I am using ArcGIS RT 10.1 in Java to work with a customer geodatabase. After receiving an update of the data, I started seeing Automation execptions on any attempt at opening a feature class: AutomationException: 0x80041352 - Unable to create object class extension COM component [MyClassName] in 'Esri GeoDatabase' at com.esri.arcgis.geodatabase.Workspace.openFeatureClass(Unknown Source) I finally traced this down to the data having come from the ArcFM environment (apparently there are extension classes associated that we do not have access to). After a bit more digging I found a way to clear the extensions by doing this for every feature class: IFeatureWorkspaceSchemaEdit edit = (IFeatureWorkspaceSchemaEdit) featureWorkspace; edit.alterClassExtensionCLSID(feature_class_name,null,null); UID id = new UID(); id.setValue(com.esri.arcgis.geodatabase.Feature.class); edit.alterInstanceCLSID(feature_class_name,id); This gets me about 98% of the way there. I can open the feature class, traverse the network, get my hands on shapes, etc. However, now I cannot get from a network EID directly back to a shape. Any attempt at calling: iGeometricNetwork.getGeometryForEdgeEID(eid); or iGeometricNetwork.getGeometryForJunctionEID(eid); throws this exception: AutomationException: 0x80004005 - Unspecified error Clearly there is a connection broken between the geometric network and the feature class. I'm guessing I need to be doing something slightly different in the schema edit, but the documentation is not forthcoming on the details. Can anyone give me the magic incantation?

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Need workaround for ArcFM extension

StevenHirsch

I am using ArcGIS RT 10.1 in Java to work with a customer geodatabase. After receiving an update of the data, I started seeing Automation execptions on any attempt at opening a feature class:

AutomationException: 0x80041352 - Unable to create object class extension COM component [MyClassName] in 'Esri GeoDatabase' at

com.esri.arcgis.geodatabase.Workspace.openFeatureClass(Unknown Source)

I finally traced this down to the data having come from the ArcFM environment (apparently there are extension classes associated that we do not have access to). After a bit more digging I found a way to clear the extensions by doing this for every feature class:

	IFeatureWorkspaceSchemaEdit edit = (IFeatureWorkspaceSchemaEdit) featureWorkspace;
	edit.alterClassExtensionCLSID(feature_class_name,null,null);

	UID id = new UID();
	id.setValue(com.esri.arcgis.geodatabase.Feature.class);
	edit.alterInstanceCLSID(feature_class_name,id);

This gets me about 98% of the way there. I can open the feature class, traverse the network, get my hands on shapes, etc. However, now I cannot get from a network EID directly back to a shape. Any attempt at calling:

iGeometricNetwork.getGeometryForEdgeEID(eid);

iGeometricNetwork.getGeometryForJunctionEID(eid);

throws this exception:

AutomationException: 0x80004005 - Unspecified error

Clearly there is a connection broken between the geometric network and the feature class. I'm guessing I need to be doing something slightly different in the schema edit, but the documentation is not forthcoming on the details. Can anyone give me the magic incantation?

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ChrisKushnir

... so I think your on the right track.

1) Get the existing CLSID for the class

2) Null out the class extension.

3) Map the old ArcFM CLSID to the new ArcGIS one:

mmGeoDatabase.MMArcFMObject -> esriGeoDatabase.Object

[basically: mmGeoDatabase.MMArcFM* -> esriGeoDatabase.*]

mmGeoDatabase.MMArcFMAnnotationFeature Class -> esriGeoDatabase.Feature

mmGeoDatabase.MMArcFMDimensionFeature Class -> esriGeoDatabase.???

All comments

StevenHirsch

In theory the ArcFM tool would be a viable option. However, my employer forbids developers from clicking through license agreements with explicit legal clearance. As a practical matter I need to stick with the tools I have or (as was suggested) have the customer do the conversion.

I really appreciate all the advice, and good catch on the Fault Indicator feature class! That slipped right by me. I thought it was referring to something in the ESRI library internals (yesterday was a long day).

ChrisKushnir

Forgot all about that, good call.

DavidHoy

you can get a free install from Schneider called the ArcFM Object Reader

If this is installed on the same machine as your code, you will find it "stubs out" the calls to the feature class extensions and your code may well work as you expect.

ArcFM Object Reader (32-bit and 64-bit) 10.2 | exchange

you will need to know which version of ArcFM is being used with your features to get the right Object reader.

ChrisKushnir

... so I think your on the right track.

1) Get the existing CLSID for the class

2) Null out the class extension.

3) Map the old ArcFM CLSID to the new ArcGIS one:

mmGeoDatabase.MMArcFMObject -> esriGeoDatabase.Object

[basically: mmGeoDatabase.MMArcFM* -> esriGeoDatabase.*]

mmGeoDatabase.MMArcFMAnnotationFeature Class -> esriGeoDatabase.Feature

mmGeoDatabase.MMArcFMDimensionFeature Class -> esriGeoDatabase.???

ChrisKushnir

IClass Interface

EXTCLSID - the extension class ID

Extension - the instance (returns object, need to cast to appropriate interface)

ExtensionProperties - properties to alter the extension behaviour, specific to the instance

IClassSchemaEdit and IClassSchemaEdit2 - alter the class extension for a given table.

I think your original question was clear. The concern is you've done the obvious thing, change the class extension, and are still having issues. That's non-standard enough that I'm not sure anyone would have tried that before.

If you look at the MM class extensions you se they do have edge and junction specific ones which suggests there may be deeper ties than just the class extension:

So, you've nulled out the class extension and changes the class type from the ArcFM one to the appropriate ArcGIS one. Did you set it to the correct ArcGIS one i.e. Object, Feature, Edge, or Junction ? From your original post it looks like you set to Feature when you may need to set to either Simple or ComplexEdgeFeature.

StevenHirsch

Bump again. I suspect I need to focus this question a bit better. Let me try again:

If I've opened a feature class that participates in a geometry network, how can I obtain the extension CLSID for that class? I've come across the 'IObjectClassDescription' interface that appears capable of telling me what the extension class id is, but cannot find any way to obtain an instance that implements this interface. Opening the feature class gets me an IFeatureClassProxy and I can find no clear path from there to an ability to query the extension class information (this is an all-too-familiar problem with the Java API, but that's a whole separate frustration...)

My reasoning relative to the original problem: If I can find out what extension class is used to manage objects in a conventional geometric network, I'm hoping I can force the features from the ArcFM data set back to something that ArcObjects can properly resolve.

StevenHirsch

Bump... Is there really no one on this forum who can help? I think if someone can provide me with the ESRI default values for ClassExtensionCLSID and InstanceCLSID I'd be set. Unfortunately, even after considerable digging through the documentation I cannot find a method to query either of those attributes.

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