CN105447039A - Geological information system adapter - Google Patents
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- CN105447039A CN105447039A CN201410437907.4A CN201410437907A CN105447039A CN 105447039 A CN105447039 A CN 105447039A CN 201410437907 A CN201410437907 A CN 201410437907A CN 105447039 A CN105447039 A CN 105447039A
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Abstract
The embodiment of the invention discloses a geological information system adapter. The geological information system adapter comprises a first layer C/S structure at an adapter client side, and a second layer C/S structure consisting of an adapter platform server, an application adapter class server, an RDBMS server, a GIS server and an RS server, wherein the adapter client side sends information to the adapter platform server and the application adapter class server, the application adapter class server retrieves a model meeting requirements of the information from a model library, and sends function requirements of the model on data to the adapter platform server, and the adapter platform server converts the function requirements to basic operations which can be implemented through the RS server, the GIS server and the RDBMS server, sends the basic operations to the RS server, the GIS server and the RDBMS server, and returns operation results to the application adapter class server to enable the results to be returned to the adapter client side.
Description
Technical field
The present invention relates to a kind of Geographic Information System (GSI) field, particularly relate to the adapter platform based on metadata and the model adaptation applicator platform based on relational database management system, and carry out visual modeling with the method for auxiliary space decision-making on the basis of system global structure and adapter platform, model adaptation applicator platform.
Background technology
In recent years, along with the extensive of GIS application establishes large quantities of Geographic Information System.Along with development and the actual needs of network technology, the system requirements integrated operation of these dispersions, to realize information sharing, improves operational efficiency.Geographic Information System map adapter can be divided into two levels, and one is that between geography information, the concept hierarchy of mutual relationship is integrated, lays particular emphasis on the spatial analysis of geography information; Another is that between different pieces of information and model, the hierarchy of skill of organization and management is integrated.In the E-Government field based on GIS, the concept of Infrastructure or adapter platform is widely used, and adapter platform is considered to realize that government information is integrated, the set of essential information process needed for function i ntegration and the public service that communicates.
In the evolution of Geographic Information System, can find out that being integrated in of Geographic Information System technically can be divided into following several form:
(1) between the disparate modules of same GIS software systems or adopt the text exchanging form of Import/Export between different system.This is the most also a kind of mode that efficiency is minimum, and it is applicable to data between any system and model integrated;
(2) Modelandstructure of Data that large scale business GIS software is as consistent in ARC/INFO has, provides secondary development language, forms Software Development Platform.Make between disparate modules, to adopt scale-of-two to carry out exchanges data (as Arcedit and Arcplot), also can adopt in this way (as ARC/INFO and ERDAS) between the different GIS software systems with substantial connection.User is except on the basis of operating system, Application and Development model is called by host system in such a mode, other all operation can only be based upon on this software platform basis, and different software platforms generally cannot directly carry out data sharing and have complementary functions;
(3) form of application programming interfaces (ApplicationProgrammingIntererface) is adopted to carry out integrated.As ARC/INFO provides the communication of RPC Interface realization client and server, provide that ARC/INFO and ARCVIEW's is integrated.User can follow RPC specification Application and Development module to realize the system integration simultaneously.The distributed computing environment (DistributedComputationEnvironment) that ESRI proposes also is the thought based on API;
(4) automation function (Automation) of object connection and embedding (ObjectLinkingandEmbedding) provides the interoperability function between object, the GIS software of some exploitations recently, the Surfer that MaplnfoProfessional and GoldenSoft company as Mapinfo company develops, all provide OLEAutomation, user can using the system of this software as an object embedding oneself;
(5) object-relational database technology (ObjectRelationalDatabaseManagementSystem of getting up of latest developments, be called for short ORDBMS) spatial data is directly integrated into into Database Systems as a kind of data type, user can on this platform direct management vector spatial data, remote sensing image data and conventional relationship data, the API of this database platform can be utilized to develop GIS application system.
In the various forms of above Geographic Information System adapter, all there is following deficiency:
(1) the distributivity feature of geographical information collection and application determines the distributivity of Geographic Information System, and above various Geographic Information System adapters are all difficult to adapt to this distributivity;
(2) geography information relates to different time, space and attribute, and above various Geographic Information System adapters cannot go to process different time, space and attribute;
(3) geoanalysis model and multiple geodata contact, and have complicated connection in series-parallel relation between different model, above various Geographic Information System adapters can not process connection in series-parallel relation between different models.
