EL configuration variables

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[[Category:Configuration]]
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{{Cleanup}} [[Category:Configuration]]
  
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= Globally Available Variables =
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Resin configuration can use JSP EL variables in the resin.xml and resin-web.xml.
  
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{|
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= EL Variables =
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!Variable||Meaning
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|-
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||__FILE__||The current configuration file
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|}
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= Globally Available Functions =
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; getenv
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: System environment variables
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; host
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: Information from the virtual host
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; java
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: Contains JVM variables
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; resin
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: Contains top-level Resin configuration like ${resin.home}
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; system
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: Values from the Java System.getProperties
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; webApp
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: Information about the web-app
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; ${__DIR__}
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: The directory of the current configuration file.
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; ${__FILE__}
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: The current configuration file.
  
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{|
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== getenv ==
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!Function||Description
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|-
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||class_exists||True if the specified class exists in the environment
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|-
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||jndi||Looks up a resource in the JNDI environment
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|-
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||jndi_lookup||Synonym for jndi
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|}
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= <resin> environment Variables =
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The ${getenv} variable returns system environment variables.
  
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{|
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  <mypkg:MyBean xmlns:mypkg="urn:java:com.mycom.mypkg">
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!Variable||Description
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    <myValue>${getenv["MY_VAR"]}</myValue>
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|-
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  </mypkg:MyBean>
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||java||Information about the JDK version (3.0.17)
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|-
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||resin||The Resin variable object (see com.caucho.server.resin.ResinServer$Var)
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|-
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||resinHome||The Resin binary and library home
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|-
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||serverRoot||The root of the deployment/application data (defaults to to resinHome)
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|}
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The java object has the following methods
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== host ==
  
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{|
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The ${host} variable returns virtual host values
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!Method||Description
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|-
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||isJava5()||True if the JDK supports JDK 1.5 or later (3.0.17)
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|}
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The resin object has the following methods
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; ${host.name}
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: The name used for deployment in a hosts/ directory
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; ${host.hostName}
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: The canonical DNS host name
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; ${host.url}
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: The URL for the canonical host name
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; ${host.regexp[0]}
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: For host-regexp matching, the n-th regexp expression
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; ${host.root}
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: The virtual host's rootDirectory
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; ${host.warDirectory}
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: The webapps/ directory in the virtual host
  
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{|
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== java ==
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!Method||Description
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|-
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||id||returns the value of -server on the command line (3.0.15)
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|-
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||home||returns [-resin-home]
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|-
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||root||returns the deployment root directory, [-server-root] (3.0.15)
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|-
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||rootDir||return the deployment root directory (same as resin.root)
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|-
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||isProfessional()||returns true for a valid Resin professional installation
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|}
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= <server> environment Variables =
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; ${java.home}
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: The [[Path]] to the JDK's home directory
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; ${java.properties['user.name']}
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: Any System.getProperty("foo") value
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; ${java.userName}
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: The value of System.getProperty("user.name")
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; ${java.version}
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: The value of System.getProperty("java.version")
  
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{|
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== resin ==
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!Variable||Description
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|-
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||server||information about the server environment
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|}
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The server variable has a number of fields/methods available (defined in com.caucho.server.resin.ServerController$Var)
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; ${resin.address}
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: The address of the <server> configuration
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; ${resin.conf}
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: The path to the Resin configuration file
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; ${resin.home}
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: The Resin installation directory
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; ${resin.port}
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: The port of the <server> configuration
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; ${resin.root}
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: The Resin content root directory
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; ${resin.serverId}
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: The unique server identifier specified by -server id
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; ${resin.version}
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: The Resin version
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; ${resin.versionDate}
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: The Resin build date
  
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{|
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== system ==
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!Attribute||Description
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|-
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||id||The value of -server id from the command line
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|-
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||root||Returns the server's data directory, [-server-root] (3.0.15)
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|-
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||rootDir||The server's root directory (same as server.root)
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|}
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= <host> environment variables =
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The Java System.getProperties values, which are set by the -Dfoo=xxx JVM arguments or set by the JVM itself.
  
