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| <td class="back"><a id="top"></a><a href="s3.1.b.html" rel="prev"><< §3.1.(b) Definition</a></td> |
| <td class="top"><a href="index.html" rel="contents">↑ Table of Contents ↑</a></td> |
| <td class="next"><a href="s3.1.d.html" rel="next">§3.1.(d) Inheritance of role method declarations >></a></td> |
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| <div class="breadcrumb"><a class="nav" href="s3.html" rel="section">§3 Callout Binding</a> > <a class="nav" href="s3.1.html" rel="section">§3.1 Callout method binding</a></div> |
| <div class="subsect depth3" id="s3.1.c"> |
| <h4 class="subsect">§3.1.(c) <span class="title">Kinds of method designators</span><a class="img" href="s3.1.c.html" |
| title="PermaLink to (c) Kinds of method designators"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
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| <p>A method designator may either be a method name |
| |
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| <td class="ln">4</td> |
| <td><pre>getIdentification <em>-></em> getName;</pre></td> |
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| <p><strong>or</strong> |
| a complete method signature including parameter declarations and |
| return type declaration, but excluding any modifiers and declared exceptions. |
| |
| </p> |
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| <table class="listing"> |
| <tr class="line odd"> |
| <td class="ln">4</td> |
| <td><pre>String getIdentification() <em>-></em> String getName();</pre></td> |
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| <div class="codecomment"> |
| <h5>Effects:</h5> |
| <ul> |
| <li> Line 4 declares a callout binding for the role method <code>getIdentification()</code>, |
| providing an implementation for the abstract method defined in line 3. |
| </li> |
| <li> In combination with the role binding in line 2 this has the following effect:</li> |
| <li> Any call to <code>Employee.getIdentification</code> |
| is forwarded to the method <code>Person.getName</code>. |
| </li> |
| </ul> |
| </div> |
| <p>Both sides of a callout binding must use the same kind of |
| designators, i.e., designators with and without signature may not be mixed. |
| <br /> |
| Each method designator must uniquely select one method. |
| If a method designator contains a signature this signature must match exactly with the signature |
| of an existing method, i.e., no implicit conversions are applied for this matching. |
| If overloading is involved, signatures <em>must</em> be used to disambiguate. |
| |
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| <div class="breadcrumb"><a class="nav" href="s3.html" rel="section">§3 Callout Binding</a> > <a class="nav" href="s3.1.html" rel="section">§3.1 Callout method binding</a></div> |
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| width="88" /></a><address>© Stephan Herrmann, Christine Hundt, Marco Mosconi</address> |
| OT/J version 1.3 — last modified: 2011-05-15 |
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