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java.lang.Objectorg.springframework.web.context.request.AbstractRequestAttributes
org.springframework.web.context.request.ServletRequestAttributes
public class ServletRequestAttributes
Servlet-based implementation of the RequestAttributes
interface.
Accesses objects from servlet request and HTTP session scope, with no distinction between "session" and "global session".
ServletRequest.getAttribute(java.lang.String)
,
HttpSession.getAttribute(java.lang.String)
Field Summary | |
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static String |
DESTRUCTION_CALLBACK_NAME_PREFIX
Constant identifying the String prefixed to the name of a
destruction callback when it is stored in a HttpSession . |
Fields inherited from class org.springframework.web.context.request.AbstractRequestAttributes |
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requestDestructionCallbacks |
Fields inherited from interface org.springframework.web.context.request.RequestAttributes |
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SCOPE_GLOBAL_SESSION, SCOPE_REQUEST, SCOPE_SESSION |
Constructor Summary | |
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ServletRequestAttributes(HttpServletRequest request)
Create a new ServletRequestAttributes instance for the given request. |
Method Summary | |
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Object |
getAttribute(String name,
int scope)
Return the value for the scoped attribute of the given name, if any. |
protected HttpServletRequest |
getRequest()
Exposes the HttpServletRequest that we're wrapping. |
protected HttpSession |
getSession(boolean allowCreate)
Exposes the HttpSession that we're wrapping. |
String |
getSessionId()
Return an id for the current underlying session. |
Object |
getSessionMutex()
Expose the best available mutex for the underlying session: that is, an object to synchronize on for the underlying session. |
void |
registerDestructionCallback(String name,
Runnable callback,
int scope)
Register a callback to be executed at destruction of the specified attribute in the given scope. |
void |
removeAttribute(String name,
int scope)
Remove the scoped attribute of the given name, if it exists. |
void |
setAttribute(String name,
Object value,
int scope)
Set the value for the scoped attribute of the given name. |
protected void |
updateAccessedSessionAttributes()
Update all accessed session attributes through session.setAttribute
calls, explicitly indicating to the container that they might have been modified. |
Methods inherited from class org.springframework.web.context.request.AbstractRequestAttributes |
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registerRequestDestructionCallback, removeRequestDestructionCallback, requestCompleted |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final String DESTRUCTION_CALLBACK_NAME_PREFIX
String
prefixed to the name of a
destruction callback when it is stored in a HttpSession
.
Constructor Detail |
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public ServletRequestAttributes(HttpServletRequest request)
request
- current HTTP requestMethod Detail |
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protected final HttpServletRequest getRequest()
HttpServletRequest
that we're wrapping.
protected final HttpSession getSession(boolean allowCreate)
HttpSession
that we're wrapping.
allowCreate
- whether to allow creation of a new session if none exists yetpublic Object getAttribute(String name, int scope)
RequestAttributes
name
- the name of the attributescope
- the scope identifier
null
if not foundpublic void setAttribute(String name, Object value, int scope)
RequestAttributes
name
- the name of the attributevalue
- the value for the attributescope
- the scope identifierpublic void removeAttribute(String name, int scope)
RequestAttributes
name
- the name of the attributescope
- the scope identifierpublic void registerDestructionCallback(String name, Runnable callback, int scope)
RequestAttributes
Implementations should do their best to execute the callback at the appropriate time: that is, at request completion or session termination, respectively. If such a callback is not supported by the underlying runtime environment, the callback must be ignored and a corresponding warning should be logged.
Note that destruction usually corresponds to destruction of the
entire scope, not to the individual attribute having been removed.
If an attribute gets removed via this facade's
RequestAttributes.removeAttribute(String, int)
method, any registered
destruction callback should be disabled as well (assuming that the
removed object will be reused or manually destroyed).
name
- the name of the attribute to register the callback forcallback
- the destruction callback to be executedscope
- the scope identifierpublic String getSessionId()
RequestAttributes
public Object getSessionMutex()
RequestAttributes
protected void updateAccessedSessionAttributes()
session.setAttribute
calls, explicitly indicating to the container that they might have been modified.
updateAccessedSessionAttributes
in class AbstractRequestAttributes
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