NotSerializableException thrown when PrimeFaces p:fileUpload used in a clustered environment

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: liferay-faces-3.1.3-ga4
• Fix Version/s: liferay-faces-3.0.4-legacy-ga5, liferay-faces-3.0.4-ga5, liferay-faces-3.1.4-ga5, liferay-faces-3.2.4-ga5
• Component/s: Liferay Faces Bridge Impl / Demos / Tests
• Labels: None
• Environment: Liferay Faces Bridge + PrimeFaces + Clustered App Server (like JBoss AS)

The com.liferay.faces.bridge.renderkit.primefaces.FileUploadRendererPrimeFacesImpl class has an inner-class named PrimeFacesFileItem that implements java.io.Serializable. However, the parent FileUploadRendererPrimeFacesImpl class does not implement java.io.Serializable which causes a problem in a clustered environment. Specifically, the instance of PrimeFacesFileItem is set as the "submitted" value on the PrimeFaces p:fileUpload component, and needs to be serialized as part of the javax.faces.ViewState.

The fix for this bug would be to refactor things so that PrimeFacesFileItem is no longer an inner-class.