HHH-10693 - Fix PostgreSQL should not use nvarchar when using Nationaliztaion

hibernate-core/src/main/java/org/hibernate/cfg/annotations/SimpleValueBinder.java

@@ -39,6 +39,8 @@ import org.hibernate.cfg.Ejb3JoinColumn;
 import org.hibernate.cfg.NotYetImplementedException;
 import org.hibernate.cfg.PkDrivenByDefaultMapsIdSecondPass;
 import org.hibernate.cfg.SetSimpleValueTypeSecondPass;
+import org.hibernate.dialect.Dialect;
+import org.hibernate.engine.jdbc.spi.JdbcServices;
 import org.hibernate.internal.CoreMessageLogger;
 import org.hibernate.internal.util.StringHelper;
 import org.hibernate.mapping.SimpleValue;
@@ -150,8 +152,10 @@ public class SimpleValueBinder {
 		typeParameters.clear();
 		String type = BinderHelper.ANNOTATION_STRING_DEFAULT;
 
-		isNationalized = property.isAnnotationPresent( Nationalized.class )
+		if ( getDialect().supportsNationalizedTypes() ) {
-				|| buildingContext.getBuildingOptions().useNationalizedCharacterData();
+			isNationalized = property.isAnnotationPresent( Nationalized.class )
+					|| buildingContext.getBuildingOptions().useNationalizedCharacterData();
+		}
 
 		Type annType = null;
 		if ( (!key && property.isAnnotationPresent( Type.class ))
@@ -307,6 +311,14 @@ public class SimpleValueBinder {
 		applyAttributeConverter( property, attributeConverterDescriptor );
 	}
 
+	private Dialect getDialect() {
+		return buildingContext.getBuildingOptions()
+				.getServiceRegistry()
+				.getService( JdbcServices.class )
+				.getJdbcEnvironment()
+				.getDialect();
+	}
+
 	private void applyAttributeConverter(XProperty property, AttributeConverterDescriptor attributeConverterDescriptor) {
 		if ( attributeConverterDescriptor == null ) {
 			return;

hibernate-core/src/main/java/org/hibernate/dialect/Dialect.java

@@ -2850,4 +2850,13 @@ public abstract class Dialect implements ConversionContext {
 	public boolean supportsNamedParameters(DatabaseMetaData databaseMetaData) throws SQLException {
 		return databaseMetaData != null && databaseMetaData.supportsNamedParameters();
 	}
+
+	/**
+	 * Does this dialect supports Nationalized Types
+	 *
+	 * @return boolean
+	 */
+	public boolean supportsNationalizedTypes() {
+		return true;
+	}
 }

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQL81Dialect.java

@@ -599,4 +599,9 @@ public class PostgreSQL81Dialect extends Dialect {
 	public IdentityColumnSupport getIdentityColumnSupport() {
 		return new PostgreSQL81IdentityColumnSupport();
 	}
+
+	@Override
+	public boolean supportsNationalizedTypes() {
+		return false;
+	}
 }