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PODesign Pattern Questions in Java
 

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    <p>I have a Design pattern Question in Java/J2EE</p> <p>Problem Statement::<br> Suppose there are 2 files as below </p> <blockquote> <p>XYZ.properties file --> name = value pair<br> abc.xml file --> attribute=value pair. </p> </blockquote> <p>Both the above files have <code>&lt;name,value&gt;</code> pairs. </p> <p>The question is "<strong>Design a component/jsp page such that you can read,edit,save the name,value pairs of either a Property file or xml file.?"</strong><br> So which Design pattern would you suggest i should be using in Java.?<br> The name,values pair are then fetched and displayed in another jsp page where i should be able to read,edit,save the name,value pairs such that<br> <strong>1>read operation results in reading the name,value pair</strong><br> <strong>2>Edit operation results in editing the name,value pair</strong><br> <strong>3>Save operation results in saving the value for the corresponding name,value pair in database and consequently updates either the property/xml file.</strong> </p> <p><code>**My Initial Analysis** : i would use a Factory design pattern since i have 2 files which have name,value pairs and at run time decide which one to choose depending on the name of file invoked,Once done i would pass the parameters to jsp file for Read,edit and save operation.Save would save the name,value pair to Database but i dont know how will it update the corresponding value for that name in either the property/xml file as well.</code></p> <p>Is my Understanding correct ? If not please provide a design/solution in java for the same,such that READ,EDIT,SAVE operation for pairs in either ".properties file" or ".xml file" are carried out?</p>
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