/** Session失效时，调用的函数 */
public final void valueUnbound(HttpSessionBindingEvent event) {
if (dsMasterTable != null) {
dsMasterTable.close();
dsMasterTable = null;
}
if (dsDetailTable != null) {
dsDetailTable.close();
dsDetailTable = null;
}
log = null;
m_RowInfo = null;
d_RowInfos = null;
if (masterProducer != null) {
masterProducer.release();
masterProducer = null;
}
if (detailProducer != null) {
detailProducer.release();
detailProducer = null;
}
deleteObservers();
}
