420 lines
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420 lines
26 KiB
HTML
<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Catalina Functional Specifications - Administrative Apps - Administered Objects</title><meta name="author" value="Craig McClanahan"><meta name="email" value="craigmcc@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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Catalina Functional Specifications
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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><!--LEFT SIDE NAVIGATION--><td width="20%" valign="top" nowrap="true"><p><strong>Links</strong></p><ul><li><a href="../../index.html">Docs Home</a></li><li><a href="index.html">Functional Specs</a></li></ul><p><strong>Administrative Apps</strong></p><ul><li><a href="fs-admin-apps.html">Overall Requirements</a></li><li><a href="mbean-names.html">Tomcat MBean Names</a></li><li><a href="fs-admin-objects.html">Administered Objects</a></li><li><a href="fs-admin-opers.html">Supported Operations</a></li></ul><p><strong>Internal Servlets</strong></p><ul><li><a href="fs-default.html">Default Servlet</a></li><li><a href="fs-invoker.html">Invoker Servlet</a></li></ul><p><strong>Realm Implementations</strong></p><ul><li><a href="fs-jdbc-realm.html">JDBC Realm</a></li><li><a href="fs-jndi-realm.html">JNDI Realm</a></li><li><a href="fs-memory-realm.html">Memory Realm</a></li></ul></td><!--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>Catalina Functional Specifications</h1><h2>Administrative Apps - Administered Objects</h2></td><td align="right" valign="top" nowrap="true"><small><a href="printer/fs-admin-objects.html"><img src="../../images/printer.gif" border="0" alt="Printer Friendly Version"><br>print-friendly<br>version
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</a></small></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Administered Objects Overview"><strong>Administered Objects Overview</strong></a></font></td></tr><tr><td><blockquote>
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<p>This document defines the <em>Administered Objects</em> that represent
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the internal architectural components of the Catalina servlet container.
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Associated with each is a set of <a href="fs-admin-opers.html">Supported
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Operations</a> that can be performed when the administrative application is
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"focused" on a particular configurable object.</p>
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<p>The following Administered Objects are defined:</p>
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<ul>
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<li><a href="#Access Logger">Access Logger</a></li>
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<li><a href="#Connector">Connector</a></li>
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<li><a href="#Context">Context</a></li>
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<li><a href="#Default Context">Default Context</a></li>
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<li><a href="#Default Deployment Descriptor">Default Deployment Descriptor</a></li>
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<li><a href="#Engine">Engine</a></li>
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<li><a href="#Environment Entry">Environment Entry</a></li>
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<li><a href="#Host">Host</a></li>
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<li><a href="#JDBC Resource">JDBC Resource</a></li>
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<li><a href="#Loader">Loader</a></li>
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<li><a href="#Manager">Manager</a></li>
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<li><a href="#Realm">Realm</a></li>
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<li><a href="#Request Filter">Request Filter</a></li>
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<li><a href="#Server">Server</a></li>
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<li><a href="#Service">Service</a></li>
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</ul>
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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="Access Logger"><strong>Access Logger</strong></a></font></td></tr><tr><td><blockquote>
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<p>An <em>Access Logger</em> is an optional <code>Valve</code> that can
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create request access logs in the same formats as those provided by
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web servers. Such access logs are useful input to hit count and user
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access tracking analysis programs. An Access Logger can be attached to
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an <em>Engine</em>, a <em>Host</em>, a <em>Context</em>, or a <em>Default
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Context</em>.</p>
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<p>The standard component implementing an <em>Access Logger</em> is
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<code>org.apache.catalina.valves.AccessLogValve</code>. It supports the
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following configurable properties:</p>
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<ul>
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<li><code>debug</code> - Debugging detail level. [0]</li>
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<li><code>directory</code> - Absolute or relative (to $CATALINA_HOME) path
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of the directory into which access log files are created.
