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Optimize multi-field navigation

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This commit is contained in:
sunkaixuan 2023-09-29 15:49:10 +08:00
parent ecc9c80f9d
commit 4e1c178d24
1 changed files with 31 additions and 1 deletions
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32
Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
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@ -491,7 +491,7 @@ namespace SqlSugar
private void Dynamic(List<object> list, Func<ISugarQueryable<object>, List<object>> selector, EntityInfo listItemEntity, System.Reflection.PropertyInfo navObjectNamePropety, EntityColumnInfo navObjectNameColumnInfo,Expression expression)
{
var args = navObjectNameColumnInfo.PropertyInfo.PropertyType.GetGenericArguments();
if (args.Length == 0)
if (args.Length == 0)
{
DynamicOneToOne(list,selector,listItemEntity, navObjectNamePropety, navObjectNameColumnInfo,expression);
return;
@ -504,6 +504,10 @@ namespace SqlSugar
childDb.InitMappingInfo(navEntity);
var navEntityInfo = childDb.EntityMaintenance.GetEntityInfo(navEntity);
var sqlObj = GetWhereSql(navObjectNameColumnInfo.Navigat.Name);
if (IsJsonMapping(navObjectNameColumnInfo, sqlObj))
{
CreateDynamicMappingExpression(sqlObj, navObjectNameColumnInfo.Navigat.Name, navEntityInfo, listItemEntity);
}
Check.ExceptionEasy(sqlObj.MappingExpressions.IsNullOrEmpty(), $"{expression} error,dynamic need MappingField ,Demo: Includes(it => it.Books.MappingField(z=>z.studenId,()=>it.StudentId).ToList())", $"{expression} 解析出错,自定义映射需要 MappingField ,例子: Includes(it => it.Books.MappingField(z=>z.studenId,()=>it.StudentId).ToList())");
if (list.Any() && navObjectNamePropety.GetValue(list.First()) == null)
{
@ -846,5 +850,31 @@ namespace SqlSugar
navPkColumn?.SqlParameterDbType == null &&
this.Context?.CurrentConnectionConfig?.MoreSettings?.TableEnumIsString != true;
}
private static bool IsJsonMapping(EntityColumnInfo navObjectNameColumnInfo, SqlInfo sqlObj)
{
return sqlObj.MappingExpressions == null && navObjectNameColumnInfo.Navigat.Name.HasValue();
}
private void CreateDynamicMappingExpression(SqlInfo sqlObj, string name, EntityInfo navEntityInfo, EntityInfo listItemEntity)
{
var json = Newtonsoft.Json.Linq.JArray.Parse(name);
sqlObj.MappingExpressions = new List<MappingFieldsExpression>();
foreach (var item in json)
{
string m = item["m"]+"";
string c = item["c"] + "";
Check.ExceptionEasy(m.IsNullOrEmpty() || c.IsNullOrEmpty(), $"{name} Navigation json format error, see documentation", $"{name}导航json格式错误,请看文档");
var cColumn= navEntityInfo.Columns.FirstOrDefault(it => it.PropertyName.EqualCase(c));
Check.ExceptionEasy(cColumn==null, $"{c} does not exist in {navEntityInfo.EntityName}", $"{c}不存在于{navEntityInfo.EntityName}");
var mColumn = listItemEntity.Columns.FirstOrDefault(it => it.PropertyName.EqualCase(m));
Check.ExceptionEasy(cColumn == null, $"{m} does not exist in {listItemEntity.EntityName}", $"{m}不存在于{listItemEntity.EntityName}");
sqlObj.MappingExpressions.Add(new MappingFieldsExpression() {
LeftEntityColumn = cColumn,
RightEntityColumn = mColumn,
});
}
}
}
}