/*******************************************************************************
* Copyright 2012-2014 by Aerospike.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
******************************************************************************/
package com.aerospike.client.async;
import java.nio.ByteBuffer;
import com.aerospike.client.AerospikeException;
import com.aerospike.client.Key;
import com.aerospike.client.ResultCode;
import com.aerospike.client.listener.ExistsListener;
import com.aerospike.client.policy.Policy;
public final class AsyncExists extends AsyncSingleCommand {
private final Policy policy;
private final ExistsListener listener;
private boolean exists;
public AsyncExists(AsyncCluster cluster, Policy policy, ExistsListener listener, Key key) {
super(cluster, key);
this.policy = (policy == null) ? new Policy() : policy;
this.listener = listener;
}
@Override
protected Policy getPolicy() {
return policy;
}
@Override
protected void writeBuffer() throws AerospikeException {
setExists(key);
}
protected void parseResult(ByteBuffer byteBuffer) throws AerospikeException {
int resultCode = byteBuffer.get(5) & 0xFF;
if (resultCode == 0) {
exists = true;
}
else {
if (resultCode == ResultCode.KEY_NOT_FOUND_ERROR) {
exists = false;
}
else {
throw new AerospikeException(resultCode);
}
}
}
protected void onSuccess() {
if (listener != null) {
listener.onSuccess(key, exists);
}
}
protected void onFailure(AerospikeException e) {
if (listener != null) {
listener.onFailure(e);
}
}
}