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<h1>StatefulContainer Configuration</h1>
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<p>A StatefulContainer can be declared via xml in the <code>&lt;tomee-home&gt;/conf/tomee.xml</code> file or in a <code>WEB-INF/resources.xml</code> file using a declaration like the following. All properties in the element body are optional.</p>
<pre><code>&lt;Container id=&quot;myStatefulContainer&quot; type=&quot;STATEFUL&quot;&gt;
accessTimeout = 30 seconds
bulkPassivate = 100
cache = org.apache.openejb.core.stateful.SimpleCache
capacity = 1000
frequency = 60
passivator = org.apache.openejb.core.stateful.SimplePassivater
timeOut = 20
&lt;/Container&gt;
</code></pre>
<p>Alternatively, a StatefulContainer can be declared via properties in the <code>&lt;tomee-home&gt;/conf/system.properties</code> file or via Java VirtualMachine <code>-D</code> properties. The properties can also be used when embedding TomEE via the <code>javax.ejb.embeddable.EJBContainer</code> API or <code>InitialContext</code></p>
<pre><code>myStatefulContainer = new://Container?type=STATEFUL
myStatefulContainer.accessTimeout = 30 seconds
myStatefulContainer.bulkPassivate = 100
myStatefulContainer.cache = org.apache.openejb.core.stateful.SimpleCache
myStatefulContainer.capacity = 1000
myStatefulContainer.frequency = 60
myStatefulContainer.passivator = org.apache.openejb.core.stateful.SimplePassivater
myStatefulContainer.timeOut = 20
</code></pre>
<p>Properties and xml can be mixed. Properties will override the xml allowing for easy configuration change without the need for ${} style variable substitution. Properties are not case sensitive. If a property is specified that is not supported by the declared StatefulContainer a warning will be logged. If a StatefulContainer is needed by the application and one is not declared, TomEE will create one dynamically using default settings. Multiple StatefulContainer declarations are allowed.</p>
<h1>Supported Properties</h1>
<table class="mdtable">
<tr>
<th>Property</th>
<th>Type</th>
<th>Default</th>
<th>Description</th>
</tr>
<tr>
<td><a href="#accessTimeout">accessTimeout</a></td>
<td><a href="configuring-durations.html">time</a></td>
<td>30&nbsp;seconds</td>
<td>
Specifies the maximum time an invocation could wait for the
`@Stateful` bean instance to become available before giving up.
</td>
</tr>
<tr>
<td>bulkPassivate</td>
<td>int</td>
<td>100</td>
<td>
Property name that specifies the number of instances to passivate at one time when doing bulk passivation.
</td>
</tr>
<tr>
<td>cache</td>
<td>String</td>
<td>org.apache.openejb.core.stateful.SimpleCache</td>
<td>
The cache is responsible for managing stateful bean instances. The cache can page instances to disk as memory is filled and can destroy abandoned instances. A different cache implementation can be used by setting this property to the fully qualified class name of the Cache implementation.
</td>
</tr>
<tr>
<td>capacity</td>
<td>int</td>
<td>1000</td>
<td>
Specifies the size of the bean pools for this stateful SessionBean container.
</td>
</tr>
<tr>
<td>frequency</td>
<td>int</td>
<td>60</td>
<td>
Specifies the frequency (in seconds) at which the bean cache is checked for idle beans.
</td>
</tr>
<tr>
<td><a href="#passivator">passivator</a></td>
<td>String</td>
<td>org.apache.openejb.core.stateful.SimplePassivater</td>
<td>
The passivator is responsible for writing beans to disk at passivation time. Different passivators can be used by setting this property to the fully qualified class name of the `PassivationStrategy` implementation. The passivator is not responsible for invoking any callbacks or other processing, its only responsibly is to write the bean state to disk.
</td>
</tr>
<tr>
<td><a href="#timeOut">timeOut</a></td>
<td><a href="configuring-durations.html">time</a></td>
<td>20</td>
<td>
Specifies the time a bean can be idle before it is removed by the container.
</td>
</tr>
</table>
<a name="accessTimeout"></a>
<h2>accessTimeout</h2>
<p>Specifies the maximum time an invocation could wait for the<br/><code>@Stateful</code> bean instance to become available before giving up.</p>
<p>After the timeout is reached a <code>javax.ejb.ConcurrentAccessTimeoutException</code> will be thrown.</p>
<p>Usable time units: nanoseconds, microsecons, milliseconds, seconds, minutes, hours, days. Or any combination such as<br/>"1 hour and 27 minutes and 10 seconds"</p>
<p>Any usage of the <code>javax.ejb.AccessTimeout</code> annotation will override this setting for the bean or method where the annotation is used.</p>
<a name="passivator"></a>
<h2>passivator</h2>
<p>The passivator is responsible for writing beans to disk at passivation time. Different passivators can be used by setting this property to the fully qualified class name of the <code>PassivationStrategy</code> implementation. The passivator is not responsible for invoking any callbacks or other processing, its only responsibly is to write the bean state to disk.</p>
<p>Known implementations:</p>
<ul>
<li>org.apache.openejb.core.stateful.RAFPassivater</li>
<li>org.apache.openejb.core.stateful.SimplePassivater</li>
</ul>
<a name="timeOut"></a>
<h2>timeOut</h2>
<p>Specifies the time a bean can be idle before it is removed by the container.</p>
<p>This value is measured in minutes. A value of 5 would result in a time-out of 5 minutes between invocations. A value of -1 would mean no timeout. A value of 0 would mean a bean can be immediately removed by the container.</p>
<p>Any usage of the <code>javax.ejb.StatefulTimeout</code> annotation will override this setting for the bean where the annotation is used.</p>
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