SDN Controller Programming Guide

96
}
return null;
}
createStorableInstance()
This method converts the DTO into a storable format. Storable format is the one which underlying
database client code understands. More on this in the next section.
CassandraAlertDao.java:
@Override
protected CassandraStorable<String, String>
createStorableInstance(CassandraAlert transportable) {
CassandraStorable<String, String> storable =
new CassandraStorable<String, String> (
transportable.uid(), transportable.getSysId());
storable.setColumn(new StringColumn<String>(
AlertColumnFamily.SYS_ID_NAME, transportable.getSysId()));
storable.setColumn(new StringColumn<String>(
AlertColumnFamily.DESC_COL_NAME,transportable.getDescription()));
storable.setColumn(new EnumColumn<String, Severity>(
AlertColumnFamily.SEVERITY_COL_NAME,
transportable.getSeverity()));
storable.setColumn(new DateColumn<String>(
AlertColumnFamily.TIMESTAMP_COL_NAME,
transportable.getTimestamp()));
storable.setColumn(new BooleanColumn<String>(
AlertColumnFamily.STATE_COL_NAME,
transportable.getState()));
storable.setColumn(new StringColumn<String>(
AlertColumnFamily.ORIGIN_COL_NAME, transportable.getOrigin()));
storable.setColumn(new StringColumn<String>(
AlertColumnFamily.TOPIC_COL_NAME, transportable.getTopicId()));
return storable;
}
conform()
This method is used during an update operation.
CassandraAlertDao.java:
@Override
protected CassandraAlert conform(
CassandraAlert alert, CassandraAlert alert2) {
if (alert2 == null) {
throw new NullPointerException(...);
}
if (alert == null) {