本文整理汇总了C#中MappingSchema.GetAttributes方法的典型用法代码示例。如果您正苦于以下问题：C# MappingSchema.GetAttributes方法的具体用法？C# MappingSchema.GetAttributes怎么用？C# MappingSchema.GetAttributes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.GetAttributes方法的5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: GetDefaultMappingFromEnumType
public static Type GetDefaultMappingFromEnumType(MappingSchema mappingSchema, Type enumType)
{
var type = enumType.ToNullableUnderlying();
if (!type.IsEnumEx())
return null;
var fields =
(
from f in type.GetFieldsEx()
where (f.Attributes & EnumField) == EnumField
let attrs = mappingSchema.GetAttributes<MapValueAttribute>(f, a => a.Configuration)
select
(
from a in attrs
where a.Configuration == attrs[0].Configuration
orderby !a.IsDefault
select a
).ToList()
).ToList();
Type defaultType = null;
if (fields.All(attrs => attrs.Count != 0))
{
var attr = fields.FirstOrDefault(attrs => attrs[0].Value != null);
if (attr != null)
{
var valueType = attr[0].Value.GetType();
if (fields.All(attrs => attrs[0].Value == null || attrs[0].Value.GetType() == valueType))
defaultType = valueType;
}
}
if (defaultType == null)
defaultType = Enum.GetUnderlyingType(type);
if (enumType.IsNullable() && !defaultType.IsClassEx() && !defaultType.IsNullable())
defaultType = typeof(Nullable<>).MakeGenericType(defaultType);
return defaultType;
}示例2: GetFromEnum
static Expression GetFromEnum(Type @from, Type to, Expression expression, MappingSchema mappingSchema)
{
if (from.IsEnumEx())
{
var fromFields = @from.GetFieldsEx()
.Where (f => (f.Attributes & EnumField) == EnumField)
.Select(f => new EnumValues { Field = f, Attrs = mappingSchema.GetAttributes<MapValueAttribute>(f, a => a.Configuration) })
.ToList();
{
var toTypeFields = fromFields
.Select(f => new { f.Field, Attrs = f.Attrs
.OrderBy(a =>
{
var idx = a.Configuration == null ?
int.MaxValue :
Array.IndexOf(mappingSchema.ConfigurationList, a.Configuration);
return idx < 0 ? int.MaxValue : idx;
})
.ThenBy(a => !a.IsDefault)
.ThenBy(a => a.Value == null)
.FirstOrDefault(a => a.Value == null || a.Value.GetType() == to) })
.ToList();
if (toTypeFields.All(f => f.Attrs != null))
{
var cases = toTypeFields.Select(f => Expression.SwitchCase(
Expression.Constant(f.Attrs.Value ?? mappingSchema.GetDefaultValue(to), to),
Expression.Constant(Enum.Parse(@from, f.Field.Name, false))));
var expr = Expression.Switch(
expression,
Expression.Convert(
Expression.Call(_defaultConverter,
Expression.Convert(expression, typeof(object)),
Expression.Constant(to)),
to),
cases.ToArray());
return expr;
}
if (toTypeFields.Any(f => f.Attrs != null))
{
var field = toTypeFields.First(f => f.Attrs == null);
return Expression.Convert(
Expression.Call(
_throwLinqToDBConvertException,
Expression.Constant(
"Inconsistent mapping. '{0}.{1}' does not have MapValue(<{2}>) attribute."
.Args(from.FullName, field.Field.Name, to.FullName))),
to);
}
}
if (to.IsEnumEx())
{
var toFields = to.GetFieldsEx()
.Where (f => (f.Attributes & EnumField) == EnumField)
.Select(f => new EnumValues { Field = f, Attrs = mappingSchema.GetAttributes<MapValueAttribute>(f, a => a.Configuration) })
.ToList();
var dic = new Dictionary<EnumValues,EnumValues>();
var cl = mappingSchema.ConfigurationList.Concat(new[] { "", null }).Select((c,i) => new { c, i }).ToArray();
foreach (var toField in toFields)
{
if (toField.Attrs == null || toField.Attrs.Length == 0)
return null;
var toAttr = toField.Attrs.First();
toAttr = toField.Attrs.FirstOrDefault(a => a.Configuration == toAttr.Configuration && a.IsDefault) ?? toAttr;
var fromAttrs = fromFields.Where(f => f.Attrs.Any(a =>
a.Value == null ? toAttr.Value == null : a.Value.Equals(toAttr.Value))).ToList();
if (fromAttrs.Count == 0)
return null;
if (fromAttrs.Count > 1)
{
var fattrs =
from f in fromAttrs
select new {
f,
a = f.Attrs.First(a => a.Value == null ? toAttr.Value == null : a.Value.Equals(toAttr.Value))
} into fa
from c in cl
where fa.a.Configuration == c.c
orderby c.i
select fa.f;
fromAttrs = fattrs.Take(1).ToList();
}
var prev = dic
.Where (a => a.Value.Field == fromAttrs[0].Field)
.Select(pair => new { To = pair.Key, From = pair.Value })
//.........这里部分代码省略.........
示例3: AttributeTest3
public void AttributeTest3()
{
var ms = new MappingSchema("3", new MappingSchema("2"));
var attrs = ms.GetAttributes<MapValueAttribute>(
MemberHelper.FieldOf<AttrTest>(a => a.Field1),
a => a.Configuration);
Assert.That(attrs.Length, Is.EqualTo(3));
Assert.That(attrs[0].Value, Is.EqualTo(3));
Assert.That(attrs[1].Value, Is.EqualTo(2));
Assert.That(attrs[2].Value, Is.EqualTo(1));
}示例4: AttributeTest8
public void AttributeTest8()
{
var ms = new MappingSchema("3", new MappingSchema("2"))
{
MetadataReader = new XmlAttributeReader(new MemoryStream(Encoding.UTF8.GetBytes(Data)))
};
var attrs = ms.GetAttributes<MapValueAttribute>(
MemberHelper.FieldOf<AttrTest>(a => a.Field1),
a => a.Configuration);
Assert.That(attrs.Length, Is.EqualTo(4));
Assert.That(attrs[0].Value, Is.EqualTo(30));
Assert.That(attrs[1].Value, Is.EqualTo(3));
Assert.That(attrs[2].Value, Is.EqualTo(2));
Assert.That(attrs[3].Value, Is.EqualTo(1));
}示例5: GetTable
private TableName GetTable(MappingSchema mappingSchema, Type dataObjectType)
{
var attribute = mappingSchema
.GetAttributes<TableAttribute>(dataObjectType)
.FirstOrDefault();
var tableName = attribute?.Name ?? dataObjectType.Name;
var schemaName = attribute?.Schema;
return new TableName(tableName, schemaName);
}