本文整理了Java中io.vertx.redis.RedisClient.hexists方法的一些代码示例，展示了RedisClient.hexists的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。RedisClient.hexists方法的具体详情如下：
包路径：io.vertx.redis.RedisClient
类名称：RedisClient
方法名：hexists

RedisClient.hexists介绍

[英]Determine if a hash field exists
[中]确定哈希字段是否存在

代码示例

代码示例来源：origin: io.vertx/vertx-rx-java

/**
 * Determine if a hash field exists
 * @param key Key string
 * @param field Field name
 * @param handler Handler for the result of this call.
 * @return 
 */
public io.vertx.rxjava.redis.RedisClient hexists(String key, String field, Handler<AsyncResult<Long>> handler) { 
 delegate.hexists(key, field, handler);
 return this;
}

代码示例来源：origin: vert-x3/vertx-rx

/**
 * Determine if a hash field exists
 * @param key Key string
 * @param field Field name
 * @param handler Handler for the result of this call.
 * @return 
 */
public io.vertx.rxjava.redis.RedisClient hexists(String key, String field, Handler<AsyncResult<Long>> handler) { 
 delegate.hexists(key, field, handler);
 return this;
}

代码示例来源：origin: org.swisspush/redisques

private Future<Boolean> isQueueLocked(final String queue) {
  Future<Boolean> future = Future.future();
  redisClient.hexists(getLocksKey(), queue, event -> {
    if (event.failed()) {
      log.warn("Failed to check if queue '{}' is locked. Assume no.", queue, event.cause());
      // TODO:  Is it correct, to assume a queue is not locked in case our query failed?
      // Previous implementation assumed this. See "https://github.com/hiddenalpha/vertx-redisques/blob/v2.5.1/src/main/java/org/swisspush/redisques/RedisQues.java#L856".
      future.complete(Boolean.FALSE);
    } else if (event.result() == null) {
      future.complete(Boolean.FALSE);
    } else {
      future.complete(event.result() == 1);
    }
  });
  return future;
}