Cosmos: Add translator for Regex.IsMatch method

src/EFCore.Cosmos/Query/Internal/ContainsTranslator.cs → src/EFCore.Cosmos/Query/Internal/CosmosContainsTranslator.cs

@@ -9,7 +9,7 @@ namespace Microsoft.EntityFrameworkCore.Cosmos.Query.Internal;
 ///     any release. You should only use it directly in your code with extreme caution and knowing that
 ///     doing so can result in application failures when updating to a new Entity Framework Core release.
 /// </summary>
-public class ContainsTranslator : IMethodCallTranslator
+public class CosmosContainsTranslator : IMethodCallTranslator
 {
     private readonly ISqlExpressionFactory _sqlExpressionFactory;
 
@@ -19,7 +19,7 @@ public class ContainsTranslator : IMethodCallTranslator
     ///     any release. You should only use it directly in your code with extreme caution and knowing that
     ///     doing so can result in application failures when updating to a new Entity Framework Core release.
     /// </summary>
-    public ContainsTranslator(ISqlExpressionFactory sqlExpressionFactory)
+    public CosmosContainsTranslator(ISqlExpressionFactory sqlExpressionFactory)
     {
         _sqlExpressionFactory = sqlExpressionFactory;
     }

src/EFCore.Cosmos/Query/Internal/EqualsTranslator.cs → src/EFCore.Cosmos/Query/Internal/CosmosEqualsTranslator.cs

@@ -9,7 +9,7 @@ namespace Microsoft.EntityFrameworkCore.Cosmos.Query.Internal;
 ///     any release. You should only use it directly in your code with extreme caution and knowing that
 ///     doing so can result in application failures when updating to a new Entity Framework Core release.
 /// </summary>
-public class EqualsTranslator : IMethodCallTranslator
+public class CosmosEqualsTranslator : IMethodCallTranslator
 {
     private readonly ISqlExpressionFactory _sqlExpressionFactory;
 
@@ -19,7 +19,7 @@ public class EqualsTranslator : IMethodCallTranslator
     ///     any release. You should only use it directly in your code with extreme caution and knowing that
     ///     doing so can result in application failures when updating to a new Entity Framework Core release.
     /// </summary>
-    public EqualsTranslator(ISqlExpressionFactory sqlExpressionFactory)
+    public CosmosEqualsTranslator(ISqlExpressionFactory sqlExpressionFactory)
     {
         _sqlExpressionFactory = sqlExpressionFactory;
     }

src/EFCore.Cosmos/Query/Internal/MathTranslator.cs → src/EFCore.Cosmos/Query/Internal/CosmosMathTranslator.cs

@@ -9,7 +9,7 @@ namespace Microsoft.EntityFrameworkCore.Cosmos.Query.Internal;
 ///     any release. You should only use it directly in your code with extreme caution and knowing that
 ///     doing so can result in application failures when updating to a new Entity Framework Core release.
 /// </summary>
-public class MathTranslator : IMethodCallTranslator
+public class CosmosMathTranslator : IMethodCallTranslator
 {
     private static readonly Dictionary<MethodInfo, string> SupportedMethodTranslations = new()
     {
@@ -77,7 +77,7 @@ public class MathTranslator : IMethodCallTranslator
     ///     any release. You should only use it directly in your code with extreme caution and knowing that
     ///     doing so can result in application failures when updating to a new Entity Framework Core release.
     /// </summary>
-    public MathTranslator(ISqlExpressionFactory sqlExpressionFactory)
+    public CosmosMathTranslator(ISqlExpressionFactory sqlExpressionFactory)
     {
         _sqlExpressionFactory = sqlExpressionFactory;
     }

src/EFCore.Cosmos/Query/Internal/CosmosMethodCallTranslatorProvider.cs

@@ -29,11 +29,12 @@ public CosmosMethodCallTranslatorProvider(
         _translators.AddRange(
             new IMethodCallTranslator[]
             {
-                new EqualsTranslator(sqlExpressionFactory),
+                new CosmosEqualsTranslator(sqlExpressionFactory),
                 new CosmosStringMethodTranslator(sqlExpressionFactory),
-                new ContainsTranslator(sqlExpressionFactory),
-                new RandomTranslator(sqlExpressionFactory),
-                new MathTranslator(sqlExpressionFactory)
+                new CosmosContainsTranslator(sqlExpressionFactory),
+                new CosmosRandomTranslator(sqlExpressionFactory),
+                new CosmosMathTranslator(sqlExpressionFactory),
+                new CosmosRegexTranslator(sqlExpressionFactory)
                 //new LikeTranslator(sqlExpressionFactory),
                 //new EnumHasFlagTranslator(sqlExpressionFactory),
                 //new GetValueOrDefaultTranslator(sqlExpressionFactory),

src/EFCore.Cosmos/Query/Internal/RandomTranslator.cs → src/EFCore.Cosmos/Query/Internal/CosmosRandomTranslator.cs

