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97 lines
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HTML
97 lines
4.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>CUCC Expo Handbook: Troggle UML Class Diagrams</title>
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<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
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</head>
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<body><style>body { background: #fff url(/images/style/bg-system.png) repeat-x 0 0 }</style>
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<h2 id="tophead">CUCC Expo Handbook - Troggle UML Class Diagrams</h2>
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<h1>Troggle UML Class Diagrams</h1>
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<style>figure {font-weight: bold; font-size: small; font-family: sans-serif;font-variant-caps: small-caps;}</style>
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<div class="onright">
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<figure>
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<a href="https://yuml.me/mkay2100/edit/Troggle-1"><img alt="Troggle UML Class Diagram" src="../i/trogclass-1.jpg"></a>
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<br><figcaption>Class Diagram - Essential Level (draft - to be corrected)</figcaption>
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</figure>
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</div>
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<p>This shows the major "things" in troggle and how they relate to each other.
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<p>So <strong>a survex (SVX) file</strong> is dated to a particular day during the expedition and usually has between 1 and 3 people associated with it.
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<p>A <strong>Logbook entry</strong> has several people involved and may relate to a cave. It will be dated to a day during the expedition.
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<h3>Design Diagrams</h3>
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<p>Analysis of expo and design of troggle is done using three levels:
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<style>
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li {padding-left: 0;margin-left: 0;line-height:160%;}
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ul, ol {padding-inline-start: 1em;}
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</style>
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<ol>
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<li>The '<strong>essential</strong>' or 'real-world' level.
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<li>The '<strong>specification</strong>' level.
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<li>The '<strong>implementation</strong>' level.
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</ol>
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<p>As anyone reading this has probably been on expo and you might think that we can skip the <strong>real-world level</strong>. Not so: the multiplicities (the number of participants in the association) of the relationships between the different cave survey artefacts can be surprising.
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<p>The <strong>specification level</strong> is where the action is.
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This is where we decide which aspects of the real world <em>we will ignore</em> and what <em>extra concepts</em> we need to make things work.
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<p>So we ignore who is resident at top-camp (even though today we record this religiously because of the tax implications for the GastHof at base). We do need to track the in-computer associations between survex files: the *include tree, what directories they live in, what wallet-directory they relate to, and all the individual survex blocks of survey measurements within each survex file.
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<p>We only need <strong>implementation-level</strong> diagrams for tiny, tricky issues. Python is very clear so serves as its own implementation specification. However Django does need some explanation.
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<h3>Class Diagrams</h3>
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<p>A Class Diagram is one the the basic types of structural diagram (as opposed to behavioral diagrams) used to understand complex systems.
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<ul>
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<li><a href="https://en.wikipedia.org/wiki/Class_diagram">wikipedia:Class diagram</a>
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<li><a href="https://www.tutorialspoint.com/uml/uml_class_diagram.htm">UML - Class Diagram</a>
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</ul>
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<p>
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The purpose of class diagram is to model the static view of an application.
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<h3>Online free class diagram editor</h3>
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<p>This diagram was created online using the YUML free software at <a href="https://yuml.me/mkay2100/edit/Troggle-1">https://yuml.me//</a>.
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<p>
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You can edit your own version to revise this when it becomes outdated. <br>This is the entire source code that generates the diagram:
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<pre><code style ="font-size:x-small">
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// Troggle Class Diagram
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// ------------------------------
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// Chain elements like this
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[SVX file]<>-wallet 1..*>
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[Wallet]++-1..*>[Scanned Note]
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[Wallet]++-1..*>[Scanned CentreLine]
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[Scanned CentreLine]++-1..*>
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[Drawing{bg:turquoise}]
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[People{bg:wheat}]<->
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[LogBook Entry{bg:violet}]
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[People]1..3<->[SVX file]
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[Cave{bg:cyan}]->[LogBook Entry]
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[Cave]->[SVX file]
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// note:
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[Cave]-.-[Drawing{bg:turquoise}]
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[Expedition{bg:green}]1<>-1..*
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[ExpeditionDay{bg:green}]<>-
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[LogBook Entry]
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[ExpeditionDay]1<>-1..*[SVX file]
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[PersonExpedition{bg:yellowgreen}]1<-1
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[People{bg:wheat}]
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[ExpeditionDay]1..*--1.*
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[PersonExpedition{bg:yellowgreen}]
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</code></pre>
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<hr />
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</body>
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</html> |