CN108121705A - Multi-source two, three-dimensional geographic information data aggregate and the delivery system of a kind of opening - Google Patents
Multi-source two, three-dimensional geographic information data aggregate and the delivery system of a kind of opening Download PDFInfo
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Abstract
The invention discloses the multi-sources two, three-dimensional geographic information data aggregate and delivery system of a kind of opening, belong to geographical information technology, it is characterized in that including：Service configuration management module, data service release module, service accelerating module and service access module；Connection relation between each module is：Service access request is sent to service accelerating module by service access module, accelerating module forwarding service access request is serviced into service release module, it services release module and the configuration information storehouse in service configuration management module is inquired about according to service access request, it obtains the configuration information of service and services the link information for including data, service data connection information issuing service of the release module according to acquisition, service result is sent to service accelerating module, service accelerating module caches service result and service result is forwarded to service access module and completed to service access request.Advantage：It realizes the integrated management of mass data, realize the integrated of multi-source data and is seamlessly connected.
Description
Technical Field
The invention relates to the technical field of geographic information, in particular to a method for managing massive geographic information data, and publishing and sharing the massive data in a service form. The system ensures the sharability and high availability of multi-source geographic information data and reduces the insecurity of directly accessing geographic information.
Background
The internet has rapidly spread and grown into a new generation of distributed computing platforms, on which a large amount of data resources, computing resources and application resources are deployed, into the 21 st century. The Web service, as an emerging Web application model, marks the revolution of new generation internet software, and has become the mainstream computing range of distributed computers.
Each major advance in information technology has revolutionized the development of geographic information systems. The geographic information technology service is a necessary product of combining the Web service technology and the GIS. The GIS service provides a heart solution for cross-platform and cross-language geospatial data sharing and geographic processing function interoperation under the distributed environment which is difficult to realize based on the distributed development technologies such as a public object request agent system structure, a distributed component object model and the like, and changes the application mode of the GIS.
However, the functions provided by a single GIS service are limited and do not meet all the needs of the users. Therefore, people propose to realize the aggregation of the GIS service on the basis of the GIS service technology. GIS service aggregation can combine dispersed and relatively simple fine-grained services into complex coarse-grained services with new functions through communication and operation among GIS services, so that the utilization rate and reusability of the services are improved, the value of the services is increased, and the GIS service aggregation is an important solution for meeting variable requirements of users in an internet open network environment. The client customization of the GIS service is realized by taking the user requirement as the center, and the meeting of the personalized requirement of the user is one of the mainstream directions of the convergence development of the GIS service in the future.
However, at present, the technology has a plurality of key technical problems, for example, a cloud GIS central system is huge and needs to be interconnected, and the access efficiency is low; GIS data types are various, data are repeated, and the GIS data are difficult to use by a uniform interface in use; the GIS has massive data and wide range, and is difficult to position and quickly acquire; the user needs to plan widely, thereby providing GIS service which is relatively in line with the rules and being convenient for use and query.
Disclosure of Invention
In order to overcome the defects of the prior art, an open service access interface is provided, the service interface is designed aiming at resources, is separated from the specific internal implementation to reduce the coupling, and is convenient for updating and expanding the system. The GIS requirements of all industry users are met in a service mode, and the system has the remarkable advantages of meeting the requirements, being flexible in deployment, facilitating system integration, heterogeneous interconnection, version migration, supporting load balance through a cluster and the like. The information service system is laid for the construction of the information service system through the standard management of an informatization means, the guarantee service capability is improved in the continuous promotion of the informatization infrastructure, and the platform support and the real-time performance and the integrity of information resources are laid for the comprehensive promotion of the informatization construction. The life of people is changed, the development of industrial production, urban construction and national defense industry is promoted, and the real mutual fusion of electronic information and geographic information technology is achieved, so that the popularization and application of the concept of the smart city are realized.
An open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the system comprises: the system comprises a service configuration management module, a data service publishing module, a service acceleration module and a service access module; the service configuration management module integrally manages mass data, aggregates multi-source data, sets access authority of the data and service, records and manages service access logs, and issues the managed data with service; the service publishing module is positioned in the GIS server, publishes and shares data managed by the service configuration management module in a service form, designs a resource identifier with a unified style for a single service resource, aggregates the service when a plurality of data sources exist in one service, converts heterogeneous data from different sources into a unified coordinate system, and provides the heterogeneous data through a unified interface; the service access module is positioned on the client, schedules the service in the form of a data engine, provides components for accessing and releasing data, and accelerates the service access rate; the connection relationship among the modules is as follows: the service access module sends the service access request to the service acceleration module, the service acceleration module forwards the service access request to the service publishing module, the service publishing module inquires a configuration information base in the service configuration management module according to the service access request and obtains configuration information of the service and connection information of the service containing data, the service publishing module publishes the service according to the obtained data connection information and sends a service result to the service acceleration module, and the service acceleration module caches the service result and forwards the service result to the service access module to complete response to the service access request.
