📄 buffercache.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Fri Dec 06 19:57:09 CET 2002 --><TITLE>jakarta-turbine-2 2.2 API: Class BufferCache</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <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/BufferCache.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/turbine/util/BrowserDetector.html"><B>PREV CLASS</B></A> <A HREF="../../../../org/apache/turbine/util/ContentURI.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="BufferCache.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | 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><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.apache.turbine.util</FONT><BR>Class BufferCache</H2><PRE>java.lang.Object | +--java.util.Dictionary | +--java.util.Hashtable | +--<A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html">org.apache.turbine.util.SequencedHashtable</A> | +--<B>org.apache.turbine.util.BufferCache</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable, java.util.Map, java.io.Serializable</DD></DL><HR><DL><DT>public class <B>BufferCache</B><DT>extends <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html">SequencedHashtable</A></DL><P>A fixed length object cache implementing the LRU algorithm. Convenient for buffering recently used objects.<P><DL><DT><B>Version: </B><DD>$Id: BufferCache.java,v 1.2 2002/07/11 16:53:21 mpoeschl Exp $</DD><DT><B>Author: </B><DD><a href="mailto:dlr@collab.net">Daniel Rall</a></DD><DT><B>See Also: </B><DD><A HREF="../../../../serialized-form.html#org.apache.turbine.util.BufferCache">Serialized Form</A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><A NAME="inner_classes_inherited_from_class_java.util.Map"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Inner classes inherited from class java.util.Map</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>java.util.Map.Entry</CODE></TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/apache/turbine/util/BufferCache.html#BufferCache()">BufferCache</A></B>()</CODE><BR> Creates a new instance with default storage buffer pre-allocated.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/apache/turbine/util/BufferCache.html#BufferCache(int)">BufferCache</A></B>(int maxSize)</CODE><BR> Creates a new instance with the specified storage buffer pre-allocated.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/util/BufferCache.html#get(java.lang.Object)">get</A></B>(java.lang.Object key)</CODE><BR> Retrieves the value associated with the provided key, freshening the sequence of the key as well.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/apache/turbine/util/BufferCache.html#put(java.lang.Object, java.lang.Object)">put</A></B>(java.lang.Object key, java.lang.Object value)</CODE><BR> Stores the provided key/value pair, freshening its list index if the specified key already exists.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_org.apache.turbine.util.SequencedHashtable"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class org.apache.turbine.util.<A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html">SequencedHashtable</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#clear()">clear</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#clone()">clone</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#freshenSequence(java.lang.Object, java.lang.Object)">freshenSequence</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#get(int)">get</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#getValue(int)">getValue</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#indexOf(java.lang.Object)">indexOf</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#iterator()">iterator</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#lastIndexOf(java.lang.Object)">lastIndexOf</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#putAll(java.util.Map)">putAll</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#remove(int)">remove</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#remove(java.lang.Object)">remove</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#sequence()">sequence</A>, <A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#values()">values</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.util.Hashtable"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.util.Hashtable</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>contains, containsKey, containsValue, elements, entrySet, equals, hashCode, isEmpty, keys, keySet, rehash, size, toString</CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="BufferCache()"><!-- --></A><H3>BufferCache</H3><PRE>public <B>BufferCache</B>()</PRE><DL><DD>Creates a new instance with default storage buffer pre-allocated.</DL><HR><A NAME="BufferCache(int)"><!-- --></A><H3>BufferCache</H3><PRE>public <B>BufferCache</B>(int maxSize)</PRE><DL><DD>Creates a new instance with the specified storage buffer pre-allocated.<DD><DL><DT><B>Parameters:</B><DD><CODE>maxSize</CODE> - The maximum size of the cache.</DL></DD></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="put(java.lang.Object, java.lang.Object)"><!-- --></A><H3>put</H3><PRE>public java.lang.Object <B>put</B>(java.lang.Object key, java.lang.Object value)</PRE><DL><DD>Stores the provided key/value pair, freshening its list index if the specified key already exists.<DD><DL><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html#put(java.lang.Object, java.lang.Object)">put</A></CODE> in class <CODE><A HREF="../../../../org/apache/turbine/util/SequencedHashtable.html">SequencedHashtable</A></CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>key</CODE> - The key to the provided value.<DD><CODE>value</CODE> - The value to store.<DT><B>Returns:</B><DD>The previous value for the specified key, or <code>null</code> if none.</DL></DD></DL><HR><A NAME="get(java.lang.Object)"><!-- --></A><H3>get</H3><PRE>public java.lang.Object <B>get</B>(java.lang.Object key)</PRE><DL><DD>Retrieves the value associated with the provided key, freshening the sequence of the key as well.<DD><DL><DT><B>Overrides:</B><DD><CODE>get</CODE> in class <CODE>java.util.Hashtable</CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>key</CODE> - The key whose value to retrieve.<DT><B>Returns:</B><DD>The keyed value.</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <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/BufferCache.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/turbine/util/BrowserDetector.html"><B>PREV CLASS</B></A> <A HREF="../../../../org/apache/turbine/util/ContentURI.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="BufferCache.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | 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><!-- =========== END OF NAVBAR =========== --><HR>Copyright © 2000-2002 Apache Software Foundation. All Rights Reserved.</BODY></HTML>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -