mirror of
https://github.com/nsnail/FreeSql.git
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01b31c095b
- 修复 ToList(a => new Dto { .. }) 在使用 GroupBy 之后报错的 bug；
- 修复 注释迁移到数据库，在 asp.net 4.7 无效的问题；
467 lines
26 KiB
C#
467 lines
26 KiB
C#
using FreeSql.Internal;
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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.Linq;
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using System.Linq.Expressions;
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using System.Text;
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namespace FreeSql.Sqlite
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{
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class SqliteExpression : CommonExpression
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{
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public SqliteExpression(CommonUtils common) : base(common) { }
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public override string ExpressionLambdaToSqlOther(Expression exp, ExpTSC tsc)
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{
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Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
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switch (exp.NodeType)
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{
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case ExpressionType.Convert:
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var operandExp = (exp as UnaryExpression)?.Operand;
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var gentype = exp.Type.NullableTypeOrThis();
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if (gentype != operandExp.Type.NullableTypeOrThis())
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{
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switch (exp.Type.NullableTypeOrThis().ToString())
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{
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case "System.Boolean": return $"({getExp(operandExp)} not in ('0','false'))";
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case "System.Byte": return $"cast({getExp(operandExp)} as int2)";
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case "System.Char": return $"substr(cast({getExp(operandExp)} as character), 1, 1)";
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case "System.DateTime": return $"datetime({getExp(operandExp)})";
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case "System.Decimal": return $"cast({getExp(operandExp)} as decimal(36,18))";
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case "System.Double": return $"cast({getExp(operandExp)} as double)";
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case "System.Int16":
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case "System.Int32":
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case "System.Int64":
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case "System.SByte": return $"cast({getExp(operandExp)} as smallint)";
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case "System.Single": return $"cast({getExp(operandExp)} as float)";
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case "System.String": return $"cast({getExp(operandExp)} as character)";
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case "System.UInt16": return $"cast({getExp(operandExp)} as unsigned)";
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case "System.UInt32": return $"cast({getExp(operandExp)} as decimal(10,0))";
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case "System.UInt64": return $"cast({getExp(operandExp)} as decimal(21,0))";
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case "System.Guid": return $"substr(cast({getExp(operandExp)} as character), 1, 36)";
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}
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}
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break;
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case ExpressionType.Call:
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var callExp = exp as MethodCallExpression;
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switch (callExp.Method.Name)
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{
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case "Parse":
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case "TryParse":
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switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString())
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{
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case "System.Boolean": return $"({getExp(callExp.Arguments[0])} not in ('0','false'))";
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case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as int2)";
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case "System.Char": return $"substr(cast({getExp(callExp.Arguments[0])} as character), 1, 1)";
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case "System.DateTime": return $"datetime({getExp(callExp.Arguments[0])})";
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case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as decimal(36,18))";
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case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as double)";
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case "System.Int16":
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case "System.Int32":
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case "System.Int64":
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case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as smallint)";
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case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as float)";
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case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as unsigned)";
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case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as decimal(10,0))";
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case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as decimal(21,0))";
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case "System.Guid": return $"substr(cast({getExp(callExp.Arguments[0])} as character), 1, 36)";
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}
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break;
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case "NewGuid":
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break;
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case "Next":
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if (callExp.Object?.Type == typeof(Random)) return "cast(random()*1000000000 as int)";
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break;
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case "NextDouble":
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if (callExp.Object?.Type == typeof(Random)) return "random()";
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break;
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case "Random":
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if (callExp.Method.DeclaringType.IsNumberType()) return "random()";
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break;
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case "ToString":
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if (callExp.Object != null) return callExp.Arguments.Count == 0 ? $"cast({getExp(callExp.Object)} as character)" : null;