An open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the service configuration management module: carrying out integrated management on mass data, aggregating multi-source data, setting access permissions of the data and services, recording and managing service access logs, and issuing services to the managed data; the service configuration management module comprises a data management submodule, a service management submodule, a layer scheme configuration submodule, an authority setting submodule and a log management submodule, wherein the configuration information base,
the data management submodule is used for: managing and configuring data to be issued, and previewing the data to be issued;
the service management submodule is used for: performing service management, configuration and release on the data managed by the data management submodule;
the layer scheme configuration submodule comprises: according to the requirements of a service publisher, performing aggregation and layer display parameter setting on published services;
the authority setting submodule sets the authority of the data managed by the data management submodule and sets the authority of the service managed by the service management submodule;
the log management submodule: recording the daily state of the system, generating a log, supporting the export of the log, recording the operation generated by the service configuration management submodule, generating the log and supporting the export of the log;
the configuration information base: storing data connection information and data configuration information added by the data management submodule; storing the service configuration information added by the service management submodule; storing the layer information of the aggregation service added by the layer scheme configuration submodule; storing the data authority and the service authority set by the authority setting submodule; and storing the system log and the operation log generated by the log management submodule.
An open multi-source two, three-dimensional geographic information data aggregation and distribution system, wherein the management of data comprises: adding, warehousing, deleting and inquiring data; the configuration of the data is as follows: modifying the data connection attribute and modifying the data sub-resource; the format of the data management comprises databases Oracle, MySQL, SqlServer, Firebird, ArcGISSServer and ShapFile; the data types include: two three-dimensional vector data, three-dimensional model data, terrain image data and oblique photography data; the information to be configured is: data source name, port number, password, user name, data set and characteristic information; the service management comprises: service addition, service deletion and service inquiry; the service configuration comprises: service start/stop, service authority and password setting; the service type is as follows: the system comprises a terrain image data service, a two-dimensional and three-dimensional vector data service, a model texture data service, a tile data service, an inquiry and analysis service and a data editing service component; the operations of the service publisher include: establishing a layer scheme, deleting the layer scheme, modifying the layer scheme, inquiring the layer scheme and setting layer display parameters; the layer display parameters comprise: layer visibility, layer maximum and minimum visible distance and layer symbolization setting; the daily state generation log comprises: system logs and backup logs; the operation record generation log comprises: data management logs, service access logs; the according to the log level comprises: error level, warning level, notification level.
An open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the service distribution module: the service publishing module is positioned in the GIS server, publishes and shares the data managed by the service configuration management module in a service form, designs a resource identifier with a unified style for a single service resource, aggregates the services when a plurality of data sources exist in one service, converts heterogeneous data from different sources into a unified coordinate system, and provides the heterogeneous data by a unified interface; the service release module comprises a service registration submodule, a request receiving and analyzing submodule, a result coding submodule and a GIS service response submodule; wherein,
the service registration submodule: the configuration information is used for storing the publishing service;
the request receiving and analyzing submodule: the system comprises a server, a server and a server, wherein the server is used for receiving a service request, analyzing the content of the request, acquiring the type of the service and request parameters and positioning service resources;
the result encoding submodule: coding and compressing the service result fed back by the geographic information service response module;
the geographic information service response submodule: receiving a request forwarded by the request receiving and analyzing submodule, calling different data engines according to the type of the service request, and returning different types of service results;
the service access interface sub-module: and uniformly converting the access request of the client into an internal processing mode of the server, and returning a processing result to the client.
An open multisource two-dimensional and three-dimensional geographic information data aggregation and release system is characterized in that one or more service release modules are arranged in the same GIS server, and a plurality of service release modules release services in a cluster processing mode to form a geographic information server cluster; the configuration information is: including the physical path of the service at the server side and the service authority level.
An open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the geographic information service response submodule: receiving a request forwarded by the request receiving and analyzing submodule, calling different data engines according to the type of the service request, and returning different types of service results; the geographic information service response submodule comprises: the system comprises a terrain data component, a vector data component, a model texture component, a tile data component, a query analysis component and a model editing component; wherein,
the terrain data component: accessing the terrain and imagery of the module for the service;
the vector data component: two-dimensional and three-dimensional vector data for the service access module;
the model texture component: accessing model and texture data for the module for the service;
the tile data component: providing tile data for tile browsing of the service access module;
the query analysis component: providing model attribute query and space query for the service access module;
the data editing component: and providing the service access module with data editing.
