本文整理了Java中io.vertx.ext.mongo.MongoClient.count()方法的一些代码示例，展示了MongoClient.count()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。MongoClient.count()方法的具体详情如下：
包路径：io.vertx.ext.mongo.MongoClient
类名称：MongoClient
方法名：count

MongoClient.count介绍

暂无

代码示例

代码示例来源：origin: io.vertx/vertx-mongo-service

@Override
public MongoService count(String collection, JsonObject query, Handler<AsyncResult<Long>> resultHandler) {
 client.count(collection, query, resultHandler);
 return this;
}

代码示例来源：origin: io.vertx/vertx-rx-java

/**
 * Count matching documents in a collection.
 * @param collection the collection
 * @param query query used to match documents
 * @param resultHandler will be provided with the number of matching documents
 * @return 
 */
public io.vertx.rxjava.ext.mongo.MongoClient count(String collection, JsonObject query, Handler<AsyncResult<Long>> resultHandler) { 
 delegate.count(collection, query, resultHandler);
 return this;
}

代码示例来源：origin: vert-x3/vertx-rx

/**
 * Count matching documents in a collection.
 * @param collection the collection
 * @param query query used to match documents
 * @param resultHandler will be provided with the number of matching documents
 * @return 
 */
public io.vertx.rxjava.ext.mongo.MongoClient count(String collection, JsonObject query, Handler<AsyncResult<Long>> resultHandler) { 
 delegate.count(collection, query, resultHandler);
 return this;
}

代码示例来源：origin: io.vertx/vertx-lang-groovy

public static io.vertx.ext.mongo.MongoClient count(io.vertx.ext.mongo.MongoClient j_receiver, java.lang.String collection, java.util.Map<String, Object> query, io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Long>> resultHandler) {
 io.vertx.core.impl.ConversionHelper.fromObject(j_receiver.count(collection,
  query != null ? io.vertx.core.impl.ConversionHelper.toJsonObject(query) : null,
  resultHandler != null ? new io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Long>>() {
  public void handle(io.vertx.core.AsyncResult<java.lang.Long> ar) {
   resultHandler.handle(ar.map(event -> event));
  }
 } : null));
 return j_receiver;
}
public static io.vertx.ext.mongo.MongoClient remove(io.vertx.ext.mongo.MongoClient j_receiver, java.lang.String collection, java.util.Map<String, Object> query, io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Void>> resultHandler) {

代码示例来源：origin: de.braintags/vertx-key-generator

private void initCounterCollection(Handler<AsyncResult<Void>> handler) {
 LOGGER.info("Init of sequence collection with " + collectionName);
 mongoClient.count(collectionName, referenceQuery, result -> {
  if (result.failed()) {
   handler.handle(Future.failedFuture(result.cause()));
  } else {
   long count = result.result();
   if (count == 0) {
    LOGGER.info("Inserting initial sequence record into collection " + collectionName);
    this.mongoClient.insert(collectionName, referenceQuery, insertResult -> {
     if (result.failed()) {
      handler.handle(Future.failedFuture(insertResult.cause()));
     } else {
      LOGGER.info(result);
      handler.handle(Future.succeededFuture());
     }
    });
   } else {
    LOGGER.info("Record exists already");
    handler.handle(Future.succeededFuture());
   }
  }
 });
}

代码示例来源：origin: cescoffier/my-vertx-first-app

mongo.count(COLLECTION, new JsonObject(), count -> {
 if (count.succeeded()) {
  if (count.result() == 0) {