210 lines
10 KiB
C#
210 lines
10 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.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using System.Xml.Linq;
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namespace SqlSugar
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{
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internal class OneToOneNavgateExpression
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{
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public ExpressionContext ExpContext;
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private SqlSugarProvider context;
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internal EntityInfo EntityInfo;
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internal EntityInfo ProPertyEntity;
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private Navigate Navigat;
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public string ShorName;
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internal string MemberName;
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private MemberExpressionResolve _memberExpressionResolve;
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public OneToOneNavgateExpression(SqlSugarProvider context, MemberExpressionResolve memberExpressionResolve)
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{
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this.context = context;
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_memberExpressionResolve= memberExpressionResolve;
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}
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internal bool IsNavgate(Expression expression)
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{
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var result = false;
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var exp = expression;
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if (exp is UnaryExpression)
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{
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exp = (exp as UnaryExpression).Operand;
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}
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if (exp is MemberExpression)
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{
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var memberExp = exp as MemberExpression;
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var childExpression = memberExp.Expression;
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result = ValidateNav(result, memberExp, childExpression);
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}
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return result;
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}
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private bool ValidateNav(bool result, MemberExpression memberExp, Expression childExpression)
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{
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if (childExpression != null && childExpression is MemberExpression)
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{
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var child2Expression = (childExpression as MemberExpression).Expression;
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if (child2Expression == null)
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{
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return false;
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}
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if (child2Expression.Type.IsClass() && child2Expression is ParameterExpression)
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{
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var entity = this.context.EntityMaintenance.GetEntityInfo(child2Expression.Type);
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if (entity.Columns.Any(x => x.PropertyName == (childExpression as MemberExpression).Member.Name && x.Navigat != null))
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{
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EntityInfo = entity;
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ShorName = child2Expression.ToString();
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MemberName = memberExp.Member.Name;
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ProPertyEntity = this.context.EntityMaintenance.GetEntityInfo(childExpression.Type);
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Navigat = entity.Columns.FirstOrDefault(x => x.PropertyName == (childExpression as MemberExpression).Member.Name).Navigat;
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result = true;
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}
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}
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}
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return result;
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}
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internal MapperSql GetSql()
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{
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if (this.ProPertyEntity.Type.Name.StartsWith("List`"))
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{
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Check.ExceptionEasy(true, " expression error ", "导航查询出错，比如.Count要改成 .Count()");
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}
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else if (Navigat.NavigatType == NavigateType.Dynamic)
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{
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return NavigatDynamicSql();
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}
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var pk = this.ProPertyEntity.Columns.FirstOrDefault(it => it.IsPrimarykey == true)?.DbColumnName;
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if (Navigat.Name2.HasValue())
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{
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pk = this.ProPertyEntity.Columns.FirstOrDefault(it => it.PropertyName == Navigat.Name2)?.DbColumnName;
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}
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if(pk==null)
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{
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Check.ExceptionEasy(
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true,
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$"{this.ProPertyEntity.EntityName} naviate config error",
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$"{this.ProPertyEntity.EntityName} 导航配置错误");
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}
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var name = this.EntityInfo.Columns.First(it => it.PropertyName == Navigat.Name).DbColumnName;
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var selectName = this.ProPertyEntity.Columns.First(it => it.PropertyName ==MemberName).DbColumnName;
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MapperSql mapper = new MapperSql();
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var queryable = this.context.Queryable<object>();
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pk = queryable.QueryBuilder.Builder.GetTranslationColumnName(pk);
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name = queryable.QueryBuilder.Builder.GetTranslationColumnName(name);
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selectName = queryable.QueryBuilder.Builder.GetTranslationColumnName(selectName);
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var tableName = this.ProPertyEntity.DbTableName;
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if (ExpContext?.SugarContext?.QueryBuilder?.IsCrossQueryWithAttr==true)
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{
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var attr= this.ProPertyEntity.Type.GetCustomAttribute<TenantAttribute>();
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var configId = ((object)this.context.CurrentConnectionConfig.ConfigId).ObjToString();
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if (attr != null && configId != attr.configId.ObjToString())
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{
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var context = this.context.Root.GetConnection(attr.configId);
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var dbName = context.Ado.Connection.Database;
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if (context.CurrentConnectionConfig.DbLinkName.HasValue())
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{
