
System.Diagnostics.Debug.Assert(this.otherType.IsEntity);
this.otherKey = (assocMap.OtherKey != null)
? MakeKeys(this.otherType, this.assocMap.OtherKey)
: this.otherType.IdentityMembers;
this.otherKeyIsPrimaryKey = AreEqual(this.otherKey, this.otherType.IdentityMembers);
foreach (MetaDataMember omm in this.otherType.DataMembers)
{
if (omm.IsAssociation && omm != this.thisMember && omm.MappedName == this.thisMember.MappedName)
{
this.otherMember = omm;
break;
}
}
}
}
public string CreateColomnSQL(
MetaTable table,
MetaDataMember member)
{
StringBuilder sqlText = new StringBuilder();
if (member.IsPrimaryKey)
{
sqlText.AppendFormat("{0} INTEGER PRIMARY KEY AUTOINCREMENT ", member.MappedName);
}
else
{
sqlText.AppendFormat("{0} {1} ", member.MappedName, member.DbType);
}
if (!member.CanBeNull)
{
sqlText.Append("NOT NULL");
}
return sqlText.ToString();
}
public string CreateColomnSQL(
MetaTable table,
MetaDataMember member)
{
StringBuilder sqlText = new StringBuilder();
sqlText.AppendFormat("{0} {1} ", member.MappedName, FilterDBType(member.DbType));
if (member.IsPrimaryKey)
{
sqlText.AppendFormat("IDENTITY(1,1) CONSTRAINT PK_{0} PRIMARY KEY CLUSTERED ", table.TableName);
}
// TODO: Foreign key associations
if (!member.CanBeNull)
{
sqlText.Append("NOT NULL");
}
return sqlText.ToString();
}
public override MetaDataMember GetDataMember(MemberInfo mi)
{
if(mi == null)
throw Error.ArgumentNull("mi");
MetaDataMember mm = null;
if(this.dataMemberMap.TryGetValue(new MetaPosition(mi), out mm))
{
return mm;
}
else
{
// DON'T look to see if we are trying to get a member from an inherited type.
// The calling code should know to look in the inherited type.
if(mi.DeclaringType.IsInterface)
{
throw Error.MappingOfInterfacesMemberIsNotSupported(mi.DeclaringType.Name, mi.Name);
}
else
{ //the member is not mapped in the base class
throw Error.UnmappedClassMember(mi.DeclaringType.Name, mi.Name);
}
}
}
/// <summary>
/// Provides the parameter type for a given data member
/// </summary>
/// <param name="objectToUpsert"></param>
/// <param name="dataMember"></param>
/// <param name="update"></param>
/// <returns></returns>
protected virtual ParameterType GetParameterType(object objectToUpsert, MetaDataMember dataMember, bool update)
{
var memberInfo = dataMember.Member;
// the deal with columns is:
// PK only: explicit for INSERT, criterion for UPDATE
// PK+GEN: implicit/explicit for INSERT, criterion for UPDATE
// GEN only: implicit for both
// -: explicit for both
//
// explicit is input,
// implicit is output,
// criterion is input PK
ParameterType type;
if (dataMember.IsPrimaryKey)
{
if (update)
type = ParameterType.InputPK;
else
{
if (dataMember.IsDbGenerated)
{
if (IsSpecified(objectToUpsert, memberInfo))
type = ParameterType.Input;
else
type = ParameterType.Output;
}
else
type = ParameterType.Input;
}
}
else
{
if (dataMember.IsDbGenerated)
type = ParameterType.Output;
else
type = ParameterType.Input;
}
return type;
}
internal abstract bool IsMemberPendingGeneration(MetaDataMember keyMember);
private static Type GetMemberType(MetaDataMember member) {
Type type = member.Type;
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(EntitySet<>)) {
return type.GetGenericArguments()[0];
}
else {
return type;
}
}
internal SqlMember Member(SqlExpression expr, MetaDataMember member) {
return new SqlMember(member.Type, this.Default(member), expr, member.Member);
}
private void GenerateAssignValue(MetaDataMember mm, LocalBuilder locInstance, SqlExpression expr, LocalBuilder locStoreInMember)
{
MemberInfo m = mm.StorageMember != null ? mm.StorageMember : mm.Member;
if(!IsAssignable(m))
{
throw Error.CannotAssignToMember(m.Name);
}
Type memberType = TypeSystem.GetMemberType(m);
Label labExit = gen.DefineLabel();
bool hasSideEffect = this.HasSideEffect(expr);
if(locStoreInMember != null && !hasSideEffect)
{
gen.Emit(OpCodes.Ldloc, locStoreInMember);
