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13.11. Hot Rod C# Client

The Hot Rod C# client is a new addition to the list of Hot Rod clients that includes Hot Rod Java and Hot Rod C++ clients. Hot Rod C# client allows .NET runtime applications to connect and interact with Red Hat JBoss Data Grid servers.
The Hot Rod C# client is aware of the cluster topology and hashing scheme, and can access an entry on the server in a single hop similar to the Hot Rod Java and Hot Rod C++ clients.
The Hot Rod C# client is compatible with 32-bit and 64-bit operating systems on which the .NET Framework is supported by Microsoft. The .NET Framework 4.0 is a prerequisite along with the supported operating systems to use the Hot Rod C# client.
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13.11.1. Hot Rod C# Client Download and Installation
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The Hot Rod C# client is included in a .msi file jboss-datagrid-<version>-hotrod-dotnet-client.msi packed for download with Red Hat JBoss Data Grid . To install the Hot Rod C# client, execute the following instructions.

Procedure 13.3. Installing the Hot Rod C# Client

  1. As an administrator, navigate to the location where the Hot Rod C# .msi file is downloaded. Run the .msi file to launch the windows installer and then click Next.
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    Figure 13.1. Hot Rod C# Client Setup Welcome

  2. Review the end-user license agreement. Select the I accept the terms in the License Agreement check box and then click Next.
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    Figure 13.2. Hot Rod C# Client End-User License Agreement

  3. To change the default directory, click Change... or click Next to install in the default directory.
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    Figure 13.3. Hot Rod C# Client Destination Folder

  4. Click Finish to complete the Hot Rod C# client installation.
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    Figure 13.4. Hot Rod C# Client Setup Completion

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13.11.2. Hot Rod C# Client Configuration
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The Hot Rod C# client is configured programmatically using the ConfigurationBuilder. Configure the host and the port to which the client should connect.
Sample C# file configuration

The following example shows how to use the ConfigurationBuilder to configure a RemoteCacheManager.

Example 13.8. C# configuration

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Infinispan.HotRod;
using Infinispan.HotRod.Config;
namespace simpleapp
{
    class Program
    {
        static void Main(string[] args)
        {
            ConfigurationBuilder builder = new ConfigurationBuilder();
            builder.AddServer()
                .Host(args.Length > 1 ? args[0] : "127.0.0.1")
                .Port(args.Length > 2 ? int.Parse(args[1]) : 11222);
            Configuration config = builder.Build();
            RemoteCacheManager cacheManager = new RemoteCacheManager(config);
            [...]
        }
    }
}
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13.11.3. Hot Rod C# Client API
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The RemoteCacheManager is a starting point to obtain a reference to a RemoteCache.
The following example shows retrieval of a default cache from the server and a few basic operations.

Example 13.9. 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Infinispan.HotRod;
using Infinispan.HotRod.Config;
namespace simpleapp
{
    class Program
    {
        static void Main(string[] args)
        {
            ConfigurationBuilder builder = new ConfigurationBuilder();
            builder.AddServer()
                .Host(args.Length > 1 ? args[0] : "127.0.0.1")
                .Port(args.Length > 2 ? int.Parse(args[1]) : 11222);
            Configuration config = builder.Build();
            RemoteCacheManager cacheManager = new RemoteCacheManager(config);
            cacheManager.Start();
            // Retrieve a reference to the default cache.
            IRemoteCache<String, String> cache = cacheManager.GetCache<String, String>();
            // Add entries.
            cache.Put("key1", "value1");
            cache.PutIfAbsent("key1", "anotherValue1");
            cache.PutIfAbsent("key2", "value2");
            cache.PutIfAbsent("key3", "value3");
            // Retrive entries.
            Console.WriteLine("key1 -> " + cache.Get("key1"));
            // Bulk retrieve key/value pairs.
            int limit = 10;
            IDictionary<String, String> result = cache.GetBulk(limit);
            foreach (KeyValuePair<String, String> kv in result)
            {
                Console.WriteLine(kv.Key + " -> " + kv.Value);
            }
            // Remove entries.
            cache.Remove("key2");
            Console.WriteLine("key2 -> " + cache.Get("key2"));
            cacheManager.Stop();
        }
    }
}
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13.11.4. String Marshaller for Interoperability
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To use the string compatibility marshaller, enable the compatibility mode on the server-side. On the C# client-side, pass an instance of CompatibilitySerializer to the RemoteCacheManager constructor similar to this: 
[...]
RemoteCacheManager cacheManager = new RemoteCacheManager(new CompatibilitySerializer());
[...]
cache.Put("key", "value");
String value = cache.Get("key");
[...]
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Note

Attempts to store or retrieve non-string key/values will result in a HotRodClientException being thrown.
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