317 lines
16 KiB
C#
317 lines
16 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.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace SqlSugar
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{
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internal class OneToManyNavgateExpressionN
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{
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#region Constructor
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public SqlSugarProvider context;
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public string shorName;
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public EntityInfo entityInfo;
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public List<ExpressionItems> items;
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public string whereSql;
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public MethodCallExpressionResolve methodCallExpressionResolve;
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public OneToManyNavgateExpressionN(SqlSugarProvider context, MethodCallExpressionResolve methodCallExpressionResolve)
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{
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this.context = context;
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this.methodCallExpressionResolve= methodCallExpressionResolve;
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}
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#endregion
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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 MethodCallExpression)
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{
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var memberExp=exp as MethodCallExpression;
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if (memberExp.Method.Name.IsIn("Any","Count") && memberExp.Arguments.Count>0 && memberExp.Arguments[0] is MemberExpression )
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{
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result = ValiteOneManyCall(result, memberExp, memberExp.Arguments[0] as MemberExpression, memberExp.Arguments[0]);
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if (memberExp.Arguments.Count > 1)
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{
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whereSql = GetWhereSql(memberExp);
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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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private bool ValiteOneManyCall(bool result,MethodCallExpression callExpression, 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 oldChildExpression = childExpression;
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var child2Expression = (childExpression as MemberExpression).Expression;
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if (child2Expression == null || (child2Expression is ConstantExpression))
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{
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return false;
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}
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items = new List<ExpressionItems>();
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var childType = oldChildExpression.Type;
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if (!childType.FullName.IsCollectionsList())
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{
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return false;
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}
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childType = childType.GetGenericArguments()[0];
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items.Add(new ExpressionItems() { Type = 3, Expression = callExpression, ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(childType) });
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items.Add(new ExpressionItems() { Type = 2, Expression = oldChildExpression, ThisEntityInfo = this.context.EntityMaintenance.GetEntityInfo(childType), ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(child2Expression.Type) });
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if (items.Any(it => it.Type == 2 && it.Nav == null))
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{
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return false;
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}
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while (child2Expression != null)
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{
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if (IsClass(child2Expression))
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{
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items.Add(new ExpressionItems() { Type = 2, Expression = child2Expression, ThisEntityInfo = this.context.EntityMaintenance.GetEntityInfo(child2Expression.Type), ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(GetMemberExpression(child2Expression).Type) });
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child2Expression = GetMemberExpression(child2Expression);
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}
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else if (IsParameter(child2Expression))
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{
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shorName = child2Expression.ToString();
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entityInfo = this.context.EntityMaintenance.GetEntityInfo(child2Expression.Type);
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break;
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}
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else
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{
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break;
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}
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}
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if (!items.Any(it => it.Type == 2 && it.Nav == null))
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{
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return true;
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}
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}
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return result;
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}
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public object GetSql()
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{
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MapperSql MapperSql = new MapperSql();
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var memberInfo = this.items.Where(it => it.Type == 3).First();
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var subInfos = this.items.Where(it => it.Type == 2).Reverse().ToList();
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var formInfo = subInfos.First();
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var joinInfos = subInfos.Skip(1).ToList();
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var i = 0;
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var masterShortName = formInfo.ThisEntityInfo.DbTableName + i;
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var queryable = this.context.Queryable<object>(masterShortName).AS(formInfo.ThisEntityInfo.DbTableName);
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i++;
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var lastShortName = "";
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var index = 0;
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foreach (var item in joinInfos)
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{
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if (item.Nav.NavigatType == NavigateType.OneToMany)
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{
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lastShortName = OneToMany(ref formInfo, ref i, queryable, ref index, item);
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}
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else if (item.Nav.NavigatType == NavigateType.OneToOne)
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{
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lastShortName = OneToOne(ref formInfo, ref i, queryable, ref index, item);
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}
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else
