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Session (Apache Shiro 1.2.3 API)
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org.apache.shiro.session</FONT>
<BR>
Interface Session</H2>
<DL>
<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../../org/apache/shiro/session/mgt/ValidatingSession.html" title="interface in org.apache.shiro.session.mgt">ValidatingSession</A></DD>
</DL>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/shiro/session/mgt/DelegatingSession.html" title="class in org.apache.shiro.session.mgt">DelegatingSession</A>, <A HREF="../../../../org/apache/shiro/web/session/HttpServletSession.html" title="class in org.apache.shiro.web.session">HttpServletSession</A>, <A HREF="../../../../org/apache/shiro/session/mgt/ImmutableProxiedSession.html" title="class in org.apache.shiro.session.mgt">ImmutableProxiedSession</A>, <A HREF="../../../../org/apache/shiro/session/ProxiedSession.html" title="class in org.apache.shiro.session">ProxiedSession</A>, <A HREF="../../../../org/apache/shiro/session/mgt/SimpleSession.html" title="class in org.apache.shiro.session.mgt">SimpleSession</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public interface <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.37"><B>Session</B></A></DL>
</PRE>
<P>
A <code>Session</code> is a stateful data context associated with a single Subject (user, daemon process,
etc) who interacts with a software system over a period of time.
<p/>
A <code>Session</code> is intended to be managed by the business tier and accessible via other
tiers without being tied to any given client technology. This is a <em>great</em> benefit to Java
systems, since until now, the only viable session mechanisms were the
<code>javax.servlet.http.HttpSession</code> or Stateful Session EJB's, which many times
unnecessarily coupled applications to web or ejb technologies.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>0.1</DD>
</DL>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
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<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getAttribute(java.lang.Object)">getAttribute</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;key)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the object bound to this session identified by the specified key.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A>&lt;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getAttributeKeys()">getAttributeKeys</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the keys of all the attributes stored under this session.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getHost()">getHost</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the host name or IP string of the host that originated this session, or <code>null</code>
if the host is unknown.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getId()">getId</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the unique identifier assigned by the system upon session creation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getLastAccessTime()">getLastAccessTime</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the last time the application received a request or method invocation from the user associated
with this session.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getStartTimestamp()">getStartTimestamp</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the time the session was started; that is, the time the system created the instance.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#getTimeout()">getTimeout</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the time in milliseconds that the session session may remain idle before expiring.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#removeAttribute(java.lang.Object)">removeAttribute</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;key)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes (unbinds) the object bound to this session under the specified <code>key</code> name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#setAttribute(java.lang.Object, java.lang.Object)">setAttribute</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;key,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;value)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Binds the specified <code>value</code> to this session, uniquely identified by the specifed
<code>key</code> name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#setTimeout(long)">setTimeout</A></B>(long&nbsp;maxIdleTimeInMillis)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the time in milliseconds that the session may remain idle before expiring.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#stop()">stop</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Explicitly stops (invalidates) this session and releases all associated resources.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/session/Session.html#touch()">touch</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Explicitly updates the <A HREF="../../../../org/apache/shiro/session/Session.html#getLastAccessTime()"><CODE>lastAccessTime</CODE></A> of this session to the current time when
this method is invoked.</TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
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<A NAME="getId()"><!-- --></A><H3>
getId</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A> <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.49"><B>getId</B></A>()</PRE>
<DL>
<DD>Returns the unique identifier assigned by the system upon session creation.
