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671 lines
42 KiB
C#
671 lines
42 KiB
C#
using FreeSql.Internal.Model;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.Concurrent;
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using System.Data.Common;
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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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namespace FreeSql.Internal {
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internal abstract class CommonExpression {
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internal CommonUtils _common;
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internal CommonExpression(CommonUtils common) {
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_common = common;
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}
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internal bool ReadAnonymousField(List<SelectTableInfo> _tables, StringBuilder field, ReadAnonymousTypeInfo parent, ref int index, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
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switch (exp.NodeType) {
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case ExpressionType.Quote: return ReadAnonymousField(_tables, field, parent, ref index, (exp as UnaryExpression)?.Operand, getSelectGroupingMapString);
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case ExpressionType.Lambda: return ReadAnonymousField(_tables, field, parent, ref index, (exp as LambdaExpression)?.Body, getSelectGroupingMapString);
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case ExpressionType.Negate:
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case ExpressionType.NegateChecked:
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parent.DbField = $"-({ExpressionLambdaToSql(exp, _tables, null, getSelectGroupingMapString, SelectTableInfoType.From, true)})";
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field.Append(", ").Append(parent.DbField);
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if (index >= 0) field.Append(" as").Append(++index);
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return false;
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case ExpressionType.Convert: return ReadAnonymousField(_tables, field, parent, ref index, (exp as UnaryExpression)?.Operand, getSelectGroupingMapString);
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case ExpressionType.Constant:
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var constExp = exp as ConstantExpression;
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//处理自定义SQL语句，如： ToList(new {
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// ccc = "now()",
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// partby = "sum(num) over(PARTITION BY server_id,os,rid,chn order by id desc)"
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//})，有缺点即 ccc partby 接受类型都是 string，可配合 Convert.ToXxx 类型转换，请看下面的兼容
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parent.DbField = constExp.Type.FullName == "System.String" ? (constExp.Value?.ToString() ?? "NULL") : _common.FormatSql("{0}", constExp?.Value);
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field.Append(", ").Append(parent.DbField);
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if (index >= 0) field.Append(" as").Append(++index);
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return false;
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case ExpressionType.Call:
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var callExp = exp as MethodCallExpression;
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//处理自定义SQL语句，如： ToList(new {
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// ccc = Convert.ToDateTime("now()"),
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// partby = Convert.ToDecimal("sum(num) over(PARTITION BY server_id,os,rid,chn order by id desc)")
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//})
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if (callExp.Method?.DeclaringType.FullName == "System.Convert" &&
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callExp.Method.Name.StartsWith("To") &&
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callExp.Arguments[0].NodeType == ExpressionType.Constant &&
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callExp.Arguments[0].Type.FullName == "System.String")
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parent.DbField = (callExp.Arguments[0] as ConstantExpression).Value?.ToString() ?? "NULL";
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else
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parent.DbField = ExpressionLambdaToSql(exp, _tables, null, getSelectGroupingMapString, SelectTableInfoType.From, true);
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field.Append(", ").Append(parent.DbField);
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if (index >= 0) field.Append(" as").Append(++index);
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return false;
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case ExpressionType.MemberAccess:
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if (_common.GetTableByEntity(exp.Type) != null) { //加载表所有字段
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var map = new List<SelectColumnInfo>();
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ExpressionSelectColumn_MemberAccess(_tables, map, SelectTableInfoType.From, exp, true, getSelectGroupingMapString);
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parent.Consturctor = map.First().Table.Table.Type.GetConstructor(new Type[0]);
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parent.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties;
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for (var idx = 0; idx < map.Count; idx++) {
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var child = new ReadAnonymousTypeInfo {
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Property = map.First().Table.Table.Type.GetProperty(map[idx].Column.CsName, BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance),
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CsName = map[idx].Column.CsName, DbField = $"{map[idx].Table.Alias}.{_common.QuoteSqlName(map[idx].Column.Attribute.Name)}" };
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field.Append(", ").Append(_common.QuoteReadColumn(map[idx].Column.CsType, child.DbField));
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if (index >= 0) field.Append(" as").Append(++index);
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parent.Childs.Add(child);
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}