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[logs].</li>
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<li><code>pattern</code> - Pattern string defining the fields to be
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included in the access log output, or "common" for the standard
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access log pattern. See
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<code>org.apache.catalina.valves.AccessLogValve</code> for more
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information. [common]</li>
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<li><code>prefix</code> - Prefix added to the beginning of each log file
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name created by this access logger.</li>
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<li><code>resolveHosts</code> - Should IP addresses be resolved to host
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names in the log? [false]</li>
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<li><code>suffix</code> - Suffix added to the end of each log file name
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created by this access logger.</li>
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</ul>
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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="Connector"><strong>Connector</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>Connector</em> is the representation of a communications endpoint
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by which requests are received from (and responses returned to) a Tomcat
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client. The administrative applications shall support those connectors
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that are commonly utilized in Tomcat installations, as described in detail
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below.</p>
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<p>For standalone use, the standard connector supporting the HTTP/1.1
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protocol is <code>org.apache.catalina.connectors.http.HttpConnector</code>.
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It supports the following configurable properties:</p>
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<ul>
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<li><code>acceptCount</code> - The maximum queue length of incoming
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connections that have not yet been accepted. [10]</li>
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<li><code>address</code> - For servers with more than one IP address, the
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address upon which this connector should listen. [All Addresses]</li>
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<li><code>bufferSize</code> - Default input buffer size (in bytes) for
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requests created by this Connector. [2048]</li>
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<li><code>debug</code> - Debugging detail level. [0]</li>
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<li><code>enableLookups</code> - Should we perform DNS lookups on remote
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IP addresses when <code>request.getRemoteHost()</code> is called?
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[true]</li>
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<li><code>maxProcessors</code> - The maximum number of processor threads
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supported by this connector. [20]</li>
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<li><code>minProcessors</code> - The minimum number of processor threads
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to be created at container startup. [5]</li>
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<li><code>port</code> - TCP/IP port number on which this Connector should
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listen for incoming requests. [8080]</li>
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<li><code>proxyName</code> - Host name to be returned when an application
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calls <code>request.getServerName()</code>. [Value of Host: header]</li>
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<li><code>proxyPort</code> - Port number to be returned when an application
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calls <code>request.getServerPort()</code>. [Same as <code>port</code>]
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</li>
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</ul>
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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="Context"><strong>Context</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>Context</em> is the representation of an individual web application,
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which is associated with a corresponding <em>Host</em>. Note that the
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administrable properties of a <em>Context</em> do <strong>not</strong>
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include any settings from inside the web application deployment descriptor
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for that application.</p>
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<p>The standard component implementing a <em>Context</em> is
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<code>org.apache.catalina.core.StandardContext</code>. It supports the
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following configurable properties:</p>
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<ul>
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<li><code>cookies</code> - Should be use cookies for session identifier
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communication? [true]</li>
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<li><code>crossContext</code> - Should calls to
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<code>ServletContext.getServletContext()</code> return the actual
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context responsible for the specified path? [false]</li>
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<li><code>debug</code> - Debugging detail level. [0]</li>
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<li><code>docBase</code> - The absolute or relative (to the
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<code>appBase</code> of our owning <em>Host</em>) pathname of a
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directory containing an unpacked web application, or of a web
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application archive (WAR) file.</li>
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<li><code>override</code> - Should settings in this <em>Context</em>
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override corresponding settings in the <em>Default Context</em>?
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[false]</li>
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<li><code>path</code> - Context path for this web application, or an empty
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string for the root application of a <em>Host</em>. [Inferred from
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directory or WAR file name]</li>
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<li><code>reloadable</code> - Should Tomcat monitor classes in the
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<code>/WEB-INF/classes</code> directory for changes, and reload the
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application if they occur? [false]</li>
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<li><code>useNaming</code> - Should Tomcat provide a JNDI naming context,
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containing preconfigured entries and resources, corresponding to the
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requirements of the Java2 Enterprise Edition specification? [true]</li>
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<li><code>workDir</code> - Absolute pathname of a scratch directory that is
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provided to this web application. [Automatically assigned relative to
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$CATALINA_HOME/work]</li>
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</ul>
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<p>Each <em>Context</em> is owned by a parent <em>Host</em>, and is
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associated with:</p>
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<ul>
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<li>An optional <em>Access Logger</em> that logs all requests processed
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by this web application.</li>
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<li>Zero or more <em>Environment Entries</em> representing environment
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entries for the JNDI naming context associated with a web
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application.</li>
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<li>Zero or more <em>JDBC Resources</em> representing database connection
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pools associated with a web application.</li>
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<li>A <em>Loader</em> representing the web application class loader used
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by this web application.</li>
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<li>A <em>Manager</em> representing the session manager used by this
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web application.</li>
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<li>An optional <em>Realm</em> used to provide authentication and access
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control information for this web application.</li>
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<li>Zero or more <em>Request Filters</em> used to limit access to this
