// SMI V220 ctor.
internal SmiExtendedMetaData(
SqlDbType dbType,
long maxLength,
byte precision,
byte scale,
long localeId,
SqlCompareOptions compareOptions,
string udtAssemblyQualifiedName,
bool isMultiValued,
IList <SmiExtendedMetaData> fieldMetaData,
SmiMetaDataPropertyCollection extendedProperties,
string name,
string typeSpecificNamePart1,
string typeSpecificNamePart2,
string typeSpecificNamePart3) :
base(dbType,
maxLength,
precision,
scale,
localeId,
compareOptions,
udtAssemblyQualifiedName,
isMultiValued,
fieldMetaData,
extendedProperties)
{
Debug.Assert(null == name || MaxNameLength >= name.Length, "Name is too long");
_name = name;
_typeSpecificNamePart1 = typeSpecificNamePart1;
_typeSpecificNamePart2 = typeSpecificNamePart2;
_typeSpecificNamePart3 = typeSpecificNamePart3;
}
// SMI V220 ctor.
internal SmiQueryMetaData(SqlDbType dbType,
long maxLength,
byte precision,
byte scale,
long localeId,
SqlCompareOptions compareOptions,
bool isMultiValued,
IList <SmiExtendedMetaData> fieldMetaData,
SmiMetaDataPropertyCollection extendedProperties,
string name,
string typeSpecificNamePart1,
string typeSpecificNamePart2,
string typeSpecificNamePart3,
SqlBoolean isKey
) :
base(dbType,
maxLength,
precision,
scale,
localeId,
compareOptions,
isMultiValued,
fieldMetaData,
extendedProperties,
name,
typeSpecificNamePart1,
typeSpecificNamePart2,
typeSpecificNamePart3,
isKey
)
{
}
// SMI V200 ctor.
internal SmiParameterMetaData(
SqlDbType dbType,
long maxLength,
byte precision,
byte scale,
long localeId,
SqlCompareOptions compareOptions,
bool isMultiValued,
IList <SmiExtendedMetaData> fieldMetaData,
SmiMetaDataPropertyCollection extendedProperties,
string name,
string typeSpecificNamePart1,
string typeSpecificNamePart2,
string typeSpecificNamePart3,
ParameterDirection direction) :
this(dbType,
maxLength,
precision,
scale,
localeId,
compareOptions,
null,
isMultiValued,
fieldMetaData,
extendedProperties,
name,
typeSpecificNamePart1,
typeSpecificNamePart2,
typeSpecificNamePart3,
direction)
{
}
// Internal setter to be used by constructors only! Modifies state!
private void SetDefaultsForType(SqlDbType dbType)
{
SmiMetaData smdDflt = GetDefaultForType(dbType);
_databaseType = dbType;
_maxLength = smdDflt.MaxLength;
_precision = smdDflt.Precision;
_scale = smdDflt.Scale;
_localeId = smdDflt.LocaleId;
_compareOptions = smdDflt.CompareOptions;
_isMultiValued = smdDflt._isMultiValued;
_fieldMetaData = smdDflt._fieldMetaData; // This is ok due to immutability
_extendedProperties = smdDflt._extendedProperties; // This is ok due to immutability
}
// Private constructor used only to initialize default instance array elements.
// DO NOT EXPOSE OUTSIDE THIS CLASS!
private SmiMetaData(
SqlDbType sqlDbType,
long maxLength,
byte precision,
byte scale,
SqlCompareOptions compareOptions)
{
_databaseType = sqlDbType;
_maxLength = maxLength;
_precision = precision;
_scale = scale;
_compareOptions = compareOptions;
// defaults are the same for all types for the following attributes.
_localeId = 0;
_isMultiValued = false;
_fieldMetaData = s_emptyFieldList;
_extendedProperties = SmiMetaDataPropertyCollection.EmptyInstance;
}
// SMI V200 ctor.
internal SmiMetaData(
SqlDbType dbType,
long maxLength,
byte precision,
byte scale,
long localeId,
SqlCompareOptions compareOptions,
bool isMultiValued,
IList <SmiExtendedMetaData> fieldTypes,
SmiMetaDataPropertyCollection extendedProperties)
:
this(dbType,
maxLength,
precision,
scale,
localeId,
compareOptions,
null,
isMultiValued,
fieldTypes,
extendedProperties)
{
}
// SMI V220 ctor.
internal SmiParameterMetaData(
SqlDbType dbType,
long maxLength,
byte precision,
byte scale,
long localeId,
SqlCompareOptions compareOptions,
string udtAssemblyQualifiedName,
bool isMultiValued,
IList <SmiExtendedMetaData> fieldMetaData,
SmiMetaDataPropertyCollection extendedProperties,
string name,
string typeSpecificNamePart1,
string typeSpecificNamePart2,
string typeSpecificNamePart3,
ParameterDirection direction) :
base(dbType,
maxLength,
precision,
scale,
localeId,
compareOptions,
udtAssemblyQualifiedName,
isMultiValued,
fieldMetaData,
extendedProperties,
name,
typeSpecificNamePart1,
typeSpecificNamePart2,
typeSpecificNamePart3)
{
Debug.Assert(ParameterDirection.Input == direction ||
ParameterDirection.Output == direction ||
ParameterDirection.InputOutput == direction ||
ParameterDirection.ReturnValue == direction, "Invalid direction: " + direction);
_direction = direction;
}
// SMI V220 ctor.