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} else {
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parent.DbField = ExpressionLambdaToSql(exp, _tables, null, getSelectGroupingMapString, SelectTableInfoType.From, true);
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field.Append(", ").Append(parent.DbField);
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if (index >= 0) field.Append(" as").Append(++index);
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return false;
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}
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return false;
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case ExpressionType.New:
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var newExp = exp as NewExpression;
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parent.Consturctor = newExp.Type.GetConstructors()[0];
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parent.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Arguments;
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for (var a = 0; a < newExp.Members.Count; a++) {
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var child = new ReadAnonymousTypeInfo {
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Property = newExp.Type.GetProperty(newExp.Members[a].Name, BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance),
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CsName = newExp.Members[a].Name, CsType = newExp.Arguments[a].Type };
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parent.Childs.Add(child);
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ReadAnonymousField(_tables, field, child, ref index, newExp.Arguments[a], getSelectGroupingMapString);
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}
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return true;
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}
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parent.DbField = $"({ExpressionLambdaToSql(exp, _tables, null, getSelectGroupingMapString, SelectTableInfoType.From, true)})";
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field.Append(", ").Append(parent.DbField);
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if (index >= 0) field.Append(" as").Append(++index);
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return false;
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}
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internal object ReadAnonymous(ReadAnonymousTypeInfo parent, DbDataReader dr, ref int index) {
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if (parent.Childs.Any() == false) return dr.GetValue(++index);
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switch (parent.ConsturctorType) {
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case ReadAnonymousTypeInfoConsturctorType.Arguments:
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var args = new object[parent.Childs.Count];
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for (var a = 0; a < parent.Childs.Count; a++) {
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args[a] = Utils.GetDataReaderValue(parent.Childs[a].CsType, ReadAnonymous(parent.Childs[a], dr, ref index));
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}
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return parent.Consturctor.Invoke(args);
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case ReadAnonymousTypeInfoConsturctorType.Properties:
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var ret = parent.Consturctor.Invoke(null);
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for (var b = 0; b < parent.Childs.Count; b++) {
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var prop = parent.Childs[b].Property;
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prop.SetValue(ret, Utils.GetDataReaderValue(prop.PropertyType, ReadAnonymous(parent.Childs[b], dr, ref index)), null);
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}
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return ret;
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}
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return null;
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}
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internal string ExpressionConstant(ConstantExpression exp) => _common.FormatSql("{0}", exp?.Value);
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internal string ExpressionSelectColumn_MemberAccess(List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, SelectTableInfoType tbtype, Expression exp, bool isQuoteName, Func<Expression[], string> getSelectGroupingMapString) {
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return ExpressionLambdaToSql(exp, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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}
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internal string[] ExpressionSelectColumns_MemberAccess_New_NewArrayInit(List<SelectTableInfo> _tables, Expression exp, bool isQuoteName, Func<Expression[], string> getSelectGroupingMapString) {
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switch (exp?.NodeType) {
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case ExpressionType.Quote: return ExpressionSelectColumns_MemberAccess_New_NewArrayInit(_tables, (exp as UnaryExpression)?.Operand, isQuoteName, getSelectGroupingMapString);
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case ExpressionType.Lambda: return ExpressionSelectColumns_MemberAccess_New_NewArrayInit(_tables, (exp as LambdaExpression)?.Body, isQuoteName, getSelectGroupingMapString);
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case ExpressionType.Convert: return ExpressionSelectColumns_MemberAccess_New_NewArrayInit(_tables, (exp as UnaryExpression)?.Operand, isQuoteName, getSelectGroupingMapString);
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case ExpressionType.Constant: return new[] { ExpressionSelectColumn_MemberAccess(_tables, null, SelectTableInfoType.From, exp, isQuoteName, getSelectGroupingMapString) };
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case ExpressionType.MemberAccess: return new[] { ExpressionSelectColumn_MemberAccess(_tables, null, SelectTableInfoType.From, exp, isQuoteName, getSelectGroupingMapString) };
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case ExpressionType.New:
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var newExp = exp as NewExpression;
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if (newExp == null) break;
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var newExpMembers = new string[newExp.Members.Count];