Summary of the invention
Technical matters to be solved by this invention is, a kind of Geographic Information System adapter is provided, user can access the Geographic Information System (GIS) data of each isomery easily by described Geographic Information System adapter, by simply calling and design the geography information related service that namely can be terminal user and provide perfect.
In order to solve the problems of the technologies described above, embodiments provide a kind of Geographic Information System adapter, comprise the ground floor C/S structure of adapter client, the second layer C/S structure be made up of adapter Platform Server, application adapter class server, RDBMS server, GIS server and RS server, the information that user needs by wherein said adapter client submits adapter Platform Server and application adapter class server to, the information that the user that application adapter class server is submitted to according to adapter client needs retrieves the model meeting these information requirements in the model bank of RDBMS server, then described model is submitted to adapter Platform Server to the functional requirement of data, described functional requirement is converted into RS server by adapter Platform Server, GIS server and the basic operation achieved by RDBMS server, and RS server is submitted in described basic operation, GIS server and RDBMS server, RS server, operating result is returned to application adapter class server by GIS server and RDBMS server, and then operating result is returned to adapter client by application adapter class server.
For the improvement of technique scheme, between described ground floor C/S structure and second layer C/S structure, be provided with fire wall.
For the further improvement of technique scheme, integrated metadatabase in described RS server and GIS server.
For the further improvement of technique scheme, described metadatabase comprises RS Image Database, RS Extraction of Image information bank, digital map database and staqtistical data base.
For the further improvement of technique scheme, in described RDBMS server (6), be integrated with relational database.
Implement the embodiment of the present invention, having following beneficial effect is: Geographic Information System adapter of the present invention can integrate use by the geographic information data of isomery, reduce the cost on data creating and data mart modeling, by the high effective integration to geographic information data resource, greatly reduce the data redundancy between isomery Geographic Information System, also save physical disk space simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
The system architecture schematic diagram of a kind of Geographic Information System adapter that Fig. 1 provides for the embodiment of the present invention;
The model of a kind of Geographic Information System adapter that Fig. 2 provides for the embodiment of the present invention and data interaction frame diagram;
A kind of Geographic Information System adapter that Fig. 3 provides for the embodiment of the present invention is based on the geography information mode adapter of metadata;
A kind of Geographic Information System adapter that Fig. 4 provides for the embodiment of the present invention is based on the model base management system structural drawing of relational database;
The applicating flow chart of a kind of Geographic Information System adapter that Fig. 5 provides for the embodiment of the present invention.
embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Geographic Information System adapter of the present invention adopts the pattern of component-based development, one or more client 1 and one or more server, and the hardware net of lower floor, operating system and support platform interprocess communication system, common composition one supports the system of Distributed Calculation, analysis and expression, in this mode, application is divided into the client portion of front end and the server section of rear end.Customer sends request, and the content of request is passed to server by network communication services system, and server, according to having asked predetermined operation, then sends client back to result.
See Fig. 1, Geographic Information System adapter, the ground floor C/S structure comprising adapter client 1 and the second layer C/S structure be made up of adapter Platform Server 2, application adapter class server 3, RDBMS server 6, GIS server 7 and RS server 8, the information that user needs (is comprised input data source by wherein said adapter client 1, functional requirement and Model Selection, and about input and output options) submit adapter Platform Server 2 and application adapter class server 3 to, the information that the user that application adapter class server 3 is submitted to according to adapter client 1 needs retrieves the model meeting these information requirements in the model bank of RDBMS server 6, and the combination of support model and set up new model, then described model is submitted to adapter Platform Server 2 to the functional requirement of data, described functional requirement is converted into RS server 8 by adapter Platform Server 2, GIS server 7 and the basic operation achieved by RDBMS server 6, and RS server 8 is submitted in described basic operation, GIS server 7 and RDBMS server 6, RS server 8, operating result is returned to application adapter class server 3 by GIS server 7 and RDBMS server 6, and then operating result is returned to adapter client 1 by application adapter class server 3.