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tableName = UtilMethods.GetTableByDbLink(context, tableName, tableName, attr);
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}
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else
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{
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tableName = queryable.QueryBuilder.LambdaExpressions.DbMehtods.GetTableWithDataBase
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(queryable.QueryBuilder.Builder.GetTranslationColumnName(dbName), queryable.QueryBuilder.Builder.GetTranslationColumnName(tableName));
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}
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}
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}
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Type[] clearTypes = null;
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var isClearFilter = false;
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if (this._memberExpressionResolve?.Context?.SugarContext?.QueryBuilder != null)
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{
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queryable.QueryBuilder.LambdaExpressions.ParameterIndex = 500 + this._memberExpressionResolve.Context.SugarContext.QueryBuilder.LambdaExpressions.ParameterIndex;
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this._memberExpressionResolve.Context.SugarContext.QueryBuilder.LambdaExpressions.ParameterIndex++;
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isClearFilter = this._memberExpressionResolve.Context.SugarContext.QueryBuilder.IsDisabledGobalFilter;
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clearTypes = this._memberExpressionResolve.Context.SugarContext.QueryBuilder.RemoveFilters;
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}
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var type = this.ProPertyEntity.Columns.Count(it => it.IsPrimarykey) > 1 ? this.ProPertyEntity.Type : null;
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if (isClearFilter)
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{
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type = null;
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}
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var sqlObj = queryable
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.AS(tableName)
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.ClearFilter(clearTypes)
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.Filter(type)
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.WhereIF(Navigat.WhereSql.HasValue(), Navigat.WhereSql)
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.Where($" {queryable.SqlBuilder.GetTranslationColumnName(ShorName)}.{name}={pk} ").Select(selectName).ToSql();
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mapper.Sql = sqlObj.Key;
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mapper.Sql = $" ({mapper.Sql}) ";
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if (type!=null&sqlObj.Value?.Any() == true)
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{
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foreach (var item in sqlObj.Value)
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{
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if (!this._memberExpressionResolve.Context.Parameters.Any(it => it.ParameterName == item.ParameterName))
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{
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this._memberExpressionResolve.Context.Parameters.Add(item);
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}
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}
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}
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return mapper;
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}
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private MapperSql NavigatDynamicSql()
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{
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if (Navigat.Name == null)
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{
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Check.ExceptionEasy(
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true,
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" NavigateType.Dynamic User-defined navigation objects need to be configured with json to be used in expressions . " + this.ProPertyEntity.Type.Name,
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" NavigateType.Dynamic 自定义导航对象需要配置json才能在表达式中使用。 " + this.ProPertyEntity.Type.Name);
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}
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MapperSql mapperSql = new MapperSql();
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//var name = this.EntityInfo.Columns.First(it => it.PropertyName == Navigat.Name).DbColumnName;
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var selectName = this.ProPertyEntity.Columns.First(it => it.PropertyName == MemberName).DbColumnName;
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MapperSql mapper = new MapperSql();
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var queryable = this.context.Queryable<object>();
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var tableName = this.ProPertyEntity.DbTableName;
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Type[] clearTypes = null;
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var isClearFilter = false;
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if (this._memberExpressionResolve?.Context?.SugarContext?.QueryBuilder != null)
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{
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queryable.QueryBuilder.LambdaExpressions.ParameterIndex = 500 + this._memberExpressionResolve.Context.SugarContext.QueryBuilder.LambdaExpressions.ParameterIndex;
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this._memberExpressionResolve.Context.SugarContext.QueryBuilder.LambdaExpressions.ParameterIndex++;
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isClearFilter = this._memberExpressionResolve.Context.SugarContext.QueryBuilder.IsDisabledGobalFilter;
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clearTypes = this._memberExpressionResolve.Context.SugarContext.QueryBuilder.RemoveFilters;
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}
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var type = this.ProPertyEntity.Columns.Count(it => it.IsPrimarykey) > 1 ? this.ProPertyEntity.Type : null;
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if (isClearFilter)
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{
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type = null;
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}
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queryable
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.AS(tableName)
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.Take(1)
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.ClearFilter(clearTypes)
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.Filter(type)
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.WhereIF(Navigat.WhereSql.HasValue(), Navigat.WhereSql)
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.Select(selectName);
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var json = Newtonsoft.Json.Linq.JArray.Parse(Navigat.Name);
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foreach (var item in json)
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{
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string m = item["m"] + "";
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string c = item["c"] + "";
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var leftName= this.EntityInfo.Columns.First(it => it.PropertyName == m).DbColumnName;
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var rightName= this.ProPertyEntity.Columns.First(it => it.PropertyName == c).DbColumnName;
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queryable.Where($" {queryable.SqlBuilder.GetTranslationColumnName(ShorName)}.{queryable.SqlBuilder.GetTranslationColumnName(leftName)}={queryable.SqlBuilder.GetTranslationColumnName(rightName)} ");
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}
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var sqlObj= queryable.ToSql();
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mapper.Sql = sqlObj.Key;
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mapper.Sql = $" ({mapper.Sql}) ";
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return mapper;
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}
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}
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}
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