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break;
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}
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var objExp = callExp.Object;
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var objType = objExp?.Type;
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if (objType?.FullName == "System.Byte[]") return null;
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var argIndex = 0;
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if (objType == null && callExp.Method.DeclaringType == typeof(Enumerable))
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{
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objExp = callExp.Arguments.FirstOrDefault();
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objType = objExp?.Type;
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argIndex++;
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}
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if (objType == null) objType = callExp.Method.DeclaringType;
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if (objType != null || objType.IsArrayOrList())
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{
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tsc.SetMapColumnTmp(null);
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var args1 = getExp(callExp.Arguments[argIndex]);
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var oldMapType = tsc.SetMapTypeReturnOld(tsc.mapTypeTmp);
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var oldDbParams = tsc.SetDbParamsReturnOld(null);
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var left = objExp == null ? null : getExp(objExp);
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tsc.SetMapColumnTmp(null).SetMapTypeReturnOld(oldMapType);
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tsc.SetDbParamsReturnOld(oldDbParams);
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switch (callExp.Method.Name)
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{
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case "Contains":
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//判断 in //在各大 Provider AdoProvider 中已约定，500元素分割, 3空格\r\n4空格
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return $"(({args1}) in {left.Replace(", \r\n \r\n", $") \r\n OR ({args1}) in (")})";
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}
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}
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break;
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case ExpressionType.NewArrayInit:
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var arrExp = exp as NewArrayExpression;
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var arrSb = new StringBuilder();
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arrSb.Append("(");
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for (var a = 0; a < arrExp.Expressions.Count; a++)
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{
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if (a > 0) arrSb.Append(",");
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arrSb.Append(getExp(arrExp.Expressions[a]));
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}
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if (arrSb.Length == 1) arrSb.Append("NULL");
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return arrSb.Append(")").ToString();
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case ExpressionType.ListInit:
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var listExp = exp as ListInitExpression;
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var listSb = new StringBuilder();
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listSb.Append("(");
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for (var a = 0; a < listExp.Initializers.Count; a++)
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{
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if (listExp.Initializers[a].Arguments.Any() == false) continue;
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if (a > 0) listSb.Append(",");
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listSb.Append(getExp(listExp.Initializers[a].Arguments.FirstOrDefault()));
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}
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if (listSb.Length == 1) listSb.Append("NULL");
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return listSb.Append(")").ToString();
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case ExpressionType.New:
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var newExp = exp as NewExpression;
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if (typeof(IList).IsAssignableFrom(newExp.Type))
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{
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if (newExp.Arguments.Count == 0) return "(NULL)";
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if (typeof(IEnumerable).IsAssignableFrom(newExp.Arguments[0].Type) == false) return "(NULL)";
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return getExp(newExp.Arguments[0]);
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}
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return null;
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}
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return null;
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}
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public override string ExpressionLambdaToSqlMemberAccessString(MemberExpression exp, ExpTSC tsc)
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{
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if (exp.Expression == null)
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{
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switch (exp.Member.Name)
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{
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case "Empty": return "''";
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}
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return null;
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}
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var left = ExpressionLambdaToSql(exp.Expression, tsc);
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switch (exp.Member.Name)
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{
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case "Length": return $"length({left})";
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}
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return null;
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}
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public override string ExpressionLambdaToSqlMemberAccessDateTime(MemberExpression exp, ExpTSC tsc)
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{
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if (exp.Expression == null)
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{
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switch (exp.Member.Name)
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{
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case "Now": return _common.Now;
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case "UtcNow": return _common.NowUtc;
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case "Today": return "date(current_timestamp,'localtime')";