An open multi-source two, three-dimensional geographic information data aggregation and distribution system, wherein the service acceleration module: the service accelerating module is positioned in the network server, and in order to improve the service access speed, the service access module is connected with the service publishing module through a network; the service acceleration module includes: the cluster service management submodule, the service cache submodule and the service forwarding submodule are connected; wherein,
the cluster service management submodule: cluster management is carried out on the service release module, the services released by the service release module are added and deleted, and the attribute of a cluster server is set;
the service cache submodule: judging whether the service request is cached or not according to the type of the service request, if so, forming a keyword according to the request, performing cache search by using the keyword to obtain cache information, feeding the cache information back to the service access module, if not, sending the cache information to the service release module through the service forwarding sub-module for processing, and updating the service cache and performing invalidation judgment on the cache information at regular time;
the service forwarding sub-module: and selecting a node of the geographic information server cluster according to the set forwarding mode, and forwarding the service request to a service publishing module of the node.
An open multisource two-dimensional and three-dimensional geographic information data aggregation and release system, wherein a service forwarding submodule comprises the following components according to a set service forwarding mode: and performing service forwarding in one or a combination of a polling mode, a weight mode and a Hash calculation mode.
An open multisource two-dimensional and three-dimensional geographic information data aggregation and release system is disclosed, wherein a service forwarding submodule adopts the following specific mode according to a set service forwarding mode:
the polling mode is as follows: each request is distributed to different back-end servers one by one according to the time sequence;
the weighting mode is as follows: the weight of the server is referred to in a polling mode, the weight is in direct proportion to the access ratio, and the weight is mainly calculated according to the performance of the server;
the Hash calculation mode is as follows: and computing the client IP through a Hash algorithm to obtain a computing result, and matching the Hash value of the request client IP with the computing result, wherein the client IP value is configured into the same back-end server if the numerical value matching is successful.
An open multi-source two, three-dimensional geographic information data aggregation and distribution system, wherein the service access module: the system is positioned on a client, schedules the service in a data engine mode, provides components for accessing and releasing data, and accelerates the service access rate; the service access module includes: the service request submodule, the service analysis submodule and the local cache submodule are connected; wherein:
the service request submodule: according to the data engine, converting the function of the data engine into a uniform service access interface, and sending a service request to a service release module;
the service analysis submodule is as follows: the server is used for receiving the network data returned by the service issuing submodule and decompressing and analyzing the returned network data to form an analysis result;
the local cache submodule: and carrying out local cache on the network data returned by the service release submodule, and regularly checking the local cache.
It can be seen from this that:
the system in the embodiment of the invention realizes the integrated management of mass data, solves the problem of difficult data use caused by wide data sources, numerous formats and large data volume, uniformly manages the geographic information data, realizes the integration and seamless connection of multi-source data, and provides services for external use of a uniform GIS reference architecture and a uniform object model; the acceleration of the service is realized through distributed calculation and geographic information data caching; providing an aggregation service for a client; the accuracy of the returned result is ensured while the service access efficiency is improved. The information service system is laid for the construction of the information service system through the standard management of an informatization means, the guarantee service capability is improved in the continuous promotion of the informatization infrastructure, and the platform support and the real-time performance and the integrity of information resources are laid for the comprehensive promotion of the informatization construction. The life of people is changed, the development of industrial production, urban construction and national defense industry is promoted, and the real mutual fusion of electronic information and geographic information technology is achieved, so that the popularization and application of the concept of the smart city are realized.
Drawings
Fig. 1 is a schematic structural diagram of an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system provided in an embodiment of the present invention;
FIG. 2 is a diagram illustrating a service configuration management module according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a service publishing module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a geographic information service response submodule according to an embodiment of the present invention;
FIG. 5 is a block diagram of a service acceleration module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a service access module in the embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, wherein the exemplary embodiments and the description of the present invention are used for explaining the present invention, but not limiting the present invention.
Example 1:
fig. 1 is a schematic structural diagram of an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system provided in this embodiment, and as shown in fig. 1, an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system is characterized in that the system includes: the system comprises a service configuration management module, a data service publishing module, a service acceleration module and a service access module; the service configuration management module integrally manages mass data, aggregates multi-source data, sets access authority of the data and service, records and manages service access logs, and issues the managed data with service; the service publishing module is positioned in the GIS server, publishes and shares data managed by the service configuration management module in a service form, designs a resource identifier with a unified style for a single service resource, aggregates the service when a plurality of data sources exist in one service, converts heterogeneous data from different sources into a unified coordinate system, and provides the heterogeneous data through a unified interface; the service access module is positioned on the client, schedules the service in the form of a data engine, provides components for accessing and releasing data, and accelerates the service access rate; the connection relationship among the modules is as follows: the service access module sends the service access request to the service acceleration module, the service acceleration module forwards the service access request to the service publishing module, the service publishing module inquires a configuration information base in the service configuration management module according to the service access request and obtains configuration information of the service and connection information of the service containing data, the service publishing module publishes the service according to the obtained data connection information and sends a service result to the service acceleration module, and the service acceleration module caches the service result and forwards the service result to the service access module to complete response to the service access request.
