mirror of
https://github.com/nsnail/FreeSql.git
synced 2025-11-04 17:20:49 +08:00
647 lines
40 KiB
C#
647 lines
40 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.KingbaseES
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{
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class KingbaseESExpression : CommonExpression
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{
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public KingbaseESExpression(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.ArrayLength:
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var arrOper = (exp as UnaryExpression)?.Operand;
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var arrOperExp = getExp(arrOper);
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if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
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if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
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return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
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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)})::varchar 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 ExpressionConstDateTime(operandExp) ?? $"({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)})::uuid";
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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])})::varchar 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 ExpressionConstDateTime(callExp.Arguments[0]) ?? $"({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])})::uuid";
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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)::int4";
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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)
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{
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if (callExp.Object.Type.NullableTypeOrThis().IsEnum)
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{
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tsc.SetMapColumnTmp(null);
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var oldMapType = tsc.SetMapTypeReturnOld(typeof(string));
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var enumStr = ExpressionLambdaToSql(callExp.Object, tsc);
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tsc.SetMapColumnTmp(null).SetMapTypeReturnOld(oldMapType);
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return enumStr;
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}
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return callExp.Arguments.Count == 0 ? $"({getExp(callExp.Object)})::text" : null;
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}
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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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if (objType == typeof(string))
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{
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switch (callExp.Method.Name)
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{
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case "First":
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case "FirstOrDefault":
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return $"substr({getExp(callExp.Arguments[0])}, 1, 1)";
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}
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}
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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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if (objType == typeof(Dictionary<string, string>))
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{
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left = objExp == null ? null : getExp(objExp);
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switch (callExp.Method.Name)
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{
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case "get_Item": return $"{left}->{getExp(callExp.Arguments[argIndex])}";
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case "Contains":
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var right = getExp(callExp.Arguments[argIndex]);
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return $"({left} @> ({right}))";
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case "ContainsKey": return $"({left} ? {getExp(callExp.Arguments[argIndex])})";
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case "Concat": return $"({left} || {getExp(callExp.Arguments[argIndex])})";
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case "GetLength":
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case "GetLongLength":
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case "Count": return $"case when {left} is null then 0 else array_length(akeys({left}),1) end";
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case "Keys": return $"akeys({left})";
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case "Values": return $"avals({left})";
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}
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}
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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 = objExp?.NodeType == ExpressionType.MemberAccess ? tsc.SetDbParamsReturnOld(null) : null; //#900 UseGenerateCommandParameterWithLambda(true) 子查询 bug、以及 #1173 参数化 bug
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tsc.isNotSetMapColumnTmp = true;
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left = objExp == null ? null : getExp(objExp);
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tsc.isNotSetMapColumnTmp = false;
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tsc.SetMapColumnTmp(null).SetMapTypeReturnOld(oldMapType);
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if (oldDbParams != null) 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 "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 $"({left})::date";
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case "TimeOfDay": return $"(extract(epoch from ({left})::time)*1000000)";
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case "DayOfWeek": return $"extract(dow from ({left})::timestamp)";
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case "Day": return $"extract(day from ({left})::timestamp)";
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case "DayOfYear": return $"extract(doy from ({left})::timestamp)";
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case "Month": return $"extract(month from ({left})::timestamp)";
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case "Year": return $"extract(year from ({left})::timestamp)";
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case "Hour": return $"extract(hour from ({left})::timestamp)";
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case "Minute": return $"extract(minute from ({left})::timestamp)";
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case "Second": return $"extract(second from ({left})::timestamp)";
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case "Millisecond": return $"(extract(milliseconds from ({left})::timestamp)-extract(second from ({left})::timestamp)*1000)";
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case "Ticks": return $"(extract(epoch from ({left})::timestamp)*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})/{(long)1000000 * 60 * 60 * 24})";
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case "Hours": return $"floor(({left})/{(long)1000000 * 60 * 60}%24)";
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case "Milliseconds": return $"(floor(({left})/1000)::int8%1000)";
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case "Minutes": return $"(floor(({left})/{(long)1000000 * 60})::int8%60)";
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case "Seconds": return $"(floor(({left})/1000000)::int8%60)";
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case "Ticks": return $"(({left})*10)";
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case "TotalDays": return $"(({left})/{(long)1000000 * 60 * 60 * 24})";
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case "TotalHours": return $"(({left})/{(long)1000000 * 60 * 60})";
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case "TotalMilliseconds": return $"(({left})/1000)";
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case "TotalMinutes": return $"(({left})/{(long)1000000 * 60})";
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case "TotalSeconds": return $"(({left})/1000000)";
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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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if (exp.Arguments.Count == 1 && exp.Arguments[0].NodeType == ExpressionType.NewArrayInit && exp.Arguments[0] is NewArrayExpression concatNewArrExp)
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return _common.StringConcat(concatNewArrExp.Expressions.Select(a => getExp(a)).ToArray(), null);
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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(CoreStrings.Not_Implemented_Expression_ParameterUseConstant(exp,exp.Arguments[0]));
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var expArgsHack = exp.Arguments.Count == 2 && exp.Arguments[1].NodeType == ExpressionType.NewArrayInit ?
