david
397cad2594
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.RemObjects@2 b6239004-a887-0f4b-9937-50029ccdca16
41 lines
1.7 KiB
HTML
41 lines
1.7 KiB
HTML
<html>
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<head>
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<link rel="stylesheet" type="text/css" href="..\styles.css">
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</head>
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<body>
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<img src="..\..\ro.png" alt="" align="right">
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<!-------------------------------------------------------------------------->
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<p class="h1">
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<span>Class Factories</span>
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</p>
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<h2>Purpose</h2><p>This example shows how to use a <strong>Class Factory </strong>to generate three types of
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server:</p>
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<ul>
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<li><strong>Singleton</strong>: all clients access a single server object.</li>
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<li><strong>Single Call</strong>: server instances are created on demand and destroyed after processing the method call.</li>
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<li><strong>Pooled</strong>: multiple server instances are accessible by clients. This
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factory works exactly the same as Singleton, unless the first server instance is
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busy.</li></ul>
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<p>
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<strong>Note</strong>: to test this sample properly, you need to run at least two clients.
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</p>
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<p>
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</p>
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<h2>
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Examine the Code</h2>
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<ul>
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<li>See how the three services were defined by editing the service library. Do this by making the <strong>server</strong>
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the selected project and by using the menu option: <strong>RemObjects | Edit Service Library</strong>.
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<br />
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<strong>Note</strong>: if you don't see this menu option but see 'Service Builder' instead,
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you still have the client set as the current project.</li>
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<li>The implementation of the three server types is held in three Impl.pas files: <strong>SingletonService_Impl</strong>,
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<strong>SingleCallService_Impl</strong> and <strong>PooledService_Impl</strong>.</li>
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<li>Examine the simple code needed to invoke the methods in <strong>ClassFactoryClientMain.pas</strong>. </li>
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</ul>
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</body>
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</html> |