When client have special display, drawing require time, application adapter class server comprises RS server, GIS server and RDBMS server realize being responsible for calling other server according to the requirement of user; If when the result of model running is entered relational database or metadatabase by client requirements, application adapter class server will send request to adapter Platform Server, complete the registration in relational database or metadatabase.Adapter Platform Server is except the request that reception application adapter class server sends, can also directly respond the requirement inquired about according to time, space and data of attribute information, the basis of space frame realizes the fusion of multivariate data, and the function of adapter Platform Server is also that the function calling RS, GIS, RDBMS server realizes.Namely the exchange files form (the E00 form etc. as ARC/INFO) of IMPORT/EXPORT can be adopted between model and database, between model and model, also for being all transitioned into the internal memory exchanging form of API (as DLL in the future, OLE, ActiveX, COBRA etc.) possibility is provided.
This mode makes present system only consider the function of software and can not be too dependent on concrete software platform, therefore present system has good expandability, no matter adopt business software or adopt domestic software, can as server as long as have this function, the change of server software type all can not influential system structure.Concrete data interaction as shown in Figure 2.
Introduce metadatabase integrated in RS server and GIS server below, specifically based on the Geographic Information System adapter platform of metadata.See Fig. 3.
The overall data view that the object of Geographic Information System adapter is to be formed physically distribution and concentrates in logic.Implementation can adopt the mode based on metadata, also can adopt based on space opening DataBase combining (SpatialOpenDatabaseConnectivity, S-ODBC) Structured Query Language (SQL) (StructureQueryLanguage, and dynamic link libraries (DynamicLinkLibrary SQL), DLL) mode, and based on OO mode, as distributed common object model (DistributedCommonObjectModel, and the mode such as Common Object Request Broker Architecture (CommonObjectRequestBrokerArchitecture) DCOM).The Geographic Information System run due to large-scale businessization is mostly based upon on the basis of business software, and seldom all from low level development, and current most business software does not support these software protocol mechanism.From practical standpoint, the integrated platform based on metadata is a kind of effective Geographic Information System mode adapter.
The geodata council of the United States Federal (FederalGeographicalDataCommittee, FGDC) has worked out distributed geographic information metadata specification, has done a large amount of work in Geographic Information Standardization and standardization.But this specification is too loaded down with trivial details on the one hand, each being difficult to this specification has clear and definite expression in actual applications, and this specification is considered not enough mainly for static data collection to dynamically interactive type application such as multisource data fusion etc. on the other hand.Therefore the present invention is directed to the feature of geography information, extract the key content of FGDC, a metadata record corresponded is set up to each concrete spatial database, each distributed data base node is formed a metadatabase corresponding with concrete space data sets.According to the principle of distributed data base system site autonomy, each node is responsible for safeguarding that one of local data base and metadata item makes peace unification.Adapter Platform Server preserves the copy in respective meta-data storehouse, and maintains the Dynamic link library with each contact metadatabase.The conceptual schema of this mode is as Fig. 3.
Metadatabase is the database about database description information, fundamental purpose includes under the unified management of system by each database information of whole integrated system, form the data warehouse of Geographic Information System, and maintaining the integrality of whole system data, fulfillment database is integrated on this basis.The architecture that integrated system adopts should not rely on any concrete RS, GIS and RDBMS system, therefore needs metadatabase and the metadata management system of setting up oneself.
From actual needs, according to integrated system data content and type of database, metadata is divided into following 4 databases, various types of geographic information metadata storehouse at least should comprise following content:
(1) metadatabase of RS Image Database (raster data): comprise image coding, image modality, content description, imaging time (aspect and phase), image space scope (minimum enclosed rectangle longitude and latitude), storage format, memory location (CD, tape or the network address) etc.
(2) RS Extraction of Image information bank (vector data) metadatabase: comprise RS Extraction of Image information database coding, database-name, subject description, association image number, engineer's scale, projection pattern, storage format, Time Created, spatial dimension (minimum enclosed rectangle longitude and latitude) and the network address etc.
(3) metadatabase of digital map database (vector data): the staqtistical data base sequence number etc. comprising digital map database coding, database-name, subject description, storage format, engineer's scale, projection pattern, spatial dimension (minimum enclosed rectangle longitude and latitude), Time Created, the network address, connection.
(4) metadatabase of staqtistical data base (attribute data): comprise census data storehouse coding, database-name, database description, storage format, the network address etc.
The adapter set up by metadatabase and management system thereof can realize following function:
(1) spatial dimension (boundary rectangle) showing whole integrated system data collection directly perceived on adapter, and the concrete database that can represent each metadata item carries out visual information inquiry.
