@Test
// 50 times: 597 mills.
public void listKeyspaces() throws Exception {
int count = 50;
//
long beg = System.currentTimeMillis();
for (int i = 0; i < count; i++) {
CtSession ctSession = ctSessionFactory.openSession();
System.out.println(ctSession);
//
List<KsDef> kds = ctSession.describe_keyspaces();
for (KsDef kd : kds) {
StringBuilder buffer = new StringBuilder();
buffer.append("[");
buffer.append(kd.getName());
buffer.append("] ");
List<CfDef> cds = kd.getCf_defs();
int size = cds.size();
for (int j = 0; j < size; j++) {
buffer.append(cds.get(j).getName());
if (j < size - 1) {
buffer.append(", ");
}
}
//
System.out.println(buffer);
}
ctSessionFactory.closeSession();
}
long end = System.currentTimeMillis();
System.out.println(count + " times: " + (end - beg) + " mills. ");
}
@Test
public void getKeyspace() throws Exception {
CtSession ctSession = ctSessionFactory.openSession();
//
long beg = System.currentTimeMillis();
String KEYSPACE = "system";
//
KsDef kd = ctSession.describe_keyspace(KEYSPACE); // NotFoundException
ctSessionFactory.closeSession();
//
long end = System.currentTimeMillis();
System.out.println((end - beg) + " at mills.");
//
System.out.println(kd);
}