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for (var a = 0; a < newExpMembers.Length; a++) newExpMembers[a] = ExpressionSelectColumn_MemberAccess(_tables, null, SelectTableInfoType.From, newExp.Arguments[a], isQuoteName, getSelectGroupingMapString);
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return newExpMembers;
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case ExpressionType.NewArrayInit:
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var newArr = exp as NewArrayExpression;
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if (newArr == null) break;
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var newArrMembers = new List<string>();
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foreach (var newArrExp in newArr.Expressions) newArrMembers.AddRange(ExpressionSelectColumns_MemberAccess_New_NewArrayInit(_tables, newArrExp, isQuoteName, getSelectGroupingMapString));
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return newArrMembers.ToArray();
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}
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return new string[0];
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}
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static readonly Dictionary<ExpressionType, string> dicExpressionOperator = new Dictionary<ExpressionType, string>() {
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{ ExpressionType.OrElse, "OR" },
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{ ExpressionType.Or, "|" },
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{ ExpressionType.AndAlso, "AND" },
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{ ExpressionType.And, "&" },
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{ ExpressionType.GreaterThan, ">" },
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{ ExpressionType.GreaterThanOrEqual, ">=" },
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{ ExpressionType.LessThan, "<" },
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{ ExpressionType.LessThanOrEqual, "<=" },
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{ ExpressionType.NotEqual, "<>" },
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{ ExpressionType.Add, "+" },
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{ ExpressionType.Subtract, "-" },
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{ ExpressionType.Multiply, "*" },
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{ ExpressionType.Divide, "/" },
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{ ExpressionType.Modulo, "%" },
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{ ExpressionType.Equal, "=" },
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};
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internal string ExpressionWhereLambdaNoneForeignObject(List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
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var sql = ExpressionLambdaToSql(exp, _tables, _selectColumnMap, getSelectGroupingMapString, SelectTableInfoType.From, true);
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switch(sql) {
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case "1":
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case "'t'": return "1=1";
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case "0":
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case "'f'": return "1=2";
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default:return sql;
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}
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}
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internal string ExpressionWhereLambda(List<SelectTableInfo> _tables, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
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var sql = ExpressionLambdaToSql(exp, _tables, null, getSelectGroupingMapString, SelectTableInfoType.From, true);
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switch (sql) {
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case "1":
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case "'t'": return "1=1";
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case "0":
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case "'f'": return "1=2";
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default: return sql;
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}
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}
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internal void ExpressionJoinLambda(List<SelectTableInfo> _tables, SelectTableInfoType tbtype, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
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var tbidx = _tables.Count;
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var filter = ExpressionLambdaToSql(exp, _tables, null, getSelectGroupingMapString, tbtype, true);
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switch (filter) {
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case "1":
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case "'t'": filter = "1=1"; break;
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case "0":
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case "'f'": filter = "1=2"; break;
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default: break;
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}
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if (_tables.Count > tbidx) {
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_tables[tbidx].Type = tbtype;
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_tables[tbidx].On = filter;
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for (var a = tbidx + 1; a < _tables.Count; a++)
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_tables[a].Type = SelectTableInfoType.From;
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} else {
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var find = _tables.Where((a, c) => c > 0 && (a.Type == tbtype || a.Type == SelectTableInfoType.From) && string.IsNullOrEmpty(a.On)).LastOrDefault();
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if (find != null) {
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find.Type = tbtype;
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find.On = filter;
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}
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}
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}
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static ConcurrentDictionary<Type, MethodInfo> _dicExpressionLambdaToSqlAsSelectMethodInfo = new ConcurrentDictionary<Type, MethodInfo>();
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static ConcurrentDictionary<Type, MethodInfo> _dicExpressionLambdaToSqlAsSelectWhereMethodInfo = new ConcurrentDictionary<Type, MethodInfo>();
