@Override
public boolean checkConnection(NoSQLConnection connection) throws NoSQLServerException {
Object session = null;
try {
cluster = null;
initCluster(connection);
ContextType contextType = null;
String ksName = connection.getAttributes().get(ICassandraAttributies.DATABASE);
if (connection.isContextMode()) {
contextType = ConnectionContextHelper.getContextTypeForContextMode(connection);
}
if (contextType != null) {
ksName = ContextParameterUtils.getOriginalValue(contextType, ksName);
}
if (StringUtils.isEmpty(ksName)) {
session = NoSQLReflection.invokeMethod(cluster, "connect"); // $NON-NLS-1$
} else {
session =
NoSQLReflection.invokeMethod(cluster, "connect", new Object[] {ksName}); // $NON-NLS-1$
}
return true;
} catch (Exception e) {
throw new NoSQLServerException(e);
} finally {
try {
if (session != null) {
NoSQLReflection.invokeMethod(session, "close"); // $NON-NLS-1$
}
} catch (NoSQLReflectionException e) {
// only for debug
e.printStackTrace();
}
}
}
private static void shutdownNeo4JDb(final Object db) {
try {
NoSQLReflection.invokeMethod(db, "shutdown", new Object[0]); // $NON-NLS-1$
} catch (NoSQLReflectionException e) {
// Nothing we can do here.
e.printStackTrace();
}
}
@Override
public Set<String> getSuperColumnFamilyNames(NoSQLConnection connection, String ksName)
throws NoSQLServerException {
Set<String> scfNames = new HashSet<String>();
Object session = null;
ClassLoader classLoader = NoSQLClassLoaderFactory.getClassLoader(connection);
try {
if (ksName == null) {
List<String> ksNames = getKeySpaceNames(connection);
for (String name : ksNames) {
scfNames.addAll(getColumnFamilyNames(connection, name));
}
} else {
initCluster(connection);
session =
NoSQLReflection.invokeMethod(
cluster, "connect", new Object[] {"system"}); // $NON-NLS-1$ //$NON-NLS-2$
Object toPrepare =
NoSQLReflection.newInstance(
"com.datastax.driver.core.SimpleStatement", //$NON-NLS-1$
new Object[] {"select * from schema_columnfamilies where keyspace_name =?"},
classLoader); //$NON-NLS-1$
Object prepared =
NoSQLReflection.invokeMethod(
session,
"prepare",
new Object[] {toPrepare}, // $NON-NLS-1$
Class.forName(
"com.datastax.driver.core.RegularStatement",
false,
classLoader)); //$NON-NLS-1$
Object statement =
NoSQLReflection.invokeMethod(
prepared,
"bind",
new Object[] {new Object[] {ksName}}, // $NON-NLS-1$
Object[].class);
// Statement
Object resultSet =
NoSQLReflection.invokeMethod(
session,
"execute",
new Object[] {statement}, // $NON-NLS-1$
Class.forName(
"com.datastax.driver.core.Statement", false, classLoader)); // $NON-NLS-1$
Iterator iterator =
(Iterator) NoSQLReflection.invokeMethod(resultSet, "iterator"); // $NON-NLS-1$
while (iterator.hasNext()) {
Object row = iterator.next();
// String type = row.getString("type");s
String type =
(String)
NoSQLReflection.invokeMethod(
row, "getString", new Object[] {"type"}); // $NON-NLS-1$ //$NON-NLS-2$
String scfName =
(String)
NoSQLReflection.invokeMethod(
row,
"getString",
new Object[] {"columnfamily_name"}); // $NON-NLS-1$ //$NON-NLS-2$
if (type.equalsIgnoreCase("super")) { // $NON-NLS-1$
scfNames.add(scfName);
}
}
}
} catch (Exception e) {
throw new NoSQLServerException(e);
} finally {
try {
if (session != null) {
NoSQLReflection.invokeMethod(session, "close"); // $NON-NLS-1$
closeConnections();
}
} catch (NoSQLReflectionException e) {
// only for debug
e.printStackTrace();
}
}
return scfNames;
}
