Error Consuming a Custom Web Service Based on Data Control from WebCenter Portal as a Task Flow: java.lang.NullPointerException
(Doc ID 1998193.1)
Last updated on OCTOBER 04, 2023
Applies to:
Oracle WebCenter Portal - Version 11.1.1.8.0 to 12.2.1.4.0Information in this document applies to any platform.
Symptoms
When attempting to consume a custom web service based on a data control from WebCenter Portal as a Task Flow, the task flow will not work and the following error is shown in the Portal diagnostic log.
ERROR : 12c Release
[WC_Portal] [ERROR] [] [oracle.adf.model.adapter] [tid: [ACTIVE].ExecuteThread: '46' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: <USERID>] [ecid: <ECID>,0] [APP: webcenter] [partition-name: DOMAIN] [tenant-name: GLOBAL] [DSID: <DSID>] Exception: [[
oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: oracle.adf.model.adapter.AdapterException, msg=DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:903)
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:202)
at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:277)
at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:1437)
...
Caused by: oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:901)
... 264 more
Caused by: java.lang.NullPointerException
at oracle.adfinternal.model.adapter.webservice.WSModel.getServices(WSModel.java:249)
at oracle.adfinternal.model.adapter.webservice.WSModel.getServiceOperations(WSModel.java:341)
at oracle.adfinternal.model.adapter.webservice.WSModel.getOperation(WSModel.java:466)
at oracle.adfinternal.model.adapter.webservice.WSDefinition.loadSavedOperations(WSDefinition.java:2025)
at oracle.adfinternal.model.adapter.webservice.WSDefinition.loadDCOperations(WSDefinition.java:1974)
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:852)
... 264 more
## Detail 0 ##
oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:901)
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:202)
at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:277)
at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:1437)
at oracle.adf.model.dcframe.DataControlFrameImpl.doFindDataControl(DataControlFrameImpl.java:1917)
...
oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: oracle.adf.model.adapter.AdapterException, msg=DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:903)
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:202)
at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:277)
at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:1437)
...
Caused by: oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:901)
... 264 more
Caused by: java.lang.NullPointerException
at oracle.adfinternal.model.adapter.webservice.WSModel.getServices(WSModel.java:249)
at oracle.adfinternal.model.adapter.webservice.WSModel.getServiceOperations(WSModel.java:341)
at oracle.adfinternal.model.adapter.webservice.WSModel.getOperation(WSModel.java:466)
at oracle.adfinternal.model.adapter.webservice.WSDefinition.loadSavedOperations(WSDefinition.java:2025)
at oracle.adfinternal.model.adapter.webservice.WSDefinition.loadDCOperations(WSDefinition.java:1974)
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:852)
... 264 more
## Detail 0 ##
oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.createDataControl(WSDefinition.java:901)
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:202)
at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:277)
at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:1437)
at oracle.adf.model.dcframe.DataControlFrameImpl.doFindDataControl(DataControlFrameImpl.java:1917)
...
ERROR : 11g Release
[WC_Spaces] [ERROR] [] [oracle.adf.model.adapter] [tid: [ACTIVE].ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: <USERID>] [ecid: <ECID>,0] [APP: webcenter#11.1.1.4.0] [DSID: <DSID>] Exception: [[
oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.loadFromMetadata(WSDefinition.java:771)
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:218)
...
Caused by: java.lang.NullPointerException
at oracle.adfinternal.model.adapter.webservice.WSModel.getServices(WSModel.java:213)
at oracle.adfinternal.model.adapter.webservice.WSModel.getServiceOperations(WSModel.java:305)
at oracle.adfinternal.model.adapter.webservice.WSModel.getOperation(WSModel.java:430)
...
[WC_Spaces] [WARNING] [ADF_FACES-00009] [oracle.adf.view.rich.component.fragment.UIXRegion] [tid: [ACTIVE].ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: <USERID>] [ecid: <ECID>,0] [APP: webcenter#11.1.1.4.0] [DSID: <DSID>] Error processing viewId: /currency-converter-tf/currencyConverter URI: /currencyConverter.jsff actual-URI: /currencyConverter.jsff.[[
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: oracle.adf.model.adapter.AdapterException, msg=DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:239)
at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:167)
at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:1128)
...
oracle.adf.model.adapter.AdapterException: DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adfinternal.model.adapter.webservice.WSDefinition.loadFromMetadata(WSDefinition.java:771)
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:218)
...
Caused by: java.lang.NullPointerException
at oracle.adfinternal.model.adapter.webservice.WSModel.getServices(WSModel.java:213)
at oracle.adfinternal.model.adapter.webservice.WSModel.getServiceOperations(WSModel.java:305)
at oracle.adfinternal.model.adapter.webservice.WSModel.getOperation(WSModel.java:430)
...
[WC_Spaces] [WARNING] [ADF_FACES-00009] [oracle.adf.view.rich.component.fragment.UIXRegion] [tid: [ACTIVE].ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: <USERID>] [ecid: <ECID>,0] [APP: webcenter#11.1.1.4.0] [DSID: <DSID>] Error processing viewId: /currency-converter-tf/currencyConverter URI: /currencyConverter.jsff actual-URI: /currencyConverter.jsff.[[
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: oracle.adf.model.adapter.AdapterException, msg=DCA-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:239)
at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:167)
at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:1128)
...
STEPS
The issue can be reproduced at will with the following steps:
- Create a Custom Data Control for a WebService.
- Create a Task Flow for the Data Control.
- Confirm the Task Flow runs fine from standalone ADF application.
- Deploy the custom task flow to WC_Spaces managed server as shared library.
- Register the Task Flow with WebCenter Portal as per the following doc:
Development Lifecycle for Task Flows in Oracle WebCenter Portal 11gR1 version 11.1.1.8.0
- Add the task flow to a custom catalog.
- Create a portal and set it to use the custom catalog.
- Add the task flow to a page.
Here you can see the task flow but all actions on the page are frozen.
The spaces diagnostic log will show the java.lang.NullPointerException error.
Cause
To view full details, sign in with your My Oracle Support account. |
|
Don't have a My Oracle Support account? Click to get started! |