se.kmr.scam.client.http.util
Class Context

java.lang.Object
  se.kmr.scam.client.http.util.Context

public class Context

extends Object

Provides access to the different context available in the HTTP interface.

Version:

$Revision: 1.8 $

Author:

Jöran

Created:

den 21 augusti 2002

Field Summary

static String	APPLICATION Identifier for application scope
static String	REQUEST Identifer for request scope
static String	SESSION Identifier for session scope

Constructor Summary

Context()

Method Summary

static Object	getAttribute(String name, HttpServletRequest request) Gets a named attribute from context scope.
static Object	getAttribute(String name, HttpServletRequest request, String scope) Gets a named attribute from in a defined context scope.
static Collection	listAttributes(String name, HttpServletRequest request) List a named attribute.
static Collection	listAttributes(String name, HttpServletRequest request, String scope) List a named attribute in a defined context scope.
static void	setAttribute(String name, Object attribute, HttpServletRequest request, String scope) Binds an object to name in designated context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

REQUEST

public static final String REQUEST

Identifer for request scope

See Also:

Constant Field Values

SESSION

public static final String SESSION

Identifier for session scope

See Also:

Constant Field Values

APPLICATION

public static final String APPLICATION

Identifier for application scope

See Also:

Constant Field Values

Constructor Detail

Context

public Context()

Method Detail

getAttribute

public static Object getAttribute(String name,
                                  HttpServletRequest request)

Gets a named attribute from context scope. Request scope is searched first, then session scope and last application scope.

Parameters:

name - Name of attribute

request - Request object

Returns:

The attribute value if the name is bound in any context, otherwise null. Note: NEVER a Collection

listAttributes

public static Collection listAttributes(String name,
                                        HttpServletRequest request)

List a named attribute.

Parameters:

name - Name of attribute

request - Request object

Returns:

Collection of values (never null)

See Also:

getAttribute(String, HttpServletRequest)

getAttribute

public static Object getAttribute(String name,
                                  HttpServletRequest request,
                                  String scope)

Gets a named attribute from in a defined context scope.

Parameters:

name - Name of attribute

request - Requset object

scope - Find attribute in this context scope

Returns:

The attribute value if the name is bound in context scope, otherwise null. Note: NEVER a Collection

listAttributes

public static Collection listAttributes(String name,
                                        HttpServletRequest request,
                                        String scope)

List a named attribute in a defined context scope.

Parameters:

name - Name of attribute

request - Request object

Returns:

Collection of values (never null)

See Also:

getAttribute(String, HttpServletRequest, String)

setAttribute

public static void setAttribute(String name,
                                Object attribute,
                                HttpServletRequest request,
                                String scope)

Binds an object to name in designated context.

Parameters:

name - Bind the object to this name.

attribute - Object to bind.

request - Bind object using this request object.

scope - Defines in wich context the object is bound