private boolean fetchnextKey() {
if (this.innerIterator.isValid()) {
byte[] keyEntry = this.innerIterator.key();
// Check if the next key returned starts with the expected
// prefix
if (StoreBinaryFormat.extractPartition(keyEntry) != partitionId) {
return false;
}
this.innerIterator.next();
cache = new ByteArray(StoreBinaryFormat.extractKey(keyEntry));
return true;
}
return false;
}
protected boolean makeMore() {
if (innerIterator.isValid()) {
byte[] keyEntry = innerIterator.key();
// Check if the next key returned starts with the expected
// prefix
if (StoreBinaryFormat.extractPartition(keyEntry) != partitionId) {
return false;
}
byte[] valueEntry = innerIterator.value();
innerIterator.next();
ByteArray key = new ByteArray(StoreBinaryFormat.extractKey(keyEntry));
for (Versioned<byte[]> val : StoreBinaryFormat.fromByteArray(valueEntry)) {
cache.add(new Pair<ByteArray, Versioned<byte[]>>(key, val));
}
return true;
}
return false;
}
public RocksdbEntriesIterator(RocksIterator innerIterator, int partition) {
this.innerIterator = innerIterator;
this.partitionId = partition;
// Caller of the RocksIterator should seek it before the first use.
// seek to the prefix specified
this.innerIterator.seek(StoreBinaryFormat.makePartitionKey(partition));
cache = new ArrayList<Pair<ByteArray, Versioned<byte[]>>>();
}
public RocksdbKeysIterator(RocksIterator innerIterator, int partition) {
this.innerIterator = innerIterator;
this.partitionId = partition;
// Caller of the RocksIterator should seek it to the prefix before
// the first use.
this.innerIterator.seek(StoreBinaryFormat.makePartitionKey(partition));
cache = null;
}
private ByteArray validateAndConstructKey(ByteArray key) {
StoreUtils.assertValidKey(key);
int partition = routingStrategy.getMasterPartition(key.get());
ByteArray prefixedKey = new ByteArray(StoreBinaryFormat.makePrefixedKey(key.get(), partition));
return prefixedKey;
}