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{
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lastShortName = ManyToMany(ref formInfo, ref i, queryable, ref index, item);
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}
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}
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var isAny = (memberInfo.Expression as MethodCallExpression).Method.Name == "Any";
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queryable.Select(isAny ? "1" : " COUNT(1) ");
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var last = subInfos.First();
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var FirstPkColumn = last.ThisEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
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FirstPkColumn = GetFirstPkColumn(last, FirstPkColumn);
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Check.ExceptionEasy(FirstPkColumn == null, $"{ last.ThisEntityInfo.EntityName} need PrimayKey", $"使用导航属性{ last.ThisEntityInfo.EntityName} 缺少主键");
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var PkColumn = last.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == last.Nav.Name);
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Check.ExceptionEasy(PkColumn == null, $"{ last.ParentEntityInfo.EntityName} no found {last.Nav.Name}", $"{ last.ParentEntityInfo.EntityName} 不存在 {last.Nav.Name}");
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queryable.Where($" {this.shorName}.{ queryable.SqlBuilder.GetTranslationColumnName(PkColumn.DbColumnName)} = {masterShortName}.{queryable.SqlBuilder.GetTranslationColumnName(FirstPkColumn.DbColumnName)} ");
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queryable.WhereIF(this.whereSql.HasValue(), GetWhereSql1(this.whereSql,lastShortName, joinInfos, queryable.SqlBuilder));
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MapperSql.Sql = $"( {queryable.ToSql().Key} ) ";
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if (isAny)
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{
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MapperSql.Sql = $" EXISTS( {MapperSql.Sql}) ";
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}
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return MapperSql;
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}
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private static EntityColumnInfo GetFirstPkColumn(ExpressionItems last, EntityColumnInfo FirstPkColumn)
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{
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if (last.Nav.NavigatType == NavigateType.OneToOne && last.Nav.Name2.HasValue())
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{
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var name2 = last.ThisEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == last.Nav.Name2);
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if (name2 != null)
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{
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FirstPkColumn = name2;
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}
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}
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return FirstPkColumn;
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}
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private static string OneToMany(ref ExpressionItems formInfo, ref int i, ISugarQueryable<object> queryable, ref int index, ExpressionItems item)
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{
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string lastShortName;
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var shortName = item.ThisEntityInfo.DbTableName + i;
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EntityColumnInfo pkColumn;
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EntityColumnInfo navColum;
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//if (index == 0)
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//{
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pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name);
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navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
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if (item.Nav.Name2.HasValue())
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{
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navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name2);
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}
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//}
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//else
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//{
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// pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
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// navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name);
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//}
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Check.ExceptionEasy(pkColumn == null, $"{item.ThisEntityInfo.EntityName} need PrimayKey", $"使用导航属性{item.ThisEntityInfo.EntityName} 缺少主键");
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var on = $" {shortName}.{queryable.SqlBuilder.GetTranslationColumnName(pkColumn.DbColumnName)}={formInfo.ThisEntityInfo.DbTableName + (i - 1)}.{queryable.SqlBuilder.GetTranslationColumnName(navColum.DbColumnName)}";
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queryable.AddJoinInfo(item.ThisEntityInfo.DbTableName, shortName, on, JoinType.Inner);
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++i;
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index++;
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lastShortName = shortName;
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formInfo = item;
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return lastShortName;
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}
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private static string OneToOne(ref ExpressionItems formInfo, ref int i, ISugarQueryable<object> queryable, ref int index, ExpressionItems item)
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{
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string lastShortName;
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var shortName = item.ThisEntityInfo.DbTableName + i;
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EntityColumnInfo pkColumn;
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EntityColumnInfo navColum;
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//if (index == 0)
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//{
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// pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name);
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// navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
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//}
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//else
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//{
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pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it =>it.IsPrimarykey );
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navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name);
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if (item.Nav.Name2.HasValue())
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{
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pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name2);
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}
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//}
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Check.ExceptionEasy(pkColumn == null, $"{item.ThisEntityInfo.EntityName} need PrimayKey", $"使用导航属性{item.ThisEntityInfo.EntityName} 缺少主键");
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var on = $" {shortName}.{queryable.SqlBuilder.GetTranslationColumnName(pkColumn.DbColumnName)}={formInfo.ThisEntityInfo.DbTableName + (i - 1)}.{queryable.SqlBuilder.GetTranslationColumnName(navColum.DbColumnName)}";
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queryable.AddJoinInfo(item.ThisEntityInfo.DbTableName, shortName, on, JoinType.Inner);
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++i;
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index++;
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lastShortName = shortName;
