Add converter for microsoft.sql.DateTimeOffset.

Original pull request spring-projects#1875
Closes spring-projects#1873

Author: mipo256

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/dialect/JdbcSqlServerDialect.java

@@ -17,6 +17,7 @@
 
 import microsoft.sql.DateTimeOffset;
 
+import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -31,6 +32,7 @@
  *
  * @author Jens Schauder
  * @author Christoph Strobl
+ * @author Mikhail Polivakha
  * @since 2.3
  */
 public class JdbcSqlServerDialect extends SqlServerDialect {
@@ -42,6 +44,7 @@ public Collection<Object> getConverters() {
 
 		List<Object> converters = new ArrayList<>(super.getConverters());
 		converters.add(DateTimeOffsetToOffsetDateTimeConverter.INSTANCE);
+		converters.add(DateTimeOffsetToInstantConverter.INSTANCE);
 		return converters;
 	}
 
@@ -55,4 +58,15 @@ public OffsetDateTime convert(DateTimeOffset source) {
 			return source.getOffsetDateTime();
 		}
 	}
+
+	@ReadingConverter
+	enum DateTimeOffsetToInstantConverter implements Converter<DateTimeOffset, Instant> {
+
+		INSTANCE;
+
+		@Override
+		public Instant convert(DateTimeOffset source) {
+			return source.getOffsetDateTime().toInstant();
+		}
+	}
 }

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/core/dialect/JdbcSqlServerDialectTest.java

@@ -0,0 +1,26 @@
+package org.springframework.data.jdbc.core.dialect;
+
+import java.time.Instant;
+import java.util.List;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.data.jdbc.core.convert.JdbcCustomConversions;
+
+/**
+ * Tests for {@link JdbcSqlServerDialect}
+ *
+ * @author Mikhail Polivakha
+ */
+class JdbcSqlServerDialectTest {
+
+    @Test
+    void testCustomConversions() {
+        JdbcCustomConversions jdbcCustomConversions = new JdbcCustomConversions(
+          (List<?>) JdbcSqlServerDialect.INSTANCE.getConverters());
+
+        Assertions
+          .assertThat(jdbcCustomConversions.hasCustomReadTarget(microsoft.sql.DateTimeOffset.class, Instant.class))
+          .isTrue();
+    }
+}

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/testing/EnabledOnDatabase.java

@@ -44,7 +44,7 @@
  */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.TYPE)
-// required twice as the annotation lookup doesn't merge multiple occurences of the same annotation
+// required twice as the annotation lookup doesn't merge multiple occurrences of the same annotation
 @ContextCustomizerFactories(value = { TestClassCustomizerFactory.class, EnabledOnDatabaseCustomizerFactory.class })
 @Documented
 @Inherited

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/testing/IntegrationTest.java

@@ -49,7 +49,7 @@
  * @see EnabledOnDatabase
  */
 @TestExecutionListeners(value = AssumeFeatureTestExecutionListener.class, mergeMode = MERGE_WITH_DEFAULTS)
-// required twice as the annotation lookup doesn't merge multiple occurences of the same annotation
+// required twice as the annotation lookup doesn't merge multiple occurrences of the same annotation
 @ContextCustomizerFactories(value = { TestClassCustomizerFactory.class, EnabledOnDatabaseCustomizerFactory.class })
 @ActiveProfiles(resolver = CombiningActiveProfileResolver.class)
 @ExtendWith(SpringExtension.class)

spring-data-relational/src/main/java/org/springframework/data/relational/core/dialect/SqlServerDialect.java

@@ -81,17 +81,10 @@ public Position getClausePosition() {
 
 		@Override
 		public String getLock(LockOptions lockOptions) {
-			switch (lockOptions.getLockMode()) {
-
-				case PESSIMISTIC_WRITE:
-					return "WITH (UPDLOCK, ROWLOCK)";
-
-				case PESSIMISTIC_READ:
-					return "WITH (HOLDLOCK, ROWLOCK)";
-
-				default:
-					return "";
-			}
+			return switch (lockOptions.getLockMode()) {
+				case PESSIMISTIC_WRITE -> "WITH (UPDLOCK, ROWLOCK)";
+				case PESSIMISTIC_READ -> "WITH (HOLDLOCK, ROWLOCK)";
+			};
 		}
 
 		@Override