@@ -11,7 +11,7 @@ namespace Microsoft.EntityFrameworkCore.Cosmos.Query.Internal;
 ///     any release. You should only use it directly in your code with extreme caution and knowing that
 ///     doing so can result in application failures when updating to a new Entity Framework Core release.
 /// </summary>
-public class RandomTranslator : IMethodCallTranslator
+public class CosmosRandomTranslator : IMethodCallTranslator
 {
     private static readonly MethodInfo MethodInfo = typeof(DbFunctionsExtensions).GetRuntimeMethod(
         nameof(DbFunctionsExtensions.Random), new[] { typeof(DbFunctions) });
@@ -24,7 +24,7 @@ public class RandomTranslator : IMethodCallTranslator
     ///     any release. You should only use it directly in your code with extreme caution and knowing that
     ///     doing so can result in application failures when updating to a new Entity Framework Core release.
     /// </summary>
-    public RandomTranslator(ISqlExpressionFactory sqlExpressionFactory)
+    public CosmosRandomTranslator(ISqlExpressionFactory sqlExpressionFactory)
     {
         _sqlExpressionFactory = sqlExpressionFactory;
     }

src/EFCore.Cosmos/Query/Internal/CosmosRegexTranslator.cs

@@ -0,0 +1,102 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Text.RegularExpressions;
+
+namespace Microsoft.EntityFrameworkCore.Cosmos.Query.Internal;
+
+/// <summary>
+///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
+///     the same compatibility standards as public APIs. It may be changed or removed without notice in
+///     any release. You should only use it directly in your code with extreme caution and knowing that
+///     doing so can result in application failures when updating to a new Entity Framework Core release.
+/// </summary>
+public class CosmosRegexTranslator : IMethodCallTranslator
+{
+    private static readonly MethodInfo IsMatch =
+        typeof(Regex).GetRuntimeMethod(nameof(Regex.IsMatch), new[] { typeof(string), typeof(string) })!;
+
+    private static readonly MethodInfo IsMatchWithRegexOptions =
+        typeof(Regex).GetRuntimeMethod(nameof(Regex.IsMatch), new[] { typeof(string), typeof(string), typeof(RegexOptions) })!;
+
+    private const RegexOptions SupportedOptions = RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace;
+
+    private readonly ISqlExpressionFactory _sqlExpressionFactory;
+
+    /// <summary>
+    ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
+    ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
+    ///     any release. You should only use it directly in your code with extreme caution and knowing that
+    ///     doing so can result in application failures when updating to a new Entity Framework Core release.
+    /// </summary>
+    public CosmosRegexTranslator(ISqlExpressionFactory sqlExpressionFactory)
+    {
+        _sqlExpressionFactory = sqlExpressionFactory;
+    }
+
+    /// <summary>
+    ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
+    ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
+    ///     any release. You should only use it directly in your code with extreme caution and knowing that
+    ///     doing so can result in application failures when updating to a new Entity Framework Core release.
+    /// </summary>
+    public virtual SqlExpression? Translate(
+        SqlExpression? instance,
+        MethodInfo method,
+        IReadOnlyList<SqlExpression> arguments,
+        IDiagnosticsLogger<DbLoggerCategory.Query> logger)
+    {
+        if (method != IsMatch && method != IsMatchWithRegexOptions)
+        {
+            return null;
+        }
+
+        var (input, pattern) = (arguments[0], arguments[1]);
+        var typeMapping = ExpressionExtensions.InferTypeMapping(input, pattern);
+
+        if (method == IsMatch)
+        {
+            return _sqlExpressionFactory.Function(
+                "RegexMatch",
+                new[] {
+                    _sqlExpressionFactory.ApplyTypeMapping(input, typeMapping),
+                    _sqlExpressionFactory.ApplyTypeMapping(pattern, typeMapping)
+                },
+                typeof(bool));
+        }
+        else if (arguments[2] is SqlConstantExpression { Value: RegexOptions regexOptions })
+        {
+            string modifier = "";
+            if (regexOptions.HasFlag(RegexOptions.Multiline))
+            {
+                modifier += "m";
+            }
+            if (regexOptions.HasFlag(RegexOptions.Singleline))
+            {
+                modifier += "s";
+            }
+            if (regexOptions.HasFlag(RegexOptions.IgnoreCase))
+            {
+                modifier += "i";
+            }
+            if (regexOptions.HasFlag(RegexOptions.IgnorePatternWhitespace))
+            {
+                modifier += "x";
+            }
+
+            return (regexOptions & ~SupportedOptions) == 0
+                ? _sqlExpressionFactory.Function(
+                    "RegexMatch",
+                     new[]
+                     {
+                        _sqlExpressionFactory.ApplyTypeMapping(input, typeMapping),
+                        _sqlExpressionFactory.ApplyTypeMapping(pattern, typeMapping),
+                        _sqlExpressionFactory.Constant(modifier)
+                     },
+                     typeof(bool))
+                : null;
+        }
+
+        return null;
+    }
+}

test/EFCore.Cosmos.FunctionalTests/Query/NorthwindFunctionsQueryCosmosTest.cs

@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Text.RegularExpressions;
 using Microsoft.Azure.Cosmos;
 using Microsoft.EntityFrameworkCore.TestModels.Northwind;
 
