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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0) on Wed Feb 06 17:53:07 CET 2008 --><TITLE>UnavailableException</TITLE><META NAME="keywords" CONTENT="javax.portlet.UnavailableException class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="UnavailableException";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD 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CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/portlet/StateAwareResponse.html" title="interface in javax.portlet"><B>PREV CLASS</B></A> <A HREF="../../javax/portlet/ValidatorException.html" title="class in javax.portlet"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?javax/portlet/UnavailableException.html" target="_top"><B>FRAMES</B></A> <A HREF="UnavailableException.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.portlet</FONT><BR>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><P><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><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></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><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></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><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></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Throwable"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Throwable</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString</CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TH></TR></TABLE><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><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><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><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/UnavailableException.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/portlet/StateAwareResponse.html" title="interface in javax.portlet"><B>PREV CLASS</B></A> <A HREF="../../javax/portlet/ValidatorException.html" title="class in javax.portlet"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html?javax/portlet/UnavailableException.html" target="_top"><B>FRAMES</B></A> <A HREF="UnavailableException.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR></BODY></HTML>⌨️ 快捷键说明
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