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UnavailableException (Java Portlet Specification V2.0 1.0 API)
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javax.portlet</FONT>
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Class UnavailableException</H2>
<PRE>
java.lang.Object
<IMG SRC="../../resources/inherit.gif" ALT="extended by ">java.lang.Throwable
<IMG SRC="../../resources/inherit.gif" ALT="extended by ">java.lang.Exception
<IMG SRC="../../resources/inherit.gif" ALT="extended by "><A HREF="../../javax/portlet/PortletException.html" title="class in javax.portlet">javax.portlet.PortletException</A>
<IMG SRC="../../resources/inherit.gif" ALT="extended by "><B>javax.portlet.UnavailableException</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>UnavailableException</B><DT>extends <A HREF="../../javax/portlet/PortletException.html" title="class in javax.portlet">PortletException</A></DL>
</PRE>
<P>
The portlet should throw the <CODE>UnavailableException</CODE> when
the portlet is either temporarily or permanently unavailable to handle requests.
<P>
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../serialized-form.html#javax.portlet.UnavailableException">Serialized Form</A></DL>
<HR>
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<TD><CODE><B><A HREF="../../javax/portlet/UnavailableException.html#UnavailableException(java.lang.String)">UnavailableException</A></B>(java.lang.String text)</CODE>
<BR>
Constructs a new exception with a descriptive
message indicating that the portlet is permanently
unavailable.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../javax/portlet/UnavailableException.html#UnavailableException(java.lang.String, int)">UnavailableException</A></B>(java.lang.String text,
int seconds)</CODE>
<BR>
Constructs a new exception with a descriptive message
indicating that the portlet is temporarily unavailable
and giving an estimate of how long it will be unavailable.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/portlet/UnavailableException.html#getUnavailableSeconds()">getUnavailableSeconds</A></B>()</CODE>
<BR>
Returns the time in seconds for which the portlet can be expected to
be unavailable.</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../javax/portlet/UnavailableException.html#isPermanent()">isPermanent</A></B>()</CODE>
<BR>
Returns a <code>boolean</code> indicating
whether the portlet is permanently unavailable.</TD>
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<TD><CODE>fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString</CODE></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD>
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<A NAME="UnavailableException(java.lang.String)"><!-- --></A><H3>
UnavailableException</H3>
<PRE>
public <B>UnavailableException</B>(java.lang.String text)</PRE>
<DL>
<DD>Constructs a new exception with a descriptive
message indicating that the portlet is permanently
unavailable.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>text</CODE> - a <code>String</code> specifying the
descriptive message</DL>
</DL>
<HR>
<A NAME="UnavailableException(java.lang.String, int)"><!-- --></A><H3>
UnavailableException</H3>
<PRE>
public <B>UnavailableException</B>(java.lang.String text,
int seconds)</PRE>
<DL>
<DD>Constructs a new exception with a descriptive message
indicating that the portlet is temporarily unavailable
and giving an estimate of how long it will be unavailable.
<p>In some cases, the portlet cannot make an estimate. For
example, the portlet might know that a server it needs is
not running, but it might not be able to report how long it will take
to be restored to functionality. This can be indicated with
a negative or zero value for the <code>seconds</code> argument.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>text</CODE> - a <code>String</code> specifying the
descriptive message. This message can be written
to a log file or displayed for the user.<DD><CODE>seconds</CODE> - an integer specifying the number of seconds
for which the portlet expects to be unavailable; if
this is zero or negative, it indicates that the portlet
cannot make an estimate.</DL>
</DL>
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<A NAME="isPermanent()"><!-- --></A><H3>
isPermanent</H3>
<PRE>
public boolean <B>isPermanent</B>()</PRE>
<DL>
<DD>Returns a <code>boolean</code> indicating
whether the portlet is permanently unavailable.
If so, something is wrong with the portlet, and the
system administrator must take some corrective action.
<P>
<DD><DL>
<DT><B>Returns:</B><DD><code>true</code> if the portlet is
permanently unavailable; <code>false</code>
if the portlet is temporarily
unavailable.</DL>
</DD>
</DL>
<HR>
<A NAME="getUnavailableSeconds()"><!-- --></A><H3>
getUnavailableSeconds</H3>
<PRE>
public int <B>getUnavailableSeconds</B>()</PRE>
<DL>
<DD>Returns the time in seconds for which the portlet can be expected to
be unavailable.
<p>
If the portlet is called again while it is still unavailable, it
indicates the same time estimate. No effort is
made to correct for the time elapsed since the exception was
first reported.
<p>
If this method returns zero or a negative number, the portlet
is permanently unavailable or cannot provide an estimate of
how long it will be unavailable.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>an integer specifying the number of seconds
the portlet will be temporarily unavailable,
or zero or a negative number if the portlet is permanently
unavailable or cannot make an estimate.</DL>
</DD>
</DL>
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