javax.servlet.jsp.jstl.core
Class Config

java.lang.Object
  extended by javax.servlet.jsp.jstl.core.Config

public class Config
extends java.lang.Object

Class supporting access to configuration settings.


Field Summary
static java.lang.String FMT_FALLBACK_LOCALE
          Name of configuration setting for fallback locale
static java.lang.String FMT_LOCALE
          Name of configuration setting for application- (as opposed to browser-) based preferred locale
static java.lang.String FMT_LOCALIZATION_CONTEXT
          Name of configuration setting for i18n localization context
static java.lang.String FMT_TIME_ZONE
          Name of localization setting for time zone
static java.lang.String SQL_DATA_SOURCE
          Name of configuration setting for SQL data source
static java.lang.String SQL_MAX_ROWS
          Name of configuration setting for maximum number of rows to be included in SQL query result
 
Constructor Summary
Config()
           
 
Method Summary
static java.lang.Object find(PageContext pc, java.lang.String name)
          Finds the value associated with a specific configuration setting identified by its context initialization parameter name.
static java.lang.Object get(HttpSession session, java.lang.String name)
          Looks up a configuration variable in the "session" scope.
static java.lang.Object get(PageContext pc, java.lang.String name, int scope)
          Looks up a configuration variable in the given scope.
static java.lang.Object get(ServletContext context, java.lang.String name)
          Looks up a configuration variable in the "application" scope.
static java.lang.Object get(ServletRequest request, java.lang.String name)
          Looks up a configuration variable in the "request" scope.
static void remove(HttpSession session, java.lang.String name)
          Removes a configuration variable from the "session" scope.
static void remove(PageContext pc, java.lang.String name, int scope)
          Removes a configuration variable from the given scope.
static void remove(ServletContext context, java.lang.String name)
          Removes a configuration variable from the "application" scope.
static void remove(ServletRequest request, java.lang.String name)
          Removes a configuration variable from the "request" scope.
static void set(HttpSession session, java.lang.String name, java.lang.Object value)
          Sets the value of a configuration variable in the "session" scope.
static void set(PageContext pc, java.lang.String name, java.lang.Object value, int scope)
          Sets the value of a configuration variable in the given scope.
static void set(ServletContext context, java.lang.String name, java.lang.Object value)
          Sets the value of a configuration variable in the "application" scope.
static void set(ServletRequest request, java.lang.String name, java.lang.Object value)
          Sets the value of a configuration variable in the "request" scope.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

FMT_LOCALE

public static final java.lang.String FMT_LOCALE
Name of configuration setting for application- (as opposed to browser-) based preferred locale

See Also:
Constant Field Values

FMT_FALLBACK_LOCALE

public static final java.lang.String FMT_FALLBACK_LOCALE
Name of configuration setting for fallback locale

See Also:
Constant Field Values

FMT_LOCALIZATION_CONTEXT

public static final java.lang.String FMT_LOCALIZATION_CONTEXT
Name of configuration setting for i18n localization context

See Also:
Constant Field Values

FMT_TIME_ZONE

public static final java.lang.String FMT_TIME_ZONE
Name of localization setting for time zone

See Also:
Constant Field Values

SQL_DATA_SOURCE

public static final java.lang.String SQL_DATA_SOURCE
Name of configuration setting for SQL data source

See Also:
Constant Field Values

SQL_MAX_ROWS

public static final java.lang.String SQL_MAX_ROWS
Name of configuration setting for maximum number of rows to be included in SQL query result

See Also:
Constant Field Values
Constructor Detail

Config

public Config()
Method Detail

get

public static java.lang.Object get(PageContext pc,
                                   java.lang.String name,
                                   int scope)
Looks up a configuration variable in the given scope.

The lookup of configuration variables is performed as if each scope had its own name space, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
pc - Page context in which the configuration variable is to be looked up
name - Configuration variable name
scope - Scope in which the configuration variable is to be looked up
Returns:
The java.lang.Object associated with the configuration variable, or null if it is not defined.

get

public static java.lang.Object get(ServletRequest request,
                                   java.lang.String name)
Looks up a configuration variable in the "request" scope.

