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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_06) on Sun Apr 02 20:52:30 EDT 2006 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>StackKeyedObjectPool (Commons Pool 1.3 API)</TITLE><META NAME="keywords" CONTENT="org.apache.commons.pool.impl.StackKeyedObjectPool class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="StackKeyedObjectPool (Commons Pool 1.3 API)";}</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 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/StackKeyedObjectPool.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-all.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="../../../../../org/apache/commons/pool/impl/SoftReferenceObjectPool.html" title="class in org.apache.commons.pool.impl"><B>PREV CLASS</B></A> <A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPoolFactory.html" title="class in org.apache.commons.pool.impl"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html?org/apache/commons/pool/impl/StackKeyedObjectPool.html" target="_top"><B>FRAMES</B></A> <A HREF="StackKeyedObjectPool.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 | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <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">org.apache.commons.pool.impl</FONT><BR>Class StackKeyedObjectPool</H2><PRE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../org/apache/commons/pool/BaseKeyedObjectPool.html" title="class in org.apache.commons.pool">org.apache.commons.pool.BaseKeyedObjectPool</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.commons.pool.impl.StackKeyedObjectPool</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool">KeyedObjectPool</A></DD></DL><HR><DL><DT><PRE>public class <B>StackKeyedObjectPool</B><DT>extends <A HREF="../../../../../org/apache/commons/pool/BaseKeyedObjectPool.html" title="class in org.apache.commons.pool">BaseKeyedObjectPool</A><DT>implements <A HREF="../../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool">KeyedObjectPool</A></DL></PRE><P>A simple, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/Stack.html" title="class or interface in java.util"><CODE>Stack</CODE></A>-based <A HREF="../../../../../org/apache/commons/pool/KeyedObjectPool.html" title="interface in org.apache.commons.pool"><CODE>KeyedObjectPool</CODE></A> implementation. <p> Given a <A HREF="../../../../../org/apache/commons/pool/KeyedPoolableObjectFactory.html" title="interface in org.apache.commons.pool"><CODE>KeyedPoolableObjectFactory</CODE></A>, this class will maintain a simple pool of instances. A finite number of "sleeping" or inactive instances is enforced, but when the pool is empty, new instances are created to support the new load. Hence this class places no limit on the number of "active" instances created by the pool, but is quite useful for re-using <tt>Object</tt>s without introducing artificial limits.<P><P><DL><DT><B>Version:</B></DT> <DD>$Revision: 328937 $ $Date: 2005-10-27 15:23:53 -0400 (Thu, 27 Oct 2005) $</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_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>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/HashMap.html" title="class or interface in java.util">HashMap</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_activeCount">_activeCount</A></B></CODE><BR> Number of active objects borrowed and not yet returned by pool</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../../../org/apache/commons/pool/KeyedPoolableObjectFactory.html" title="interface in org.apache.commons.pool">KeyedPoolableObjectFactory</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_factory">_factory</A></B></CODE><BR> My <A HREF="../../../../../org/apache/commons/pool/KeyedPoolableObjectFactory.html" title="interface in org.apache.commons.pool"><CODE>KeyedPoolableObjectFactory</CODE></A>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_initSleepingCapacity">_initSleepingCapacity</A></B></CODE><BR> The initial capacity of each pool.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_maxSleeping">_maxSleeping</A></B></CODE><BR> The cap on the number of "sleeping" instances in <i>each</i> pool.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/util/HashMap.html" title="class or interface in java.util">HashMap</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_pools">_pools</A></B></CODE><BR> My named-set of pools.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_totActive">_totActive</A></B></CODE><BR> Total number of object borrowed and not yet retuened for all pools</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#_totIdle">_totIdle</A></B></CODE><BR> Total number of objects "sleeping" for all pools</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#DEFAULT_INIT_SLEEPING_CAPACITY">DEFAULT_INIT_SLEEPING_CAPACITY</A></B></CODE><BR> The default initial size of the pool (this specifies the size of the container, it does not cause the pool to be pre-populated.)</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#DEFAULT_MAX_SLEEPING">DEFAULT_MAX_SLEEPING</A></B></CODE><BR> The default cap on the number of "sleeping" instances in the pool.</TD></TR></TABLE> <!-- ======== 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="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#StackKeyedObjectPool()">StackKeyedObjectPool</A></B>()</CODE><BR> Create a new pool using no factory.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#StackKeyedObjectPool(int)">StackKeyedObjectPool</A></B>(int max)</CODE><BR> Create a new pool using no factory.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#StackKeyedObjectPool(int, int)">StackKeyedObjectPool</A></B>(int max, int init)</CODE><BR> Create a new pool using no factory.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../../org/apache/commons/pool/impl/StackKeyedObjectPool.html#StackKeyedObjectPool(org.apache.commons.pool.KeyedPoolableObjectFactory)">StackKeyedObjectPool</A></B>(<A HREF="../../../../../org/apache/commons/pool/KeyedPoolableObjectFactory.html" title="interface in org.apache.commons.pool">KeyedPoolableObjectFactory</A> factory)</CODE>⌨️ 快捷键说明
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