(2) adapter Platform Server realizes the metadatabase inquiry according to single key elements such as time, space, attribute or its combination, returns corresponding metadatabase data item.Spatial operator comprise comprise, intersect, comprise from, time operation operator comprise, run through, intersect, AT etc., property operations operator mainly refer to attribute item also, poor, connect, projection and selection etc.
(3) require and the content of metadatabase data item according to user, automatic generation corresponding RS, GIS functional software macrolanguage or API Calls, sql like language or the host language of database management language call, start corresponding functional software and carry out data processing, and result is returned to user.
(4) the organic and Dynamic link library between RS Image Database and RS information extraction storehouse is achieved by RS image number; The connection of GIS database and staqtistical data base is realized by staqtistical data base coding; RS information extraction storehouse and GIS database all belong to space vector mode, can process in the same way.By this organic Dynamic link library, ensure that the logic integrality of whole database.
(5) make the storage of each database be not limited to specific physical location, and any position of system can be stored in, register as long as corresponding in metadatabase, therefore strengthen the dirigibility of data management.
(6) system not only can manage known various types of data, and can be expanded easily by the registration of metadata management system.
Introduce relational database integrated in RDBMS server below.
Compared with the model of other information systems, the model of Geographic Information System obviously has following 3 features.First, the data involved by Geographic Information System model running all have obvious space characteristics, and model must have the function of spatial analysis.Secondly, data type involved by Geographic Information System model sport is complicated, comprise digital map data, remote sensing image data and statistics, the wherein space vector of the above two representatives and the at present also ununified specification of raster data, by business software and user's self-defining, cause a large amount of data conversions.3rd, Geographic Information System model in operational process and operation result generally all to realize visual.
According to the feature of GIS application model, the present invention proposes the hierarchical directory tree construction of a kind of MS-DOS of application and the mode of operating system file management system to carry out the management of model, this mode is suitable for all from the model of operating system low level development, and be run on same operating system basis, therefore still have following problem to need to solve:
(1) the large-scale Geographic Information System that businessization is run generally all is based upon on the basis of heterogeneous system (comprising hardware platform, operating system, procotol, software platform etc.), the isomerism of application model is also inevitable, and how assembling between different models and calling is the problem needing to solve.
(2) model and data had both connected each other inseparable, again should be logically separate, and how model interacts with database is another problem needing to solve.
(3) basic model storehouse (or claim method base) and application model storehouse (i.e. model bank) are difficult to distinguish obvious boundary, require by force to be divided into some basic models and application model may be more difficult when developing a certain complete model of submission.The function had for a certain model can be solved by alternate manner for the actual conditions of other models utilization.
(4) because the complicacy of spatial analysis is learned on the diversity of Geo-informatic Tupu and ground, the application model of large-scale integrated system seldom all uses higher level lanquage directly from low level development on operating system, but will make full use of the function that business software provides.The macrolanguage utilizing business software to provide and application programming interfaces carry out Application and Development model unavoidably, therefore need the problem of management solving this class model.
(5) connect based on object and embed (ObjectLinkandEmbed, OLE) geography model integration mode meets the developing direction of integration of information system, simultaneously realize geography model visual in there is the irreplaceable advantage of other modes, but the ole object management mode problem with space characteristic must solve.
(6) model base management system is inquired and browsed with except additions and deletions modify feature except what supply a model, new model is set up on the basis that also should be supported in existing model fast, this is very important in appraisal and spatial decision support system, good model base management system not only should support manual programming structure mould, should also provide the function of visual modeling.
For above Problems existing, the present invention proposes a kind of Geographic Information System adapter platform based on relational database, to some extent solves these problems.
By the analysis to geographical information model, comprise the model write with macrolanguage, the model provided with API form, the model that provides with object control form, inventor thinks and can be managed by this easy form of relational database.First need to propose specification to the model of this 3 type.
For the model write with macrolanguage, require that each model will have the ability of automatic startup optimization platform, after end of run, automatically exit this operation platform.This class model each model general only comprises a principal function, and input/output variable is all character type, representation file title.
For eXecute UML or the dynamic link libraries of higher level lanquage exploitation, except comprising principal function, other also should can be registered by public and shared function in model base management system.
