/** @return the key prefix used to store column data */
public String getColumnKey(IColumn c) {
String key = c.getColumnId();
if (c.getTable() != null) {
key = getTableKey(c.getTable()) + "#" + key;
}
return key;
}
public void setColumn(IColumn<?> column) {
m_column = column;
m_columnId = column.getColumnId();
}