HHH-17576 inappropriate use of getDefaultTimestampPrecision() as default precision

This default is only appropriate for timestamps (hence the name) and should not be
used for dates or plain times.

hibernate-core/src/main/java/org/hibernate/type/descriptor/java/CalendarDateJavaType.java

@@ -142,6 +142,6 @@ public class CalendarDateJavaType extends AbstractTemporalJavaType<Calendar> {
 
 	@Override
 	public int getDefaultSqlPrecision(Dialect dialect, JdbcType jdbcType) {
-		return dialect.getDefaultTimestampPrecision();
+		return 0;
 	}
 }

hibernate-core/src/main/java/org/hibernate/type/descriptor/java/CalendarTimeJavaType.java

@@ -144,6 +144,9 @@ public class CalendarTimeJavaType extends AbstractTemporalJavaType<Calendar> {
 
 	@Override
 	public int getDefaultSqlPrecision(Dialect dialect, JdbcType jdbcType) {
-		return dialect.getDefaultTimestampPrecision();
+		// times represent repeating events - they
+		// almost never come equipped with seconds,
+		// let alone fractional seconds!
+		return 0;
 	}
 }

hibernate-core/src/main/java/org/hibernate/type/descriptor/java/DateJavaType.java

@@ -52,6 +52,7 @@ public class DateJavaType extends AbstractTemporalJavaType<Date> implements Vers
 
 	@Override
 	public int getDefaultSqlPrecision(Dialect dialect, JdbcType jdbcType) {
+		// this "Date" is really a timestamp
 		return dialect.getDefaultTimestampPrecision();
 	}
 

hibernate-core/src/main/java/org/hibernate/type/descriptor/java/JdbcTimeJavaType.java

@@ -273,7 +273,10 @@ public class JdbcTimeJavaType extends AbstractTemporalJavaType<Date> {
 
 	@Override
 	public int getDefaultSqlPrecision(Dialect dialect, JdbcType jdbcType) {
-		return dialect.getDefaultTimestampPrecision();
+		// times represent repeating events - they
+		// almost never come equipped with seconds,
+		// let alone fractional seconds!
+		return 0;
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/type/descriptor/java/LocalTimeJavaType.java

@@ -189,7 +189,10 @@ public class LocalTimeJavaType extends AbstractTemporalJavaType<LocalTime> {
 
 	@Override
 	public int getDefaultSqlPrecision(Dialect dialect, JdbcType jdbcType) {
-		return dialect.getDefaultTimestampPrecision();
+		// times represent repeating events - they
+		// almost never come equipped with seconds,
+		// let alone fractional seconds!
+		return 0;
 	}
 
 }

hibernate-core/src/main/java/org/hibernate/type/descriptor/java/OffsetTimeJavaType.java

@@ -251,7 +251,10 @@ public class OffsetTimeJavaType extends AbstractTemporalJavaType<OffsetTime> {
 
 	@Override
 	public int getDefaultSqlPrecision(Dialect dialect, JdbcType jdbcType) {
-		return dialect.getDefaultTimestampPrecision();
+		// times represent repeating events - they
+		// almost never come equipped with seconds,
+		// let alone fractional seconds!
+		return 0;
 	}
 
 }

hibernate-core/src/main/java/org/hibernate/type/descriptor/sql/spi/DdlTypeRegistry.java

@@ -162,9 +162,6 @@ public class DdlTypeRegistry implements Serializable {
 				return getTypeName( typeCode, Size.precision( dialect.getFloatPrecision() ) );
 			case SqlTypes.DOUBLE:
 				return getTypeName( typeCode, Size.precision( dialect.getDoublePrecision() ) );
-			case SqlTypes.TIME:
-			case SqlTypes.TIME_WITH_TIMEZONE:
-			case SqlTypes.TIME_UTC:
 			case SqlTypes.TIMESTAMP:
 			case SqlTypes.TIMESTAMP_WITH_TIMEZONE:
 			case SqlTypes.TIMESTAMP_UTC: