/**
* @param rs the ResultSet from a DatabaseMetaData.getColumns call
*/
public JdbcColumnMetaData(JdbcTableMetaData table, ResultSet rs)
{
_table = table;
// COLUMN_NAME
_name = rs.getString(4);
// DATA_TYPE
_jdbcType = rs.getInt(5);
// COLUMN_SIZE
_length = rs.getInt(7);
// NULLABLE
_isNotNull = rs.getInt(11) == DatabaseMetaData.columnNoNulls;
// TYPE_NAME
string type = rs.getString(6).toLowerCase(Locale.ENGLISH);
_isUnsigned = type.indexOf("unsigned") >= 0;
_isZeroFill = type.indexOf("zerofill") >= 0;
}
/**
* Returns the table metadata.
*/
public JdbcTableMetaData getTableMetaData(Env env,
string catalog,
string schema,
string table)
{
try {
if (table == null || table.equals(""))
{
return(null);
}
TableKey key = new TableKey(getURL(), catalog, schema, table);
// XXX: needs invalidation on DROP or ALTER
JdbcTableMetaData tableMd = _tableMetadataMap.get(key);
if (tableMd != null && tableMd.isValid(env))
{
return(tableMd);
}
tableMd = new JdbcTableMetaData(env,
catalog,
schema,
table,
getMetaData());
_tableMetadataMap.put(key, tableMd);
return(tableMd);
} catch (SQLException e) {
log.log(Level.FINE, e.ToString(), e);
return(null);
}
}