@@ -1204,20 +1205,124 @@ public override async Task Int_Compare_to_simple_zero(bool async)
 
     public override async Task Regex_IsMatch_MethodCall(bool async)
     {
-        // Cosmos client evaluation. Issue #17246.
-        await AssertTranslationFailed(() => base.Regex_IsMatch_MethodCall(async));
+        await base.Regex_IsMatch_MethodCall(async);
 
-        AssertSql();
+        AssertSql(
+           @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T""))");
     }
 
     public override async Task Regex_IsMatch_MethodCall_constant_input(bool async)
     {
-        // Cosmos client evaluation. Issue #17246.
-        await AssertTranslationFailed(() => base.Regex_IsMatch_MethodCall_constant_input(async));
+        await base.Regex_IsMatch_MethodCall_constant_input(async);
 
-        AssertSql();
+        AssertSql(
+           @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(""ALFKI"", c[""CustomerID""]))");
+    }
+
+    [ConditionalTheory]
+    [MemberData(nameof(IsAsyncData))]
+    public virtual async Task Regex_IsMatch_MethodCall_With_Option_None(bool async)
+    {
+        await AssertQuery(
+            async,
+            ss => ss.Set<Customer>().Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.None)),
+            entryCount: 6);
+
+        AssertSql(
+           @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T"", """"))");
+    }
+
+    [ConditionalTheory]
+    [MemberData(nameof(IsAsyncData))]
+    public virtual async Task Regex_IsMatch_MethodCall_With_Option_IgnoreCase(bool async)
+    {
+        await AssertQuery(
+            async,
+            ss => ss.Set<Customer>().Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.IgnoreCase)),
+            entryCount: 6);
+
+        AssertSql(
+         @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T"", ""i""))");
+    }
+
+    [ConditionalTheory]
+    [MemberData(nameof(IsAsyncData))]
+    public virtual async Task Regex_IsMatch_MethodCall_With_Option_Multiline(bool async)
+    {
+        await AssertQuery(
+            async,
+            ss => ss.Set<Customer>().Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.Multiline)),
+            entryCount: 6);
+
+        AssertSql(
+         @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T"", ""m""))");
+    }
+
+    [ConditionalTheory]
+    [MemberData(nameof(IsAsyncData))]
+    public virtual async Task Regex_IsMatch_MethodCall_With_Option_Singleline(bool async)
+    {
+        await AssertQuery(
+            async,
+            ss => ss.Set<Customer>().Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.Singleline)),
+            entryCount: 6);
+
+        AssertSql(
+          @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T"", ""s""))");
     }
 
+    [ConditionalTheory]
+    [MemberData(nameof(IsAsyncData))]
+    public virtual async Task Regex_IsMatch_MethodCall_With_Option_IgnorePatternWhitespace(bool async)
+    {
+        await AssertQuery(
+            async,
+            ss => ss.Set<Customer>().Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.IgnorePatternWhitespace)),
+            entryCount: 6);
+
+        AssertSql(
+           @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T"", ""x""))");
+    }
+
+    [ConditionalTheory]
+    [MemberData(nameof(IsAsyncData))]
+    public virtual async Task Regex_IsMatch_MethodCall_With_Options_IgnoreCase_And_IgnorePatternWhitespace(bool async)
+    {
+        await AssertQuery(
+            async,
+            ss => ss.Set<Customer>().Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace)),
+            entryCount: 6);
+
+        AssertSql(
+          @"SELECT c
+FROM root c
+WHERE ((c[""Discriminator""] = ""Customer"") AND RegexMatch(c[""CustomerID""], ""^T"", ""ix""))");
+    }
+
+    [Fact]
+    public virtual void Regex_IsMatch_MethodCall_With_Unsupported_Option()
+       => Assert.Throws<InvalidOperationException>(() =>
+           Fixture.CreateContext().Customers.Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.RightToLeft)).ToList());
+
+    [Fact]
+    public virtual void Regex_IsMatch_MethodCall_With_Any_Unsupported_Option()
+       => Assert.Throws<InvalidOperationException>(() =>
+           Fixture.CreateContext().Customers.Where(o => Regex.IsMatch(o.CustomerID, "^T", RegexOptions.IgnoreCase | RegexOptions.RightToLeft)).ToList());
+
     [ConditionalTheory]
     [MemberData(nameof(IsAsyncData))]
     public virtual async Task Case_insensitive_string_comparison_instance(bool async)