this.GenerateConstInt(0);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brtrue, labExit);
}
this.GenerateExpressionForType(expr, memberType, mm.DeclaringType.IsEntity ? locInstance : null);
LocalBuilder locValue = gen.DeclareLocal(memberType);
gen.Emit(OpCodes.Stloc, locValue);
if(locStoreInMember != null && hasSideEffect)
{
gen.Emit(OpCodes.Ldloc, locStoreInMember);
this.GenerateConstInt(0);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brtrue, labExit);
}
this.GenerateLoadForMemberAccess(locInstance);
gen.Emit(OpCodes.Ldloc, locValue);
this.GenerateStoreMember(m);
gen.MarkLabel(labExit);
}
private bool IsDbGeneratedKeyProjectionOnly(Expression projection, MetaDataMember keyMember) {
NewArrayExpression array = projection as NewArrayExpression;
if (array != null && array.Expressions.Count == 1) {
Expression exp = array.Expressions[0];
while (exp.NodeType == ExpressionType.Convert || exp.NodeType == ExpressionType.ConvertChecked) {
exp = ((UnaryExpression)exp).Operand;
}
MemberExpression mex = exp as MemberExpression;
if (mex != null && mex.Member == keyMember.Member) {
return true;
}
}
return false;
}
private void InitSpecialMember(MetaDataMember mm) {
// Can only have one auto gen member that is also an identity member,
// except if that member is a computed column (since they are implicitly auto gen)
if (mm.IsDbGenerated && mm.IsPrimaryKey && string.IsNullOrEmpty(mm.Expression)) {
if (this.dbGeneratedIdentity != null)
throw Error.TwoMembersMarkedAsPrimaryKeyAndDBGenerated(mm.Member, this.dbGeneratedIdentity.Member);
this.dbGeneratedIdentity = mm;
}
if (mm.IsPrimaryKey && !MappingSystem.IsSupportedIdentityType(mm.Type))
{
throw Error.IdentityClrTypeNotSupported(mm.DeclaringType, mm.Name, mm.Type);
}
if (mm.IsVersion) {
if (this.version != null)
throw Error.TwoMembersMarkedAsRowVersion(mm.Member, this.version.Member);
this.version = mm;
}
if (mm.IsDiscriminator) {
if (this.discriminator!=null)
throw Error.TwoMembersMarkedAsInheritanceDiscriminator(mm.Member, this.discriminator.Member);
this.discriminator = mm;
}
}
private void InitOther() {
if (this.otherType == null) {
Type ot = this.isMany ? TypeSystem.GetElementType(this.thisMember.Type) : this.thisMember.Type;
this.otherType = this.thisMember.DeclaringType.Model.GetMetaType(ot);
System.Diagnostics.Debug.Assert(this.otherType.IsEntity);
this.otherKey = (assocMap.OtherKey != null)
? MakeKeys(this.otherType, this.assocMap.OtherKey)
: this.otherType.IdentityMembers;
this.otherKeyIsPrimaryKey = AreEqual(this.otherKey, this.otherType.IdentityMembers);
foreach (MetaDataMember omm in this.otherType.DataMembers) {
if (omm.IsAssociation && omm != this.thisMember && omm.MappedName == this.thisMember.MappedName) {
this.otherMember = omm;
break;
}
}
}
}
internal ProviderType Default(MetaDataMember member) {
if(member == null)
throw Error.ArgumentNull("member");
if (member.DbType != null) {
return this.typeProvider.Parse(member.DbType);
}
else {
return this.typeProvider.From(member.Type);
}
}
private static string GetDbType(MetaDataMember mm)
{
string dbType = mm.DbType;
if(dbType != null) return dbType;
StringBuilder sb = new StringBuilder();
Type type = mm.Type;
bool isNullable = mm.CanBeNull;
if(type.IsValueType && IsNullable(type))
{
type = type.GetGenericArguments()[0];
}
if(mm.IsVersion)
{
sb.Append("Timestamp");
}
else
{
if(mm.IsPrimaryKey && mm.IsDbGenerated)
{
switch(Type.GetTypeCode(type))
{
case TypeCode.Byte:
sb.Append("TinyInt");
break;
case TypeCode.SByte:
case TypeCode.Int16:
sb.Append("SmallInt");
break;
case TypeCode.Int32:
case TypeCode.UInt16:
sb.Append("Int");
break;
case TypeCode.Int64:
case TypeCode.UInt32:
sb.Append("BigInt");
break;
case TypeCode.UInt64:
case TypeCode.Decimal:
sb.Append("Decimal(20)");
break;
case TypeCode.Object:
if(type == typeof(Guid))
{
sb.Append("UniqueIdentifier");
}
else
{
