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TableFluent.cs
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TableFluent.cs
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using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
namespace FreeSql.DataAnnotations
{
public class TableFluent
{
public TableFluent(Type entityType, TableAttribute table)
{
_entityType = entityType;
_properties = _entityType.GetPropertiesDictIgnoreCase();
_table = table;
}
Type _entityType;
Dictionary<string, PropertyInfo> _properties;
TableAttribute _table;
/// <summary>
/// 数据库表名
/// </summary>
public TableFluent Name(string value)
{
_table.Name = value;
return this;
}
/// <summary>
/// 指定数据库旧的表名,修改实体命名时,同时设置此参数为修改之前的值,CodeFirst才可以正确修改数据库表;否则将视为【创建新表】
/// </summary>
public TableFluent OldName(string value)
{
_table.OldName = value;
return this;
}
/// <summary>
/// 禁用 CodeFirst 同步结构迁移
/// </summary>
public TableFluent DisableSyncStructure(bool value)
{
_table.DisableSyncStructure = value;
return this;
}
/// <summary>
/// 格式:属性名=开始时间(递增)<para></para>
/// 按年分表:[Table(Name = "log_{yyyy}", AsTable = "create_time=2022-1-1(1 year)")]<para></para>
/// 按月分表:[Table(Name = "log_{yyyyMM}", AsTable = "create_time=2022-5-1(1 month)")]<para></para>
/// 按日分表:[Table(Name = "log_{yyyyMMdd}", AsTable = "create_time=2022-5-1(5 day)")]<para></para>
/// 按时分表:[Table(Name = "log_{yyyyMMddHH}", AsTable = "create_time=2022-5-1(6 hour)")]<para></para>
/// </summary>
public TableFluent AsTable(string value)
{
_table.AsTable = value;
return this;
}
public ColumnFluent Property(string proto)
{
if (_properties.TryGetValue(proto, out var tryProto) == false) throw new KeyNotFoundException(CoreStrings.NotFound_PropertyName(proto));
var col = _table._columns.GetOrAdd(tryProto.Name, name => new ColumnAttribute { });
return new ColumnFluent(col, tryProto, _entityType);
}
/// <summary>
/// 导航关系Fluent,与 NavigateAttribute 对应
/// </summary>
/// <param name="proto"></param>
/// <param name="bind"></param>
/// <param name="manyToMany">多对多关系的中间实体类型</param>
/// <returns></returns>
public TableFluent Navigate(string proto, string bind, Type manyToMany = null) => NavigateInternal(proto, bind, null, manyToMany);
public TableFluent Navigate(string proto, string bind, string tempPrimary) => NavigateInternal(proto, bind, tempPrimary, null);
TableFluent NavigateInternal(string proto, string bind, string tempPrimary, Type manyToMany)
{
if (_properties.TryGetValue(proto, out var tryProto) == false) throw new KeyNotFoundException(CoreStrings.NotFound_Property(proto));
var nav = new NavigateAttribute { Bind = bind, TempPrimary = tempPrimary, ManyToMany = manyToMany };
_table._navigates.AddOrUpdate(tryProto.Name, nav, (name, old) => nav);
return this;
}
/// <summary>
/// 设置实体的索引
/// </summary>
/// <param name="name">索引名</param>
/// <param name="fields">索引字段,为属性名以逗号分隔,如:Create_time ASC, Title ASC</param>
/// <param name="isUnique">是否唯一</param>
/// <returns></returns>
public TableFluent Index(string name, string fields, bool isUnique = false)
{
var idx = new IndexAttribute(name, fields, isUnique);
_table._indexs.AddOrUpdate(name, idx, (_, __) => idx);
return this;
}
public TableFluent IndexRemove(string name)
{
_table._indexs.TryRemove(name, out var oldidx);
return this;
}
}
public class TableFluent<T>
{
public TableFluent(TableAttribute table)
{
_properties = typeof(T).GetPropertiesDictIgnoreCase();
_table = table;
}
Dictionary<string, PropertyInfo> _properties;
TableAttribute _table;
/// <summary>
/// 数据库表名
/// </summary>
public TableFluent<T> Name(string value)
{
_table.Name = value;
return this;
}
/// <summary>
/// 指定数据库旧的表名,修改实体命名时,同时设置此参数为修改之前的值,CodeFirst才可以正确修改数据库表;否则将视为【创建新表】
/// </summary>