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static ConcurrentDictionary<Type, MethodInfo> _dicExpressionLambdaToSqlAsSelectWhereSqlMethodInfo = new ConcurrentDictionary<Type, MethodInfo>();
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static ConcurrentDictionary<Type, MethodInfo> _dicExpressionLambdaToSqlAsSelectAnyMethodInfo = new ConcurrentDictionary<Type, MethodInfo>();
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static ConcurrentDictionary<Type, PropertyInfo> _dicNullableValueProperty = new ConcurrentDictionary<Type, PropertyInfo>();
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static ConcurrentDictionary<Type, Expression> _dicFreeSqlGlobalExtensionsAsSelectExpression = new ConcurrentDictionary<Type, Expression>();
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internal string ExpressionLambdaToSql(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName) {
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if (exp == null) return "";
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switch (exp.NodeType) {
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case ExpressionType.Not: return $"not({ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)})";
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case ExpressionType.Quote: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case ExpressionType.Lambda: return ExpressionLambdaToSql((exp as LambdaExpression)?.Body, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case ExpressionType.Convert:
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var othercExp = ExpressionLambdaToSqlOther(exp, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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if (string.IsNullOrEmpty(othercExp) == false) return othercExp;
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return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case ExpressionType.Negate:
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case ExpressionType.NegateChecked: return "-" + ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case ExpressionType.Constant: return _common.FormatSql("{0}", (exp as ConstantExpression)?.Value);
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case ExpressionType.Conditional:
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var condExp = exp as ConditionalExpression;
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return $"case when {ExpressionLambdaToSql(condExp.Test, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)} then {ExpressionLambdaToSql(condExp.IfTrue, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)} else {ExpressionLambdaToSql(condExp.IfFalse, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)} end";
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case ExpressionType.Call:
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var exp3 = exp as MethodCallExpression;
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var callType = exp3.Object?.Type ?? exp3.Method.DeclaringType;
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switch (callType.FullName) {
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case "System.String": return ExpressionLambdaToSqlCallString(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case "System.Math": return ExpressionLambdaToSqlCallMath(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case "System.DateTime": return ExpressionLambdaToSqlCallDateTime(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case "System.TimeSpan": return ExpressionLambdaToSqlCallTimeSpan(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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case "System.Convert": return ExpressionLambdaToSqlCallConvert(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
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}
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if (callType.FullName.StartsWith("FreeSql.ISelectGroupingAggregate`")) {
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switch (exp3.Method.Name) {
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case "Count": return "count(1)";
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case "Sum": return $"sum({ExpressionLambdaToSql(exp3.Arguments[0], _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)})";
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case "Avg": return $"avg({ExpressionLambdaToSql(exp3.Arguments[0], _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)})";
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case "Max": return $"max({ExpressionLambdaToSql(exp3.Arguments[0], _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)})";
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case "Min": return $"min({ExpressionLambdaToSql(exp3.Arguments[0], _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)})";
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}
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}
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if (callType.FullName.StartsWith("FreeSql.ISelect`")) { //子表查询
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if (exp3.Method.Name == "Any") { //exists
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var anyArgs = exp3.Arguments;
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var exp3Stack = new Stack<Expression>();
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var exp3tmp = exp3.Object;
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if (exp3tmp != null && anyArgs.Any())
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exp3Stack.Push(Expression.Call(exp3tmp, callType.GetMethod("Where", anyArgs.Select(a => a.Type).ToArray()), anyArgs.ToArray()));
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while (exp3tmp != null) {
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exp3Stack.Push(exp3tmp);
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switch (exp3tmp.NodeType) {
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case ExpressionType.Call:
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var exp3tmpCall = (exp3tmp as MethodCallExpression);
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exp3tmp = exp3tmpCall.Object == null ? exp3tmpCall.Arguments.FirstOrDefault() : exp3tmpCall.Object;
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continue;
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case ExpressionType.MemberAccess: exp3tmp = (exp3tmp as MemberExpression).Expression; continue;
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}
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break;
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}
