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// Copyright 2009-present MongoDB, Inc.
//
// 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.
#include <iostream>
#include <bsoncxx/builder/basic/array.hpp>
#include <bsoncxx/builder/basic/document.hpp>
#include <bsoncxx/builder/basic/kvp.hpp>
#include <bsoncxx/json.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/options/find.hpp>
#include <mongocxx/uri.hpp>
#include <examples/macros.hh>
using bsoncxx::builder::basic::kvp;
using bsoncxx::builder::basic::make_array;
using bsoncxx::builder::basic::make_document;
int EXAMPLES_CDECL main() {
// The mongocxx::instance constructor and destructor initialize and shut down the driver,
// respectively. Therefore, a mongocxx::instance must be created before using the driver and
// must remain alive for as long as the driver is in use.
mongocxx::instance inst{};
mongocxx::client conn{mongocxx::uri{}};
auto db = conn["test"];
// Query for all the documents in a collection.
{
auto cursor = db["restaurants"].find({});
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query for equality on a top level field.
{
auto cursor = db["restaurants"].find(make_document(kvp("borough", "Manhattan")));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query by a field in an embedded document.
{
auto cursor = db["restaurants"].find(make_document(kvp("address.zipcode", "10075")));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query by a field in an array.
{
auto cursor = db["restaurants"].find(make_document(kvp("grades.grade", "B")));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query with the greater-than operator ($gt).
{
auto cursor = db["restaurants"].find(
make_document(kvp("grade.score", make_document(kvp("$gt", 30)))));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query with the less-than operator ($lt).
{
auto cursor = db["restaurants"].find(
make_document(kvp("grades.score", make_document(kvp("$lt", 10)))));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query with a logical conjunction (AND) of query conditions.
{
auto cursor = db["restaurants"].find(
make_document(kvp("cuisine", "Italian"), kvp("address.zipcode", "10075")));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Query with a logical disjunction (OR) of query conditions.
{
auto cursor = db["restaurants"].find(
make_document(kvp("$or",
make_array(make_document(kvp("cuisine", "Italian")),
make_document(kvp("address.zipcode", "10075"))))));
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
// Sort query results.
{
mongocxx::options::find opts;
opts.sort(make_document(kvp("borough", 1), kvp("address.zipcode", -1)));
auto cursor = db["restaurants"].find({}, opts);
for (auto&& doc : cursor) {
std::cout << bsoncxx::to_json(doc) << std::endl;
}
}
}
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