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- 增加 Firebird DateTime ToString yyyyMMdd 表达式解析 #443；

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This commit is contained in:
28810
2020-09-13 01:00:57 +08:00
parent 9d692c5c25
commit 7e2903df22
5 changed files with 219 additions and 121 deletions
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45
Providers/FreeSql.Provider.Firebird/FirebirdExpression.cs
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@ -1,11 +1,10 @@
using FreeSql.Internal;
using FreeSql.Internal.Model;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Text.RegularExpressions;
namespace FreeSql.Firebird
{
@ -41,7 +40,7 @@ namespace FreeSql.Firebird
case "System.UInt16": return $"cast({getExp(operandExp)} as integer)";
case "System.UInt32": return $"cast({getExp(operandExp)} as bigint)";
case "System.UInt64": return $"cast({getExp(operandExp)} as decimal(21,0))";
case "System.Guid": return $"substring(cast({getExp(operandExp)} as char) from 1 for 36)";
case "System.Guid": return $"substring(cast({getExp(operandExp)} as char(36)) from 1 for 36)";
}
}
break;
@ -69,7 +68,7 @@ namespace FreeSql.Firebird
case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as integer)";
case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as bigint)";
case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as decimal(18,0))";
case "System.Guid": return $"substring(cast({getExp(callExp.Arguments[0])} as char) from 1 for 36)";
case "System.Guid": return $"substring(cast({getExp(callExp.Arguments[0])} as char(36)) from 1 for 36)";
}
return null;
case "NewGuid":
@ -84,7 +83,7 @@ namespace FreeSql.Firebird
if (callExp.Method.DeclaringType.IsNumberType()) return "rand()";
return null;
case "ToString":
if (callExp.Object != null) return callExp.Arguments.Count == 0 ? $"cast({getExp(callExp.Object)} as char)" : null;
if (callExp.Object != null) return callExp.Arguments.Count == 0 ? $"cast({getExp(callExp.Object)} as blob sub_type 1)" : null;
return null;
}
@ -401,7 +400,41 @@ namespace FreeSql.Firebird
break;
case "Equals": return $"({left} = {args1})";
case "CompareTo": return $"datediff(second from {left} to {args1})";
case "ToString": return exp.Arguments.Count == 0 ? $"cast({left} as varchar(50))" : null;
case "ToString":
if (left.EndsWith(" as timestamp)") == false && left.StartsWith("timestamp") == false) left = $"cast({left} as timestamp)";
if (exp.Arguments.Count == 0) return $"lpad(extract(year from {left}),4,'0')||'-'||lpad(extract(month from {left}),2,'0')||'-'||lpad(extract(day from {left}),2,'0')||' '||lpad(extract(hour from {left}),2,'0')||':'||lpad(extract(minute from {left}),2,'0')||':'||lpad(trunc(extract(second from {left})),2,'0')";
switch (args1.TrimStart('N'))
{
case "'yyyyMMdd'": return $"lpad(extract(year from {left}),4,'0')||lpad(extract(month from {left}),2,'0')||lpad(extract(day from {left}),2,'0')";
case "'yyyyMM'": return $"lpad(extract(year from {left}),4,'0')||lpad(extract(month from {left}),2,'0')";
case "'yyyy'": return $"lpad(extract(year from {left}),4,'0')";
}
var isMatched = false;
args1 = Regex.Replace(args1, "(yyyy|yy|MM|M|dd|d|HH|H|hh|h|mm|m|ss|s|tt|t)", m =>
{
isMatched = true;
switch (m.Groups[1].Value)
{
case "yyyy": return $"'||lpad(extract(year from {left}),4,'0')||'";
case "yy": return $"'||substring(lpad(extract(year from {left}),4,'0') from 3 for 2)||'";
case "MM": return $"'||lpad(extract(month from {left}),2,'0')||'";
case "M": return $"'||extract(month from {left})||'";
case "dd": return $"'||lpad(extract(day from {left}),2,'0')||'";
case "d": return $"'||extract(day from {left})||'";
case "HH": return $"'||lpad(extract(hour from {left}),2,'0')||'";
case "H": return $"'||extract(hour from {left})||'";
case "hh": return $"'||case when mod(extract(hour from {left}),12) = 0 then '12' else lpad(mod(extract(hour from {left}),12),2,'0') end||'";
case "h": return $"'||trim(case when mod(extract(hour from {left}),12) = 0 then '12' else mod(extract(hour from {left}),12) end)||'";
case "mm": return $"'||lpad(extract(minute from {left}),2,'0')||'";
case "m": return $"'||extract(minute from {left})||'";
case "ss": return $"'||lpad(trunc(extract(second from {left})),2,'0')||'";
case "s": return $"'||trunc(extract(second from {left}))||'";
case "tt": return $"'||case when extract(hour from {left}) >= 12 then 'PM' else 'AM' end||'";
case "t": return $"'||case when extract(hour from {left}) >= 12 then 'P' else 'A' end||'";
}
return m.Groups[0].Value;
});
return isMatched == false ? args1 : $"({args1})";
}
}
return null;