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case "MinValue": return "datetime('0001-01-01 00:00:00.000')";
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case "MaxValue": return "datetime('9999-12-31 23:59:59.999')";
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}
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return null;
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}
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var left = ExpressionLambdaToSql(exp.Expression, tsc);
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switch (exp.Member.Name)
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{
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case "Date": return $"date({left})";
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case "TimeOfDay": return $"strftime('%s',{left})";
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case "DayOfWeek": return $"strftime('%w',{left})";
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case "Day": return $"strftime('%d',{left})";
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case "DayOfYear": return $"strftime('%j',{left})";
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case "Month": return $"strftime('%m',{left})";
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case "Year": return $"strftime('%Y',{left})";
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case "Hour": return $"strftime('%H',{left})";
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case "Minute": return $"strftime('%M',{left})";
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case "Second": return $"strftime('%S',{left})";
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case "Millisecond": return $"(strftime('%f',{left})-strftime('%S',{left}))";
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case "Ticks": return $"(strftime('%s',{left})*10000000+621355968000000000)";
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}
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return null;
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}
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public override string ExpressionLambdaToSqlMemberAccessTimeSpan(MemberExpression exp, ExpTSC tsc)
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{
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if (exp.Expression == null)
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{
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switch (exp.Member.Name)
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{
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case "Zero": return "0";
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case "MinValue": return "-922337203685.477580"; //秒 Ticks / 1000,000,0
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case "MaxValue": return "922337203685.477580";
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}
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return null;
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}
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var left = ExpressionLambdaToSql(exp.Expression, tsc);
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switch (exp.Member.Name)
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{
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case "Days": return $"floor(({left})/{60 * 60 * 24})";
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case "Hours": return $"floor(({left})/{60 * 60}%24)";
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case "Milliseconds": return $"(cast({left} as bigint)*1000)";
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case "Minutes": return $"floor(({left})/60%60)";
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case "Seconds": return $"(({left})%60)";
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case "Ticks": return $"(cast({left} as bigint)*10000000)";
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case "TotalDays": return $"(({left})/{60 * 60 * 24})";
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case "TotalHours": return $"(({left})/{60 * 60})";
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case "TotalMilliseconds": return $"(cast({left} as bigint)*1000)";
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case "TotalMinutes": return $"(({left})/60)";
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case "TotalSeconds": return $"({left})";
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}
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return null;
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}
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public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp, ExpTSC tsc)
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{
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Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
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if (exp.Object == null)
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{
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switch (exp.Method.Name)
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{
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case "IsNullOrEmpty":
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var arg1 = getExp(exp.Arguments[0]);
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return $"({arg1} is null or {arg1} = '')";
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case "IsNullOrWhiteSpace":
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var arg2 = getExp(exp.Arguments[0]);
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return $"({arg2} is null or {arg2} = '' or ltrim({arg2}) = '')";
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case "Concat":
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return _common.StringConcat(exp.Arguments.Select(a => getExp(a)).ToArray(), null);
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}
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}
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else
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{
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var left = getExp(exp.Object);
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switch (exp.Method.Name)
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{
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case "StartsWith":
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case "EndsWith":
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case "Contains":
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var args0Value = getExp(exp.Arguments[0]);
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if (args0Value == "NULL") return $"({left}) IS NULL";
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if (exp.Method.Name == "StartsWith") return $"({left}) LIKE {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"({args0Value})||'%'")}";
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if (exp.Method.Name == "EndsWith") return $"({left}) LIKE {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"'%'||({args0Value})")}";
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if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) LIKE {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}";
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return $"({left}) LIKE '%'||({args0Value})||'%'";
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case "ToLower": return $"lower({left})";
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case "ToUpper": return $"upper({left})";
