ServerDescribeSchema miss extension class if it's not in the first schema

[ChristineBao]

Report from Autodesk QA:

1. Connect to one Oracle provider, assuming it has the following schema:
   SchemaA
   

FeatureClassA1
FeatureClassA2

SchemaB

FeatureClassB1

2. Connect to one SDF provider.
   
3. Create a join in Oracle connection, set primary class to be SchemaB:FeatureClassB1[[BR]]
4. Execute GetClasses in Oracle connection, the extension join class SchemaB:FeatureClassB1Extend does not show.
   
5. If create join in the first schema of Oracle, for example SchemaA:FeatureClass1Extend, the extension class will show in GetClasses command.

[ChristineBao]

This defect is caused by a bug in describe schema:

ServerDescribeSchema.cpp

                    // get the class collection for this schema
                    FdoPtr<FdoClassCollection> fcc = ffs->GetClasses();
                    FdoInt32 classCount = fcc->GetCount();

                    for (int nClassIndex = 0; nClassIndex < classCount; nClassIndex++)
                    {
                        originalClassDef = fcc->GetItem(nClassIndex);

                        STRING className = (wchar_t*)originalClassDef->GetName();
                        if (className == primClassName)
                        {
                            // get the class definition
                            extClassDefinition = MgServerFeatureUtil::GetMgClassDefinition(originalClassDef, serialize);
                            break;
                        }
                    }

                    break;

As you can see, if the first schema cannot find the matching extension class, it break and will not continue to search.

[ChristineBao]

A fix is attached ​http://trac.osgeo.org/mapguide/attachment/ticket/1894/Fix1894.patch.

[ChristineBao]

Fixed in r6346.

[ChristineBao]

Integrate to Jedi2.4 in r6347.