## Object Hierarchy

        GObject
            GdaBlobOp
            GdaClient
            GdaColumn
            GdaColumnIndex
            GdaConnection
            GdaConnectionEvent
            GdaObject
                GdaHandlerTime
                GdaHandlerBoolean
                GdaHandlerString
                GdaHandlerNumerical
                GdaHandlerBin
                GdaHandlerType
                GdaDataModelRow
                    GdaDataModelArray
                        GdaDataModelFilterSQL
                    GdaDataModelHash
                GdaDataModelImport
                GdaParameterList
                    GdaDataModelIter
                GdaDataModelQuery
                GdaDataAccessWrapper
                GdaDataProxy
                GdaDictAggregate
                GdaDictConstraint
                GdaDictDatabase
                GdaDictField
                GdaDictFunction
                GdaDictTable
                GdaDictType
                GdaGraphviz
                GdaObjectRef
                GdaParameter
                GdaQueryObject
                    GdaQuery
                    GdaQueryCondition
                    GdaQueryField
                        GdaQueryFieldAgg
                        GdaQueryFieldAll
                        GdaQueryFieldField
                        GdaQueryFieldFunc
                        GdaQueryFieldValue
                    GdaQueryJoin
                    GdaQueryTarget
                GdaGraph
                    GdaGraphQuery
                GdaGraphItem
            GdaDict
            GdaServerOperation
            GdaServerProvider
            GdaThreader
            GdaTransactionStatus
        GInterface
            GdaDataHandler
            GdaDataModel
            GdaXmlStorage
            GdaReferer
            GdaEntityField
            GdaRenderer
            GdaEntity