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- 增加 JsomMap Poco Lambda 表达式成员解析；
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@2881099
2881099 committed Aug 19, 2024
1 parent c01b4c8 commit d889582
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Showing 3 changed files with 155 additions and 26 deletions.
1 change: 1 addition & 0 deletions Extensions/FreeSql.Extensions.JsonMap/DataAnnotations/JsonMapAttribute.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,5 +7,6 @@ namespace FreeSql.DataAnnotations
/// When the entity class property is <see cref="object"/>, map storage in JSON format. <br />
/// 当实体类属性为【对象】时，以 JSON 形式映射存储
/// </summary>
[AttributeUsage(AttributeTargets.Property)]
public class JsonMapAttribute : Attribute { }
}
144 changes: 136 additions & 8 deletions Extensions/FreeSql.Extensions.JsonMap/JsonMapCore.cs
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Original file line number Diff line number Diff line change
@@ -1,7 +1,9 @@
using FreeSql.DataAnnotations;
using FreeSql;
using FreeSql.DataAnnotations;
using Newtonsoft.Json;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
Expand All @@ -19,7 +21,7 @@ public static class FreeSqlJsonMapCoreExtensions
public static ColumnFluent JsonMap(this ColumnFluent col)
{
_dicJsonMapFluentApi.GetOrAdd(col._entityType, et => new ConcurrentDictionary<string, bool>())
.GetOrAdd(col._property.Name, pn => true);
.GetOrAdd(col._property.Name, pn => true);
return col;
}

Expand All @@ -28,12 +30,12 @@ public static ColumnFluent JsonMap(this ColumnFluent col)
/// 当实体类属性为【对象】时，并且标记特性 [JsonMap] 时，该属性将以JSON形式映射存储
/// </summary>
/// <returns></returns>
public static void UseJsonMap(this IFreeSql that)
public static void UseJsonMap(this IFreeSql fsql)
{
UseJsonMap(that, JsonConvert.DefaultSettings?.Invoke() ?? new JsonSerializerSettings());
UseJsonMap(fsql, JsonConvert.DefaultSettings?.Invoke() ?? new JsonSerializerSettings());
}

public static void UseJsonMap(this IFreeSql that, JsonSerializerSettings settings)
public static void UseJsonMap(this IFreeSql fsql, JsonSerializerSettings settings)
{
if (Interlocked.CompareExchange(ref _isAoped, 1, 0) == 0)
{
Expand All @@ -48,7 +50,7 @@ public static void UseJsonMap(this IFreeSql that, JsonSerializerSettings setting
});
}

that.Aop.ConfigEntityProperty += (s, e) =>
fsql.Aop.ConfigEntityProperty += (s, e) =>
{
var isJsonMap = e.Property.GetCustomAttributes(typeof(JsonMapAttribute), false).Any() || _dicJsonMapFluentApi.TryGetValue(e.EntityType, out var tryjmfu) && tryjmfu.ContainsKey(e.Property.Name);
if (isJsonMap)
Expand All @@ -57,8 +59,11 @@ public static void UseJsonMap(this IFreeSql that, JsonSerializerSettings setting
FreeSql.Internal.Utils.dicExecuteArrayRowReadClassOrTuple.ContainsKey(e.Property.PropertyType))
return; //基础类型使用 JsonMap 无效

e.ModifyResult.MapType = typeof(string);
e.ModifyResult.StringLength = -2;
if (e.ModifyResult.MapType == null)
{
e.ModifyResult.MapType = typeof(string);
e.ModifyResult.StringLength = -2;
}
if (_dicTypes.TryAdd(e.Property.PropertyType, true))
{
lock (_concurrentObj)
Expand All @@ -75,5 +80,128 @@ public static void UseJsonMap(this IFreeSql that, JsonSerializerSettings setting
}
}
};
switch (fsql.Ado.DataType)
{
case DataType.Sqlite:
case DataType.MySql:
case DataType.OdbcMySql:
case DataType.CustomMySql:
case DataType.SqlServer:
case DataType.OdbcSqlServer:
case DataType.CustomSqlServer:
case DataType.Oracle:
case DataType.OdbcOracle:
case DataType.CustomOracle:
case DataType.Dameng:
case DataType.PostgreSQL:
case DataType.OdbcPostgreSQL:
case DataType.CustomPostgreSQL:
case DataType.KingbaseES:
case DataType.ShenTong:
fsql.Aop.ParseExpression += (_, e) =>
{
//if (e.Expression is MethodCallExpression callExp)
//{
// var objExp = callExp.Object;
// var objType = objExp?.Type;
// if (objType?.FullName == "System.Byte[]") return;

// if (objType == null && callExp.Method.DeclaringType == typeof(Enumerable))
// {
// objExp = callExp.Arguments.FirstOrDefault();
// objType = objExp?.Type;
// }
// if (objType == null) objType = callExp.Method.DeclaringType;
// if (objType != null || objType.IsArrayOrList())
// {
// string left = null;
// switch (callExp.Method.Name)
// {
// case "Any":
// left = objExp == null ? null : getExp(objExp);
// if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
// return $"(case when {left} is null then 0 else array_length({left},1) end > 0)";
// case "Contains":
// }
// }
//}
//解析 POCO Json a.Customer.Name
if (e.Expression is MemberExpression memExp)
{
if (e.Expression.IsParameter() == false) return;
var parentMemExps = new Stack<MemberExpression>();
parentMemExps.Push(memExp);
while (true)
{
switch (memExp.Expression.NodeType)
{
case ExpressionType.MemberAccess:
memExp = memExp.Expression as MemberExpression;
if (memExp == null) return;
parentMemExps.Push(memExp);
break;
case ExpressionType.Parameter:
var tb = fsql.CodeFirst.GetTableByEntity(memExp.Expression.Type);
if (tb == null) return;
if (tb.ColumnsByCs.TryGetValue(parentMemExps.Pop().Member.Name, out var trycol) == false) return;
if (_dicTypes.ContainsKey(trycol.CsType) == false) return;
var result = e.FreeParse(Expression.MakeMemberAccess(memExp.Expression, tb.Properties[trycol.CsName]));
if (parentMemExps.Any() == false)
{
e.Result = result;
return;
}
var jsonPath = "";
switch (fsql.Ado.DataType)
{
case DataType.Sqlite:
case DataType.MySql:
case DataType.OdbcMySql:
case DataType.CustomMySql:
StyleJsonExtract();
return;
case DataType.SqlServer:
case DataType.OdbcSqlServer:
case DataType.CustomSqlServer:
case DataType.Oracle:
case DataType.OdbcOracle:
case DataType.CustomOracle:
case DataType.Dameng:
StyleJsonValue();
return;
}
while (parentMemExps.Any())
{
memExp = parentMemExps.Pop();
var opt = parentMemExps.Any() ? "->" : $"->>{(memExp.Type.IsArrayOrList() ? "/*json array*/" : "")}";
result = $"{result}{opt}'{memExp.Member.Name}'";
}
e.Result = result;
return;

void StyleJsonExtract()
{
while (parentMemExps.Any())
{
memExp = parentMemExps.Pop();
jsonPath = $"{jsonPath}.{memExp.Member.Name}";
}
e.Result = $"json_extract({result},'${jsonPath}')";
}
void StyleJsonValue()
{
while (parentMemExps.Any())
{
memExp = parentMemExps.Pop();
jsonPath = $"{jsonPath}.{memExp.Member.Name}";
}
e.Result = $"json_value({result},'${jsonPath}')";
}
}
}
}
};
break;
}
}
}
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