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Added Convert.ToDateTime as a supported method for translation #1297 #1298

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Added Convert.ToDateTime as a supported method for translation #1297 #1298

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b0a8a80
Added Convert.ToDateTime as a supported method for translation #1297
TanielianVB Mar 4, 2020
42b2843
Merge branch 'dev' of https://github.com/npgsql/efcore.pg into dev
TanielianVB Mar 20, 2020
f6170df
Merge remote-tracking branch 'upstream/dev' into dev
TanielianVB Sep 4, 2020
6baa90f
Resolved changes requested during review
TanielianVB Sep 4, 2020
dba3629
Improved Convert.ToDateTime test
TanielianVB Sep 4, 2020
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18 changes: 10 additions & 8 deletions src/EFCore.PG/Query/ExpressionTranslators/Internal/NpgsqlConvertTranslator.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,20 +17,22 @@ public class NpgsqlConvertTranslator : IMethodCallTranslator
{
static readonly Dictionary<string, string> TypeMapping = new Dictionary<string, string>
{
[nameof(Convert.ToBoolean)] = "bool",
[nameof(Convert.ToByte)] = "smallint",
[nameof(Convert.ToDecimal)] = "numeric",
[nameof(Convert.ToDouble)] = "double precision",
[nameof(Convert.ToInt16)] = "smallint",
[nameof(Convert.ToInt32)] = "int",
[nameof(Convert.ToInt64)] = "bigint",
[nameof(Convert.ToString)] = "text"
[nameof(Convert.ToBoolean)] = "bool",
[nameof(Convert.ToByte)] = "smallint",
[nameof(Convert.ToDateTime)] = "timestamp with time zone",
[nameof(Convert.ToDecimal)] = "numeric",
[nameof(Convert.ToDouble)] = "double precision",
[nameof(Convert.ToInt16)] = "smallint",
[nameof(Convert.ToInt32)] = "int",
[nameof(Convert.ToInt64)] = "bigint",
[nameof(Convert.ToString)] = "text"
};

static readonly List<Type> SupportedTypes = new List<Type>
{
typeof(bool),
typeof(byte),
typeof(DateTime),
typeof(decimal),
typeof(double),
typeof(float),
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14 changes: 13 additions & 1 deletion test/EFCore.PG.FunctionalTests/Query/NorthwindFunctionsQueryNpgsqlTest.cs
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@@ -1,4 +1,4 @@
using System;
using System;
using System.Linq;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
Expand Down Expand Up @@ -41,6 +41,18 @@ public override Task Where_math_log_new_base(bool async)
public override Task Convert_ToString(bool async)
=> base.Convert_ToString(async);

[ConditionalTheory]
[MemberData(nameof(IsAsyncData))]
public virtual async Task Convert_ToDateTime(bool async)
{
await AssertQuery(
async,
ss => ss.Set<Order>().Where(o => o.OrderDate.HasValue && o.OrderDate == Convert.ToDateTime(o.OrderDate.ToString())),
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entryCount: 830);

AssertContainsSqlFragment(@"WHERE (o.""OrderDate"" IS NOT NULL) AND (o.""OrderDate"" = CAST(CAST(o.""OrderDate"" AS text) AS timestamp without time zone))");
}

#region Substring

[ConditionalTheory]
Expand Down