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| <h1 class="page"><code>bounding</code></h1> |
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| <p>r</p> |
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| <p>Some domain classes are immutable to the user, and moreover have only a fixed number of instances. |
| Often these are "reference" ("standing") data, or lookup data/pick lists. |
| Typical examples could include categories, countries, states, and tax or interest rate tables.</p> |
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| <p>Where the number of instances is relatively small, ie bounded, then the <code>bounding</code> attribute can be used as a hint. |
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| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@DomainObject( |
| bounding=Bounding.BOUNDED, |
| editing=Editing.DISABLED <i class="conum" data-value="1"></i><b>(1)</b> |
| ) |
| public class Currency { |
| ... |
| }</code></pre> |
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| <div class="colist arabic"> |
| <table> |
| <tr> |
| <td><i class="conum" data-value="1"></i><b>1</b></td> |
| <td>This attribute is commonly combined with <code>editing=DISABLED</code> to enforce the fact that reference data is immutable</td> |
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| <p>There is nothing to prevent you from using this attribute for regular mutable entities, and indeed this is sometimes worth doing during early prototyping. |
| However, if there is no realistic upper bound to the number of instances of an entity that might be created, generally you should use <a href="../../../latest/applib-methods/prefixes.html#autoComplete" class="page"><code>autoComplete…​()</code></a> supporting method or the <a href="../../../latest/applib-ant/DomainObject.html#autoCompleteRepository" class="page"><code>@DomainObject#autoCompleteRepository</code></a> attribute instead.</p> |
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