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{|
 
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!Variable||Description
 
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|-
 
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||host||information about the host environment
 
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|}
 
  
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{|
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  <mypkg:MyBean xmlns:mypkg="urn:java:com.mycom.mypkg">
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!Method||Description
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    <myValue>${system["user.name"]}</myValue>
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|-
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  </mypkg:MyBean>
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||root||the host's root directory (3.0.15)
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|-
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||rootDir||the host's root directory (same as host.root)
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|-
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||hostName||the host's canonical name
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|-
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||URL||the host's URL
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|-
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||regexp||any regular expression values for a host-regexp
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|}
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= <web-app> environment variables =
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== webApp ==
  
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{|
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Variables for a deployed web-app
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!Variable||Description
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|-
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||webapp||information about the web-app environment
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|}
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{|
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; ${webApp.id}
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!Method||Description
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: The unique deployment identifier, like production/webapps/default/ROOT
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|-
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; ${webApp.name}
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||id||the web-app's unique name
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: The name used for the war file like ROOT
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|-
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; ${webApp.root}
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||name||the name of the war file (minus the .war)
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: The root directory for the expanded war
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|-
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; ${webApp.contextPath}
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||root||the root of the web-app's directory
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: The web-app's context path as returned by ServletRequest
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|-
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; ${webApp.regexp[0]}
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||rootDir||the root of the web-app's directory (same as webapp.root)
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: Values for webapp-regexp matches
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|-
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; ${webApp.version}
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||contextPath||the web-app's context path
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: The webapp version, if any
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|-
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||regexp||any regexp values from a url-regexp
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|}
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Latest revision as of 21:17, 1 December 2011

40px-Edit-clear.png This article requires cleanup and may refer to a legacy version of Resin.

Please visit http://www.caucho.com/documentation/ for the most up-to-date documentation.

Resin configuration can use JSP EL variables in the resin.xml and resin-web.xml.

Contents

EL Variables

getenv
System environment variables
host
Information from the virtual host
java
Contains JVM variables
resin
Contains top-level Resin configuration like ${resin.home}
system
Values from the Java System.getProperties
webApp
Information about the web-app
${__DIR__}
The directory of the current configuration file.
${__FILE__}
The current configuration file.

getenv

The ${getenv} variable returns system environment variables. 

 <mypkg:MyBean xmlns:mypkg="urn:java:com.mycom.mypkg">
   <myValue>${getenv["MY_VAR"]}</myValue>
 </mypkg:MyBean>

host

The ${host} variable returns virtual host values

${host.name}
The name used for deployment in a hosts/ directory
${host.hostName}
The canonical DNS host name
${host.url}
The URL for the canonical host name
${host.regexp[0]}
For host-regexp matching, the n-th regexp expression
${host.root}
The virtual host's rootDirectory
${host.warDirectory}
The webapps/ directory in the virtual host

java

${java.home}
The Path to the JDK's home directory
${java.properties['user.name']}
Any System.getProperty("foo") value
${java.userName}
The value of System.getProperty("user.name")
${java.version}
The value of System.getProperty("java.version")

resin

${resin.address}
The address of the <server> configuration
${resin.conf}
The path to the Resin configuration file
${resin.home}
The Resin installation directory
${resin.port}
The port of the <server> configuration
${resin.root}
The Resin content root directory
${resin.serverId}
The unique server identifier specified by -server id
${resin.version}
The Resin version
${resin.versionDate}
The Resin build date

system

The Java System.getProperties values, which are set by the -Dfoo=xxx JVM arguments or set by the JVM itself. 


 <mypkg:MyBean xmlns:mypkg="urn:java:com.mycom.mypkg">
   <myValue>${system["user.name"]}</myValue>
 </mypkg:MyBean>

webApp

Variables for a deployed web-app

${webApp.id}
The unique deployment identifier, like production/webapps/default/ROOT
${webApp.name}
The name used for the war file like ROOT
${webApp.root}
The root directory for the expanded war
${webApp.contextPath}
The web-app's context path as returned by ServletRequest
${webApp.regexp[0]}
Values for webapp-regexp matches
${webApp.version}
The webapp version, if any
Retrieved from "http://wiki3.caucho.com/index.php?title=EL_configuration_variables&oldid=4218"
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