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| author | aclement <aclement> | 2010-04-06 16:46:44 +0000 |
|---|---|---|
| committer | aclement <aclement> | 2010-04-06 16:46:44 +0000 |
| commit | 9de8934023a9ef9308c31773de042e9fe3b627ab (patch) | |
| tree | b5582c48c3670b7948eebb4895cbf7be570c862f /docs | |
| parent | 28bce901a7aade25cc749be2884c5f89a9373d48 (diff) | |
| download | aspectj-9de8934023a9ef9308c31773de042e9fe3b627ab.tar.gz aspectj-9de8934023a9ef9308c31773de042e9fe3b627ab.zip | |
1.6.9 readme (m1)
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diff --git a/docs/dist/doc/README-169.html b/docs/dist/doc/README-169.html new file mode 100644 index 000000000..7e1e5d940 --- /dev/null +++ b/docs/dist/doc/README-169.html @@ -0,0 +1,144 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> +<html> <head> +<title>AspectJ 1.6.9 Readme</title> +<style type="text/css"> +<!-- + P { margin-left: 20px; } + PRE { margin-left: 20px; } + LI { margin-left: 20px; } + H4 { margin-left: 20px; } + H3 { margin-left: 10px; } +--> +</style> +</head> + +<body> +<div align="right"><small> +© Copyright 2010 Contributors. +All rights reserved. +</small></div> + +<h1>AspectJ 1.6.9 Readme</h1> + +<h2>Features of 1.6.9 milestone 1</h2> + +<h3>Message inserts for declare warning/error messages</h3> + +<p>It is now possible to use joinpoint context in the messages attached to declare warning and declare error constructs. Some +examples:</p> + +<code><pre> +declare warning: execution(* A.m(..)): "joinpoint is {joinpoint}"; +declare warning: execution(* A.m(..)): "joinpoint kind is '{joinpoint.kind}'"; +declare warning: get(int *) && within(A): "joinpoint signature is {joinpoint.signature}"; +declare warning: execution(* A.m(..)): "joinpoint declaring type is {joinpoint.signature.declaringType}"; +declare warning: execution(* A.m(..)): "signature name for method is {joinpoint.signature.name}"; +declare warning: execution(* A.m(..)): "joinpoint location is {joinpoint.sourcelocation.sourcefile}:{joinpoint.sourcelocation.line}"; +declare warning: execution(* A.m(..)): "joinpoint line is '{joinpoint.sourcelocation.line}'"; + +declare warning: get(int *): "warning is from aspect {advice.aspecttype}"; +declare warning: execution(* A.m(..)): "warning sourcelocation is {advice.sourcelocation.sourcefile}:{advice.sourcelocation.line}"; +</pre></code> + +<p>The syntax is to enclose the relevant key within curly brackets within the message. Please raise an enhancement request +if you need other keys - the set supported so far are all those shown in the example above.</p> + + +<h3>declare warning/error for type patterns</h3> + +<p>It is now possible to use a type pattern with declare warning and declare error. For example:</p> + +<code><pre> +declare warning: I+ && !hasfield(int i): "Implementations of I are expected to have a int field called i"; +</pre></code> + +<h3>Type category type patterns</h3> + +<p>This is the ability to narrow the types of interest so that interfaces can be ignored, or inner +types, or classes or aspects. There is now a new is() construct that enables this:</p> + +<code><pre> +execution(* (!is(InnerType)).m(..)) {} +!within(* && is(InnerType)) {} +</pre></code> + +<p>Options for use in is() are: ClassType, AspectType, InterfaceType, InnerType, AnonymousType, EnumType, AnonymousType.</p> +<p>Note: It is important to understand that "!within(is(InnerType))" and "within(!is(InnerType))" are not the same. The latter one is +unlikely to be what you want to use. For example here: +<code><pre> +class Boo { + void foo() {} + class Bar { + void foo() {} + } +} +</pre></code> +<p>Bar.foo() will match within(!is(InnerType)) because within considers all surrounding types (so although Bar doesn't match the +pattern, the surrounding Boo will match it). Bar.foo() will not match !within(is(InnerType)) because Bar will match the pattern +and then the result of that match will be negated.</p> + +<h3>Intertype fields preserve visibility and name</h3> + +<p>Some users always expect this:</p> + +<code><pre> +class C { +} + +aspect X { + private int C.someField; +} +</pre></code> + +<p>To cause a private field called 'someField' to be added to C. This is conceptually what happens during compilation but if any +user then later attempts to access someField via reflection or runs a javap against the class file, they will see that isn't +what happens in practice. A public member is added with a mangled name. For code attempting to access someField built with ajc, +the visibility of the declaration will, of course, be respected. But for frameworks accessing the code later (typically through +reflection), it can cause confusion. With AspectJ 1.6.9 the name and visibility are now preserved. Compile time semantics +remain the same, it is only the weaving process that has changed to produce slightly different output.</p> +<p>Here is the output of javap when that is built with 1.6.8:</p> +<code><pre> +class C extends java.lang.Object{ + public int ajc$interField$X$someField; + C(); +} +</pre></code> +<p>Here is the output of javap when that is built with 1.6.9:</p> +<code><pre> +class C extends java.lang.Object{ + private int someField; + C(); + public static int ajc$get$someField(C); + public static void ajc$set$someField(C, int); +} +</pre></code> +<p>The name 'someField' is preserved. The visibility is also preserved but because of that we also need to generate some accessors +to get at the field.</p> + +<h3>AspectJ snapshots in a maven repo</h3> + +<p>To ease how AspectJ development builds can be consumed, they are now placed into a maven repo. When a new version of AspectJ +is put into AJDT it is also put into the maven.springframework.org repo. +The maven compatible repo is <code>maven.springframework.org/snapshot/org/aspectj</code> - and if you browse to it you will +see it currently contains 1.6.9 dev builds under the name 1.6.9.BUILD-SNAPSHOT. + +The repo is added with this magic:</p> + +<code><pre> +<repository> + <id>maven.springframework.org</id> + <name>SpringSource snapshots</name> + <url>http://maven.springframework.org/snapshot</url> +</repository> +</pre></code> +<p> +and then the version to depend upon is: + +1.6.9.BUILD-SNAPSHOT</p> + + <hr> + +<h4> +<!-- ============================== --> +</body> +</html> diff --git a/docs/dist/doc/index.html b/docs/dist/doc/index.html index 15fbdd977..791418ec1 100644 --- a/docs/dist/doc/index.html +++ b/docs/dist/doc/index.html @@ -138,6 +138,7 @@ <tr> <td>README's </td> <td>Changes and porting guide for AspectJ + <a href="README-169.html">1.6.9</a>, <a href="README-168.html">1.6.8</a>, <a href="README-167.html">1.6.7</a>, <a href="README-166.html">1.6.6</a>, |