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object fsql = null;
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List<SelectTableInfo> fsqltables = null;
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var fsqltable1SetAlias = false;
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Type fsqlType = null;
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Stack<Expression> asSelectBefores = new Stack<Expression>();
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var asSelectSql = "";
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Type asSelectEntityType = null;
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MemberExpression asSelectParentExp1 = null;
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Expression asSelectParentExp = null;
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while (exp3Stack.Any()) {
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exp3tmp = exp3Stack.Pop();
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if (exp3tmp.Type.FullName.StartsWith("FreeSql.ISelect`") && fsql == null) {
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if (exp3tmp.NodeType == ExpressionType.Call) {
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var exp3tmpCall = (exp3tmp as MethodCallExpression);
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if (exp3tmpCall.Method.Name == "AsSelect" && exp3tmpCall.Object == null) {
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var exp3tmpArg1Type = exp3tmpCall.Arguments.FirstOrDefault()?.Type;
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if (exp3tmpArg1Type != null) {
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asSelectEntityType = exp3tmpArg1Type.GetElementType() ?? exp3tmpArg1Type.GenericTypeArguments.FirstOrDefault();
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if (asSelectEntityType != null) {
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fsql = _dicExpressionLambdaToSqlAsSelectMethodInfo.GetOrAdd(asSelectEntityType, asSelectEntityType2 => typeof(IFreeSql).GetMethod("Select", new Type[0]).MakeGenericMethod(asSelectEntityType2))
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.Invoke(_common._orm, null);
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if (asSelectBefores.Any()) {
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asSelectParentExp1 = asSelectBefores.Pop() as MemberExpression;
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if (asSelectBefores.Any()) {
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asSelectParentExp = asSelectBefores.Pop();
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if (asSelectParentExp != null) {
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var testExecuteExp = asSelectParentExp;
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if (asSelectParentExp.NodeType == ExpressionType.Parameter) //执行leftjoin关联
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testExecuteExp = Expression.Property(testExecuteExp, _common.GetTableByEntity(asSelectParentExp.Type).Properties.First().Value);
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asSelectSql = ExpressionLambdaToSql(testExecuteExp, _tables, new List<SelectColumnInfo>(), getSelectGroupingMapString, SelectTableInfoType.LeftJoin, isQuoteName);
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}
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}
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}
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}
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}
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}
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}
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if (fsql == null) fsql = Expression.Lambda(exp3tmp).Compile().DynamicInvoke();
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fsqlType = fsql?.GetType();
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if (fsqlType == null) break;
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fsqlType.GetField("_limit", BindingFlags.Instance | BindingFlags.NonPublic).SetValue(fsql, 1);
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fsqltables = fsqlType.GetField("_tables", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(fsql) as List<SelectTableInfo>;
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//fsqltables[0].Alias = $"{_tables[0].Alias}_{fsqltables[0].Alias}";
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fsqltables.AddRange(_tables.Select(a => new SelectTableInfo {
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Alias = a.Alias,
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On = "1=1",
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Table = a.Table,
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Type = SelectTableInfoType.Parent,
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Parameter = a.Parameter
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}));
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} else if (fsqlType != null) {
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var call3Exp = exp3tmp as MethodCallExpression;
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var method = fsqlType.GetMethod(call3Exp.Method.Name, call3Exp.Arguments.Select(a => a.Type).ToArray());
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if (call3Exp.Method.ContainsGenericParameters) method.MakeGenericMethod(call3Exp.Method.GetGenericArguments());
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var parms = method.GetParameters();
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var args = new object[call3Exp.Arguments.Count];
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for (var a = 0; a < args.Length; a++) {
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var arg3Exp = call3Exp.Arguments[a];
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if (arg3Exp.NodeType == ExpressionType.Constant) {
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args[a] = (arg3Exp as ConstantExpression)?.Value;
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} else {
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var argExp = (arg3Exp as UnaryExpression)?.Operand;
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if (argExp != null && argExp.NodeType == ExpressionType.Lambda) {
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if (fsqltable1SetAlias == false) {
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fsqltables[0].Alias = (argExp as LambdaExpression).Parameters.First().Name;
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fsqltable1SetAlias = true;
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}
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}
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args[a] = argExp;