internal SmiMetaData(
SqlDbType dbType,
long maxLength,
byte precision,
byte scale,
long localeId,
SqlCompareOptions compareOptions,
string udtAssemblyQualifiedName,
bool isMultiValued,
IList <SmiExtendedMetaData> fieldTypes,
SmiMetaDataPropertyCollection extendedProperties)
{
Debug.Assert(IsSupportedDbType(dbType), "Invalid SqlDbType: " + dbType);
SetDefaultsForType(dbType);
switch (dbType)
{
case SqlDbType.BigInt:
case SqlDbType.Bit:
case SqlDbType.DateTime:
case SqlDbType.Float:
case SqlDbType.Image:
case SqlDbType.Int:
case SqlDbType.Money:
case SqlDbType.Real:
case SqlDbType.SmallDateTime:
case SqlDbType.SmallInt:
case SqlDbType.SmallMoney:
case SqlDbType.Timestamp:
case SqlDbType.TinyInt:
case SqlDbType.UniqueIdentifier:
case SqlDbType.Variant:
case SqlDbType.Xml:
case SqlDbType.Date:
break;
case SqlDbType.Binary:
case SqlDbType.VarBinary:
_maxLength = maxLength;
break;
case SqlDbType.Char:
case SqlDbType.NChar:
case SqlDbType.NVarChar:
case SqlDbType.VarChar:
// locale and compare options are not validated until they get to the server
_maxLength = maxLength;
_localeId = localeId;
_compareOptions = compareOptions;
break;
case SqlDbType.NText:
case SqlDbType.Text:
_localeId = localeId;
_compareOptions = compareOptions;
break;
case SqlDbType.Decimal:
Debug.Assert(MinPrecision <= precision && SqlDecimal.MaxPrecision >= precision, "Invalid precision: " + precision);
Debug.Assert(MinScale <= scale && SqlDecimal.MaxScale >= scale, "Invalid scale: " + scale);
Debug.Assert(scale <= precision, "Precision: " + precision + " greater than scale: " + scale);
_precision = precision;
_scale = scale;
_maxLength = s_maxLenFromPrecision[precision - 1];
break;
case SqlDbType.Udt:
throw System.Data.Common.Custom.ADP.DbTypeNotSupported(SqlDbType.Udt.ToString());
case SqlDbType.Structured:
if (null != fieldTypes)
{
_fieldMetaData = new System.Collections.ObjectModel.ReadOnlyCollection <SmiExtendedMetaData>(fieldTypes);
}
_isMultiValued = isMultiValued;
_maxLength = _fieldMetaData.Count;
break;
case SqlDbType.Time:
Debug.Assert(MinScale <= scale && scale <= MaxTimeScale, "Invalid time scale: " + scale);
_scale = scale;
_maxLength = 5 - s_maxVarTimeLenOffsetFromScale[scale];
break;
case SqlDbType.DateTime2:
Debug.Assert(MinScale <= scale && scale <= MaxTimeScale, "Invalid time scale: " + scale);
_scale = scale;
_maxLength = 8 - s_maxVarTimeLenOffsetFromScale[scale];
break;
case SqlDbType.DateTimeOffset:
Debug.Assert(MinScale <= scale && scale <= MaxTimeScale, "Invalid time scale: " + scale);
_scale = scale;
_maxLength = 10 - s_maxVarTimeLenOffsetFromScale[scale];
break;
default:
Debug.Assert(false, "How in the world did we get here? :" + dbType);
break;
}
if (null != extendedProperties)
{
extendedProperties.SetReadOnly();
_extendedProperties = extendedProperties;
}
// properties and fields must meet the following conditions at this point:
// 1) not null
// 2) read only
// 3) same number of columns in each list (0 count acceptable for properties that are "unused")
Debug.Assert(null != _extendedProperties && _extendedProperties.IsReadOnly, "SmiMetaData.ctor: _extendedProperties is " + (null != _extendedProperties ? "writeable" : "null"));
Debug.Assert(null != _fieldMetaData && _fieldMetaData.IsReadOnly, "SmiMetaData.ctor: _fieldMetaData is " + (null != _fieldMetaData ? "writeable" : "null"));
#if DEBUG
((SmiDefaultFieldsProperty)_extendedProperties[SmiPropertySelector.DefaultFields]).CheckCount(_fieldMetaData.Count);
((SmiUniqueKeyProperty)_extendedProperties[SmiPropertySelector.UniqueKey]).CheckCount(_fieldMetaData.Count);
#endif
}
static SmiMetaDataPropertyCollection()
{
EmptyInstance = new SmiMetaDataPropertyCollection();
EmptyInstance.SetReadOnly();
}