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web application based on remote host name or IP address.</li>
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</ul>
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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="Default Context"><strong>Default Context</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>Default Context</em> represents a subset of the configurable
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properties of a <em>Context</em>, and is used to set defaults for those
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properties when web applications are automatically deployed. A <em>Default
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Context</em> object can be associated with an <em>Engine</em> or a
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<em>Host</em>. The following configurable properties are supported:</p>
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<ul>
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<li><code>cookies</code> - Should be use cookies for session identifier
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communication? [true]</li>
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<li><code>crossContext</code> - Should calls to
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<code>ServletContext.getServletContext()</code> return the actual
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context responsible for the specified path? [false]</li>
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<li><code>reloadable</code> - Should Tomcat monitor classes in the
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<code>/WEB-INF/classes</code> directory for changes, and reload the
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application if they occur? [false]</li>
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<li><code>useNaming</code> - Should Tomcat provide a JNDI naming context,
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containing preconfigured entries and resources, corresponding to the
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requirements of the Java2 Enterprise Edition specification? [true]</li>
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</ul>
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<p>Each <em>Default Context</em> is owned by a parent <em>Engine</em> or
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<em>Host</em>, and is associated with:</p>
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<ul>
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<li>Zero or more <em>Environment Entries</em> representing environment
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entries for the JNDI naming context associated with a web
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application.</li>
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<li>Zero or more <em>JDBC Resources</em> representing database connection
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pools associated with a web application.</li>
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<li>An optional <em>Loader</em> representing default configuration
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properties for the Loader component of deployed web applications.</li>
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<li>An optional <em>Manager</em> representing default configuration
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properties for the Manager component fo deployed web applications.</li>
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</ul>
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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="Default Deployment Descriptor"><strong>Default Deployment Descriptor</strong></a></font></td></tr><tr><td><blockquote>
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<p>Default web application characteristics are configured in a special
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deployment descriptor named <code>$CATALINA_HOME/conf/web.xml</code>. This
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section describes the configurable components that may be stored there.</p>
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<p><strong>FIXME</strong> - Complete the description of default servlets,
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default mappings, default MIME types, and so on.</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="Engine"><strong>Engine</strong></a></font></td></tr><tr><td><blockquote>
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<p>An <em>Engine</em> is the representation of the entire Catalina
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servlet container, and processes all requests for all of the associated
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virtual hosts and web applications.</p>
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<p>The standard component implementing an <em>Engine</em> is
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<code>org.apache.catalina.core.StandardEngine</code>. It supports the
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following configurable properties:</p>
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<ul>
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<li><code>debug</code> - Debugging detail level. [0]</li>
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<li><code>defaultHost</code> - Name of the <em>Host</em> to which requests
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will be directed if the requested host is unknown. [localhost]</li>
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<li><code>name</code> - Logical name of this engine. [Tomcat Stand-Alone]
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</li>
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</ul>
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<p>Each <em>Engine</em> is owned by a parent <em>Service</em>, and is
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associated with:</p>
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<ul>
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<li>An optional <em>Access Logger</em> that logs all requests processed
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by the entire container.</li>
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<li>A <em>Default Context</em>, representing default properties of a
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<em>Context</em> for automatically deployed applications for all
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associated <em>Hosts</em> (unless overridden by a subordinate
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component).</li>
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<li>One or more <em>Hosts</em> representing individual virtual hosts
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supported by this container.</li>
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<li>A <em>Realm</em> used to provide authentication and access control
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information for all virtual hosts and web applications (unless
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overridden by a subordinate component).</li>
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<li>Zero or more <em>Request Filters</em> used to limit access to the
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entire container based on remote host name or IP address.</li>
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</ul>
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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="Environment Entry"><strong>Environment Entry</strong></a></font></td></tr><tr><td><blockquote>
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<p>An <em>Environment Entry</em> is the representation of a
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<code><env-entry></code> element from a web application deployment
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descriptor. It will cause the creation of a corresponding entry in the
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JNDI naming context provided to the corresponding <em>Context</em>. The
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following configurable properties are supported:</p>
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<ul>
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<li><code>description</code> - Description of this environment entry.</li>
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<li><code>name</code> - Environment entry name (relative to the
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<code>java:comp/env</code> context)</li>
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<li><code>type</code> - Environment entry type (must be one of the fully
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qualified Java classes listed in the servlet spec).</li>
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<li><code>value</code> - Environment entry value (must be convertible from
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String to the specified <code>type</code>.</li>
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</ul>
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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="Host"><strong>Host</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>Host</em> is the representation of an individual virtual host,
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which has a unique set of associated web applications.</p>
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<p>The standard component implementing a <em>Host</em> is
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<code>org.apache.catalina.core.StandardHost</code>. It supports the
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following configurable properties:</p>
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<ul>
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<li><code>aliases</code> - Zero or more DNS names that are also associated
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with this host (for example, a particular host might be named
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<code>www.mycompany.com</code> with an alias <code>company.com</code>).
