public int getFieldJdbcType(int fieldOrdinal) {
RelDataType type = getFieldNamedType(fieldOrdinal);
SqlTypeName typeName = type.getSqlTypeName();
if (typeName == null) {
return Types.OTHER;
}
return typeName.getJdbcOrdinal();
}
public int getFieldScale(int fieldOrdinal) {
RelDataType type = getFieldType(fieldOrdinal);
SqlTypeName typeName = type.getSqlTypeName();
if (typeName == null) {
return 0;
}
if (typeName.allowsPrecScale(true, true)) {
return type.getScale();
} else {
return 0;
}
}
public String getFieldTypeName(int fieldOrdinal) {
RelDataType type = getFieldNamedType(fieldOrdinal);
SqlTypeName typeName = type.getSqlTypeName();
if (typeName == null) {
return type.toString();
}
switch (typeName) {
case STRUCTURED:
case DISTINCT:
return type.getSqlIdentifier().toString();
case INTERVAL_DAY_TIME:
case INTERVAL_YEAR_MONTH:
return type.toString();
}
return typeName.name();
}
// implement RelDataType
public RelDataTypeFamily getFamily() {
return typeName.getFamily();
}