public TableFluent<T> OldName(string value)
{
_table.OldName = value;
return this;
}
/// <summary>
/// 禁用 CodeFirst 同步结构迁移
/// </summary>
public TableFluent<T> DisableSyncStructure(bool value)
{
_table.DisableSyncStructure = value;
return this;
}
/// <summary>
/// 格式:属性名=开始时间(递增)<para></para>
/// 按年分表:[Table(Name = "log_{yyyy}", AsTable = "create_time=2022-1-1(1 year)")]<para></para>
/// 按月分表:[Table(Name = "log_{yyyyMM}", AsTable = "create_time=2022-5-1(1 month)")]<para></para>
/// 按日分表:[Table(Name = "log_{yyyyMMdd}", AsTable = "create_time=2022-5-1(5 day)")]<para></para>
/// 按时分表:[Table(Name = "log_{yyyyMMddHH}", AsTable = "create_time=2022-5-1(6 hour)")]<para></para>
/// </summary>
public TableFluent<T> AsTable(string value)
{
_table.AsTable = value;
return this;
}
public ColumnFluent Property<TProto>(Expression<Func<T, TProto>> column)
{
var exp = column?.Body;
if (exp?.NodeType == ExpressionType.Convert) exp = (exp as UnaryExpression)?.Operand;
var proto = (exp as MemberExpression)?.Member;
if (proto == null) throw new FormatException(CoreStrings.Bad_Expression_Format(column));
return Property(proto.Name);
}
public ColumnFluent Property(string proto)
{
if (_properties.TryGetValue(proto, out var tryProto) == false) throw new KeyNotFoundException(CoreStrings.NotFound_PropertyName(proto));
var col = _table._columns.GetOrAdd(tryProto.Name, name => new ColumnAttribute { });
return new ColumnFluent(col, tryProto, typeof(T));
}
/// <summary>
/// 导航关系Fluent,与 NavigateAttribute 对应
/// </summary>
/// <typeparam name="TProto"></typeparam>
/// <param name="proto"></param>
/// <param name="bind"></param>
/// <param name="manyToMany">多对多关系的中间实体类型</param>
/// <returns></returns>
public TableFluent<T> Navigate<TProto>(Expression<Func<T, TProto>> proto, string bind, Type manyToMany = null) => NavigateInternal(proto, bind, null, manyToMany);
public TableFluent<T> Navigate<TProto>(Expression<Func<T, TProto>> proto, string bind, string tempPrimary) => NavigateInternal(proto, bind, tempPrimary, null);
TableFluent<T> NavigateInternal<TProto>(Expression<Func<T, TProto>> proto, string bind, string tempPrimary, Type manyToMany = null)
{
var exp = proto?.Body;
if (exp.NodeType == ExpressionType.Convert) exp = (exp as UnaryExpression)?.Operand;
var member = (exp as MemberExpression)?.Member;
if (member == null) throw new FormatException(CoreStrings.Bad_Expression_Format(proto));
return NavigateInternal(member.Name, bind, tempPrimary, manyToMany);
}
public TableFluent<T> Navigate(string proto, string bind, Type manyToMany = null) => NavigateInternal(proto, bind, null, manyToMany);
public TableFluent<T> Navigate(string proto, string bind, string tempPrimary) => NavigateInternal(proto, bind, tempPrimary, null);
TableFluent<T> NavigateInternal(string proto, string bind, string tempPrimary, Type manyToMany)
{
if (_properties.TryGetValue(proto, out var tryProto) == false) throw new KeyNotFoundException(CoreStrings.NotFound_PropertyName(proto));
var nav = new NavigateAttribute { Bind = bind, TempPrimary = tempPrimary, ManyToMany = manyToMany };
_table._navigates.AddOrUpdate(tryProto.Name, nav, (name, old) => nav);
return this;
}
/// <summary>
/// 设置实体的索引
/// </summary>
/// <param name="name">索引名</param>
/// <param name="fields">索引字段,为属性名以逗号分隔,如:Create_time ASC, Title ASC</param>
/// <param name="isUnique">是否唯一</param>
/// <returns></returns>
public TableFluent<T> Index(string name, string fields, bool isUnique = false)
{
var idx = new IndexAttribute(name, fields, isUnique);
_table._indexs.AddOrUpdate(name, idx, (_, __) => idx);
return this;
}
public TableFluent<T> IndexRemove(string name)
{
_table._indexs.TryRemove(name, out var oldidx);
return this;
}
}
}