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(exp.Arguments[1] as NewArrayExpression).Expressions : exp.Arguments.Where((a, z) => z > 0);
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//3个 {} 时，Arguments 解析出来是分开的
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//4个 {} 时，Arguments[1] 只能解析这个出来，然后里面是 NewArray []
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var expArgs = expArgsHack.Select(a =>
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{
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var atype = (a as UnaryExpression)?.Operand.Type.NullableTypeOrThis() ?? a.Type.NullableTypeOrThis();
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if (atype == typeof(string)) return $"'||{_common.IsNull(ExpressionLambdaToSql(a, tsc), "''")}||'";
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return $"'||{_common.IsNull($"({ExpressionLambdaToSql(a, tsc)})::text", "''")}||'";
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}).ToArray();
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return string.Format(ExpressionLambdaToSql(exp.Arguments[0], tsc), expArgs);
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case "Join":
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if (exp.IsStringJoin(out var tolistObjectExp, out var toListMethod, out var toListArgs1))
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{
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var newToListArgs0 = Expression.Call(tolistObjectExp, toListMethod,
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Expression.Lambda(
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Expression.Call(
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typeof(SqlExtExtensions).GetMethod("StringJoinPgsqlGroupConcat"),
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Expression.Convert(toListArgs1.Body, typeof(object)),
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Expression.Convert(exp.Arguments[0], typeof(object))),
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toListArgs1.Parameters));
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var newToListSql = getExp(newToListArgs0);
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return newToListSql;
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}
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break;
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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 (args0Value.Contains("%"))
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{
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if (exp.Method.Name == "StartsWith") return $"strpos({args0Value}, {left}) = 1";
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if (exp.Method.Name == "EndsWith") return $"strpos({args0Value}, {left}) = char_length({args0Value})";
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return $"strpos({args0Value}, {left}) > 0";
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}
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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 || '%')")}";
|
||
if (exp.Method.Name == "EndsWith") return $"({left}) {likeOpt} {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"('%' || ({args0Value})::text)")}";
|
||
if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) {likeOpt} {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}";
|
||
return $"({left}) {likeOpt} ('%' || ({args0Value})::text || '%')";
|
||
case "ToLower": return $"lower({left})";
|
||
case "ToUpper": return $"upper({left})";
|
||
case "Substring":
|
||
var substrArgs1 = getExp(exp.Arguments[0]);
|
||
if (long.TryParse(substrArgs1, out var testtrylng1)) substrArgs1 = (testtrylng1 + 1).ToString();
|
||
else substrArgs1 += "+1";
|
||
if (exp.Arguments.Count == 1) return $"substr({left}, {substrArgs1})";
|
||
return $"substr({left}, {substrArgs1}, {getExp(exp.Arguments[1])})";
|
||
case "IndexOf": return $"(strpos({left}, {getExp(exp.Arguments[0])})-1)";
|
||
case "PadLeft":
|
||
if (exp.Arguments.Count == 1) return $"lpad({left}, {getExp(exp.Arguments[0])})";
|
||
return $"lpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
|
||
case "PadRight":
|
||
if (exp.Arguments.Count == 1) return $"rpad({left}, {getExp(exp.Arguments[0])})";
|
||
return $"rpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
|
||
case "Trim":
|
||
case "TrimStart":
|
||
case "TrimEnd":
|
||
if (exp.Arguments.Count == 0)
|
||
{
|
||
if (exp.Method.Name == "Trim") return $"trim({left})";
|
||
if (exp.Method.Name == "TrimStart") return $"ltrim({left})";
|
||
if (exp.Method.Name == "TrimEnd") return $"rtrim({left})";
|
||
}
|
||
foreach (var argsTrim02 in exp.Arguments)
|
||
{
|
||
var argsTrim01s = new[] { argsTrim02 };
|
||
if (argsTrim02.NodeType == ExpressionType.NewArrayInit)
|
||
{
|
||
