mirror of
https://github.com/nsnail/FreeSql.git
synced 2025-04-30 14:32:50 +08:00
576 lines
35 KiB
C#
576 lines
35 KiB
C#
using FreeSql.Internal;
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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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using System.Text.RegularExpressions;
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namespace FreeSql.ShenTong
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{
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class ShenTongExpression : CommonExpression
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{
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public ShenTongExpression(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)})::text not in ('0','false','f','no'))";
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case "System.Byte": return $"({getExp(operandExp)})::int2";
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case "System.Char": return $"substr(({getExp(operandExp)})::char, 1, 1)";
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case "System.DateTime": return $"({getExp(operandExp)})::timestamp";
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case "System.Decimal": return $"({getExp(operandExp)})::numeric";
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case "System.Double": return $"({getExp(operandExp)})::float8";
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case "System.Int16": return $"({getExp(operandExp)})::int2";
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case "System.Int32": return $"({getExp(operandExp)})::int4";
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case "System.Int64": return $"({getExp(operandExp)})::int8";
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case "System.SByte": return $"({getExp(operandExp)})::int2";
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case "System.Single": return $"({getExp(operandExp)})::float4";
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case "System.String": return $"({getExp(operandExp)})::text";
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case "System.UInt16": return $"({getExp(operandExp)})::int2";
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case "System.UInt32": return $"({getExp(operandExp)})::int4";
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case "System.UInt64": return $"({getExp(operandExp)})::int8";
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case "System.Guid": return $"({getExp(operandExp)})::bpchar(36)";
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}
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}
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break;
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case ExpressionType.ArrayLength:
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var arrOperExp = getExp((exp as UnaryExpression).Operand);
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if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
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return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
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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])})::text not in ('0','false','f','no'))";
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case "System.Byte": return $"({getExp(callExp.Arguments[0])})::int2";
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case "System.Char": return $"substr(({getExp(callExp.Arguments[0])})::char, 1, 1)";
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case "System.DateTime": return $"({getExp(callExp.Arguments[0])})::timestamp";
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case "System.Decimal": return $"({getExp(callExp.Arguments[0])})::numeric";
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case "System.Double": return $"({getExp(callExp.Arguments[0])})::float8";
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case "System.Int16": return $"({getExp(callExp.Arguments[0])})::int2";
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case "System.Int32": return $"({getExp(callExp.Arguments[0])})::int4";
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case "System.Int64": return $"({getExp(callExp.Arguments[0])})::int8";
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case "System.SByte": return $"({getExp(callExp.Arguments[0])})::int2";
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case "System.Single": return $"({getExp(callExp.Arguments[0])})::float4";
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case "System.UInt16": return $"({getExp(callExp.Arguments[0])})::int2";
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case "System.UInt32": return $"({getExp(callExp.Arguments[0])})::int4";
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case "System.UInt64": return $"({getExp(callExp.Arguments[0])})::int8";
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case "System.Guid": return $"({getExp(callExp.Arguments[0])})::bpchar(36)";
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}
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break;
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case "NewGuid":
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return null;
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case "Next":
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if (callExp.Object?.Type == typeof(Random)) return "(random()*1000000000)::int8";
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return null;
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case "NextDouble":
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if (callExp.Object?.Type == typeof(Random)) return "random()";
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return null;
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case "Random":