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formInfo = item;
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return lastShortName;
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}
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private string ManyToMany(ref ExpressionItems formInfo, ref int i, ISugarQueryable<object> queryable, ref int index, ExpressionItems item)
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{
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string lastShortName;
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var bshortName = item.ThisEntityInfo.DbTableName + i;
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EntityColumnInfo AidColumn;
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EntityColumnInfo BidColumn;
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BidColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
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AidColumn = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
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var abEntity =this.context.EntityMaintenance.GetEntityInfo(item.Nav.MappingType);
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var Ab_Aid = abEntity.Columns.FirstOrDefault(it => item.Nav.MappingAId == it.PropertyName);
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var Ab_Bid = abEntity.Columns.FirstOrDefault(it => item.Nav.MappingBId == it.PropertyName);
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Check.ExceptionEasy(AidColumn == null, $" {AidColumn.EntityName} need primary key ", $"{AidColumn.EntityName}需要主键");
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Check.ExceptionEasy(AidColumn == null, $" {BidColumn.EntityName} need primary key ", $"{BidColumn.EntityName}需要主键");
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var abShort = abEntity.EntityName + "_1";
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var abOn = $" {abShort}.{queryable.SqlBuilder.GetTranslationColumnName(Ab_Aid.DbColumnName)}={formInfo.ThisEntityInfo.DbTableName + (i - 1)}.{queryable.SqlBuilder.GetTranslationColumnName(AidColumn.DbColumnName)}";
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queryable.AddJoinInfo(abEntity.DbTableName, abShort, abOn, JoinType.Inner);
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var On = $" {bshortName}.{queryable.SqlBuilder.GetTranslationColumnName(BidColumn.DbColumnName)}={abShort}.{queryable.SqlBuilder.GetTranslationColumnName(Ab_Bid.DbColumnName)}";
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queryable.AddJoinInfo(BidColumn.DbTableName, bshortName, On, JoinType.Inner);
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++i;
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index++;
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lastShortName = bshortName;
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formInfo = item;
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return lastShortName;
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}
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#region Helper
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private string GetWhereSql1(string wheresql,string lastShortName, List<ExpressionItems> joinInfos,ISqlBuilder sqlBuilder)
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{
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var sql = wheresql;
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if (sql == null) return sql;
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joinInfos.Last().ThisEntityInfo.Columns.ForEach(it =>
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{
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if (it.DbColumnName != null)
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{
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if (this.whereSql.Contains("." + sqlBuilder.GetTranslationColumnName(it.DbColumnName)))
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{
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var regex = @"\w+\." + sqlBuilder.GetTranslationColumnName(it.DbColumnName)
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.Replace(sqlBuilder.SqlTranslationLeft, "\\" + sqlBuilder.SqlTranslationLeft)
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.Replace(sqlBuilder.SqlTranslationRight, "\\" + sqlBuilder.SqlTranslationRight)
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.Replace("\\\\","\\");
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if (!regex.IsMatch(this.whereSql))
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{
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regex = $@"\{sqlBuilder.SqlTranslationLeft}\w+\{sqlBuilder.SqlTranslationRight}\." + sqlBuilder.GetTranslationColumnName(it.DbColumnName)
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.Replace(sqlBuilder.SqlTranslationLeft, "\\" + sqlBuilder.SqlTranslationLeft)
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.Replace(sqlBuilder.SqlTranslationRight, "\\" + sqlBuilder.SqlTranslationRight)
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.Replace("\\\\", "\\");
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}
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this.whereSql =Regex.Replace(this.whereSql, regex,
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lastShortName + "." + sqlBuilder.GetTranslationColumnName(it.DbColumnName));
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}
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else
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{
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var oldWhere = this.whereSql;
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var newWhere = this.whereSql.Replace(sqlBuilder.GetTranslationColumnName(it.DbColumnName),
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lastShortName + "." + sqlBuilder.GetTranslationColumnName(it.DbColumnName));
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if (oldWhere != newWhere && !oldWhere.Contains($" {sqlBuilder.GetTranslationColumnName(it.DbColumnName)}"))
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{
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}
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else
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{
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this.whereSql = newWhere;
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}
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}
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}
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});
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return this.whereSql;
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}
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private string GetWhereSql(MethodCallExpression memberExp)
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{
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var whereExp = memberExp.Arguments[1];
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var result = this.methodCallExpressionResolve.GetNewExpressionValue(whereExp);
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return result;
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}
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private static bool IsParameter(Expression child2Expression)
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{
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return child2Expression.Type.IsClass() && child2Expression is ParameterExpression;
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}
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private static Expression GetMemberExpression(Expression child2Expression)
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{
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return (child2Expression as MemberExpression).Expression;
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}
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private static bool IsClass(Expression child2Expression)
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{
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return child2Expression.Type.IsClass() && child2Expression is MemberExpression;
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}
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#endregion
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}
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}
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