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TEXT-ALIGN: center; text-align: center} - span.c1 {COLOR:black} - /*]]>*/ - </style> -</head> - -<body lang="EN-US" xml:lang="EN-US"> - <h3 class="Section1 c2"><span class='c1'>Step 1: Define your - interfaces and component types</span></h3> - - <h3 class="Section1 c2"><span class='c1'><img width="447" height= - "350" id="_x0000_i1025" src="images/step1.jpg" name= - "_x0000_i1025" /></span></h3> - - <h3 class="Section1 c3"><span class='c1'> </span></h3> - - <h3 class="Section1 c3"><span class='c4'>Please make sure to read - the following article to under the Stock Quoter system - architecture before delving further into the - tutorial:</span></h3> - - <p class="Section1 c7"><span class='c6'>·<span class= - "c5"> </span></span> <a href= - "http://www.cuj.com/documents/s=9152/cujexp0404vinoski/">The - CORBA Component Model, Part 2: Defining Components with the IDL - 3.x Types</a></p> - - <h3 class="Section1 c3"><span class='c4'> </span></h3> - - <h3 class="Section1 c3"><span class='c8'>Directory - Structure:</span></h3> - - <h3 class="Section1 c3"><span class='c4'>The tutorial relies on - the following directory structure. Create Quoter and all its - subdirectories as shown below. We will describe the purpose of - these directories later in the tutorial.</span></h3> - - <h3 class="Section1 c9"><span class='c4'>Quoter</span></h3> - - <h3 class="Section1 c3"><span class= - 'c4'> - |---- descriptors</span></h3> - - <h3 class="Section1 c3"><span class= - 'c4'> - |---- Stock_Base</span></h3> - - <h3 class="Section1 c3"><span class= - 'c4'> - |---- Distributor</span></h3> - - <h3 class="Section1 c3"><span class= - 'c4'> - |---- Broker</span></h3> - - <h3 class="Section1 c3"><span class='c4'> </span></h3> - - <h3 class="Section1 c3"><span class= - 'c8'>Preliminaries:</span></h3> - - <h3 class="Section1 c11"><span class='c10'>·<span class= - "c5"> </span></span> - <span class='c4'>We use the Make Project Creator (MPC) throughout - this tutorial. Understanding MPC will aid you in understanding - this tutorial. For more information on MPC please look at the - following:</span></h3> - - <h3 class="Section1 c13"><span class='c12'>1.<span class= - "c5"> </span></span> <span class='c4'>MPC - <a href="../../../../../../MPC/docs/html/MakeProjectCreator.html">Chapter</a>.</span></h3> - - <h3 class="Section1 c13"><span class='c12'>2.<span class= - "c5"> </span></span> <span class= - 'c4'>$ACE_ROOT/MPC/<a href="../../../../../../MPC/docs/README">README</a></span></h3> - - <h3 class="Section1 c11"><span class='c10'>·<span class= - "c5"> </span></span> - <span class='c4'>In the beginning of this tutorial, we're using a - perl scripts which creates the MPC files for you. This script is - called <span class="c42">generate_component_mpc.pl</span> - and is located in $CIAO_ROOT/bin.</span></h3> - - <h3 class="Section1 c11"><span class='c10'>·<span class= - "c5"> </span></span> - <span class='c4'>When running this script, please use the full - path to the CIAO bin directory instead of $CIAO_ROOT/bin on Linux or - %CIAO_ROOT%\bin on Windows.</span></h3> - - <h3 class="Section1 c11"><span class='c10'>·<span class= - "c5"> </span></span> - <span class='c4'>To understand the meaning of different parameters - passed to <span class="c42">generate_component_mpc.pl</span> - <span class='c4'>type the following command:<br/> - <span class="c42">generate_component_mpc.pl -h</span><br /> - <br /></span></span></h3> - - <p class='c14'><span class='c1'>Interface Design:</span></p> - - <p class='c17'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c1'>In the <i>Quoter/Stock_Base</i> sub-directory, - place an idl file</span> <code><i><span class= - 'c16'>Stock_Base.idl</span></i></code> <span class='c1'>that you - could copy from <a href="Stock_Base/Stock_Base.idl">here</a> . - This file defines the interfaces and events that will be used by - both StockDistributor and StockBroker components. We put together - the common interface definitions so the base library can be - shared by both components, reducing the footprint of "real" - components.</span></p> - - <p class='c17'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c1'>Next, we need to create a Make Project Creator - (MPC) file to generate the make files for us. From the - <i>Quoter/Stock_Base</i> subdirectory, type the following - command:</span></p> - - <p class='c19'><span class="c18">generate_component_mpc.pl - –n –e –l ../lib –o ../lib Stock_Base</span></p> - - <p class='c21'><span class='c20'>The command above will generate - a <i>Stock_Base.mpc</i> file that contains two projects - <i>Stock_Base_stub</i> and <i>Stock_Base_skel</i> for the Stub - and Servant code respectively. Since we're using events in this - tutorial, we need to add –e to the command line. - The MPC file should look like <a href="Stock_Base/Stock_Base.mpc"> - this</a>.<br/> - Mind that "-o" (library output) and "-l" (path to libraries) are added. - This is done to make the compilation of this example easier and at - runtime, all deliveralbes are in one directory. Beware that you need to - add this directory to your system path when running the executables - (see page 4). - </span></p> - - <p class='c14'><span class='c1'>Component Design:</span></p> - - <p class='c22'><b><span class= - 'c1'>Distributor:</span></b><span class= - 'c1'> </span></p> - - <p class='c26'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c1'>In the</span> <code><i><span class= - 'c23'>Quoter/Distributor</span></i></code> <code><span class= - "c24">sub-directory</span></code><span class='c1'>, place an idl - file</span> <code><i><span class= - 'c25'>StockDistributor.idl</span></i></code> <span class= - 'c1'>that looks like <a href= - "Distributor/StockDistributor.idl">this</a>. This file defines - the StockDistributor component interfaces.