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| </script><!--End Google Analytics code--></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">4.6 Automatic Imports for the Web subsystem</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch04s05.html">Prev</a> </td><th width="60%" align="center">4. Developing Applications</th><td width="20%" align="right"> <a accesskey="n" href="ch04s07.html">Next</a></td></tr></table><hr></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="developing-applications-automatic-imports-web"></a>4.6 Automatic Imports for the Web subsystem</h2></div></div></div><p> | |
| The Virgo Web Server generates automatic package imports (i.e., via the | |
| <code class="literal">Import-Package</code> manifest header) for the web subsystem’s | |
| artifacts. This section lists which packages are automatically generated. | |
| </p><p> | |
| All WARs, as required by the OSGi Web Applications specification, and Web application bundles (see <a class="link" href="ch09s05.html" title="9.5 Default Web Application Bundle Headers">Default Web | |
| Application Bundle Headers</a>) will automatically import the following packages: | |
| </p><div class="itemizedlist"><ul type="disc"><li><code class="literal">javax.servlet;version="2.5"</code></li><li><code class="literal">javax.servlet.http;version="2.5"</code></li><li><code class="literal">javax.servlet.jsp";version="2.1"</code></li><li><code class="literal">javax.servlet.jsp.el;version="2.1"</code></li><li><code class="literal">javax.servlet.jsp.tagext;version="2.1"</code></li><li><code class="literal">javax.el";version="1.0"</code></li></ul></div><p> | |
| In addition to the above-described imports, VWS will also | |
| generate automatic imports for all of the packages that are exported by the system | |
| bundle, unless an import for the package already exists in the artifact’s manifest, | |
| or the artifact contains the package, i.e. within <code class="literal">WEB-INF/classes</code>, | |
| or in a jar file in <code class="literal">WEB-INF/lib</code>. When an import is generated, it | |
| is versioned such that it exactly matches the version or versions of the package that | |
| are exported from the system bundle. For example, a package that’s exported only at | |
| version <code class="literal">1.0.0</code> will generate an import with a version of | |
| <code class="literal">[1.0.0,1.0.0]</code>, and a package that’s exported at version | |
| <code class="literal">1.0.0</code> and version <code class="literal">2.0.0</code> will generate an import | |
| with a version of <code class="literal">[1.0.0,2.0.0]</code>. | |
| </p><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Tip: System Bundle Package Exports"><tr><td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="images/tip.gif"></td><th align="left">System Bundle Package Exports</th></tr><tr><td align="left" valign="top"><p> | |
| For further details on which packages are exported by the | |
| OSGi system bundle, consult the <code class="filename">java6-server.profile</code> | |
| file located in the <code class="literal">SERVER_HOME/lib</code> directory. | |
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