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    <blockquote> <p><em>It seems that it is a new instance of component invoked when decode is trigered and components are not present.</em></p> </blockquote> <p>That's correct. Component instances are not stored in the view state. Instead, the component's state is stored in the view state. The component's state can be managed by the helper class <a href="http://docs.oracle.com/javaee/6/api/javax/faces/component/StateHelper.html" rel="nofollow noreferrer"><code>StateHelper</code></a> which is available by <a href="http://docs.oracle.com/javaee/6/api/javax/faces/component/UIComponent.html#getStateHelper%28%29" rel="nofollow noreferrer"><code>UIComponent#getStateHelper()</code></a>.</p> <p>So, during encode do:</p> <pre><code>// ... getStateHelper().put("someKey", someKey); </code></pre> <p>And during decode do:</p> <pre><code>SomeKey someKey = (SomeKey) getStateHelper().eval("someKey"); // ... </code></pre> <h3>See also:</h3> <ul> <li><a href="https://stackoverflow.com/questions/9405278/how-to-save-state-when-extending-uicomponentbase">How to save state when extending UIComponentBase</a></li> <li><a href="https://stackoverflow.com/questions/13015942/jsf-composite-component-weird-behavior-when-trying-to-save-state">JSF composite component - weird behavior when trying to save state</a></li> <li><a href="https://stackoverflow.com/questions/11866981/jsf-2-custom-components-having-expression-language-for-attribute-value-dont-tri">JSF 2 Custom components having Expression Language for attribute value don&#39;t trigger the attribute setter</a></li> </ul>
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    1. POJSF component created in encodeBegin not visible in decode
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    1. COCan you explain why values retrieve from getStateHelper().eval("someKey"); are always null in decode?
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    2. COThis should not happen. Is the component declared in the view or are you manually creating it? The latter would explain it.
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    3. COI am creating it manually in my custom component.
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