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//if (args[a] == null) ExpressionLambdaToSql(call3Exp.Arguments[a], fsqltables, null, null, SelectTableInfoType.From, true);
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}
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}
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method.Invoke(fsql, args);
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}
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if (fsql == null) asSelectBefores.Push(exp3tmp);
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}
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if (fsql != null) {
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||
if (asSelectParentExp != null) { //执行 asSelect() 的关联，OneToMany，ManyToMany
|
||
var fsqlWhere = _dicExpressionLambdaToSqlAsSelectWhereMethodInfo.GetOrAdd(asSelectEntityType, asSelectEntityType3 =>
|
||
typeof(ISelect<>).MakeGenericType(asSelectEntityType3).GetMethod("Where", new[] {
|
||
typeof(Expression<>).MakeGenericType(typeof(Func<,>).MakeGenericType(asSelectEntityType3, typeof(bool)))
|
||
}));
|
||
var parm123Tb = _common.GetTableByEntity(asSelectParentExp.Type);
|
||
var parm123Ref = parm123Tb.GetTableRef(asSelectParentExp1.Member.Name);
|
||
var fsqlWhereParam = fsqltables.First().Parameter; //Expression.Parameter(asSelectEntityType);
|
||
Expression fsqlWhereExp = null;
|
||
if (parm123Ref.RefType == TableRefType.ManyToMany) {
|
||
//g.mysql.Select<Tag>().Where(a => g.mysql.Select<Song_tag>().Where(b => b.Tag_id == a.Id && b.Song_id == 1).Any());
|
||
var manyTb = _common.GetTableByEntity(parm123Ref.RefMiddleEntityType);
|
||
var manySubSelectWhere = _dicExpressionLambdaToSqlAsSelectWhereMethodInfo.GetOrAdd(parm123Ref.RefMiddleEntityType, refMiddleEntityType3 =>
|
||
typeof(ISelect<>).MakeGenericType(refMiddleEntityType3).GetMethod("Where", new[] {
|
||
typeof(Expression<>).MakeGenericType(typeof(Func<,>).MakeGenericType(refMiddleEntityType3, typeof(bool)))
|
||
}));
|
||
var manySubSelectWhereSql = _dicExpressionLambdaToSqlAsSelectWhereSqlMethodInfo.GetOrAdd(parm123Ref.RefMiddleEntityType, refMiddleEntityType3 =>
|
||
typeof(ISelect0<,>).MakeGenericType(typeof(ISelect<>).MakeGenericType(refMiddleEntityType3), refMiddleEntityType3).GetMethod("Where", new[] { typeof(string), typeof(object) }));
|
||
var manySubSelectAny = _dicExpressionLambdaToSqlAsSelectAnyMethodInfo.GetOrAdd(parm123Ref.RefMiddleEntityType, refMiddleEntityType3 =>
|
||
typeof(ISelect0<,>).MakeGenericType(typeof(ISelect<>).MakeGenericType(refMiddleEntityType3), refMiddleEntityType3).GetMethod("Any", new Type[0]));
|
||
var manySubSelectAsSelectExp = _dicFreeSqlGlobalExtensionsAsSelectExpression.GetOrAdd(parm123Ref.RefMiddleEntityType, refMiddleEntityType3 =>
|
||
Expression.Call(
|
||
typeof(FreeSqlGlobalExtensions).GetMethods(BindingFlags.Static | BindingFlags.Public).Where(mfil => mfil.Name == "AsSelect" && mfil.GetParameters().Length == 1).FirstOrDefault()?.MakeGenericMethod(refMiddleEntityType3),
|
||
Expression.Constant(Activator.CreateInstance(typeof(List<>).MakeGenericType(refMiddleEntityType3)))
|
||
));
|
||
var manyMainParam = _tables[0].Parameter;
|
||
var manySubSelectWhereParam = Expression.Parameter(parm123Ref.RefMiddleEntityType, $"M{fsqlWhereParam.Name}_M{asSelectParentExp.ToString().Replace(".", "__")}");//, $"{fsqlWhereParam.Name}__");
|
||
Expression manySubSelectWhereExp = null;
|
||
for (var mn = 0; mn < parm123Ref.Columns.Count; mn++) {
|
||
var col1 = parm123Ref.MiddleColumns[mn];
|
||
var col2 = parm123Ref.Columns[mn];
|
||
var pexp1 = Expression.Property(manySubSelectWhereParam, col1.CsName);
|
||
var pexp2 = Expression.Property(asSelectParentExp, col2.CsName);
|
||
if (col1.CsType != col2.CsType) {
|
||
if (col1.CsType.IsNullableType()) pexp1 = Expression.Property(pexp1, _dicNullableValueProperty.GetOrAdd(col1.CsType, ct1 => ct1.GetProperty("Value")));
|
||
if (col2.CsType.IsNullableType()) pexp2 = Expression.Property(pexp2, _dicNullableValueProperty.GetOrAdd(col2.CsType, ct2 => ct2.GetProperty("Value")));
|
||
}
|
||
var tmpExp = Expression.Equal(pexp1, pexp2);
|
||
if (mn == 0) manySubSelectWhereExp = tmpExp;
|
||
else manySubSelectWhereExp = Expression.And(manySubSelectWhereExp, tmpExp);
|
||
}
|
||
var manySubSelectExpBoy = Expression.Call(
|
||
manySubSelectAsSelectExp,
|
||
manySubSelectWhere,
|
||
Expression.Lambda(
|
||
manySubSelectWhereExp,
|
||
manySubSelectWhereParam
|
||
)
|
||
);
|
||
Expression fsqlManyWhereExp = null;
|
||
for (var mn = 0; mn < parm123Ref.RefColumns.Count; mn++) {
|
||
var col1 = parm123Ref.RefColumns[mn];
|
||
var col2 = parm123Ref.MiddleColumns[mn + parm123Ref.Columns.Count + mn];
|
||
var pexp1 = Expression.Property(fsqlWhereParam, col1.CsName);
|
||
var pexp2 = Expression.Property(manySubSelectWhereParam, col2.CsName);
|
||
if (col1.CsType != col2.CsType) {
|
||
if (col1.CsType.IsNullableType()) pexp1 = Expression.Property(pexp1, _dicNullableValueProperty.GetOrAdd(col1.CsType, ct1 => ct1.GetProperty("Value")));
|
||
if (col2.CsType.IsNullableType()) pexp2 = Expression.Property(pexp2, _dicNullableValueProperty.GetOrAdd(col2.CsType, ct2 => ct2.GetProperty("Value")));
|
||
}
|
||
var tmpExp = Expression.Equal(pexp1, pexp2);
|
||
if (mn == 0) fsqlManyWhereExp = tmpExp;
|
||
else fsqlManyWhereExp = Expression.And(fsqlManyWhereExp, tmpExp);
|
||
}
|
||
fsqltables.Add(new SelectTableInfo { Alias = manySubSelectWhereParam.Name, Parameter = manySubSelectWhereParam, Table = manyTb, Type = SelectTableInfoType.Parent });
|
||
fsqlWhere.Invoke(fsql, new object[] { Expression.Lambda(fsqlManyWhereExp, fsqlWhereParam) });
|
||
var sql2 = fsqlType.GetMethod("ToSql", new Type[] { typeof(string) })?.Invoke(fsql, new object[] { "1" })?.ToString();
|
||
if (string.IsNullOrEmpty(sql2) == false)
|
||
manySubSelectExpBoy = Expression.Call(manySubSelectExpBoy, manySubSelectWhereSql, Expression.Constant($"exists({sql2.Replace("\r\n", "\r\n\t")})"), Expression.Constant(null));
|
||
manySubSelectExpBoy = Expression.Call(manySubSelectExpBoy, manySubSelectAny);
|
||
asSelectBefores.Clear();
|
||
|
||
return ExpressionLambdaToSql(manySubSelectExpBoy, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
}
|
||
for (var mn = 0; mn < parm123Ref.Columns.Count; mn++) {
|
||
var col1 = parm123Ref.RefColumns[mn];
|
||
var col2 = parm123Ref.Columns[mn];
|
||
var pexp1 = Expression.Property(fsqlWhereParam, col1.CsName);
|
||
var pexp2 = Expression.Property(asSelectParentExp, col2.CsName);
|
||
if (col1.CsType != col2.CsType) {
|
||
if (col1.CsType.IsNullableType()) pexp1 = Expression.Property(pexp1, _dicNullableValueProperty.GetOrAdd(col1.CsType, ct1 => ct1.GetProperty("Value")));
|
||
