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POIs this 'layering' of my web-service correct? Can it be improved?
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  1. POIs this 'layering' of my web-service correct? Can it be improved?
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    copied!<p>I am writing a Web Service to retrieve Invoice information from a database table. The specifics are as follows:<br> I intend to give <code>InvoiceAgentId</code> as input and retrieve <code>PayerId</code>,<code>PayerName</code>, <code>EffDate</code> and <code>InvoiceAgentId</code>.<br> Now,<br> 1. In the <code>InvoiceInfoSearch.asmx.cs</code> file I have the <code>WebMethod</code> ... <code>GetInvoiceInfo</code><br> 2. I have the DTO objects <code>InvoiceInfoRequest</code> and <code>InvoiceInfoResponse</code><br> 3. I have the BusinessLayer manager class <code>InvoiceSearchmanager</code><br> 4. I have the DAL <code>InvoiceInfoDAL</code> </p> <p>The web method in point #1 instantiates the <code>InvoiceSearchManager</code> class and calls the <code>GetInvoiceInfo</code> method in the manager by passing the <strong><code>InvoiceInfoRequest</code></strong>. Then the manager method instantiates <strong><code>InvoiceInfoDAL</code></strong> and calls the <strong><code>GetInvoiceInfo</code></strong> method in the DAL by passing the <strong><code>InvoiceInfoRequest</code></strong>. In the DAL method the <strong><code>InvoiceInfoResponse</code></strong> is instantiated and populated with retrieved record set and then propagated back to web method.</p> <p>My questions:<br> 1. Can <strong>both the</strong> <code>InvoiceInfoRequest</code> and <code>InvoiceInfoResponse</code> DTO classes have the exact same members? In my case <code>PayerId</code>,<code>PayerName</code>, <code>EffDate</code> and <code>InvoiceAgentId</code>.<br> 2. Is this layering correct? Can it be bettered?</p>
 

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