<p/>
All return values from this method are expected to have proper <code>toString()</code>,
<code>equals()</code>, and <code>hashCode()</code> implementations. Good candidates for such
an identifier are <A HREF="http://java.sun.com/javase/6/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util"><CODE>UUID</CODE></A>s, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang"><CODE>Integer</CODE></A>s, and
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang"><CODE>String</CODE></A>s.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The unique identifier assigned to the session upon creation.</DL>
</DD>
</DL>
<HR>
<A NAME="getStartTimestamp()"><!-- --></A><H3>
getStartTimestamp</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</A> <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.56"><B>getStartTimestamp</B></A>()</PRE>
<DL>
<DD>Returns the time the session was started; that is, the time the system created the instance.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The time the system created the session.</DL>
</DD>
</DL>
<HR>
<A NAME="getLastAccessTime()"><!-- --></A><H3>
getLastAccessTime</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</A> <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.65"><B>getLastAccessTime</B></A>()</PRE>
<DL>
<DD>Returns the last time the application received a request or method invocation from the user associated
with this session. Application calls to this method do not affect this access time.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The time the user last interacted with the system.<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/shiro/session/Session.html#touch()"><CODE>touch()</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="getTimeout()"><!-- --></A><H3>
getTimeout</H3>
<PRE>
long <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.82"><B>getTimeout</B></A>()
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Returns the time in milliseconds that the session session may remain idle before expiring.
<ul>
<li>A negative return value means the session will never expire.</li>
<li>A non-negative return value (0 or greater) means the session expiration will occur if idle for that
length of time.</li>
</ul>
<b>*Note:</b> if you are used to the <code>HttpSession</code>'s <code>getMaxInactiveInterval()</code> method, the scale on
this method is different: Shiro Sessions use millisecond values for timeout whereas
<code>HttpSession.getMaxInactiveInterval</code> uses seconds. Always use millisecond values with Shiro sessions.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the time in milliseconds the session may remain idle before expiring.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if the session has been stopped or expired prior to calling this method.<DT><B>Since:</B></DT>
<DD>0.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="setTimeout(long)"><!-- --></A><H3>
setTimeout</H3>
<PRE>
void <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.100"><B>setTimeout</B></A>(long&nbsp;maxIdleTimeInMillis)
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Sets the time in milliseconds that the session may remain idle before expiring.
<ul>
<li>A negative value means the session will never expire.</li>
<li>A non-negative value (0 or greater) means the session expiration will occur if idle for that
length of time.</li>
</ul>
<p/>
<b>*Note:</b> if you are used to the <code>HttpSession</code>'s <code>getMaxInactiveInterval()</code> method, the scale on
this method is different: Shiro Sessions use millisecond values for timeout whereas
<code>HttpSession.getMaxInactiveInterval</code> uses seconds. Always use millisecond values with Shiro sessions.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>maxIdleTimeInMillis</CODE> - the time in milliseconds that the session may remain idle before expiring.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if the session has been stopped or expired prior to calling this method.<DT><B>Since:</B></DT>
<DD>0.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getHost()"><!-- --></A><H3>
getHost</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.109"><B>getHost</B></A>()</PRE>
<DL>
<DD>Returns the host name or IP string of the host that originated this session, or <code>null</code>
if the host is unknown.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the host name or IP string of the host that originated this session, or <code>null</code>
if the host address is unknown.</DL>
</DD>
</DL>
<HR>
<A NAME="touch()"><!-- --></A><H3>
touch</H3>
<PRE>
void <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.141"><B>touch</B></A>()
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Explicitly updates the <A HREF="../../../../org/apache/shiro/session/Session.html#getLastAccessTime()"><CODE>lastAccessTime</CODE></A> of this session to the current time when
this method is invoked. This method can be used to ensure a session does not time out.
<p/>
Most programmers won't use this method directly and will instead rely on the last access time to be updated
automatically as a result of an incoming web request or remote procedure call/method invocation.
<p/>
However, this method is particularly useful when supporting rich-client applications such as
Java Web Start appp, Java or Flash applets, etc. Although rare, it is possible in a rich-client
environment that a user continuously interacts with the client-side application without a
server-side method call ever being invoked. If this happens over a long enough period of
time, the user's server-side session could time-out. Again, such cases are rare since most
rich-clients frequently require server-side method invocations.
<p/>
In this example though, the user's session might still be considered valid because
the user is actively &quot;using&quot; the application, just not communicating with the
server. But because no server-side method calls are invoked, there is no way for the server
to know if the user is sitting idle or not, so it must assume so to maintain session
integrity. This <code>touch()</code> method could be invoked by the rich-client application code during those
times to ensure that the next time a server-side method is invoked, the invocation will not
throw an <A HREF="../../../../org/apache/shiro/session/ExpiredSessionException.html" title="class in org.apache.shiro.session"><CODE>ExpiredSessionException</CODE></A>. In short terms, it could be used periodically
to ensure a session does not time out.