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</li>
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<li><code>appBase</code> - Absolute or relative (to $CATALINA_HOME) path
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to a directory from which web applications will be automatically
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deployed.</li>
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<li><code>debug</code> - Debugging detail level. [0]</li>
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<li><code>name</code> - DNS Name of the virtual host represented by this
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object.</li>
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<li><code>unpackWARs</code> - Should web application archive files
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deployed by this virtual host be unpacked first? [true]</li>
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</ul>
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<p>Each <em>Host</em> is owned by a parent <em>Engine</em>, and is
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associated with:</p>
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<ul>
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<li>An optional <em>Access Logger</em> that logs all requests processed
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by this virtual host.</li>
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<li>One or more <em>Contexts</em> representing the web applications
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operating on this <em>Host</em>.</li>
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<li>A <em>Default Context</em> representing default <em>Context</em>
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properties for web applications that are automatically deployed
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by this <em>Host</em>.</li>
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<li>A optional <em>Realm</em> used to provide authentication and access
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control information for all web applications associated with this
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virtual host (unless overridden by a subordinate component).</li>
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</ul>
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<p><strong>FIXME</strong> - Should we support configuration of the
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User Web Applications functionality?</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="JDBC Resource"><strong>JDBC Resource</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>JDBC Resources</em> represents a database connection pool (i.e.
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an implementation of <code>javax.sql.DataSource</code> that will be
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configured and made available in the JNDI naming context associated with
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a web application.</p>
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<p><strong>FIXME</strong> - properties of this administered object</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="Loader"><strong>Loader</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>Loader</em> represents a web application class loader that will
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be utilized to provide class loading services for a particular
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<em>Context</em>.</p>
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<p>The standard component implementing a <em>Loader</em> is
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<code>org.apache.catalina.loader.StandardLoader</code>. It supports
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the following configurable properties:</p>
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<ul>
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<li><code>checkInterval</code> - Number of seconds between checks for
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modified classes, if automatic reloading is enabled. [15]</li>
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<li><code>debug</code> - Debugging detail level. [0]</li>
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<li><code>reloadable</code> - Should this class loader check for modified
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classes and initiate automatic reloads? [Set automatically from the
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<code>reloadable</code> property of the corresponding <em>Context</em>]
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</li>
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</ul>
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<p>Each <em>Loader</em> is owned by a parent <em>Context</em>.</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="Manager"><strong>Manager</strong></a></font></td></tr><tr><td><blockquote>
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<p>A <em>Manager</em> represents a session manager that will be associated
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with a particular web application. <strong>FIXME</strong> - Add support