throw Error.CouldNotDetermineDbGeneratedSqlType(type);
}
break;
}
}
else
{
switch(Type.GetTypeCode(type))
{
case TypeCode.Boolean:
sb.Append("Bit");
break;
case TypeCode.Byte:
sb.Append("TinyInt");
break;
case TypeCode.SByte:
case TypeCode.Int16:
sb.Append("SmallInt");
break;
case TypeCode.Int32:
case TypeCode.UInt16:
sb.Append("Int");
break;
case TypeCode.Int64:
case TypeCode.UInt32:
sb.Append("BigInt");
break;
case TypeCode.UInt64:
sb.Append("Decimal(20)");
break;
case TypeCode.Decimal:
sb.Append("Decimal(29, 4)");
break;
case TypeCode.Double:
sb.Append("Float");
break;
case TypeCode.Single:
sb.Append("Real");
break;
case TypeCode.Char:
sb.Append("NChar(1)");
break;
case TypeCode.String:
sb.Append("NVarChar(4000)");
break;
case TypeCode.DateTime:
sb.Append("DateTime");
break;
case TypeCode.Object:
if(type == typeof(Guid))
{
sb.Append("UniqueIdentifier");
}
else if(type == typeof(byte[]))
{
sb.Append("VarBinary(8000)");
}
else if(type == typeof(char[]))
{
sb.Append("NVarChar(4000)");
}
else if(type == typeof(DateTimeOffset))
{
sb.Append("DateTimeOffset");
}
else if(type == typeof(TimeSpan))
{
sb.Append("Time");
}
else
{
throw Error.CouldNotDetermineSqlType(type);
}
break;
}
}
}
if(!isNullable)
{
sb.Append(" NOT NULL");
}
if(mm.IsPrimaryKey && mm.IsDbGenerated)
{
if(type == typeof(Guid))
{
sb.Append(" DEFAULT NEWID()");
}
else
{
sb.Append(" IDENTITY");
}
}
return sb.ToString();
}
private void GenerateAssignDeferredReference(MetaDataMember mm, LocalBuilder locInstance, SqlExpression expr, LocalBuilder locStoreInMember)
{
MemberInfo m = mm.StorageMember != null ? mm.StorageMember : mm.Member;
Type memberType = TypeSystem.GetMemberType(m);
Diagnostics.Debug.Assert(
memberType.IsGenericType &&
(memberType.GetGenericTypeDefinition() == typeof(EntityRef<>) ||
memberType.GetGenericTypeDefinition() == typeof(Link<>))
);
Label labExit = gen.DefineLabel();
Type argType = typeof(IEnumerable<>).MakeGenericType(memberType.GetGenericArguments());
bool hasSideEffect = this.HasSideEffect(expr);
if(locStoreInMember != null && !hasSideEffect)
{
gen.Emit(OpCodes.Ldloc, locStoreInMember);
this.GenerateConstInt(0);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brtrue, labExit);
}
Type eType = this.GenerateDeferredSource(expr, locInstance);
if(!argType.IsAssignableFrom(eType))
{
throw Error.CouldNotConvert(argType, eType);
}
LocalBuilder locSource = gen.DeclareLocal(eType);
gen.Emit(OpCodes.Stloc, locSource);
if(locStoreInMember != null && hasSideEffect)
{
gen.Emit(OpCodes.Ldloc, locStoreInMember);
this.GenerateConstInt(0);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brtrue, labExit);
}
this.GenerateLoadForMemberAccess(locInstance);
gen.Emit(OpCodes.Ldloc, locSource);
ConstructorInfo ci = memberType.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] { argType }, null);
Diagnostics.Debug.Assert(ci != null);
gen.Emit(OpCodes.Newobj, ci);
this.GenerateStoreMember(m);
gen.MarkLabel(labExit);
}
private void GenerateAssignEntitySet(MetaDataMember mm, LocalBuilder locInstance, SqlExpression expr, LocalBuilder locStoreInMember)
{
MemberInfo m = mm.StorageMember != null ? mm.StorageMember : mm.Member;
Type memberType = TypeSystem.GetMemberType(m);
Diagnostics.Debug.Assert(memberType.IsGenericType && memberType.GetGenericTypeDefinition() == typeof(EntitySet<>));
Label labExit = gen.DefineLabel();
Type argType = typeof(IEnumerable<>).MakeGenericType(memberType.GetGenericArguments());
bool hasSideEffect = this.HasSideEffect(expr);
if(locStoreInMember != null && !hasSideEffect)
{
gen.Emit(OpCodes.Ldloc, locStoreInMember);
this.GenerateConstInt(0);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brtrue, labExit);
}
Type eType = this.Generate(expr, mm.DeclaringType.IsEntity ? locInstance : null);
Diagnostics.Debug.Assert(argType.IsAssignableFrom(eType));
LocalBuilder locSource = gen.DeclareLocal(eType);
gen.Emit(OpCodes.Stloc, locSource);