if (col2.CsType.IsNullableType()) pexp2 = Expression.Property(pexp2, _dicNullableValueProperty.GetOrAdd(col2.CsType, ct2 => ct2.GetProperty("Value")));
|
||
}
|
||
var tmpExp = Expression.Equal(pexp1, pexp2);
|
||
if (mn == 0) fsqlWhereExp = tmpExp;
|
||
else fsqlWhereExp = Expression.And(fsqlWhereExp, tmpExp);
|
||
}
|
||
fsqlWhere.Invoke(fsql, new object[] { Expression.Lambda(fsqlWhereExp, fsqlWhereParam) });
|
||
}
|
||
asSelectBefores.Clear();
|
||
var sql = fsqlType.GetMethod("ToSql", new Type[] { typeof(string) })?.Invoke(fsql, new object[] { "1" })?.ToString();
|
||
if (string.IsNullOrEmpty(sql) == false)
|
||
return $"exists({sql.Replace("\r\n", "\r\n\t")})";
|
||
}
|
||
asSelectBefores.Clear();
|
||
}
|
||
}
|
||
//var eleType = callType.GetElementType() ?? callType.GenericTypeArguments.FirstOrDefault();
|
||
//if (eleType != null && typeof(IEnumerable<>).MakeGenericType(eleType).IsAssignableFrom(callType)) { //集合导航属性子查询
|
||
// if (exp3.Method.Name == "Any") { //exists
|
||
|
||
// }
|
||
//}
|
||
var other3Exp = ExpressionLambdaToSqlOther(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
if (string.IsNullOrEmpty(other3Exp) == false) return other3Exp;
|
||
throw new Exception($"未实现函数表达式 {exp3} 解析");
|
||
case ExpressionType.MemberAccess:
|
||
var exp4 = exp as MemberExpression;
|
||
if (exp4.Expression != null && exp4.Expression.Type.IsArray == false && exp4.Expression.Type.IsNullableType()) return ExpressionLambdaToSql(exp4.Expression, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
var extRet = "";
|
||
var memberType = exp4.Expression?.Type ?? exp4.Type;
|
||
switch (memberType.FullName) {
|
||
case "System.String": extRet = ExpressionLambdaToSqlMemberAccessString(exp4, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName); break;
|
||
case "System.DateTime": extRet = ExpressionLambdaToSqlMemberAccessDateTime(exp4, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName); break;
|
||
case "System.TimeSpan": extRet = ExpressionLambdaToSqlMemberAccessTimeSpan(exp4, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName); break;
|
||
}
|
||
if (string.IsNullOrEmpty(extRet) == false) return extRet;
|
||
var other4Exp = ExpressionLambdaToSqlOther(exp4, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
if (string.IsNullOrEmpty(other4Exp) == false) return other4Exp;
|
||
|
||
var expStack = new Stack<Expression>();
|
||
expStack.Push(exp);
|
||
MethodCallExpression callExp = null;
|
||
var exp2 = exp4.Expression;
|
||
while (true) {
|
||
switch(exp2?.NodeType) {
|
||
case ExpressionType.Constant:
|
||
expStack.Push(exp2);
|
||
break;
|
||
case ExpressionType.Parameter:
|
||
expStack.Push(exp2);
|
||
break;
|
||
case ExpressionType.MemberAccess:
|
||
expStack.Push(exp2);
|
||
exp2 = (exp2 as MemberExpression).Expression;
|
||
if (exp2 == null) break;
|
||
continue;
|
||
case ExpressionType.Call:
|
||
callExp = exp2 as MethodCallExpression;
|
||
expStack.Push(exp2);
|
||
exp2 = callExp.Object;
|
||
if (exp2 == null) break;
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
if (expStack.First().NodeType != ExpressionType.Parameter) return _common.FormatSql("{0}", Expression.Lambda(exp).Compile().DynamicInvoke());
|
||
if (callExp != null) return ExpressionLambdaToSql(callExp, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
if (getSelectGroupingMapString != null && expStack.First().Type.FullName.StartsWith("FreeSql.ISelectGroupingAggregate`")) {
|
||
if (getSelectGroupingMapString != null) {
|
||
var expText = getSelectGroupingMapString(expStack.Where((a, b) => b >= 2).ToArray());
|
||
if (string.IsNullOrEmpty(expText) == false) return expText;
|
||
}
|
||
}
|
||
|
||
if (_tables == null) {
|
||
var pp = expStack.Pop() as ParameterExpression;
|
||
var memberExp = expStack.Pop() as MemberExpression;
|
||
var tb = _common.GetTableByEntity(pp.Type);
|
||
if (tb.ColumnsByCs.ContainsKey(memberExp.Member.Name) == false) throw new ArgumentException($"{tb.DbName} 找不到列 {memberExp.Member.Name}");
|
||
if (_selectColumnMap != null) {
|
||
_selectColumnMap.Add(new SelectColumnInfo { Table = null, Column = tb.ColumnsByCs[memberExp.Member.Name] });
|
||
}
|
||
var name = tb.ColumnsByCs[memberExp.Member.Name].Attribute.Name;
|
||
if (isQuoteName) name = _common.QuoteSqlName(name);
|
||
return name;
|
||
}
|
||
Func<TableInfo, string, bool, ParameterExpression, MemberExpression, SelectTableInfo> getOrAddTable = (tbtmp, alias, isa, parmExp, mp) => {
|
||
var finds = new SelectTableInfo[0];
|
||
if (isa && parmExp != null)
|
||
finds = _tables.Where(a => a.Parameter == parmExp).ToArray();
|
||
if (finds.Length != 1) {
|
||
var navdot = string.IsNullOrEmpty(alias) ? new SelectTableInfo[0] : _tables.Where(a2 => a2.Parameter != null && alias.StartsWith($"{a2.Alias}__")).ToArray();
|
||
if (navdot.Length > 0) {
|
||
var isthis = navdot[0] == _tables[0];
|
||
finds = _tables.Where(a2 => (isa && a2.Parameter != null || !isa && a2.Parameter == null) &&
|
||
a2.Table.Type == tbtmp.Type && a2.Alias == alias && a2.Alias.StartsWith($"{navdot[0].Alias}__") &&
|
||
(isthis && a2.Type != SelectTableInfoType.Parent || !isthis && a2.Type == SelectTableInfoType.Parent)).ToArray();
|
||
if (finds.Length == 0)
|
||
finds = _tables.Where(a2 =>
|
||
a2.Table.Type == tbtmp.Type && a2.Alias == alias && a2.Alias.StartsWith($"{navdot[0].Alias}__") &&
|
||
(isthis && a2.Type != SelectTableInfoType.Parent || !isthis && a2.Type == SelectTableInfoType.Parent)).ToArray();
|
||
} else {
|
||
finds = _tables.Where(a2 => (isa && a2.Parameter != null || isa && a2.Parameter == null) &&
|
||
a2.Table.Type == tbtmp.Type && a2.Alias == alias).ToArray();
|
||
if (finds.Length != 1) {
|
||
finds = _tables.Where(a2 => (isa && a2.Parameter != null || isa && a2.Parameter == null) &&
|
||
a2.Table.Type == tbtmp.Type).ToArray();
|
||
if (finds.Length != 1) {
|
||
finds = _tables.Where(a2 => (isa && a2.Parameter != null || isa && a2.Parameter == null) &&
|
||
a2.Table.Type == tbtmp.Type).ToArray();
|
||
if (finds.Length != 1)
|
||
finds = _tables.Where(a2 => a2.Table.Type == tbtmp.Type).ToArray();
|
||
}
|
||
}
|
||
}
|
||
//finds = _tables.Where((a2, c2) => (isa || a2.Parameter == null) && a2.Table.CsName == tbtmp.CsName && (isthis && a2.Type != SelectTableInfoType.Parent || !isthis)).ToArray(); //外部表，内部表一起查
|
||
//if (finds.Length > 1) {
|
||
// finds = _tables.Where((a2, c2) => (isa || a2.Parameter == null) && a2.Table.CsName == tbtmp.CsName && a2.Type == SelectTableInfoType.Parent && a2.Alias == alias).ToArray(); //查询外部表
|
||
// if (finds.Any() == false) {
|
||
// finds = _tables.Where((a2, c2) => (isa || a2.Parameter == null) && a2.Table.CsName == tbtmp.CsName && a2.Type != SelectTableInfoType.Parent).ToArray(); //查询内部表
|
||
// if (finds.Length > 1)
|
||