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if (callExp.Method.DeclaringType.IsNumberType()) return "random()";
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return null;
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case "ToString":
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if (callExp.Object != null) return callExp.Arguments.Count == 0 ? $"({getExp(callExp.Object)})::text" : null;
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return null;
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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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string left = null;
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switch (callExp.Method.Name)
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{
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case "Any":
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left = objExp == null ? null : getExp(objExp);
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if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
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return $"(case when {left} is null then 0 else array_length({left},1) end > 0)";
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case "Contains":
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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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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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//判断 in 或 array @> array
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if (left.StartsWith("array[") || left.EndsWith("]"))
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return $"({args1}) in ({left.Substring(6, left.Length - 7)})";
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if (left.StartsWith("(") || left.EndsWith(")")) //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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if (args1.StartsWith("(") || args1.EndsWith(")")) args1 = $"array[{args1.TrimStart('(').TrimEnd(')')}]";
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args1 = $"array[{args1}]";
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if (objExp != null)
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{
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var dbinfo = _common._orm.CodeFirst.GetDbInfo(objExp.Type);
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if (dbinfo != null) args1 = $"{args1}::{dbinfo.dbtype}";
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}
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return $"({left} @> {args1})";
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case "Concat":
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left = objExp == null ? null : getExp(objExp);
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if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
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var right2 = getExp(callExp.Arguments[argIndex]);
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if (right2.StartsWith("(") || right2.EndsWith(")")) right2 = $"array[{right2.TrimStart('(').TrimEnd(')')}]";
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return $"({left} || {right2})";
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case "GetLength":
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case "GetLongLength":
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case "Length":
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case "Count":
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left = objExp == null ? null : getExp(objExp);
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if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
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return $"case when {left} is null then 0 else array_length({left},1) end";
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}
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}
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break;
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case ExpressionType.MemberAccess:
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var memExp = exp as MemberExpression;
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var memParentExp = memExp.Expression?.Type;
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if (memParentExp?.FullName == "System.Byte[]") return null;
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if (memParentExp != null)
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{
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if (memParentExp.IsArray == true)
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{
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var left = getExp(memExp.Expression);
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if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]";
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switch (memExp.Member.Name)
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{
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case "Length":
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case "Count": return $"case when {left} is null then 0 else array_length({left},1) end";
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}
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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("array[");
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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 $"char_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_trunc('D',current_date)";
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case "MinValue": return "'0001/1/1 0:00:00'::timestamp";
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case "MaxValue": return "'9999/12/31 23:59:59'::timestamp";