</span></p> - - <p class='c26'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c1'>Next, we need to create a Make Project Creator - (MPC) file to generate the make files for us. From the - <i>Quoter/Distributor</i> <span> </span>sub-directory, type - the following command</span></p> - - <p class="c28"><span class="c27">generate_component_mpc.pl - –e –p Stock_Base –c StockDistributorDriver - –o ../lib –l ../lib StockDistributor</span></p> - - <p class='c31'><span class='c20'>The command above takes a few - optional parameters. The -p option indicates that the <span class= - "c29">StockDistributor</span> component has a dependency on - <span class="c29">Stock_Base</span>, the -c option - causes the script to generate MPC files for a simple driver - program. In this tutorial, we use a simple driver program to - demonstrate how a non-CCM applications can interact with - component applications.</span></span></p> - - <p class="c33"><span class="c32">The command above will generate - a <i>StockDistributor.mpc</i> file that contains several - projects that will build the Stub, Servant, and Executor code - respectively. - <p class="c39">· - <span class="c32">Next we write a simple driver program - (<code><i><span class= - "c37">StockDistributorDriver.cpp)</span></i></code> that will - control the <span class="c29">StockDistributor</span> component. - The simple driver program controls when the <span class= - "c29">StockDistributor</span> component publishes stock quotes, - the rates of publication, and when publication of stock quotes - stops. The simple driver program should look - like </span><span class="c32"><a href= - "Distributor/StockDistributorDriver.cpp">this</a>.</span></span></p> - - <p class='c26'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c20'>The generated</span> <span class='c20'>MPC file - should look like <a href= - "Distributor/StockDistributor.mpc">this</a>. - </span></p> - - <p class='c40'><span class='c1'>Broker:</span></p> - - <p class='c26'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c1'>In the</span> <code><i><span class= - 'c23'>Quoter/Broker</span></i></code> <span class= - 'c1'><code><span class="c41">sub-directory,</span></code> place - an idl file</span> <code><i><span class= - 'c16'>StockBroker.id</span></i></code><code><span class= - 'c23'>l</span></code> <span class='c1'>that looks like <a href= - "Broker/StockBroker.idl">this</a>. This file defines the - StockBroker component interface.</span></p> - - <p class='c26'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c1'>Next, we need to create a Make Project Creator - (MPC) file to generate the make files for us. From the - <i>Quoter/Broker</i> sub-directory, type the following - command:</span></p> - - <p class='c43'><span class="c42"><span class="c27"> - generate_component_mpc.pl –e –p Stock_Base - –c StockBrokerDriver –o ../lib –l ../lib - StockBroker</span></span></p> - - <p class='c31'><span class='c20'><span class="c32">The command - above takes a few optional parameter. The -p option states that - the <span class="c29">StockBroker</span> component has a - dependency on <span class="c29">Stock_Base</span><span class="c32">, the - -c option causes the script to generates make files for a simple - driver program. In this tutorial, we use a simple driver program - to demonstrate how a non-CCM applications can interact with - Components.</span></span></span></span></p> - - <p class="c33"><span class="c32"><span class="c32">The command - above will generate a <i>StockBroker.mpc</i> file that - contains several projects that will build the Stub, Servant, - and Executor code respectively. - - <p class="c39"><span class="c36">·<span class= - "c35"> </span></span> - <span class="c32">Next we write a simple driver program - (<code><i><span class= - "c37">StockBrokerDriver.cpp)</span></i></code> that would control - the <span class="c29">StockBroker</span> component. The simple - driver program controls what stocks the <span class= - "c29">StockBroker</span> component subscribes to. The simple - driver program should look like </span><span class= - "c32"><a href="Broker/StockBrokerDriver.cpp">this</a>.</span></p> - - <p class='c44'><span class='c15'>·<span class= - "c5"> </span></span> - <span class='c20'><span class="c32">The generated</span> - <span class="c32">MPC file should look like</span> <a href= - "Broker/StockBroker.mpc">this</a>.</span></p> - - <p class='c46'><span class='c1'><a href= - "index.html">Previous</a> - <a href="02.html">Next</a></span></p> - - <div class='c48'> - <hr class="c47" size="2" width="100%" /> - </div> - - <div class="Section1"> - <address class='c49'> - <span class='c1'><a href= - "mailto:ming.xiong@vanderbilt.edu">Ming - Xiong<br /></a></span> <a href= - "mailto:abdullah.sowayan@lmco.com">Abdullah Sowayan</a> - </address> - - <address class="c50"> - - </address> - - <address class="c50"> - - </address> - </div> -</body> -</html> |