// finds = _tables.Where((a2, c2) => (isa || a2.Parameter == null) && a2.Table.CsName == tbtmp.CsName && a2.Type != SelectTableInfoType.Parent && a2.Alias == alias).ToArray();
|
||
// }
|
||
//}
|
||
}
|
||
var find = finds.Length == 1 ? finds.First() : null;
|
||
if (find != null && isa && parmExp != null && find.Parameter != parmExp)
|
||
find.Parameter = parmExp;
|
||
if (find == null) {
|
||
_tables.Add(find = new SelectTableInfo { Table = tbtmp, Alias = alias, On = null, Type = mp == null ? tbtype : SelectTableInfoType.LeftJoin, Parameter = isa ? parmExp : null });
|
||
if (mp?.Expression != null) { //导航条件，OneToOne、ManyToOne
|
||
var firstTb = _tables.First().Table;
|
||
var parentTb = _common.GetTableByEntity(mp.Expression.Type);
|
||
var parentTbRef = parentTb.GetTableRef(mp.Member.Name);
|
||
Expression navCondExp = null;
|
||
for (var mn = 0; mn < parentTbRef.Columns.Count; mn++) {
|
||
var col1 = parentTbRef.RefColumns[mn];
|
||
var col2 = parentTbRef.Columns[mn];
|
||
var pexp1 = Expression.Property(mp, col1.CsName);
|
||
var pexp2 = Expression.Property(mp.Expression, col2.CsName);
|
||
if (col1.CsType != col2.CsType) {
|
||
if (col1.CsType.IsNullableType()) pexp1 = Expression.Property(pexp1, _dicNullableValueProperty.GetOrAdd(col1.CsType, ct1 => ct1.GetProperty("Value")));
|
||
if (col2.CsType.IsNullableType()) pexp2 = Expression.Property(pexp2, _dicNullableValueProperty.GetOrAdd(col2.CsType, ct2 => ct2.GetProperty("Value")));
|
||
}
|
||
var tmpExp = Expression.Equal(pexp1, pexp2);
|
||
if (mn == 0) navCondExp = tmpExp;
|
||
else navCondExp = Expression.And(navCondExp, tmpExp);
|
||
}
|
||
if (find.Type == SelectTableInfoType.InnerJoin ||
|
||
find.Type == SelectTableInfoType.LeftJoin ||
|
||
find.Type == SelectTableInfoType.RightJoin)
|
||
find.On = ExpressionLambdaToSql(navCondExp, _tables, null, null, find.Type, isQuoteName);
|
||
else
|
||
find.NavigateCondition = ExpressionLambdaToSql(navCondExp, _tables, null, null, find.Type, isQuoteName);
|
||
}
|
||
}
|
||
return find;
|
||
};
|
||
|
||
TableInfo tb2 = null;
|
||
ParameterExpression parmExp2 = null;
|
||
string alias2 = "", name2 = "";
|
||
SelectTableInfo find2 = null;
|
||
while (expStack.Count > 0) {
|
||
exp2 = expStack.Pop();
|
||
switch (exp2.NodeType) {
|
||
case ExpressionType.Constant:
|
||
throw new NotImplementedException("未实现 MemberAccess 下的 Constant");
|
||
case ExpressionType.Parameter:
|
||
case ExpressionType.MemberAccess:
|
||
|
||
var exp2Type = exp2.Type;
|
||
if (exp2Type.FullName.StartsWith("FreeSql.ISelectGroupingAggregate`")) exp2Type = exp2Type.GenericTypeArguments.FirstOrDefault() ?? exp2.Type;
|
||
var tb2tmp = _common.GetTableByEntity(exp2Type);
|
||
var mp2 = exp2 as MemberExpression;
|
||
if (mp2?.Member.Name == "Key" && mp2.Expression.Type.FullName.StartsWith("FreeSql.ISelectGroupingAggregate`")) continue;
|
||
if (tb2tmp != null) {
|
||
if (exp2.NodeType == ExpressionType.Parameter) {
|
||
parmExp2 = (exp2 as ParameterExpression);
|
||
alias2 = parmExp2.Name;
|
||
} else alias2 = $"{alias2}__{mp2.Member.Name}";
|
||
find2 = getOrAddTable(tb2tmp, alias2, exp2.NodeType == ExpressionType.Parameter, parmExp2, mp2);
|
||
alias2 = find2.Alias;
|
||
tb2 = tb2tmp;
|
||
}
|
||
if (mp2 == null || expStack.Any()) continue;
|
||
if (tb2.ColumnsByCs.ContainsKey(mp2.Member.Name) == false) { //如果选的是对象，附加所有列
|
||
if (_selectColumnMap != null) {
|
||
var tb3 = _common.GetTableByEntity(mp2.Type);
|
||
if (tb3 != null) {
|
||
var find3 = getOrAddTable(tb2tmp, alias2 /*$"{alias2}__{mp2.Member.Name}"*/, exp2.NodeType == ExpressionType.Parameter, parmExp2, mp2);
|
||
|
||
foreach (var tb3c in tb3.Columns.Values)
|
||
_selectColumnMap.Add(new SelectColumnInfo { Table = find3, Column = tb3c });
|
||
if (tb3.Columns.Any()) return "";
|
||
}
|
||
}
|
||
throw new ArgumentException($"{tb2.DbName} 找不到列 {mp2.Member.Name}");
|
||
}
|
||
var col2 = tb2.ColumnsByCs[mp2.Member.Name];
|
||
if (_selectColumnMap != null && find2 != null) {
|
||
_selectColumnMap.Add(new SelectColumnInfo { Table = find2, Column = col2 });
|
||
return "";
|
||
}
|
||
name2 = tb2.ColumnsByCs[mp2.Member.Name].Attribute.Name;
|
||
break;
|
||
case ExpressionType.Call:break;
|
||
}
|
||
}
|
||
if (isQuoteName) name2 = _common.QuoteSqlName(name2);
|
||
return $"{alias2}.{name2}";
|
||
}
|
||
var expBinary = exp as BinaryExpression;
|
||
if (expBinary == null) {
|
||
var other99Exp = ExpressionLambdaToSqlOther(exp, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
if (string.IsNullOrEmpty(other99Exp) == false) return other99Exp;
|
||
return "";
|
||
}
|
||
if (expBinary.NodeType == ExpressionType.Coalesce) {
|
||
return _common.IsNull(
|
||
ExpressionLambdaToSql(expBinary.Left, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName),
|
||
ExpressionLambdaToSql(expBinary.Right, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName));
|
||
}
|
||
if (dicExpressionOperator.TryGetValue(expBinary.NodeType, out var tryoper) == false) return "";
|
||
var left = ExpressionLambdaToSql(expBinary.Left, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
var right = ExpressionLambdaToSql(expBinary.Right, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
|
||
if (left == "NULL") {
|
||
var tmp = right;
|
||
right = left;
|
||
left = tmp;
|
||
}
|
||
if (right == "NULL") tryoper = tryoper == "=" ? " IS " : " IS NOT ";
|
||
if (tryoper == "+" && (expBinary.Left.Type.FullName == "System.String" || expBinary.Right.Type.FullName == "System.String")) return _common.StringConcat(left, right, expBinary.Left.Type, expBinary.Right.Type);
|
||
if (tryoper == "%") return _common.Mod(left, right, expBinary.Left.Type, expBinary.Right.Type);
|
||
return $"{left} {tryoper} {right}";
|
||
}
|
||
|
||
internal abstract string ExpressionLambdaToSqlMemberAccessString(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
|
||
internal abstract string ExpressionLambdaToSqlMemberAccessDateTime(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlMemberAccessTimeSpan(MemberExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlCallString(MethodCallExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlCallMath(MethodCallExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlCallDateTime(MethodCallExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlCallTimeSpan(MethodCallExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlCallConvert(MethodCallExpression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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internal abstract string ExpressionLambdaToSqlOther(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName);
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}
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}
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