Examples with RheaIterator com.alipay.sofa.jraft.rhea.client.RheaIterator used on opensource projects

Example 1 with RheaIterator

use of com.alipay.sofa.jraft.rhea.client.RheaIterator in project sofa-jraft by sofastack.

the class IteratorExample method iterator.

@SuppressWarnings("unchecked")
public static void iterator(final RheaKVStore rheaKVStore) {
    final List<byte[]> keys = Lists.newArrayList();
    for (int i = 0; i < 10; i++) {
        final byte[] bytes = writeUtf8("iterator_demo_" + i);
        keys.add(bytes);
        rheaKVStore.bPut(bytes, bytes);
    }
    final byte[] firstKey = keys.get(0);
    final byte[] lastKey = keys.get(keys.size() - 1);
    final String firstKeyString = readUtf8(firstKey);
    final String lastKeyString = readUtf8(lastKey);
    final RheaIterator<KVEntry> it1 = rheaKVStore.iterator(firstKey, lastKey, 5);
    final RheaIterator<KVEntry> it2 = rheaKVStore.iterator(firstKey, lastKey, 6, false);
    final RheaIterator<KVEntry> it3 = rheaKVStore.iterator(firstKeyString, lastKeyString, 5);
    final RheaIterator<KVEntry> it4 = rheaKVStore.iterator(firstKeyString, lastKeyString, 6, false);
    for (final RheaIterator<KVEntry> it : new RheaIterator[] { it1, it2, it3, it4 }) {
        while (it.hasNext()) {
            final KVEntry kv = it.next();
            LOG.info("Sync iterator: key={}, value={}", readUtf8(kv.getKey()), readUtf8(kv.getValue()));
        }
    }
}