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| <td class="back"><a id="top"></a><a href="s2.1.b.html" rel="prev"><< §2.1.(b) Inheritance</a></td> |
| <td class="top"><a href="index.html" rel="contents">↑ Table of Contents ↑</a></td> |
| <td class="next"><a href="s2.1.d.html" rel="next">§2.1.(d) No-variance >></a></td> |
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| <div class="breadcrumb"><a class="nav" href="s2.html" rel="section">§2 Role Binding</a> > <a class="nav" href="s2.1.html" rel="section">§2.1 playedBy relation</a></div> |
| <div class="subsect depth3" id="s2.1.c"> |
| <h4 class="subsect">§2.1.(c) <span class="title">Covariant refinement</span><a class="img" href="s2.1.c.html" |
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| <p>An <em>explicit</em> sub-role (sub-class using <code>extends</code>) |
| can refine the <code>playedBy</code> relation to a more |
| specific base class (this is the basis for |
| <a href="s2.3.3.html" title="§2.3.3 Smart lifting" class="sect">smart lifting (§2.3.3)</a>).<br /> |
| If a role class inherits several <code>playedBy</code> relations from |
| its super-class and its super-interfaces, there must be a most specific |
| base-class among these relations, which is conform to all other base-classes. |
| This most specific base-class is the base-class of the current role. |
| |
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| <td class="back"><a href="s2.1.b.html" rel="prev"><< §2.1.(b) Inheritance</a></td> |
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| <td class="next"><a href="s2.1.d.html" rel="next">§2.1.(d) No-variance >></a></td> |
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| <div class="breadcrumb"><a class="nav" href="s2.html" rel="section">§2 Role Binding</a> > <a class="nav" href="s2.1.html" rel="section">§2.1 playedBy relation</a></div> |
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| width="88" /></a><address>© Stephan Herrmann, Christine Hundt, Marco Mosconi</address> |
| OT/J version 1.3.1 — last modified: 2013-05-28 |
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