<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Class: CacheManager</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <link rel="stylesheet" href=".././rdoc-style.css" type="text/css" media="screen" /> <script type="text/javascript"> // <![CDATA[ function popupCode( url ) { window.open(url, "Code", "resizable=yes,scrollbars=yes,toolbar=no,status=no,height=150,width=400") } function toggleCode( id ) { if ( document.getElementById ) elem = document.getElementById( id ); else if ( document.all ) elem = eval( "document.all." + id ); else return false; elemStyle = elem.style; if ( elemStyle.display != "block" ) { elemStyle.display = "block" } else { elemStyle.display = "none" } return true; } // Make codeblocks hidden by default document.writeln( "<style type=\"text/css\">div.method-source-code { display: none }</style>" ) // ]]> </script> </head> <body> <div id="classHeader"> <table class="header-table"> <tr class="top-aligned-row"> <td><strong>Class</strong></td> <td class="class-name-in-header">CacheManager</td> </tr> <tr class="top-aligned-row"> <td><strong>In:</strong></td> <td> <a href="../files/lib/storage/cache_rb.html"> lib/storage/cache.rb </a> <br /> </td> </tr> <tr class="top-aligned-row"> <td><strong>Parent:</strong></td> <td> Object </td> </tr> </table> </div> <!-- banner header --> <div id="bodyContent"> <div id="contextContent"> <div id="diagram"> <map id="map" name="map"> <area shape="RECT" coords="7,17,92,65" href="CacheStats.html" alt="CacheStats "> <area shape="RECT" coords="116,17,217,65" href="CacheManager.html" alt="CacheManager "> <area shape="RECT" coords="241,17,327,65" href="CacheEntry.html" alt="CacheEntry "> </map> <img src="../dot/f_41.png" usemap="#map" border=0 alt="TopLevel"> </div> <div id="description"> <p> This class manages the cache. It is initialized by the <a href="Store.html">Store</a> and front ends the database behind the <a href="Store.html">Store</a>. </p> </div> </div> <div id="method-list"> <h3 class="section-bar">Methods</h3> <div class="name-list"> <a href="#M000113">delete</a> <a href="#M000111">get</a> <a href="#M000110">hash</a> <a href="#M000109">inspect</a> <a href="#M000119">keys</a> <a href="#M000117">makenoswap</a> <a href="#M000118">makeswap</a> <a href="#M000114">mark</a> <a href="#M000108">new</a> <a href="#M000112">put</a> <a href="#M000120">stats</a> <a href="#M000115">sync</a> <a href="#M000116">sync_chain</a> </div> </div> </div> <!-- if includes --> <div id="section"> <!-- if method_list --> <div id="methods"> <h3 class="section-bar">Public Class methods</h3> <div id="method-M000108" class="method-detail"> <a name="M000108"></a> <div class="method-heading"> <a href="CacheManager.src/M000108.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000108.html');return false;"> <span class="method-name">new</span><span class="method-args">(db)</span> </a> </div> <div class="method-description"> </div> </div> <h3 class="section-bar">Public Instance methods</h3> <div id="method-M000113" class="method-detail"> <a name="M000113"></a> <div class="method-heading"> <a href="CacheManager.src/M000113.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000113.html');return false;"> <span class="method-name">delete</span><span class="method-args">(oid)</span> </a> </div> <div class="method-description"> <p> delete an object </p> </div> </div> <div id="method-M000111" class="method-detail"> <a name="M000111"></a> <div class="method-heading"> <a href="CacheManager.src/M000111.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000111.html');return false;"> <span class="method-name">get</span><span class="method-args">(oid)</span> </a> </div> <div class="method-description"> <p> gets an object </p> <dl> <dt><tt>oid</tt></dt><dd>- integer object id to retrieve </dd> <dt><tt>return</tt></dt><dd>- a reference to the object or nil if none exists </dd> </dl> </div> </div> <div id="method-M000110" class="method-detail"> <a name="M000110"></a> <div class="method-heading"> <a href="CacheManager.src/M000110.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000110.html');return false;"> <span class="method-name">hash</span><span class="method-args">(oid)</span> </a> </div> <div class="method-description"> <p> Our simple hash algoritm. Our database keys are sequentially assigned integers, so… I don’t know what would be better. </p> </div> </div> <div id="method-M000109" class="method-detail"> <a name="M000109"></a> <div class="method-heading"> <a href="CacheManager.src/M000109.