90 lines
3.6 KiB
C#
90 lines
3.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Text;
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using System.Threading.Tasks;
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namespace SqlSugar
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{
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public partial class InsertNavProvider<Root, T> where T : class, new() where Root : class, new()
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{
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private void InsertOneToMany<TChild>(string name, EntityColumnInfo nav) where TChild : class, new()
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{
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List<TChild> children = new List<TChild>();
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var parentEntity = _ParentEntity;
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var parentList = _ParentList;
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var parentNavigateProperty = parentEntity.Columns.FirstOrDefault(it => it.PropertyName == name);
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var thisEntity = this._Context.EntityMaintenance.GetEntityInfo<TChild>();
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var thisPkColumn = GetPkColumnByNav2(thisEntity, nav);
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var thisFkColumn = GetFKColumnByNav(thisEntity, nav);
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EntityColumnInfo parentPkColumn = GetParentPkColumn();
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EntityColumnInfo parentNavColumn = GetParentPkNavColumn(nav);
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if (parentNavColumn != null)
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{
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parentPkColumn = parentNavColumn;
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}
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if (ParentIsPk(parentNavigateProperty))
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{
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parentPkColumn = this._ParentEntity.Columns.FirstOrDefault(it => it.IsPrimarykey);
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}
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foreach (var item in parentList)
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{
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var parentValue = parentPkColumn.PropertyInfo.GetValue(item);
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var childs = parentNavigateProperty.PropertyInfo.GetValue(item) as List<TChild>;
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if (childs != null)
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{
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foreach (var child in childs)
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{
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thisFkColumn.PropertyInfo.SetValue(child, parentValue, null);
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}
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children.AddRange(childs);
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}
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}
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Check.ExceptionEasy(thisPkColumn == null, $"{thisEntity.EntityName}need primary key", $"实体{thisEntity.EntityName}需要主键");
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if (NotAny(name))
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{
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InsertDatas(children, thisPkColumn);
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}
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else
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{
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this._ParentList = children.Cast<object>().ToList();
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}
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SetNewParent<TChild>(thisEntity, thisPkColumn);
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}
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private static bool ParentIsPk(EntityColumnInfo parentNavigateProperty)
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{
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return parentNavigateProperty != null &&
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parentNavigateProperty.Navigat != null &&
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parentNavigateProperty.Navigat.NavigatType == NavigateType.OneToMany &&
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parentNavigateProperty.Navigat.Name2==null;
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}
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private EntityColumnInfo GetParentPkColumn()
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{
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EntityColumnInfo parentPkColumn = _ParentPkColumn;
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if (_ParentPkColumn == null)
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{
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parentPkColumn= _ParentPkColumn = this._ParentEntity.Columns.FirstOrDefault(it => it.IsPrimarykey);
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}
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return parentPkColumn;
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}
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private EntityColumnInfo GetParentPkNavColumn(EntityColumnInfo nav)
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{
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EntityColumnInfo result = null;
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if (nav.Navigat.Name2.HasValue())
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{
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result = _ParentPkColumn = this._ParentEntity.Columns.FirstOrDefault(it => it.PropertyName== nav.Navigat.Name2);
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}
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return result;
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}
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private void SetNewParent<TChild>(EntityInfo entityInfo,EntityColumnInfo entityColumnInfo) where TChild : class, new()
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{
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this._ParentEntity = entityInfo;
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this._ParentPkColumn = entityColumnInfo;
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}
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}
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}
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