var arritem = argsTrim02 as NewArrayExpression;
|
||
argsTrim01s = arritem.Expressions.ToArray();
|
||
}
|
||
foreach (var argsTrim01 in argsTrim01s)
|
||
{
|
||
if (exp.Method.Name == "Trim") left = $"trim(both {getExp(argsTrim01)} from {left})";
|
||
if (exp.Method.Name == "TrimStart") left = $"ltrim({left},{getExp(argsTrim01)})";
|
||
if (exp.Method.Name == "TrimEnd") left = $"rtrim({left},{getExp(argsTrim01)})";
|
||
}
|
||
}
|
||
return left;
|
||
case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
|
||
case "CompareTo": return $"case when {left} = {getExp(exp.Arguments[0])} then 0 when {left} > {getExp(exp.Arguments[0])} then 1 else -1 end";
|
||
case "Equals": return $"({left} = ({getExp(exp.Arguments[0])})::text)";
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
public override string ExpressionLambdaToSqlCallMath(MethodCallExpression exp, ExpTSC tsc)
|
||
{
|
||
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
|
||
switch (exp.Method.Name)
|
||
{
|
||
case "Abs": return $"abs({getExp(exp.Arguments[0])})";
|
||
case "Sign": return $"sign({getExp(exp.Arguments[0])})";
|
||
case "Floor": return $"floor({getExp(exp.Arguments[0])})";
|
||
case "Ceiling": return $"ceiling({getExp(exp.Arguments[0])})";
|
||
case "Round":
|
||
if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") return $"round({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
|
||
return $"round({getExp(exp.Arguments[0])})";
|
||
case "Exp": return $"exp({getExp(exp.Arguments[0])})";
|
||
case "Log":
|
||
if (exp.Arguments.Count > 1) return $"log({getExp(exp.Arguments[1])},{getExp(exp.Arguments[0])})";
|
||
return $"log(2.7182818284590451,{getExp(exp.Arguments[0])})";
|
||
case "Log10": return $"log({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 $"extract(epoch from ({getExp(exp.Arguments[0])})::timestamp-({getExp(exp.Arguments[1])})::timestamp)";
|
||
case "DaysInMonth": return $"extract(day from ({getExp(exp.Arguments[0])} || '-' || {getExp(exp.Arguments[1])} || '-01')::timestamp+'1 month'::interval-'1 day'::interval)";
|
||
case "Equals": return $"(({getExp(exp.Arguments[0])})::timestamp = ({getExp(exp.Arguments[1])})::timestamp)";
|
||
|
||
case "IsLeapYear":
|
||
var isLeapYearArgs1 = getExp(exp.Arguments[0]);
|
||
return $"(({isLeapYearArgs1})::int8%4=0 AND ({isLeapYearArgs1})::int8%100<>0 OR ({isLeapYearArgs1})::int8%400=0)";
|
||
|
||
case "Parse": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"({getExp(exp.Arguments[0])})::timestamp";
|
||
case "ParseExact":
|
||
case "TryParse":
|
||
case "TryParseExact": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"({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 $"(({left})::timestamp+((({args1})/1000)||' milliseconds')::interval)";
|
||
case "AddDays": return $"(({left})::timestamp+(({args1})||' day')::interval)";
|
||
case "AddHours": return $"(({left})::timestamp+(({args1})||' hour')::interval)";
|
||
case "AddMilliseconds": return $"(({left})::timestamp+(({args1})||' milliseconds')::interval)";
|
||
case "AddMinutes": return $"(({left})::timestamp+(({args1})||' minute')::interval)";
|
||
case "AddMonths": return $"(({left})::timestamp+(({args1})||' month')::interval)";
|
||
case "AddSeconds": return $"(({left})::timestamp+(({args1})||' second')::interval)";
|
||
case "AddTicks": return $"(({left})::timestamp+(({args1})/10||' microseconds')::interval)";
|
||
case "AddYears": return $"(({left})::timestamp+(({args1})||' year')::interval)";
|
||
case "Subtract":
|
||
switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GetGenericArguments().FirstOrDefault() : exp.Arguments[0].Type).FullName)
|
||
{
|
||
case "System.DateTime": return $"(extract(epoch from ({left})::timestamp-({args1})::timestamp)*1000000)";
|
||
case "System.TimeSpan": return $"(({left})::timestamp-((({args1})/1000)||' milliseconds')::interval)";
|
||
}
|
||
break;
|
||
case "Equals": return $"({left} = ({args1})::timestamp)";
|
||
case "CompareTo": return $"extract(epoch from ({left})::timestamp-({args1})::timestamp)";
|
||
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])})*{(long)1000000 * 60 * 60 * 24})";
|
||
case "FromHours": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60 * 60})";
|
||
case "FromMilliseconds": return $"(({getExp(exp.Arguments[0])})*1000)";
|
||
case "FromMinutes": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60})";
|
||
case "FromSeconds": return $"(({getExp(exp.Arguments[0])})*1000000)";
|
||
case "FromTicks": return $"(({getExp(exp.Arguments[0])})/10)";
|
||
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})::varchar";
|
||
}
|
||
}
|
||
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])})::varchar 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 ExpressionConstDateTime(exp.Arguments[0]) ?? $"({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;
|
||
}
|
||
}
|
||
}
|