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000109.html');return false;"> <span class="method-name">inspect</span><span class="method-args">()</span> </a> </div> <div class="method-description"> <p> report on the cache map see cmd_dumpcache </p> </div> </div> <div id="method-M000119" class="method-detail"> <a name="M000119"></a> <div class="method-heading"> <a href="CacheManager.src/M000119.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000119.html');return false;"> <span class="method-name">keys</span><span class="method-args">()</span> </a> </div> <div class="method-description"> <p> This is provided to traverse the entire object chain. This thrashes the cache violently. See <a href="Store.html#M000026">Store#each</a>. One needs to question the design of routines that use <a href="Store.html#M000026">Store#each</a> above. </p> </div> </div> <div id="method-M000117" class="method-detail"> <a name="M000117"></a> <div class="method-heading"> <a href="CacheManager.src/M000117.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000117.html');return false;"> <span class="method-name">makenoswap</span><span class="method-args">(oid)</span> </a> </div> <div class="method-description"> <p> Mark an object in the cache as nonswappable </p> <dl> <dt><tt>oid</tt></dt><dd>is the object id </dd> <dt><tt>return</tt></dt><dd>undefined </dd> </dl> </div> </div> <div id="method-M000118" class="method-detail"> <a name="M000118"></a> <div class="method-heading"> <a href="CacheManager.src/M000118.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000118.html');return false;"> <span class="method-name">makeswap</span><span class="method-args">(oid)</span> </a> </div> <div class="method-description"> <p> Mark an object in the cache as swappable </p> <dl> <dt><tt>oid</tt></dt><dd>is the object id </dd> <dt><tt>return</tt></dt><dd>undefined </dd> </dl> </div> </div> <div id="method-M000114" class="method-detail"> <a name="M000114"></a> <div class="method-heading"> <a href="CacheManager.src/M000114.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000114.html');return false;"> <span class="method-name">mark</span><span class="method-args">(oid)</span> </a> </div> <div class="method-description"> <p> deliberately mark an object in the cache as dirty see properties. </p> </div> </div> <div id="method-M000112" class="method-detail"> <a name="M000112"></a> <div class="method-heading"> <a href="CacheManager.src/M000112.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000112.html');return false;"> <span class="method-name">put</span><span class="method-args">(obj)</span> </a> </div> <div class="method-description"> <p> puts an object </p> <dl> <dt><tt>obj</tt></dt><dd>- The integer object id to retrieve </dd> <dt><tt>return</tt></dt><dd>- undefined </dd> </dl> </div> </div> <div id="method-M000120" class="method-detail"> <a name="M000120"></a> <div class="method-heading"> <a href="CacheManager.src/M000120.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000120.html');return false;"> <span class="method-name">stats</span><span class="method-args">()</span> </a> </div> <div class="method-description"> <p> produce a report - see cmd_stats </p> </div> </div> <div id="method-M000115" class="method-detail"> <a name="M000115"></a> <div class="method-heading"> <a href="CacheManager.src/M000115.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000115.html');return false;"> <span class="method-name">sync</span><span class="method-args">()</span> </a> </div> <div class="method-description"> <p> syncronize the entire cache with the database called by save. </p> </div> </div> <div id="method-M000116" class="method-detail"> <a name="M000116"></a> <div class="method-heading"> <a href="CacheManager.src/M000116.html" target="Code" class="method-signature" onclick="popupCode('CacheManager.src/M000116.html');return false;"> <span class="method-name">sync_chain</span><span class="method-args">(i)</span> </a> </div> <div class="method-description"> <p> syncronize a specific list chain not yet called but included for possible performance enhancement </p> </div> </div> </div> </div> <div id="validator-badges"> <p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p> </div> </body> </html>