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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_trunc('D',{left})";
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case "TimeOfDay": return $"datediff('second',date_trunc('D',{left}),{left})";
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case "DayOfWeek": return $"(dayofweek({left})-1)";
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case "Day": return $"dayofmonth({left})";
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case "DayOfYear": return $"dayofyear({left})";
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case "Month": return $"month({left})";
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case "Year": return $"year({left})";
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case "Hour": return $"hour({left})";
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case "Minute": return $"minute({left})";
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case "Second": return $"second({left})";
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case "Millisecond": return $"(datepart(millisecond,{left})-datepart(second,{left})*1000)";
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case "Ticks": return $"(datediff('second','1970-1-1',{left})::int8*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 "-922337203685477580"; //微秒 Ticks / 10
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case "MaxValue": return "922337203685477580";
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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 $"(({left})::int8*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 $"(({left})::int8*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 $"(({left})::int8*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 $"({arg2} is null or {arg2} = '' or ltrim({arg2}) = '')";
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case "Concat":
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return _common.StringConcat(exp.Arguments.Select(a => getExp(a)).ToArray(), null);
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case "Format":
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if (exp.Arguments[0].NodeType != ExpressionType.Constant) throw new Exception($"未实现函数表达式 {exp} 解析，参数 {exp.Arguments[0]} 必须为常量");
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var expArgs = exp.Arguments.Where((a, z) => z > 0).Select(a => $"'||{_common.IsNull(ExpressionLambdaToSql(a, tsc), "''")}||'").ToArray();
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return string.Format(ExpressionLambdaToSql(exp.Arguments[0], tsc), expArgs);
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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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var likeOpt = "LIKE";
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if (exp.Arguments.Count > 1)
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{
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if (exp.Arguments[1].Type == typeof(bool) ||
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exp.Arguments[1].Type == typeof(StringComparison)) likeOpt = "ILIKE";
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}
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if (exp.Method.Name == "StartsWith") return $"({left}) {likeOpt} {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"(({args0Value})::text || '%')")}";
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if (exp.Method.Name == "EndsWith") return $"({left}) {likeOpt} {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"('%' || ({args0Value})::text)")}";
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if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) {likeOpt} {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}";
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return $"({left}) {likeOpt} ('%' || ({args0Value})::text || '%')";
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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": return $"(strpos({left}, {getExp(exp.Arguments[0])})-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])})::text)";
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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])})";
|
||
case "Exp": return $"exp({getExp(exp.Arguments[0])})";
|
||
case "Log": return $"log({getExp(exp.Arguments[0])})";
|
||
case "Log10": return $"log10({getExp(exp.Arguments[0])})";
|
||
case "Pow": return $"pow({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
|
||
case "Sqrt": return $"sqrt({getExp(exp.Arguments[0])})";
|
||
case "Cos": return $"cos({getExp(exp.Arguments[0])})";
|
||
case "Sin": return $"sin({getExp(exp.Arguments[0])})";
|
||
case "Tan": return $"tan({getExp(exp.Arguments[0])})";
|
||
case "Acos": return $"acos({getExp(exp.Arguments[0])})";
|
||
case "Asin": return $"asin({getExp(exp.Arguments[0])})";
|
||
case "Atan": return $"atan({getExp(exp.Arguments[0])})";
|
||
case "Atan2": return $"atan2({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
|
||
case "Truncate": return $"trunc({getExp(exp.Arguments[0])}, 0)";
|
||
}
|
||
return null;
|
||
}
|
||
public override string ExpressionLambdaToSqlCallDateTime(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 "DaysInMonth": return $"dayofmonth(dateadd('day',-1,dateadd('month',1,({getExp(exp.Arguments[0])})::text||'-'||({getExp(exp.Arguments[1])})::text||'-1')))";
|
||
case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})";
|
||
|
||
case "IsLeapYear":
|
||
var isLeapYearArgs1 = getExp(exp.Arguments[0]);
|
||
return $"(({isLeapYearArgs1})%4=0 AND ({isLeapYearArgs1})%100<>0 OR ({isLeapYearArgs1})%400=0)";
|
||
|
||
case "Parse": return $"({getExp(exp.Arguments[0])})::timestamp";
|
||
case "ParseExact":
|
||
case "TryParse":
|
||
case "TryParseExact": return $"({getExp(exp.Arguments[0])})::timestamp";
|
||
}
|
||
}
|
||
else
|
||
{
|
||
var left = getExp(exp.Object);
|
||