For the model provided with object control form, input/output variable becomes the attribute of object, and event response function generally no longer includes parametric variable.But for control object model running, necessarily have one or several function to control control run and cause input/output argument to change, therefore and the attribute of change can be caused to combine by these functions, form a relational database data item, still can manage with relational database.
Model base management system realizes the management to model, function and variable by following connection, the standard compliant 3NF normal form of each block diagram, can manage with relational database, be the coupling calling and realize variable level of the management of implementation model level, measure for fulfill level.Concrete structure is as Fig. 4.
Under this model base management system, function numbering and pattern number can be searched by variable numbering, and then search the various information of variable, function and model.Otherwise, also can be searched all functions and variable that belong to this model by pattern number, also can inquire about same function simultaneously and by which model be called.This pattern support is to the inquiry, interpolation, deletion, amendment etc. of Stage, function level and variable level.The unified management to each class model of integrated system can be realized in this way.
The general structure based on client/server that the present invention proposes ensure that the professional platform independence of Geographic Information System model, adapter platform and the separate feature be closely connected again of model bank integrated platform provide data and model logically independently inherent mechanism.The model base management system based on relational database that we propose not only supplies a model the management of level, and provides the management of function level and variable level, breaches traditional input data file and adds the pattern that model obtains output data file.Therefore can realize the interactive controlling of data and model on trickleer level, lay a good foundation for visual structure mould simultaneously.
Under the general structure of adapter system and the support of model base management system, the basic ideas that visual modeling tool realizes are as Fig. 5:
(1) a corresponding icon is set up to each model (model, the model provided with API form, the model that provides with object control form that macrolanguage is write) and brief and concise explanatory note corresponds.
(2) according to the feature of adapter system application, form different modeling frameworks, and revise and expansion according to the needs of oneself for user as template.
(3) modeling tool provides increase, deletes and the function of moving icon and line.
(4) when user double-clicks icon, system queries model base management system, retrieves the variable required for this model running and on the position of this icon, ejects dialog box and fill for modeling person.The numerical value of variable also can be inquired about to adapter platform, to be supported between variable line to determine the coupled relation between the ordinal relation of input and output between each variable and variable simultaneously.
(5) the final mathematics library language formed identified and is converted into internal format, generating macrolanguage, API Calls respectively according to various situation, or handling the order of control object by ole automation.
(6) to generate order or call and user can be submitted to revise by hand in the mode of text.
(7) net result is run with compiling or the mode explained, and it is mutual to realize with adapter platform and model bank adapter platform, thus completes foundation and the operation of new model.
In fact this visual modeling is exactly Geographic Information System computer-aided software engineering (CASE) (CASEforGIS), require the data stream of clear and definite system, the interactive relation of model and data, and require have a large amount of subroutines, function, object control and class libraries etc. in system for calling.
Above the technical scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and embodiment, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, embodiment and range of application all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. a Geographic Information System adapter, comprises the ground floor C/S structure of adapter client, it is characterized in that:
Also comprise the second layer C/S structure be made up of adapter Platform Server, application adapter class server, RDBMS server, GIS server and RS server;
The information that user needs by wherein said adapter client submits adapter Platform Server and application adapter class server to, the information that the user that application adapter class server is submitted to according to adapter client needs retrieves the model meeting these information requirements in the model bank of RDBMS server, then described model is submitted to adapter Platform Server to the functional requirement of data, described functional requirement is converted into RS server by adapter Platform Server, GIS server and the basic operation achieved by RDBMS server, and RS server is submitted in described basic operation, GIS server and RDBMS server, RS server, operating result is returned to application adapter class server by GIS server and RDBMS server, and then operating result is returned to adapter client by application adapter class server.
2. Geographic Information System adapter according to claim 1, is characterized in that:
Fire wall is provided with between described ground floor C/S structure and second layer C/S structure.
3. Geographic Information System adapter according to claim 1 or 2, is characterized in that:
Integrated metadatabase in described RS server and GIS server.
4. Geographic Information System adapter according to claim 3, is characterized in that:
Described metadatabase comprises RS Image Database, RS Extraction of Image information bank, digital map database and staqtistical data base.
5. Geographic Information System adapter according to claim 1 or 2, is characterized in that:
Relational database is integrated with in described RDBMS server.
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| CN201410437907.4A CN105447039A (en) | 2014-08-29 | 2014-08-29 | Geological information system adapter |
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Application publication date: 20160330 |