content: /*
   * Copyright 2012-2025 Aerospike, Inc.
   *
   * Portions may be licensed to Aerospike, Inc. under one or more contributor
   * license agreements WHICH ARE COMPATIBLE WITH THE APACHE LICENSE, VERSION 2.0.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License. You may obtain a copy of
   * the License at http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  package com.aerospike.client.command;
  
  import java.io.IOException;
  
  import com.aerospike.client.AerospikeException;
  import com.aerospike.client.Key;
  import com.aerospike.client.ResultCode;
  import com.aerospike.client.cluster.Cluster;
  import com.aerospike.client.cluster.Connection;
  import com.aerospike.client.cluster.Node;
  import com.aerospike.client.policy.Policy;
  
  public final class ExistsCommand extends SyncReadCommand {
  	private boolean exists;
  
  	public ExistsCommand(Cluster cluster, Policy policy, Key key) {
  		super(cluster, policy, key);
  	}
  
  	@Override
  	protected void writeBuffer() {
  		setExists(policy, key);
  	}
  
  	@Override
  	protected void parseResult(Node node, Connection conn) throws IOException {
  		RecordParser rp = new RecordParser(conn, dataBuffer);
  		rp.parseFields(policy.txn, key, false);
  		if (node.areMetricsEnabled()) {
  			node.addBytesIn(namespace, rp.bytesIn);
  		}
  
  		if (rp.resultCode == ResultCode.OK) {
  			exists = true;
  			return;
  		}
  
  		if (rp.resultCode == ResultCode.KEY_NOT_FOUND_ERROR) {
  			exists = false;
  			return;
  		}
  
  		if (rp.resultCode == ResultCode.FILTERED_OUT) {
  			if (policy.failOnFilteredOut) {
  				throw new AerospikeException(rp.resultCode);
  			}
  			exists = true;
  			return;
  		}
  
  		throw new AerospikeException(rp.resultCode);
  	}
  
  	public boolean exists() {
  		return exists;
  	}
  }
  