| Stephan Herrmann | 0166441 | 2010-04-01 20:28:43 +0000 | [diff] [blame] | 1 | <!DOCTYPE html |
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| Stephan Herrmann | 0166441 | 2010-04-01 20:28:43 +0000 | [diff] [blame] | 6 | <link rel="stylesheet" type="text/css" href="../css/ot.css" /> |
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| 8 | <title>OT/J Language Definition v1.3</title> |
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| 11 | <div id="content"> |
| 12 | <table class="nav"> |
| 13 | <tr> |
| 14 | <td class="back"><a id="top"></a><a href="s7.html" rel="prev"><< §7 Role Encapsulation</a></td> |
| 15 | <td class="top"><a href="index.html" rel="contents">↑ Table of Contents ↑</a></td> |
| 16 | <td class="next"><a href="s9.html" rel="next">§9 Value Dependent Classes >></a></td> |
| 17 | </tr> |
| 18 | </table> |
| 19 | <div class="chapter" id="s8"> |
| 20 | <div class="headl"> |
| 21 | <div class="headr"> |
| 22 | <h1>§8 Join Point Queries</h1> |
| 23 | </div> |
| 24 | </div> |
| 25 | <div id="toc-box"> |
| 26 | <ul class="toc-box"> |
| 27 | <li><a href="s8.html">§8 Join Point Queries</a></li> |
| 28 | <li><a href="#s8.1">§8.1 Join point queries</a></li> |
| 29 | <li><a href="#s8.2">§8.2 Query expressions</a></li> |
| 30 | <li><a href="#s8.3">§8.3 OT/J meta model</a></li> |
| 31 | </ul> |
| 32 | </div> |
| 33 | <div class="intro"> |
| 34 | <h3>Defining sets of join points for interception</h3> |
| 35 | <div class="line"></div> |
| 36 | <div class="term">join point</div> |
| 37 | <div class="termdesc">In OT/J a join point is considered to be an element |
| 38 | of the program. A meta model exists which defines the <strong>kinds</strong> |
| 39 | of join points that can be identified. |
| 40 | </div> |
| 41 | <div class="line"></div> |
| 42 | <div class="term">join point interception</div> |
| 43 | <div class="termdesc">The purpose of identifying join points is to intercept program execution at these points |
| 44 | by means of <em>callin</em> bindings. |
| 45 | </div> |
| 46 | <div class="line"></div> |
| 47 | <div class="term">join point query</div> |
| 48 | <div class="termdesc">Sets of join points are defined using functional queries of the program's reflective representation.</div> |
| 49 | <div class="line"></div> |
| 50 | <div class="term"><i>pointcuts</i></div> |
| 51 | <div class="termdesc">Dynamic "pointcuts" comparable to AspectJ's <code>cflow</code> or even the Trace-Matches approach |
| 52 | are not subject to the join point language of OT/J. These features will be added at a different level |
| 53 | of abstraction. Note, that guard predicates (<a href="s5.html#s5.4" title="§5.4 Guard predicates" class="sect">§5.4</a>) subsume the dynamic |
| 54 | capabilities of the pointcuts <code>if, target, this, args</code>. |
| 55 | </div> |
| 56 | <div class="line"></div> |
| 57 | </div> |
| 58 | <div class="sect depth2" id="s8.1"> |
| Stephan Herrmann | 109893e | 2010-05-18 22:02:53 +0000 | [diff] [blame] | 59 | <h2 class="sect">§8.1 Join point queries<a class="img" href="s8.html#s8.1" |
| 60 | title="PermaLink to §8.1 Join point queries"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
| 61 | alt="" /></a><span class="toplink"><a href="#top">↑ §8</a></span></h2> |
| Stephan Herrmann | 0166441 | 2010-04-01 20:28:43 +0000 | [diff] [blame] | 62 | <p><strong><em>This section will describe the query language used to define sets |
| 63 | of join points. As of version 1.4.0 of the OTDT this query language is not yet supported.</em></strong></p> |
| 64 | </div> |
| 65 | <div class="sect depth2" id="s8.2"> |
| Stephan Herrmann | 109893e | 2010-05-18 22:02:53 +0000 | [diff] [blame] | 66 | <h2 class="sect">§8.2 Query expressions<a class="img" href="s8.html#s8.2" |
| 67 | title="PermaLink to §8.2 Query expressions"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
| 68 | alt="" /></a><span class="toplink"><a href="#top">↑ §8</a></span></h2> |
| Stephan Herrmann | 0166441 | 2010-04-01 20:28:43 +0000 | [diff] [blame] | 69 | </div> |
| 70 | <div class="sect depth2" id="s8.3"> |
| Stephan Herrmann | 109893e | 2010-05-18 22:02:53 +0000 | [diff] [blame] | 71 | <h2 class="sect">§8.3 OT/J meta model<a class="img" href="s8.html#s8.3" |
| 72 | title="PermaLink to §8.3 OT/J meta model"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
| 73 | alt="" /></a><span class="toplink"><a href="#top">↑ §8</a></span></h2> |
| Stephan Herrmann | 0166441 | 2010-04-01 20:28:43 +0000 | [diff] [blame] | 74 | </div> |
| 75 | </div> |
| 76 | <table class="nav"> |
| 77 | <tr> |
| 78 | <td class="back"><a href="s7.html" rel="prev"><< §7 Role Encapsulation</a></td> |
| 79 | <td class="top"><a href="index.html" rel="contents">↑ Table of Contents ↑</a></td> |
| 80 | <td class="next"><a href="s9.html" rel="next">§9 Value Dependent Classes >></a></td> |
| 81 | </tr> |
| 82 | </table> |
| 83 | </div> |
| 84 | <div id="footer"> |
| Stephan Herrmann | 109893e | 2010-05-18 22:02:53 +0000 | [diff] [blame] | 85 | <hr /><a class="w3c img" href="http://jigsaw.w3.org/css-validator/check/referer" |
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| 87 | width="88" /></a><address>© Stephan Herrmann, Christine Hundt, Marco Mosconi</address> |
| Stephan Herrmann | 8f0fa31 | 2010-06-08 18:24:55 +0000 | [diff] [blame^] | 88 | OT/J version 1.3 — last modified: 2010-06-08 |
| Stephan Herrmann | 0166441 | 2010-04-01 20:28:43 +0000 | [diff] [blame] | 89 | </div> |
| 90 | </body> |
| 91 | </html> |