var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]);
|
||
switch (exp.Method.Name)
|
||
{
|
||
case "Add": return $"dateadd('second',{args1},{left})";
|
||
case "AddDays": return $"dateadd('day',{args1},{left})";
|
||
case "AddHours": return $"dateadd('hour',{args1},{left})";
|
||
case "AddMilliseconds": return $"dateadd('second',({args1})/1000,{left})";
|
||
case "AddMinutes": return $"dateadd('minute',{args1},{left})";
|
||
case "AddMonths": return $"dateadd('month',{args1},{left})";
|
||
case "AddSeconds": return $"dateadd('second', {args1}, {left})";
|
||
case "AddTicks": return $"dateadd('second',({args1})/10000000,{left})";
|
||
case "AddYears": return $"dateadd('year',{args1},{left})";
|
||
case "Subtract":
|
||
switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GetGenericArguments().FirstOrDefault() : exp.Arguments[0].Type).FullName)
|
||
{
|
||
case "System.DateTime": return $"datediff('second',{args1},{left})";
|
||
case "System.TimeSpan": return $"dateadd('second',({args1})*-1,{left})";
|
||
}
|
||
break;
|
||
case "Equals": return $"({left} = {args1})";
|
||
case "CompareTo": return $"datediff('second',{args1},{left})";
|
||
case "ToString":
|
||
if (left.EndsWith("::timestamp") == false) left = $"({left})::timestamp";
|
||
if (exp.Arguments.Count == 0) return $"to_char({left},'YYYY-MM-DD HH24:MI:SS.US')";
|
||
switch (args1)
|
||
{
|
||
case "'yyyy-MM-dd HH:mm:ss'": return $"to_char({left},'YYYY-MM-DD HH24:MI:SS')";
|
||
case "'yyyy-MM-dd HH:mm'": return $"to_char({left},'YYYY-MM-DD HH24:MI')";
|
||
case "'yyyy-MM-dd HH'": return $"to_char({left},'YYYY-MM-DD HH24')";
|
||
case "'yyyy-MM-dd'": return $"to_char({left},'YYYY-MM-DD')";
|
||
case "'yyyy-MM'": return $"to_char({left},'YYYY-MM')";
|
||
case "'yyyyMMddHHmmss'": return $"to_char({left},'YYYYMMDDHH24MISS')";
|
||
case "'yyyyMMddHHmm'": return $"to_char({left},'YYYYMMDDHH24MI')";
|
||
case "'yyyyMMddHH'": return $"to_char({left},'YYYYMMDDHH24')";
|
||
case "'yyyyMMdd'": return $"to_char({left},'YYYYMMDD')";
|
||
case "'yyyyMM'": return $"to_char({left},'YYYYMM')";
|
||
case "'yyyy'": return $"to_char({left},'YYYY')";
|
||
case "'HH:mm:ss'": return $"to_char({left},'HH24:MI:SS')";
|
||
}
|
||
args1 = Regex.Replace(args1, "(yyyy|yy|MM|dd|HH|hh|mm|ss|tt)", m =>
|
||
{
|
||
switch (m.Groups[1].Value)
|
||
{
|
||
case "yyyy": return $"YYYY";
|
||
case "yy": return $"YY";
|
||
case "MM": return $"%_a1";
|
||
case "dd": return $"%_a2";
|
||
case "HH": return $"%_a3";
|
||
case "hh": return $"%_a4";
|
||
case "mm": return $"%_a5";
|
||
case "ss": return $"SS";
|
||
case "tt": return $"%_a6";
|
||
}
|
||
return m.Groups[0].Value;
|
||
});
|
||
var argsFinds = new[] { "YYYY", "YY", "%_a1", "%_a2", "%_a3", "%_a4", "%_a5", "SS", "%_a6" };
|
||
var argsSpts = Regex.Split(args1, "(M|d|H|h|m|s|t)");
|
||
for (var a = 0; a < argsSpts.Length; a++)
|
||
{
|
||
switch (argsSpts[a])
|
||
{
|
||
case "M": argsSpts[a] = $"ltrim(to_char({left},'MM'),'0')"; break;
|
||
case "d": argsSpts[a] = $"case when substr(to_char({left},'DD'),1,1) = '0' then substr(to_char({left},'DD'),2,1) else to_char({left},'DD') end"; break;
|
||
case "H": argsSpts[a] = $"case when substr(to_char({left},'HH24'),1,1) = '0' then substr(to_char({left},'HH24'),2,1) else to_char({left},'HH24') end"; break;
|
||
case "h": argsSpts[a] = $"case when substr(to_char({left},'HH12'),1,1) = '0' then substr(to_char({left},'HH12'),2,1) else to_char({left},'HH12') end"; break;
|
||
case "m": argsSpts[a] = $"case when substr(to_char({left},'MI'),1,1) = '0' then substr(to_char({left},'MI'),2,1) else to_char({left},'MI') end"; break;
|
||
case "s": argsSpts[a] = $"case when substr(to_char({left},'SS'),1,1) = '0' then substr(to_char({left},'SS'),2,1) else to_char({left},'SS') end"; break;
|
||
case "t": argsSpts[a] = $"rtrim(to_char({left},'AM'),'M')"; break;
|
||
default:
|
||
var argsSptsA = argsSpts[a];
|
||
if (argsSptsA.StartsWith("'")) argsSptsA = argsSptsA.Substring(1);
|
||
if (argsSptsA.EndsWith("'")) argsSptsA = argsSptsA.Remove(argsSptsA.Length - 1);
|
||
argsSpts[a] = argsFinds.Any(m => argsSptsA.Contains(m)) ? $"to_char({left},'{argsSptsA}')" : $"'{argsSptsA}'";
|
||
break;
|
||
}
|
||
}
|
||
if (argsSpts.Length > 0) args1 = $"({string.Join(" || ", argsSpts.Where(a => a != "''"))})";
|
||
return args1.Replace("%_a1", "MM").Replace("%_a2", "DD").Replace("%_a3", "HH24").Replace("%_a4", "HH12").Replace("%_a5", "MI").Replace("%_a6", "AM");
|
||
}
|
||
}
|
||
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 $"({getExp(exp.Arguments[0])})::int8";
|
||
case "ParseExact":
|
||
case "TryParse":
|
||
case "TryParseExact": return $"({getExp(exp.Arguments[0])})::int8";
|
||
}
|
||
}
|
||
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 $"({left})::text";
|
||
}
|
||
}
|
||
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])})::text not in ('0','false','f','no'))";
|
||
case "ToByte": return $"({getExp(exp.Arguments[0])})::int2";
|
||
case "ToChar": return $"substr(({getExp(exp.Arguments[0])})::char, 1, 1)";
|
||
case "ToDateTime": return $"({getExp(exp.Arguments[0])})::timestamp";
|
||
case "ToDecimal": return $"({getExp(exp.Arguments[0])})::numeric";
|
||
case "ToDouble": return $"({getExp(exp.Arguments[0])})::float8";
|
||
case "ToInt16": return $"({getExp(exp.Arguments[0])})::int2";
|
||
case "ToInt32": return $"({getExp(exp.Arguments[0])})::int4";
|
||
case "ToInt64": return $"({getExp(exp.Arguments[0])})::int8";
|
||
case "ToSByte": return $"({getExp(exp.Arguments[0])})::int2";
|
||
case "ToSingle": return $"({getExp(exp.Arguments[0])})::float4";
|
||
case "ToString": return $"({getExp(exp.Arguments[0])})::text";
|
||
case "ToUInt16": return $"({getExp(exp.Arguments[0])})::int2";
|
||
case "ToUInt32": return $"({getExp(exp.Arguments[0])})::int4";
|
||
case "ToUInt64": return $"({getExp(exp.Arguments[0])})::int8";
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
}
|
||
}
|