setNull and default jdbcType

[Bekkum Odd-Rune]

Hi.

I've used ibatis 2.3.4, and are now starting to use 3.0.
I'm using Postgres 8.4.

I'm trying to figure out why I have to specify jdbcType on those columns that 
can be set to null.
Why was the default "Types.OTHER" removed?

Version 2.3.4:
from ParameterMap.java
      if (jdbcType != JdbcTypeRegistry.UNKNOWN_TYPE) {
        ps.setNull(i + 1, jdbcType);
      } else {
        ps.setNull(i + 1, Types.OTHER);
      }

Version 3.0.242:
from BaseTypeHandler.java
    if (parameter == null) {
      if (jdbcType == null) {
        throw new TypeException("JDBC requires that the JdbcType must be 
specified for all nullable parameters.");
      }
      ps.setNull(i, jdbcType.TYPE_CODE);
    } else {
      setNonNullParameter(ps, i, parameter, jdbcType);
    }

Thanks,
Odd-Rune.