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| <main id="main" role="main" class="container"> |
| <section id="cpp" class="page-section"> |
| <h1 class="first">Apache Ignite for C++</h1> |
| <div class="col-sm-12 col-md-12 col-xs-12" style="padding:0 0 20px 0;"> |
| <div class="col-sm-6 col-md-8 col-xs-12" style="padding-left:0; padding-right:0"> |
| <p> |
| Ignites's In-Memory Data Fabric for C++ is designed to deliver uncompromised |
| performance for a wide set of in-memory computing use cases through native, optimized C++ APIs. |
| </p> |
| <p> |
| Ignite C++ is built on top of Ignite. This allows you to perform almost all the in-memory data grid operations including |
| <a href="https://apacheignite-cpp.readme.io/docs/cache-operations" target="_blank">Basic Cache Operations</a>, |
| <span style="white-space: nowrap"><a href="https://apacheignite-cpp.readme.io/docs/transactions" target="_blank">ACID Transactions</a></span>, |
| <a href="https://apacheignite-sql.readme.io/docs/cplus-sql-api" target="_blank">SQL Queries</a>, and |
| <a href="https://apacheignite-sql.readme.io/docs/cplus-sql-api#section-sqlquery" target="_blank">Distributed SQL Joins</a>, |
| on replicated or partitioned caches distributed across the cluster. |
| </p> |
| <p> |
| Ignite also supports <span style="white-space: nowrap"><a href="https://apacheignite-cpp.readme.io/docs/cross-platform-interoperability" target="_blank">Cross-Platform Interoperability</a></span> |
| allowing applications to seamlessly interoperate between <b>Java</b>, <b>.NET</b>, and <b>C++</b> by writing and reading objects to and from the cache, respectively, in a common binary format. |
| Additionally, both Ignite .NET and Ignite C++ provide native APIs and their implementations that delegate most of the calls to Java using JNI. |
| Here, it is worth mentioning that the JNI overhead is minimal and does not cause any performance degradation, especially in distributed environments where network is the main obstacle. |
| Furthermore, Ignite provides a pure C++ implementation of the Binary Marshaller to contribute to the perfomance. |
| </p> |
| </div> |
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| <img class="img-responsive" src="/images/cpp.png" width="200" style="float:right;"/> |
| </div> |
| </div> |
| |
| <div class="code-examples"> |
| <div class="page-heading">Code Examples:</div> |
| <!-- Nav tabs --> |
| <ul id="messaging-examples" class="nav nav-tabs"> |
| <li class="active"><a href="#put-get" aria-controls="home" data-toggle="tab">Put and Get</a></li> |
| <li><a href="#transactions" aria-controls="profile" data-toggle="tab">Transactions</a></li> |
| <li><a href="#sql-query" aria-controls="profile" data-toggle="tab">SQL Query</a></li> |
| <li><a href="#sql-join" aria-controls="profile" data-toggle="tab">SQL Join</a></li> |
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| <div class="tab-pane active" id="put-get"> |
| <pre class="brush:cpp"> |
| // Get cache instance. |
| Cache<int, std::string> cache = grid.GetCache<int, std::string>("myCache"); |
| |
| // Store keys in cache (values will end up on different cache nodes). |
| for (int i = 0; i < 10; ++i) |
| { |
| std::stringstream value; |
| value << i; |
| |
| cache.Put(i, value.str()); |
| } |
| |
| for (int i = 0; i < 10; ++i) |
| std::cout << "Got [key=" << i << ", val=" << cache.Get(i) << "]"; |
| </pre> |
| </div> |
| <div class="tab-pane" id="transactions"> |
| <pre class="brush:cpp"> |
| Transaction tx = transactions.TxStart(); |
| |
| int hello = cache.Get("Hello"); |
| |
| if (hello == 1) |
| cache.Put("Hello", 11); |
| |
| cache.Put("World", 22); |
| |
| tx.Commit(); |
| </pre> |
| </div> |
| <div class="tab-pane" id="sql-query"> |
| <pre class="brush:cpp"> |
| Cache<int, Person> cache = grid.GetOrCreateCache<int, Person>("personCache"); |
| |
| SqlQuery qry("Person", "Salary < 1000"); |
| |
| QueryCursor<int, Person> cursor = cache.Query(qry); |
| |
| // Iterate over results. |
| while (cursor.HasNext()) |
| std::cout << cursor.GetNext().GetKey() << std::endl; |
| </pre> |
| </div> |
| <div class="tab-pane" id="sql-join"> |
| <pre class="brush:cpp"> |
| Cache<int, Person> cache = grid.GetOrCreateCache<int, Person>("personCache"); |
| |
| // SQL join on Person and Organization |
| // to find all persons working for Ignite organization. |
| SqlQuery qry("Person", "from Person as p, \"orgCache\".Organization as org" |
| "where p.OrgId = org.Id " |
| "and org.name = Ignite"); |
| |
| QueryCursor<int, Person> cursor = cache.Query(qry); |
| |
| // Iterate over results. |
| while (cursor.HasNext()) |
| std::cout << cursor.GetNext().GetKey() << std::endl; |
| </pre> |
| </div> |
| </div> |
| </div> |
| <div class="page-heading">GitHub Examples:</div> |
| <p> |
| Also see <a href="https://github.com/apache/ignite/tree/master/modules/platforms/cpp/examples" target="github">Ignite C++ examples</a> |
| available on GitHub. |
| </p> |
| |
| <p> |
| <a href="https://apacheignite-cpp.readme.io/" target="_blank"> |
| <b>Get started with Ignite C++ <i class="fa fa-angle-double-right"></i></b> |
| </a> |
| </p> |
| </section> |
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