if(locStoreInMember != null && hasSideEffect)
{
gen.Emit(OpCodes.Ldloc, locStoreInMember);
this.GenerateConstInt(0);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brtrue, labExit);
}
// if member is directly writeable, check for null entityset
if(m is FieldInfo || (m is PropertyInfo && ((PropertyInfo)m).CanWrite))
{
Label labFetch = gen.DefineLabel();
this.GenerateLoadForMemberAccess(locInstance);
this.GenerateLoadMember(m);
gen.Emit(OpCodes.Ldnull);
gen.Emit(OpCodes.Ceq);
gen.Emit(OpCodes.Brfalse, labFetch);
// create new entity set
this.GenerateLoadForMemberAccess(locInstance);
ConstructorInfo ci = memberType.GetConstructor(System.Type.EmptyTypes);
Diagnostics.Debug.Assert(ci != null);
gen.Emit(OpCodes.Newobj, ci);
this.GenerateStoreMember(m);
gen.MarkLabel(labFetch);
}
// set the source
this.GenerateLoadForMemberAccess(locInstance);
this.GenerateLoadMember(m);
gen.Emit(OpCodes.Ldloc, locSource);
MethodInfo miAssign = memberType.GetMethod("Assign", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] { argType }, null);
Diagnostics.Debug.Assert(miAssign != null);
gen.Emit(GetMethodCallOpCode(miAssign), miAssign);
gen.MarkLabel(labExit);
}
private SqlExpression GetIdentityExpression(MetaDataMember id, bool isOutputFromInsert) {
if (isOutputFromInsert) {
return new SqlVariable(id.Type, sql.Default(id), "@id", this.dominatingExpression);
}
else {
ProviderType sqlType = sql.Default(id);
if (!IsLegalIdentityType(sqlType.GetClosestRuntimeType())) {
throw Error.InvalidDbGeneratedType(sqlType.ToQueryString());
}
if ((this.converterStrategy & ConverterStrategy.CanUseScopeIdentity) != 0) {
return new SqlVariable(typeof(decimal), typeProvider.From(typeof(decimal)), "SCOPE_IDENTITY()", this.dominatingExpression);
}
else {
return new SqlVariable(typeof(decimal), typeProvider.From(typeof(decimal)), "@@IDENTITY", this.dominatingExpression);
}
}
}
private void GenerateMemberAssignment(MetaDataMember mm, LocalBuilder locInstance, SqlExpression expr, LocalBuilder locStoreInMember)
{
MemberInfo m = mm.StorageMember != null ? mm.StorageMember : mm.Member;
Type memberType = TypeSystem.GetMemberType(m);
// check for deferrable member & deferred source expression
if(IsDeferrableExpression(expr) &&
(this.compiler.Services.Context.LoadOptions == null ||
!this.compiler.Services.Context.LoadOptions.IsPreloaded(mm.Member))
)
{
// we can only defer deferrable members
if(mm.IsDeferred)
{
// determine at runtime if we are allowed to defer load
gen.Emit(OpCodes.Ldarg_0);
Type orbType = typeof(ObjectMaterializer<>).MakeGenericType(this.compiler.DataReaderType);
PropertyInfo piCanDeferLoad = orbType.GetProperty("CanDeferLoad");
Diagnostics.Debug.Assert(piCanDeferLoad != null);
MethodInfo miCanDeferLoad = piCanDeferLoad.GetGetMethod();
gen.Emit(GetMethodCallOpCode(miCanDeferLoad), miCanDeferLoad);
// if we can't defer load then jump over the code that does the defer loading
Label labEndDeferLoad = gen.DefineLabel();
gen.Emit(OpCodes.Brfalse, labEndDeferLoad);
// execute the defer load operation
if(memberType.IsGenericType)
{
Type genType = memberType.GetGenericTypeDefinition();
if(genType == typeof(EntitySet<>))
{
this.GenerateAssignDeferredEntitySet(mm, locInstance, expr, locStoreInMember);
}
else if(genType == typeof(EntityRef<>) || genType == typeof(Link<>))
{
this.GenerateAssignDeferredReference(mm, locInstance, expr, locStoreInMember);
}
else
{
throw Error.DeferredMemberWrongType();
}
}
else
{
throw Error.DeferredMemberWrongType();
}
gen.MarkLabel(labEndDeferLoad);
}
else
{
// behavior for non-deferred members w/ deferrable expressions is to load nothing
}
}
else if(memberType.IsGenericType && memberType.GetGenericTypeDefinition() == typeof(EntitySet<>))
{
this.GenerateAssignEntitySet(mm, locInstance, expr, locStoreInMember);
}
else
{
this.GenerateAssignValue(mm, locInstance, expr, locStoreInMember);
}
}