<p/>
How often this rich-client &quot;maintenance&quot; might occur is entirely dependent upon
the application and would be based on variables such as session timeout configuration,
usage characteristics of the client application, network utilization and application server
performance.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if this session has stopped or expired prior to calling this method.</DL>
</DD>
</DL>
<HR>
<A NAME="stop()"><!-- --></A><H3>
stop</H3>
<PRE>
void <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.160"><B>stop</B></A>()
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Explicitly stops (invalidates) this session and releases all associated resources.
<p/>
If this session has already been authenticated (i.e. the <code>Subject</code> that
owns this session has logged-in), calling this method explicitly might have undesired side effects:
<p/>
It is common for a <code>Subject</code> implementation to retain authentication state in the
<code>Session</code>. If the session
is explicitly stopped by application code by calling this method directly, it could clear out any
authentication state that might exist, thereby effectively &quot;unauthenticating&quot; the <code>Subject</code>.
<p/>
As such, you might consider <A HREF="../../../../org/apache/shiro/subject/Subject.html#logout()"><CODE>logging-out</CODE></A> the 'owning'
<code>Subject</code> instead of manually calling this method, as a log out is expected to stop the
corresponding session automatically, and also allows framework code to execute additional cleanup logic.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if this session has stopped or expired prior to calling this method.</DL>
</DD>
</DL>
<HR>
<A NAME="getAttributeKeys()"><!-- --></A><H3>
getAttributeKeys</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</A>&lt;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&gt; <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.171"><B>getAttributeKeys</B></A>()
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Returns the keys of all the attributes stored under this session. If there are no
attributes, this returns an empty collection.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the keys of all attributes stored under this session, or an empty collection if
there are no session attributes.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if this session has stopped or expired prior to calling this method.<DT><B>Since:</B></DT>
<DD>0.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getAttribute(java.lang.Object)"><!-- --></A><H3>
getAttribute</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.183"><B>getAttribute</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;key)
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Returns the object bound to this session identified by the specified key. If there is no
object bound under the key, <code>null</code> is returned.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the unique name of the object bound to this session
<DT><B>Returns:</B><DD>the object bound under the specified <code>key</code> name or <code>null</code> if there is
no object bound under that name.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if this session has stopped or expired prior to calling
this method.</DL>
</DD>
</DL>
<HR>
<A NAME="setAttribute(java.lang.Object, java.lang.Object)"><!-- --></A><H3>
setAttribute</H3>
<PRE>
void <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.198"><B>setAttribute</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;key,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;value)
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Binds the specified <code>value</code> to this session, uniquely identified by the specifed
<code>key</code> name. If there is already an object bound under the <code>key</code> name, that
existing object will be replaced by the new <code>value</code>.
<p/>
If the <code>value</code> parameter is null, it has the same effect as if
<A HREF="../../../../org/apache/shiro/session/Session.html#removeAttribute(java.lang.Object)"><CODE>removeAttribute</CODE></A> was called.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the name under which the <code>value</code> object will be bound in this session<DD><CODE>value</CODE> - the object to bind in this session.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if this session has stopped or expired prior to calling
this method.</DL>
</DD>
</DL>
<HR>
<A NAME="removeAttribute(java.lang.Object)"><!-- --></A><H3>
removeAttribute</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/session/Session.html#line.209"><B>removeAttribute</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;key)
throws <A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></PRE>
<DL>
<DD>Removes (unbinds) the object bound to this session under the specified <code>key</code> name.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the name uniquely identifying the object to remove
<DT><B>Returns:</B><DD>the object removed or <code>null</code> if there was no object bound under the name
<code>key</code>.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/session/InvalidSessionException.html" title="class in org.apache.shiro.session">InvalidSessionException</A></CODE> - if this session has stopped or expired prior to calling
this method.</DL>
</DD>
</DL>
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