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| <h1 class="title-container" > |
| Put/Get/Remove Example |
| </h1> |
| |
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| <div class="quick-links"><ul><li><a href="#put-get-remove-example-code">Put/Get/Remove Example Code</a></li></ul></div> |
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| |
| <p>The native client release contains an example written for .NET showing how a client application |
| can establish a connection to a cluster and then use that connection to perform basic operations on a remote server. |
| The example is located in <code>../examples/dotnet/putgetremove</code>. </p> |
| |
| <p>The example performs a sequence of operations, displaying simple log entries as they run.</p> |
| |
| <ul> |
| <li><p>To run the example, follow the instructions in the <code>README.md</code> file in the example directory.</p></li> |
| <li><p>Review the source code in the example directory to see exactly how it operates.</p></li> |
| <li><p>Begin by running a script that sets up the server-side environment by invoking <code>gfsh</code> commands to create a region, simply called “example_userinfo.”</p></li> |
| <li><p>Run the example client application, which performs the following steps:</p> |
| |
| <ul> |
| <li>Connects to the server</li> |
| <li>Performs region put operations using key/value pairs</li> |
| <li>Uses region get to retrieve the values</li> |
| <li>Uses region remove to remove the values</li> |
| </ul></li> |
| </ul> |
| |
| <h2 id="put/get/remove-example-code"><a id="put-get-remove-example-code"></a>Put/Get/Remove Example Code</h2> |
| |
| <p>This section contains code snippets showing highlights of the .NET put/get/remove example. They are not intended for cut-and-paste execution. |
| For the complete source, see the example source directory.</p> |
| |
| <p>The .NET example creates a cache, then uses it to create a connection pool and a region object (of class <code>IRegion</code>).</p> |
| <pre class="highlight csharp"><code> <span class="kt">var</span> <span class="n">cache</span> <span class="p">=</span> <span class="k">new</span> <span class="nf">CacheFactory</span><span class="p">()</span> |
| <span class="p">.</span><span class="nf">Set</span><span class="p">(</span><span class="s">"log-level"</span><span class="p">,</span> <span class="s">"none"</span><span class="p">)</span> |
| <span class="p">.</span><span class="nf">Create</span><span class="p">();</span> |
| |
| <span class="n">cache</span><span class="p">.</span><span class="nf">GetPoolManager</span><span class="p">()</span> |
| <span class="p">.</span><span class="nf">CreateFactory</span><span class="p">()</span> |
| <span class="p">.</span><span class="nf">AddLocator</span><span class="p">(</span><span class="s">"localhost"</span><span class="p">,</span> <span class="m">10334</span><span class="p">)</span> |
| <span class="p">.</span><span class="nf">Create</span><span class="p">(</span><span class="s">"pool"</span><span class="p">);</span> |
| |
| <span class="kt">var</span> <span class="n">regionFactory</span> <span class="p">=</span> <span class="n">cache</span><span class="p">.</span><span class="nf">CreateRegionFactory</span><span class="p">(</span><span class="n">RegionShortcut</span><span class="p">.</span><span class="n">PROXY</span><span class="p">)</span> |
| <span class="p">.</span><span class="nf">SetPoolName</span><span class="p">(</span><span class="s">"pool"</span><span class="p">);</span> |
| <span class="kt">var</span> <span class="n">region</span> <span class="p">=</span> <span class="n">regionFactory</span><span class="p">.</span><span class="n">Create</span><span class="p"><</span><span class="kt">string</span><span class="p">,</span> <span class="kt">string</span><span class="p">>(</span><span class="s">"example_userinfo"</span><span class="p">);</span> |
| </code></pre> |
| |
| <p>After declaring some keys and values, the client then populates the data store with two key/value pairs. </p> |
| <pre class="highlight csharp"><code> <span class="n">region</span><span class="p">.</span><span class="nf">Put</span><span class="p">(</span><span class="n">rtimmonsKey</span><span class="p">,</span> <span class="n">rtimmonsValue</span><span class="p">);</span> |
| <span class="n">region</span><span class="p">.</span><span class="nf">Put</span><span class="p">(</span><span class="n">scharlesKey</span><span class="p">,</span> <span class="n">scharlesValue</span><span class="p">);</span> |
| </code></pre> |
| |
| <p>Next, the application retrieves the stored values using <code>Get</code> operations.</p> |
| <pre class="highlight csharp"><code> <span class="kt">var</span> <span class="n">user1</span> <span class="p">=</span> <span class="n">region</span><span class="p">.</span><span class="nf">Get</span><span class="p">(</span><span class="n">rtimmonsKey</span><span class="p">,</span> <span class="k">null</span><span class="p">);</span> |
| <span class="kt">var</span> <span class="n">user2</span> <span class="p">=</span> <span class="n">region</span><span class="p">.</span><span class="nf">Get</span><span class="p">(</span><span class="n">scharlesKey</span><span class="p">,</span> <span class="k">null</span><span class="p">);</span> |
| </code></pre> |
| |
| <p>Finally, the application deletes one of the stored values using the <code>Remove</code> method.</p> |
| <pre class="highlight csharp"><code> <span class="k">if</span> <span class="p">(</span><span class="n">region</span><span class="p">.</span><span class="nf">Remove</span><span class="p">(</span><span class="n">rtimmonsKey</span><span class="p">))</span> |
| <span class="p">{</span> |
| <span class="n">Console</span><span class="p">.</span><span class="nf">WriteLine</span><span class="p">(</span><span class="s">"Info for "</span> <span class="p">+</span> <span class="n">rtimmonsKey</span> <span class="p">+</span> <span class="s">" has been deleted"</span><span class="p">);</span> |
| <span class="p">}</span> |
| <span class="k">else</span> |
| <span class="p">{</span> |
| <span class="n">Console</span><span class="p">.</span><span class="nf">WriteLine</span><span class="p">(</span><span class="s">"Info for "</span> <span class="p">+</span> <span class="n">rtimmonsKey</span> <span class="p">+</span> <span class="s">" has not been deleted"</span><span class="p">);</span> |
| <span class="p">}</span> |
| </code></pre> |
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