本文整理汇总了C#中MappingSchema.GetCanBeNull方法的典型用法代码示例。如果您正苦于以下问题：C# MappingSchema.GetCanBeNull方法的具体用法？C# MappingSchema.GetCanBeNull怎么用？C# MappingSchema.GetCanBeNull使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MappingSchema的用法示例。
在下文中一共展示了MappingSchema.GetCanBeNull方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ColumnDescriptor
public ColumnDescriptor(MappingSchema mappingSchema, ColumnAttribute columnAttribute, MemberAccessor memberAccessor)
{
MappingSchema = mappingSchema;
MemberAccessor = memberAccessor;
MemberInfo = memberAccessor.MemberInfo;
if (MemberInfo.IsFieldEx())
{
var fieldInfo = (FieldInfo)MemberInfo;
MemberType = fieldInfo.FieldType;
}
else if (MemberInfo.IsPropertyEx())
{
var propertyInfo = (PropertyInfo)MemberInfo;
MemberType = propertyInfo.PropertyType;
}
MemberName = columnAttribute.MemberName ?? MemberInfo.Name;
ColumnName = columnAttribute.Name ?? MemberInfo.Name;
Storage = columnAttribute.Storage;
PrimaryKeyOrder = columnAttribute.PrimaryKeyOrder;
IsDiscriminator = columnAttribute.IsDiscriminator;
DataType = columnAttribute.DataType;
DbType = columnAttribute.DbType;
CreateFormat = columnAttribute.CreateFormat;
if (columnAttribute.HasLength ()) Length = columnAttribute.Length;
if (columnAttribute.HasPrecision()) Precision = columnAttribute.Precision;
if (columnAttribute.HasScale ()) Scale = columnAttribute.Scale;
if (Storage == null)
{
StorageType = MemberType;
StorageInfo = MemberInfo;
}
else
{
var expr = Expression.PropertyOrField(Expression.Constant(null, MemberInfo.DeclaringType), Storage);
StorageType = expr.Type;
StorageInfo = expr.Member;
}
var defaultCanBeNull = false;
if (columnAttribute.HasCanBeNull())
CanBeNull = columnAttribute.CanBeNull;
else
{
var na = mappingSchema.GetAttribute<NullableAttribute>(MemberInfo, attr => attr.Configuration);
if (na != null)
{
CanBeNull = na.CanBeNull;
}
else
{
CanBeNull = mappingSchema.GetCanBeNull(MemberType);
defaultCanBeNull = true;
}
}
if (columnAttribute.HasIsIdentity())
IsIdentity = columnAttribute.IsIdentity;
else
{
var a = mappingSchema.GetAttribute<IdentityAttribute>(MemberInfo, attr => attr.Configuration);
if (a != null)
IsIdentity = true;
}
SkipOnInsert = columnAttribute.HasSkipOnInsert() ? columnAttribute.SkipOnInsert : IsIdentity;
SkipOnUpdate = columnAttribute.HasSkipOnUpdate() ? columnAttribute.SkipOnUpdate : IsIdentity;
if (defaultCanBeNull && IsIdentity)
CanBeNull = false;
if (columnAttribute.HasIsPrimaryKey())
IsPrimaryKey = columnAttribute.IsPrimaryKey;
else
{
var a = mappingSchema.GetAttribute<PrimaryKeyAttribute>(MemberInfo, attr => attr.Configuration);
if (a != null)
{
IsPrimaryKey = true;
PrimaryKeyOrder = a.Order;
}
}
if (DbType == null || DataType == DataType.Undefined)
{
var a = mappingSchema.GetAttribute<DataTypeAttribute>(MemberInfo, attr => attr.Configuration);
if (a != null)
{
if (DbType == null)
DbType = a.DbType;
if (DataType == DataType.Undefined && a.DataType.HasValue)
DataType = a.DataType.Value;
//.........这里部分代码省略.........
示例2: ColumnDescriptor
public ColumnDescriptor(MappingSchema mappingSchema, ColumnAttribute columnAttribute, MemberAccessor memberAccessor)
{
MappingSchema = mappingSchema;
MemberAccessor = memberAccessor;
MemberInfo = memberAccessor.MemberInfo;
if (MemberInfo.IsFieldEx())
{
var fieldInfo = (FieldInfo)MemberInfo;
MemberType = fieldInfo.FieldType;
}
else if (MemberInfo.IsPropertyEx())
{
var propertyInfo = (PropertyInfo)MemberInfo;
MemberType = propertyInfo.PropertyType;
}
MemberName = columnAttribute.MemberName ?? MemberInfo.Name;
ColumnName = columnAttribute.Name ?? MemberInfo.Name;
Storage = columnAttribute.Storage;
PrimaryKeyOrder = columnAttribute.PrimaryKeyOrder;
IsDiscriminator = columnAttribute.IsDiscriminator;
DataType = columnAttribute.DataType;
DbType = columnAttribute.DbType;
Length = columnAttribute.Length;
Precision = columnAttribute.Precision;
Scale = columnAttribute.Scale;
var defaultCanBeNull = false;
if (columnAttribute.HasCanBeNull())
CanBeNull = columnAttribute.CanBeNull;
else
{
var na = mappingSchema.GetAttribute<NullableAttribute>(MemberInfo, attr => attr.Configuration);
if (na != null)
{
CanBeNull = na.CanBeNull;
}
else
{
CanBeNull = mappingSchema.GetCanBeNull(MemberType);
defaultCanBeNull = true;
}
}
if (columnAttribute.HasIsIdentity())
IsIdentity = columnAttribute.IsIdentity;
else
{
var a = mappingSchema.GetAttribute<IdentityAttribute>(MemberInfo, attr => attr.Configuration);
if (a != null)
IsIdentity = true;
}
SkipOnInsert = columnAttribute.HasSkipOnInsert() ? columnAttribute.SkipOnInsert : IsIdentity;
SkipOnUpdate = columnAttribute.HasSkipOnUpdate() ? columnAttribute.SkipOnUpdate : IsIdentity;
if (defaultCanBeNull && IsIdentity)
CanBeNull = false;
if (columnAttribute.HasIsPrimaryKey())
IsPrimaryKey = columnAttribute.IsPrimaryKey;
else
{
var a = mappingSchema.GetAttribute<PrimaryKeyAttribute>(MemberInfo, attr => attr.Configuration);
if (a != null)
{
IsPrimaryKey = true;
PrimaryKeyOrder = a.Order;
}
}
}