@Test
public void rocksIterator() throws RocksDBException {
RocksDB db = null;
Options options = null;
RocksIterator iterator = null;
try {
options = new Options();
options.setCreateIfMissing(true)
.setCreateMissingColumnFamilies(true);
db = RocksDB.open(options,
dbFolder.getRoot().getAbsolutePath());
db.put("key1".getBytes(), "value1".getBytes());
db.put("key2".getBytes(), "value2".getBytes());
iterator = db.newIterator();
iterator.seekToFirst();
assertThat(iterator.isValid()).isTrue();
assertThat(iterator.key()).isEqualTo("key1".getBytes());
assertThat(iterator.value()).isEqualTo("value1".getBytes());
iterator.next();
assertThat(iterator.isValid()).isTrue();
assertThat(iterator.key()).isEqualTo("key2".getBytes());
assertThat(iterator.value()).isEqualTo("value2".getBytes());
iterator.next();
assertThat(iterator.isValid()).isFalse();
iterator.seekToLast();
iterator.prev();
assertThat(iterator.isValid()).isTrue();
assertThat(iterator.key()).isEqualTo("key1".getBytes());
assertThat(iterator.value()).isEqualTo("value1".getBytes());
iterator.seekToFirst();
iterator.seekToLast();
assertThat(iterator.isValid()).isTrue();
assertThat(iterator.key()).isEqualTo("key2".getBytes());
assertThat(iterator.value()).isEqualTo("value2".getBytes());
iterator.status();
} finally {
if (db != null) {
db.close();
}
if (options != null) {
options.dispose();
}
if (iterator != null) {
iterator.dispose();
}
}
}