/// <summary>
/// 初始化属性映射信息。
/// </summary>
/// <param name="info">实体映射信息。</param>
/// <param name="propertyInfo">属性信息。</param>
/// <returns></returns>
private static PropertyMapInfo InitPropertyInfo(PropertyMapInfo info, PropertyInfo propertyInfo)
{
if (info == null)
{
info = new PropertyMapInfo();
}
if (string.IsNullOrEmpty(info.FieldName))
{
info.FieldName = propertyInfo.Name;
}
info.ReflectionInfo = propertyInfo;
return(info);
}
/// <summary>
/// 根据映射特性设置属性的映射信息。
/// </summary>
/// <param name="mapping"></param>
/// <param name="mapInfo"></param>
private static void InitMapInfo(PropertyMappingAttribute mapping, PropertyMapInfo mapInfo)
{
mapInfo.FieldName = mapping.ColumnName;
mapInfo.Description = mapping.Description;
mapInfo.GenerateType = mapping.GenerateType;
if (mapping.GetFlag(PropertyMappingAttribute.SetMark.DataType))
{
mapInfo.DataType = mapping.DataType;
}
if (mapping.GetFlag(PropertyMappingAttribute.SetMark.IsPrimaryKey))
{
mapInfo.IsPrimaryKey = mapping.IsPrimaryKey;
}
if (mapping.GetFlag(PropertyMappingAttribute.SetMark.IsDeletedKey))
{
mapInfo.IsDeletedKey = mapping.IsDeletedKey;
}
if (mapping.DefaultValue != null)
{
mapInfo.DefaultValue = PropertyValue.NewValue(mapping.DefaultValue, mapInfo.ReflectionInfo.PropertyType);
mapInfo.DefaultValueFormatter = mapping.DefaultValueFormatter;
}
if (mapping.GetFlag(PropertyMappingAttribute.SetMark.Length))
{
mapInfo.Length = mapping.Length;
}
if (mapping.GetFlag(PropertyMappingAttribute.SetMark.Precision))
{
mapInfo.Precision = mapping.Precision;
}
if (mapping.GetFlag(PropertyMappingAttribute.SetMark.Scale))
{
mapInfo.Scale = mapping.Scale;
}
}
/// <summary>
/// 注册基本的实体属性。
/// </summary>
/// <param name="propertyName">属性名称。</param>
/// <param name="propertyType">属性类型。</param>
/// <param name="entityType">实体类型。</param>
/// <param name="info">属性映射信息。</param>
/// <returns>一个 <see cref="IProperty"/> 对象。</returns>
public static IProperty RegisterProperty(string propertyName, Type propertyType, Type entityType, PropertyMapInfo info = null)
{
var propertyInfo = entityType.GetProperty(propertyName);
if (propertyInfo == null)
{
throw new PropertyNotFoundException(propertyName);
}
return(RegisterProperty(propertyInfo, entityType, info));
}
/// <summary>
/// 注册基本的实体属性。
/// </summary>
/// <typeparam name="TEntity">实体的类型。</typeparam>
/// <param name="expression">指定注册的属性的表达式。</param>
/// <param name="info">属性映射信息。</param>
/// <returns>一个 <see cref="IProperty"/> 对象。</returns>
public static IProperty RegisterProperty <TEntity>(Expression <Func <TEntity, object> > expression, PropertyMapInfo info = null) where TEntity : IEntity
{
var propertyInfo = PropertySearchVisitor.FindProperty(expression);
if (propertyInfo == null)
{
throw new InvalidOperationException(SR.GetString(SRKind.InvalidRegisterExpression));
}
return(RegisterProperty(propertyInfo, typeof(TEntity), info));
}
/// <summary>
/// 注册基本的实体属性。
/// </summary>
/// <param name="propertyInfo">属性信息。</param>
/// <param name="entityType">实体类型。</param>
/// <param name="info">属性映射信息。</param>
/// <returns>一个 <see cref="IProperty"/> 对象。</returns>
private static IProperty RegisterProperty(PropertyInfo propertyInfo, Type entityType, PropertyMapInfo info = null)
{
var property = new GeneralProperty
{
Name = propertyInfo.Name,
Type = propertyInfo.PropertyType,
EntityType = entityType,
Info = InitPropertyInfo(info, propertyInfo)
};
return(RegisterProperty(entityType, property));
}