MdsMetadataResourceProvider Error in ADF 11.1.1.7

If you have migrated ADF application to ADF 11.1.1.7 version recently, you may see error in the log related to the internal MetadataResourceXmlImpl class usage. Runtime behaviour will not be affected, but there could be many redundant error messages in the log, like this one:


Error UNEXPECTED_CLIENT_OBJECT_TYPE found oracle.adf.controller.internal.metadata.xml.MetadataResourceXmlImpl, points to the ADF internal class usage, instead of public. You must look through the source code and you should find illegal internal imports for MetadataService and TaskFlowDefinition classes. Typically ADF developer would use such classes in the previous ADF versions to check if specific ADF TF exists:


In ADF 11.1.1.7 you can use public classes for MetadataService and TaskFlowDefinition, instead of private. To fix the error, you only need to change class import:


Here you can download sample application with correct API usage - ADFMetadataInternalApp.zip.