69 lines
5.8 KiB
HTML
69 lines
5.8 KiB
HTML
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<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat Configuration Reference - The Resources Component</title><meta name="author" value="Remy Maucherat"><meta name="email" value="remm@apache.org"></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img src="../../images/tomcat.gif" align="right" alt="
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The Apache Tomcat Servlet/JSP Container
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" border="0"></a></td><td><font face="arial,helvetica,sanserif"><h1>Apache Tomcat 6.0</h1></font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img src="../../images/asf-logo.gif" align="right" alt="Apache Logo" border="0"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><tr><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left"><table border="0" width="100%" cellspacing="4"><tr><td align="left" valign="top"><h1>Apache Tomcat Configuration Reference</h1><h2>The Resources Component</h2></td><td align="right" valign="top" nowrap="true"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote>
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<p>The <strong>Resources</strong> element represents the <em>web
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application static resources</em>, from which classes will be loaded,
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HTML, JSP and the other static files will be served. This allows the webapp
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to reside on various mediums other than the filesystem, like compressed
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in a WAR file, in a JDBC database, or in a more advanced versioning
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repository.</p>
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<p>A unified caching engine is provided for all accesses to the webapp
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resources made by the servlet container and web applications which use the
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container provided mechanisms to access such resources, such as class laoder
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access, access through the <code>ServletContext</code> interface, or native
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access through the <code>DirectoryContext</code> interface.</p>
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<p><strong>Note: Running a webapp with non-filesystem based
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Resources implementations is only possible when the webapp does not
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rely on direct filesystem access to its own resources, and uses the methods
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in the ServletContext interface to access them.</strong></p>
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<p>A Resources element MAY be nested inside a
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<a href="context.html">Context</a> component. If it is not included,
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a default filesystem based Resources will be created automatically,
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which is sufficient for most requirements.</p>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Attributes"><strong>Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Common Attributes"><strong>Common Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<p>All implementations of <strong>Resources</strong>
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support the following attributes:</p>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><code>className</code></td><td align="left" valign="center">
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<p>Java class name of the implementation to use. This class must
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implement the <code>javax.naming.directory.DirContext</code> interface.
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It is recommended for optimal functionality and performance,
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but not mandatory, that the class extend
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<code>org.apache.naming.resources.BaseDirContext</code>, as well as
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use the special object types provided in the
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<code>org.apache.naming.resources</code> for returned objects.
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If not specified, the standard value (defined below) will be used.</p>
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</td></tr></table>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Standard Implementation"><strong>Standard Implementation</strong></a></font></td></tr><tr><td><blockquote>
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<p>The standard implementation of <strong>Resources</strong> is
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<strong>org.apache.naming.resources.FileDirContext</strong>, and
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is configured by its parent Context element.</p>
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</blockquote></td></tr></table>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Nested Components"><strong>Nested Components</strong></a></font></td></tr><tr><td><blockquote>
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<p>No components may be nested inside a <strong>Resources</strong> element.</p>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Special Features"><strong>Special Features</strong></a></font></td></tr><tr><td><blockquote>
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<p>No special features are associated with a <strong>Resources</strong>
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element.</p>
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</blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
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Copyright © 1999-2006, Apache Software Foundation
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</em></font></div></td></tr></table></body></html>
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