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for advanced session managers and their associated Stores.</p>
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<p>The standard component implementing a <em>Manager</em> is
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<code>org.apache.catalina.session.StandardManager</code>. It supports
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the following configurable properties:</p>
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<ul>
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<li><code>checkInterval</code> - Number of seconds between checks for
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expired sessions. [60]</li>
|
|
<li><code>debug</code> - Debugging detail level. [0]</li>
|
|
<li><code>entropy</code> - String initialization parameter used to increase
|
|
the entropy (initial randomness) of the random number generator used to
|
|
create session identifiers. [Inferred from engine, host, and context]
|
|
</li>
|
|
<li><code>maxActiveSessions</code> - The maximum number of active sessions
|
|
that are allowed, or -1 for no limit. [-1]</li>
|
|
</ul>
|
|
|
|
<p>Each <em>Manager</em> is owned by a parent <em>Context</em>.</p>
|
|
|
|
</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Realm"><strong>Realm</strong></a></font></td></tr><tr><td><blockquote>
|
|
|
|
<p>A <em>Realm</em> represents a "database" of information about authorized
|
|
users, their passwords, and the security roles assigned to them. This will
|
|
be used by the container in the implementation of container-managed security
|
|
in accordance with the Servlet Specification. Several alternative
|
|
implementations are supported.</p>
|
|
|
|
<p><code>org.apache.catalina.realm.MemoryRealm</code> initializes its user
|
|
information from a simple XML file at startup time. If changes are made
|
|
to the information in this file, the corresponding web applications using
|
|
it must be restarted for the changes to take effect. It supports the
|
|
following configurable properties:</p>
|
|
<ul>
|
|
<li><code>debug</code> - Debugging detail level. [0]</li>
|
|
<li><code>pathname</code> - Absolute or relative (to $CATALINA_HOME) path to
|
|
the XML file containing our user information. [conf/tomcat-users.xml]
|
|
</li>
|
|
</ul>
|
|
|
|
<p><code>org.apache.catalina.realm.JDBCRealm</code> uses a relational
|
|
database (accessed via JDBC APIs) to contain the user information. Changes
|
|
in the contents of this database take effect immediately; however, the roles
|
|
assigned to a particular user are calculated only when the user initially
|
|
logs on (and not per request). The following configurable properties
|
|
are supported:</p>
|
|
<ul>
|
|
<li><code>connectionName</code> - Database username to use when establishing
|
|
a JDBC connection.</li>
|
|
<li><code>connectionPassword</code> - Database password to use when
|
|
establishing a JDBC connection.</li>
|
|
<li><code>connectionURL</code> - Connection URL to use when establishing
|
|
a JDBC connection.</li>
|
|
<li><code>debug</code> - Debugging detail level. [0]</li>
|
|
<li><code>digest</code> - Name of the <code>MessageDigest</code> algorithm
|
|
used to encode passwords in the database, or a zero-length string for
|
|
no encoding. [Zero-length String]</li>
|
|
<li><code>driverName</code> - Fully qualified Java class name of the JDBC
|
|
driver to be utilized.</li>
|
|
<li><code>roleNameCol</code> - Name of the column, in the User Roles table,
|
|
which contains the role name.</li>
|
|
<li><code>userCredCol</code> - Name of the column, in the Users table,
|
|
which contains the password (encrypted or unencrypted).</li>
|
|
<li><code>userNameCol</code> - Name of the column, in both the Users and
|
|
User Roles tables, that contains the username.</li>
|
|
<li><code>userRoleTable</code> - Name of the User Roles table, which contains
|
|
one row per security role assigned to a particular user. This table must
|
|
contain the columns specified by the <code>userNameCol</code> and
|
|
<code>roleNameCol</code> properties.</li>
|
|
<li><code>userTable</code> - Name of the Users table, which contains one row
|
|
per authorized user. This table must contain the columns specified by
|
|
the <code>userNameCol</code> and <code>userCredCol</code> properties.
|
|
</li>
|
|
</ul>
|
|
|
|
<p><strong>FIXME</strong> - Should we provide mechanisms to edit the contents
|
|
of a "tomcat-users.xml" file through the admin applications?</p>
|
|
|
|
<p>Each <em>Realm</em> is owned by a parent <em>Engine</em>, <em>Host</em>,
|
|
or <em>Context</em>.</p>
|
|
|
|
</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Request Filter"><strong>Request Filter</strong></a></font></td></tr><tr><td><blockquote>
|
|
|
|
<p><strong>FIXME</strong> - complete this entry</p>
|
|
|
|
</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Server"><strong>Server</strong></a></font></td></tr><tr><td><blockquote>
|
|
|
|
<p><strong>FIXME</strong> - complete this entry</p>
|
|
|
|
</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Service"><strong>Service</strong></a></font></td></tr><tr><td><blockquote>
|
|
|
|
<p><strong>FIXME</strong> - complete this entry</p>
|
|
|
|
</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>
|
|
Copyright © 1999-2006, Apache Software Foundation
|
|
</em></font></div></td></tr></table></body></html> |