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<title>Class: DbmStore</title>
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<div id="classHeader">
<table class="header-table">
<tr class="top-aligned-row">
<td><strong>Class</strong></td>
<td class="class-name-in-header">DbmStore</td>
</tr>
<tr class="top-aligned-row">
<td><strong>In:</strong></td>
<td>
<a href="../files/lib/storage/dbmstore_rb.html">
lib/storage/dbmstore.rb
</a>
<br />
</td>
</tr>
<tr class="top-aligned-row">
<td><strong>Parent:</strong></td>
<td>
<a href="Store.html">
Store
</a>
</td>
</tr>
</table>
</div>
<!-- banner header -->
<div id="bodyContent">
<div id="contextContent">
<div id="diagram">
<map id="map" name="map">
<area shape="RECT" coords="35,113,109,161" href="DbmStore.html" alt="DbmStore
">
<area shape="RECT" coords="36,17,108,65" href="Store.html" alt="Store
">
</map>
<img src="../dot/f_43.png" usemap="#map" border=0 alt="TopLevel">
</div>
<div id="description">
<p>
The <a href="SdbmStore.html">SdbmStore</a> class manages access to all
object storage.
</p>
<dl>
<dt><tt>db</tt></dt><dd>is a handle to the database.
</dd>
<dt><tt>dbtop</tt></dt><dd>stores the highest id used in the database.
</dd>
<dt><tt>cache</tt></dt><dd>is a handle to the cache
</dd>
</dl>
</div>
</div>
<div id="method-list">
<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000222">check</a>
<a href="#M000217">close</a>
<a href="#M000220">delete</a>
<a href="#M000226">each</a>
<a href="#M000221">get</a>
<a href="#M000218">inspect</a>
<a href="#M000224">makenoswap</a>
<a href="#M000225">makeswap</a>
<a href="#M000223">mark</a>
<a href="#M000215">new</a>
<a href="#M000219">put</a>
<a href="#M000216">save</a>
<a href="#M000227">stats</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-M000215" class="method-detail">
<a name="M000215"></a>
<div class="method-heading">
<a href="DbmStore.src/M000215.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000215.html');return false;">
<span class="method-name">new</span><span class="method-args">(dbfile)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000222" class="method-detail">
<a name="M000222"></a>
<div class="method-heading">
<a href="DbmStore.src/M000222.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000222.html');return false;">
<span class="method-name">check</span><span class="method-args">(oid)</span>
</a>
</div>
<div class="method-description">
<p>
Check if an object is in the database by its id.
</p>
<dl>
<dt><tt>oid</tt></dt><dd>is the id to use in the search.
</dd>
<dt><tt>return</tt></dt><dd>true or false
</dd>
</dl>
</div>
</div>
<div id="method-M000217" class="method-detail">
<a name="M000217"></a>
<div class="method-heading">
<a href="DbmStore.src/M000217.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000217.html');return false;">
<span class="method-name">close</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
Close the database
</p>
<dl>
<dt><tt>return</tt></dt><dd>Undefined.
</dd>
</dl>
</div>
</div>
<div id="method-M000220" class="method-detail">
<a name="M000220"></a>
<div class="method-heading">
<a href="DbmStore.src/M000220.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000220.html');return false;">
<span class="method-name">delete</span><span class="method-args">(oid)</span>
</a>
</div>
<div class="method-description">
<p>
Deletes an object from the database.
</p>
<dl>
<dt><tt>oid</tt></dt><dd>is the id to to be deleted.
</dd>
<dt><tt>return</tt></dt><dd>Undefined.
</dd>
</dl>
</div>
</div>
<div id="method-M000226" class="method-detail">
<a name="M000226"></a>
<div class="method-heading">
<a href="DbmStore.src/M000226.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000226.html');return false;">
<span class="method-name">each</span><span class="method-args">() {|@cache.get(k)}| ...}</span>
</a>
</div>
<div class="method-description">
<p>
Iterate through all objects This needs to have all the possible keys first.
So we need to fetch them from the cache and from the database and and
produce a list of unique keys.
</p>
<dl>
<dt><tt>yield</tt></dt><dd>Each object in database to block of caller.
</dd>
</dl>
</div>
</div>
<div id="method-M000221" class="method-detail">
<a name="M000221"></a>
<div class="method-heading">
<a href="DbmStore.src/M000221.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000221.html');return false;">
<span class="method-name">get</span><span class="method-args">(oid)</span>
</a>
</div>
<div class="method-description">
<p>
Finds an object in the database by its id.
</p>
<dl>
<dt><tt>oid</tt></dt><dd>is the id to use in the search.
</dd>
<dt><tt>return</tt></dt><dd>Handle to the object or nil.
</dd>
</dl>
</div>
</div>
<div id="method-M000218" class="method-detail">
<a name="M000218"></a>
<div class="method-heading">
<a href="DbmStore.src/M000218.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000218.html');return false;">
<span class="method-name">inspect</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
inspect the store cache (only for caches)
</p>
<dl>
<dt><tt>return</tt></dt><dd>string
</dd>
</dl>
</div>
</div>
<div id="method-M000224" class="method-detail">
<a name="M000224"></a>
<div class="method-heading">
<a href="DbmStore.src/M000224.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000224.html');return false;">
<span class="method-name">makenoswap</span><span class="method-args">(oid)</span>
</a>
</div>
<div class="method-description">
<p>
Marks an object 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-M000225" class="method-detail">
<a name="M000225"></a>
<div class="method-heading">
<a href="DbmStore.src/M000225.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000225.html');return false;">
<span class="method-name">makeswap</span><span class="method-args">(oid)</span>
</a>
</div>
<div class="method-description">
<p>
Marks an object 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-M000223" class="method-detail">
<a name="M000223"></a>
<div class="method-heading">
<a href="DbmStore.src/M000223.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000223.html');return false;">
<span class="method-name">mark</span><span class="method-args">(oid)</span>
</a>
</div>
<div class="method-description">
<p>
Marks an object dirty
</p>
<dl>
<dt><tt>oid</tt></dt><dd>is the id to use in the search.
</dd>
<dt><tt>return</tt></dt><dd>undefined
</dd>
</dl>
</div>
</div>
<div id="method-M000219" class="method-detail">
<a name="M000219"></a>
<div class="method-heading">
<a href="DbmStore.src/M000219.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000219.html');return false;">
<span class="method-name">put</span><span class="method-args">(obj)</span>
</a>
</div>
<div class="method-description">
<p>
Adds a new object to the database.
</p>
<dl>
<dt><tt>obj</tt></dt><dd>is a reference to object to be added
</dd>
<dt><tt>return</tt></dt><dd>Undefined.
</dd>
</dl>
</div>
</div>
<div id="method-M000216" class="method-detail">
<a name="M000216"></a>
<div class="method-heading">
<a href="DbmStore.src/M000216.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000216.html');return false;">
<span class="method-name">save</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
Save the world
</p>
<dl>
<dt><tt>return</tt></dt><dd>Undefined.
</dd>
</dl>
</div>
</div>
<div id="method-M000227" class="method-detail">
<a name="M000227"></a>
<div class="method-heading">
<a href="DbmStore.src/M000227.html" target="Code" class="method-signature"
onclick="popupCode('DbmStore.src/M000227.html');return false;">
<span class="method-name">stats</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
produces a statistical report of the database
</p>
<dl>
<dt><tt>return</tt></dt><dd>a string containing the report
</dd>
</dl>
</div>
</div>
</div>
</div>
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<p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p>
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