The lookup of configuration variables is performed as if each scope had its own name space, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
request - Request object in which the configuration variable is to be looked up
name - Configuration variable name
Returns:
The java.lang.Object associated with the configuration variable, or null if it is not defined.

get

public static java.lang.Object get(HttpSession session,
                                   java.lang.String name)
Looks up a configuration variable in the "session" scope.

The lookup of configuration variables is performed as if each scope had its own name space, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
session - Session object in which the configuration variable is to be looked up
name - Configuration variable name
Returns:
The java.lang.Object associated with the configuration variable, or null if it is not defined, if session is null, or if the session is invalidated.

get

public static java.lang.Object get(ServletContext context,
                                   java.lang.String name)
Looks up a configuration variable in the "application" scope.

The lookup of configuration variables is performed as if each scope had its own name space, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
context - Servlet context in which the configuration variable is to be looked up
name - Configuration variable name
Returns:
The java.lang.Object associated with the configuration variable, or null if it is not defined.

set

public static void set(PageContext pc,
                       java.lang.String name,
                       java.lang.Object value,
                       int scope)
Sets the value of a configuration variable in the given scope.

Setting the value of a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
pc - Page context in which the configuration variable is to be set
name - Configuration variable name
value - Configuration variable value
scope - Scope in which the configuration variable is to be set

set

public static void set(ServletRequest request,
                       java.lang.String name,
                       java.lang.Object value)
Sets the value of a configuration variable in the "request" scope.

Setting the value of a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
request - Request object in which the configuration variable is to be set
name - Configuration variable name
value - Configuration variable value

set

public static void set(HttpSession session,
                       java.lang.String name,
                       java.lang.Object value)
Sets the value of a configuration variable in the "session" scope.

Setting the value of a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
session - Session object in which the configuration variable is to be set
name - Configuration variable name
value - Configuration variable value

set

public static void set(ServletContext context,
                       java.lang.String name,
                       java.lang.Object value)
Sets the value of a configuration variable in the "application" scope.

Setting the value of a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not replace one stored in a different scope.

Parameters:
context - Servlet context in which the configuration variable is to be set
name - Configuration variable name
value - Configuration variable value

remove

public static void remove(PageContext pc,
                          java.lang.String name,
                          int scope)
Removes a configuration variable from the given scope.

Removing a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not impact one stored in a different scope.

Parameters:
pc - Page context from which the configuration variable is to be removed
name - Configuration variable name
scope - Scope from which the configuration variable is to be removed

remove

public static void remove(ServletRequest request,
                          java.lang.String name)
Removes a configuration variable from the "request" scope.

Removing a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not impact one stored in a different scope.

Parameters:
request - Request object from which the configuration variable is to be removed
name - Configuration variable name

remove

public static void remove(HttpSession session,
                          java.lang.String name)
Removes a configuration variable from the "session" scope.

Removing a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not impact one stored in a different scope.

Parameters:
session - Session object from which the configuration variable is to be removed
name - Configuration variable name

remove

public static void remove(ServletContext context,
                          java.lang.String name)
Removes a configuration variable from the "application" scope.

Removing a configuration variable is performed as if each scope had its own namespace, that is, the same configuration variable name in one scope does not impact one stored in a different scope.

Parameters:
context - Servlet context from which the configuration variable is to be removed
name - Configuration variable name

find

public static java.lang.Object find(PageContext pc,
                                    java.lang.String name)
Finds the value associated with a specific configuration setting identified by its context initialization parameter name.

For each of the JSP scopes (page, request, session, application), get the value of the configuration variable identified by name using method get(). Return as soon as a non-null value is found. If no value is found, get the value of the context initialization parameter identified by name.

Parameters:
pc - Page context in which the configuration setting is to be searched
name - Context initialization parameter name of the configuration setting
Returns:
The java.lang.Object associated with the configuration setting identified by name, or null if it is not defined.


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Generated on 10-February-2011 12:41


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