Algorithm of creating a layer model

Semantic first block in the applied scheme is formed by a method of elements generation by using semantics descriptions in the classifier. Elements of the second block represent sets of semantics, are characteristic for layers. Each separate element is a basic set of the common semantics for all objects and a set of semantics typical for a concrete layer. The basic structure has mandatory for all layers the attribute ObjectKey, which stores information about the type (key) of the object, and a set of common semantics for all objects.

Models of layers, are formed depending on classifier structure. The program goes over all admissible semantics of a layer. For example, for the layer "HYDROGRAPHY" from the standard classifier topo100t.rsc the model will be formed containing base structure and three semantics with numbers 3, 5, 32.

In case of using the mode «include statistics» and positive execution of the program all information about the initial classifier and the resulting scheme are saved in the LOG. The file name corresponds to a name of the resulting scheme with the added extension log. For example, if the operator has determined that the resulting file will have the name - Topo100t.xsd, then the statistics will be stored in the same directory as the created scheme as Topo100t.xsd.LOG

Structure of the statistics file:

CLASSIFIER: E:\RELEASE\100t05gopen.rsc - filename  of the classifier

 Creation date: 7/27/2011 14:10:50

 File size    : 728924

SCHEME          : E:\RELEASE\100t05gopen.xsd        - filename of the scheme

 Creation date   : 31.07.2011 17:25:56

 File size   : 99374

 Semantics in total : 131

 Layers in total    : 28

  of them        

   created    : 2                - number of created layers 1:1

     - Settlements

     - Hydrography

   Renamed  : 1        - number of renamed layers*

     - PlanHeightBase in Geodesy

   missed   : 1        - number of missed layers

     - SYSTEM

   synonyms   : 2        - number of layers-synonyms

    - SettlementBlock

    - HydrographyRel

 STRUCTURE OF LAYERS :

 layer        : SYSTEM is ignored

 layer        : Settlements is created with the scheme

   semantics : ObjName

   semantics : AdministratUnit

   semantics : ObjState

 layer        : Hydrography is created with the scheme

   semantics : ObjName

   semantics : ObjState

   semantics : Purpose

   semantics : Period

 layer        : HydrographyRel is transferred into Hydrography

 layer        : SettlementBlock is transferred into Settlements

 layer        : PlanHeightBase is renamed into Geodesy

   semantics : ObjName

   semantics : GeodeticPos

   semantics : MarkNumber

   semantics : AccuracyClass

   semantics : PositionType

*Renamed layer - if the classifier has a layer which is not present in the scheme, but it is available in the table of synonyms - such layer is renamed.

The example, there is available the description of a layer and synonyms:

 <segment name = "Geodesy">

   <add key = "PlanHeightBase" />

 </segment>

In the classifier there is layer PlanHeightBase but there is no layer Geodesy. In this case, the program renames the layer PlanHeightBase into Geodesy and transfers all information.