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| <title>Join Point Modifiers</title><link rel="stylesheet" href="aspectj-docs.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.44"><link rel="home" href="index.html" title="The AspectJTM 5 Development Kit Developer's Notebook"><link rel="up" href="jpsigs.html" title="Chapter 1. Join Point Signatures"><link rel="previous" href="join-point-signatures.html" title="Join Point Signatures"><link rel="next" href="join-point-matching-summary.html" title="Summary of Join Point Matching"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Join Point Modifiers</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="join-point-signatures.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Join Point Signatures</th><td width="20%" align="right"> <a accesskey="n" href="join-point-matching-summary.html">Next</a></td></tr></table><hr></div><div class="sect1"><a name="join-point-modifiers"></a><div class="titlepage"><div><h2 class="title" style="clear: both"><a name="join-point-modifiers"></a>Join Point Modifiers</h2></div></div><p>Every join point has a single set of modifiers - these include | |
| the standard Java modifiers such as <tt>public, private, | |
| static, abstract</tt> etc., any annotations, and the throws | |
| clauses of methods and constructors. These modifiers are the | |
| modifiers of the <span class="emphasis"><i>subject</i></span> of the join point.</p><p> | |
| The following table defines the join point subject for each kind | |
| of join point. | |
| </p><div class="informaltable" id="d0e435"><a name="d0e435"></a><table border="1"><colgroup><col><col></colgroup><thead><tr><th>Join Point Kind</th><th>Subject</th></tr></thead><tbody><tr><td>Method call</td><td>The method picked out by Java as | |
| the static target of the method call.</td></tr><tr><td>Method execution</td><td>The method that is executing.</td></tr><tr><td>Constructor call</td><td>The constructor being called.</td></tr><tr><td>Constructor execution</td><td>The constructor executing.</td></tr><tr><td>Field get</td><td>The field being accessed.</td></tr><tr><td>Field set</td><td>The field being set.</td></tr><tr><td>Pre-initialization</td><td>The first constructor executing in | |
| this constructor chain.</td></tr><tr><td>Initialization</td><td>The first constructor executing in | |
| this constructor chain.</td></tr><tr><td>Static initialization</td><td>The type being initialized.</td></tr><tr><td>Handler</td><td>The declared type of the | |
| exception being handled.</td></tr><tr><td>Advice execution</td><td>The advice being executed.</td></tr></tbody></table></div><p>For example, given the following types</p><pre class="programlisting"> | |
| public class X { | |
| @Foo | |
| protected void doIt() {...} | |
| } | |
| public class Y extends X { | |
| public void doIt() {...} | |
| } | |
| </pre><p>Then the modifiers for a call to <tt>(Y y) y.doIt()</tt> | |
| are simply <tt>{public}</tt>. The modifiers for a call to | |
| <tt>(X x) x.doIt()</tt> are <tt>{@Foo,protected}</tt>. | |
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