@Test
public void getDistinctKeysAndCounts_SortByKeyDescending() {
Connection connection = null;
ResultSet resultSet = null;
try {
ConnectionManager connectionManager = temporaryFileDatabase.getConnectionManager(true);
initWithTestData(connectionManager);
connection = connectionManager.getConnection(null);
resultSet = DBQueries.getDistinctKeysAndCounts(true, NAME, connection);
Map<String, Integer> resultSetToMap = resultSetToMap(resultSet);
assertEquals(3, resultSetToMap.size());
Iterator<Map.Entry<String, Integer>> entriesIterator = resultSetToMap.entrySet().iterator();
Map.Entry entry = entriesIterator.next();
assertEquals("gps", entry.getKey());
assertEquals(1, entry.getValue());
entry = entriesIterator.next();
assertEquals("airbags", entry.getKey());
assertEquals(1, entry.getValue());
entry = entriesIterator.next();
assertEquals("abs", entry.getKey());
assertEquals(2, entry.getValue());
} finally {
DBUtils.closeQuietly(resultSet);
DBUtils.closeQuietly(connection);
}
}
public static <K, V> Map<K, V> resultSetToMap(final ResultSet resultSet) {
try {
final Map<K, V> map = new LinkedHashMap<K, V>();
while (resultSet.next()) {
K key = (K) resultSet.getObject(1);
V value = (V) resultSet.getObject(2);
map.put(key, value);
}
return map;
} catch (Exception e) {
throw new IllegalStateException("Unable to transform the resultSet into a Map", e);
}
}
@Test
public void getDistinctKeysAndCounts() {
Connection connection = null;
ResultSet resultSet = null;
try {
ConnectionManager connectionManager = temporaryFileDatabase.getConnectionManager(true);
initWithTestData(connectionManager);
connection = connectionManager.getConnection(null);
resultSet = DBQueries.getDistinctKeysAndCounts(false, NAME, connection);
Map<String, Integer> resultSetToMap = resultSetToMap(resultSet);
assertEquals(3, resultSetToMap.size());
assertEquals(new Integer(2), resultSetToMap.get("abs"));
assertEquals(new Integer(1), resultSetToMap.get("airbags"));
assertEquals(new Integer(1), resultSetToMap.get("gps"));
} finally {
DBUtils.closeQuietly(resultSet);
DBUtils.closeQuietly(connection);
}
}