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case "Substring":
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var substrArgs1 = getExp(exp.Arguments[0]);
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if (long.TryParse(substrArgs1, out var testtrylng1)) substrArgs1 = (testtrylng1 + 1).ToString();
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else substrArgs1 += "+1";
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if (exp.Arguments.Count == 1) return $"substr({left}, {substrArgs1})";
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return $"substr({left}, {substrArgs1}, {getExp(exp.Arguments[1])})";
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case "IndexOf":
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var indexOfFindStr = getExp(exp.Arguments[0]);
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//if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") {
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// var locateArgs1 = getExp(exp.Arguments[1]);
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// if (long.TryParse(locateArgs1, out var testtrylng2)) locateArgs1 = (testtrylng2 + 1).ToString();
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// else locateArgs1 += "+1";
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// return $"(instr({left}, {indexOfFindStr}, {locateArgs1})-1)";
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//}
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return $"(instr({left}, {indexOfFindStr})-1)";
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case "PadLeft":
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if (exp.Arguments.Count == 1) return $"lpad({left}, {getExp(exp.Arguments[0])})";
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return $"lpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
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case "PadRight":
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if (exp.Arguments.Count == 1) return $"rpad({left}, {getExp(exp.Arguments[0])})";
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return $"rpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
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case "Trim":
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case "TrimStart":
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case "TrimEnd":
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if (exp.Arguments.Count == 0)
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{
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if (exp.Method.Name == "Trim") return $"trim({left})";
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if (exp.Method.Name == "TrimStart") return $"ltrim({left})";
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if (exp.Method.Name == "TrimEnd") return $"rtrim({left})";
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}
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var trimArg1 = "";
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var trimArg2 = "";
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foreach (var argsTrim02 in exp.Arguments)
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{
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var argsTrim01s = new[] { argsTrim02 };
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if (argsTrim02.NodeType == ExpressionType.NewArrayInit)
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{
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var arritem = argsTrim02 as NewArrayExpression;
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argsTrim01s = arritem.Expressions.ToArray();
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}
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foreach (var argsTrim01 in argsTrim01s)
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{
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var trimChr = getExp(argsTrim01).Trim('\'');
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if (trimChr.Length == 1) trimArg1 += trimChr;
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else trimArg2 += $" || ({trimChr})";
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}
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}
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if (exp.Method.Name == "Trim") left = $"trim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})";
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if (exp.Method.Name == "TrimStart") left = $"ltrim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})";
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if (exp.Method.Name == "TrimEnd") left = $"rtrim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})";
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return left;
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case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
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case "CompareTo": return $"case when {left} = {getExp(exp.Arguments[0])} then 0 when {left} > {getExp(exp.Arguments[0])} then 1 else -1 end";
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case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
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}
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}
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return null;
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}
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public override string ExpressionLambdaToSqlCallMath(MethodCallExpression exp, ExpTSC tsc)
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{
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Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
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switch (exp.Method.Name)
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{
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case "Abs": return $"abs({getExp(exp.Arguments[0])})";
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case "Sign": return $"sign({getExp(exp.Arguments[0])})";
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case "Floor": return $"floor({getExp(exp.Arguments[0])})";
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case "Ceiling": return $"ceiling({getExp(exp.Arguments[0])})";
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case "Round":
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if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") return $"round({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
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return $"round({getExp(exp.Arguments[0])})";
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case "Exp": return $"exp({getExp(exp.Arguments[0])})";
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case "Log": return $"log({getExp(exp.Arguments[0])})";
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case "Log10": return $"log10({getExp(exp.Arguments[0])})";
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case "Pow": return $"power({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
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case "Sqrt": return $"sqrt({getExp(exp.Arguments[0])})";
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case "Cos": return $"cos({getExp(exp.Arguments[0])})";
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case "Sin": return $"sin({getExp(exp.Arguments[0])})";
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case "Tan": return $"tan({getExp(exp.Arguments[0])})";
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case "Acos": return $"acos({getExp(exp.Arguments[0])})";
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case "Asin": return $"asin({getExp(exp.Arguments[0])})";
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case "Atan": return $"atan({getExp(exp.Arguments[0])})";
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case "Atan2": return $"atan2({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
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//case "Truncate": return $"truncate({getExp(exp.Arguments[0])}, 0)";
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}
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return null;
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}
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public override string ExpressionLambdaToSqlCallDateTime(MethodCallExpression exp, ExpTSC tsc)
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{
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Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
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if (exp.Object == null)
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{
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switch (exp.Method.Name)
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{
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case "Compare": return $"(strftime('%s',{getExp(exp.Arguments[0])}) -strftime('%s',{getExp(exp.Arguments[1])}))";
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case "DaysInMonth": return $"strftime('%d',date({getExp(exp.Arguments[0])}||'-01-01',{getExp(exp.Arguments[1])}||' months','-1 days'))";
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case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})";
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case "IsLeapYear":
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var isLeapYearArgs1 = getExp(exp.Arguments[0]);
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return $"(({isLeapYearArgs1})%4=0 AND ({isLeapYearArgs1})%100<>0 OR ({isLeapYearArgs1})%400=0)";
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case "Parse": return $"datetime({getExp(exp.Arguments[0])})";
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case "ParseExact":
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case "TryParse":
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case "TryParseExact": return $"datetime({getExp(exp.Arguments[0])})";
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}
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}
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else
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{
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var left = getExp(exp.Object);
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var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
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switch (exp.Method.Name)
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{
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case "Add": return $"datetime({left},({args1})||' seconds')";
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case "AddDays": return $"datetime({left},({args1})||' days')";
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case "AddHours": return $"datetime({left},({args1})||' hours')";
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case "AddMilliseconds": return $"datetime({left},(({args1})/1000)||' seconds')";
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case "AddMinutes": return $"datetime({left},({args1})||' seconds')";
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case "AddMonths": return $"datetime({left},({args1})||' months')";
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case "AddSeconds": return $"datetime({left},({args1})||' seconds')";
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case "AddTicks": return $"datetime({left},(({args1})/10000000)||' seconds')";
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case "AddYears": return $"datetime({left},({args1})||' years')";
|
||
case "Subtract":
|
||
switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GetGenericArguments().FirstOrDefault() : exp.Arguments[0].Type).FullName)
|
||
{
|
||
case "System.DateTime": return $"(strftime('%s',{left})-strftime('%s',{args1}))";
|
||
case "System.TimeSpan": return $"datetime({left},(({args1})*-1)||' seconds')";
|
||
}
|
||
break;
|
||
case "Equals": return $"({left} = {args1})";
|
||
case "CompareTo": return $"(strftime('%s',{left})-strftime('%s',{args1}))";
|
||
case "ToString": return exp.Arguments.Count == 0 ? $"strftime('%Y-%m-%d %H:%M.%f',{left})" : null;
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
public override string ExpressionLambdaToSqlCallTimeSpan(MethodCallExpression exp, ExpTSC tsc)
|
||
{
|
||
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
|
||
if (exp.Object == null)
|
||
{
|
||
switch (exp.Method.Name)
|
||
{
|
||
case "Compare": return $"({getExp(exp.Arguments[0])}-({getExp(exp.Arguments[1])}))";
|
||
case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})";
|
||
case "FromDays": return $"(({getExp(exp.Arguments[0])})*{60 * 60 * 24})";
|
||
case "FromHours": return $"(({getExp(exp.Arguments[0])})*{60 * 60})";
|
||
case "FromMilliseconds": return $"(({getExp(exp.Arguments[0])})/1000)";
|
||
case "FromMinutes": return $"(({getExp(exp.Arguments[0])})*60)";
|
||
case "FromSeconds": return $"(({getExp(exp.Arguments[0])}))";
|
||
case "FromTicks": return $"(({getExp(exp.Arguments[0])})/10000000)";
|
||
case "Parse": return $"cast({getExp(exp.Arguments[0])} as bigint)";
|
||
case "ParseExact":
|
||
case "TryParse":
|
||
case "TryParseExact": return $"cast({getExp(exp.Arguments[0])} as bigint)";
|
||
}
|
||
}
|
||
else
|
||
{
|
||
var left = getExp(exp.Object);
|
||
var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
|
||
switch (exp.Method.Name)
|
||
{
|
||
case "Add": return $"({left}+{args1})";
|
||
case "Subtract": return $"({left}-({args1}))";
|
||
case "Equals": return $"({left} = {args1})";
|
||
case "CompareTo": return $"({left}-({args1}))";
|
||
case "ToString": return $"cast({left} as character)";
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
public override string ExpressionLambdaToSqlCallConvert(MethodCallExpression exp, ExpTSC tsc)
|
||
{
|
||
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
|
||
if (exp.Object == null)
|
||
{
|
||
switch (exp.Method.Name)
|
||
{
|
||
case "ToBoolean": return $"({getExp(exp.Arguments[0])} not in ('0','false'))";
|
||
case "ToByte": return $"cast({getExp(exp.Arguments[0])} as int2)";
|
||
case "ToChar": return $"substr(cast({getExp(exp.Arguments[0])} as character), 1, 1)";
|
||
case "ToDateTime": return $"datetime({getExp(exp.Arguments[0])})";
|
||
case "ToDecimal": return $"cast({getExp(exp.Arguments[0])} as decimal(36,18))";
|
||
case "ToDouble": return $"cast({getExp(exp.Arguments[0])} as double)";
|
||
case "ToInt16":
|
||
case "ToInt32":
|
||
case "ToInt64":
|
||
case "ToSByte": return $"cast({getExp(exp.Arguments[0])} as smallint)";
|
||
case "ToSingle": return $"cast({getExp(exp.Arguments[0])} as float)";
|
||
case "ToString": return $"cast({getExp(exp.Arguments[0])} as character)";
|
||
case "ToUInt16": return $"cast({getExp(exp.Arguments[0])} as unsigned)";
|
||
case "ToUInt32": return $"cast({getExp(exp.Arguments[0])} as decimal(10,0))";
|
||
case "ToUInt64": return $"cast({getExp(exp.Arguments[0])} as decimal(21,0))";
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
}
|
||
}
|