Fig. 2 shows an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the service configuration management module: carrying out integrated management on mass data, aggregating multi-source data, setting access permissions of the data and services, recording and managing service access logs, and issuing services to the managed data; the service configuration management module comprises a data management submodule, a service management submodule, a layer scheme configuration submodule, an authority setting submodule and a log management submodule, wherein the configuration information base,
the data management submodule is used for: managing and configuring data to be issued, and previewing the data to be issued;
the service management submodule is used for: performing service management, configuration and release on the data managed by the data management submodule;
the layer scheme configuration submodule comprises: according to the requirements of a service publisher, performing aggregation and layer display parameter setting on published services;
the authority setting submodule sets the authority of the data managed by the data management submodule and sets the authority of the service managed by the service management submodule;
the log management submodule: recording the daily state of the system, generating a log, supporting the export of the log, recording the operation generated by the service configuration management submodule, generating the log and supporting the export of the log;
the configuration information base: storing data connection information and data configuration information added by the data management submodule; storing the service configuration information added by the service management submodule; storing the layer information of the aggregation service added by the layer scheme configuration submodule; storing the data authority and the service authority set by the authority setting submodule; and storing the system log and the operation log generated by the log management submodule.
In a specific embodiment, the managing of the data includes: adding data, warehousing, deleting and inquiring data.
In a specific embodiment, the configuration of the data is as follows: modifying data connection attribute and modifying data sub-resource.
In a specific embodiment, the format of the data management includes databases Oracle, MySQL, SqlServer, Firebird, ArcGIS Server, and sharfile.
In a specific embodiment, the data types include: two three-dimensional vector data, three-dimensional model data, topographic image data, oblique photography data.
In a specific embodiment, the information to be configured is: data source name, port number, password, user name, data set, and feature class information.
In a specific embodiment, the service management includes: service addition, service deletion and service inquiry.
In a specific embodiment, the service configuration includes: service start/stop, service authority, and password setting.
In a specific embodiment, the service type is: the system comprises a terrain image data service, a two-dimensional and three-dimensional vector data service, a model texture data service, a tile data service, an inquiry and analysis service and a data editing service component.
In a specific embodiment, the operation of the service publisher includes: the method comprises the steps of creating a layer scheme, deleting the layer scheme, modifying the layer scheme, inquiring the layer scheme and setting layer display parameters.
In a specific embodiment, the layer display parameters include: layer visibility, layer maximum and minimum visible distance and layer symbolization setting.
In a specific embodiment, the generating the daily status log includes: system logs and backup logs.
In a specific embodiment, the generating the log of the operation record includes: data management logs, service access logs.
In a specific embodiment, the ranking according to the log includes: error level, warning level, notification level.
Fig. 3 shows an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the service distribution module: the service publishing module is positioned in the GIS server, publishes and shares the data managed by the service configuration management module in a service form, designs a resource identifier with a unified style for a single service resource, aggregates the services when a plurality of data sources exist in one service, converts heterogeneous data from different sources into a unified coordinate system, and provides the heterogeneous data by a unified interface; the service release module comprises a service registration submodule, a request receiving and analyzing submodule, a result coding submodule and a GIS service response submodule; wherein,
the service registration submodule: the configuration information is used for storing the publishing service;
the request receiving and analyzing submodule: the system comprises a server, a server and a server, wherein the server is used for receiving a service request, analyzing the content of the request, acquiring the type of the service and request parameters and positioning service resources;
the result encoding submodule: coding and compressing the service result fed back by the geographic information service response module;
the geographic information service response submodule: receiving a request forwarded by the request receiving and analyzing submodule, calling different data engines according to the type of the service request, and returning different types of service results;
the service access interface sub-module: and uniformly converting the access request of the client into an internal processing mode of the server, and returning a processing result to the client.
In a specific embodiment, one or more service publishing modules are arranged in the same GIS server, and a plurality of service publishing modules publish services in a cluster processing manner to form a geographic information server cluster.
In a specific embodiment, the configuration information: including the physical path of the service at the server side and the service authority level.
Fig. 4 shows an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the geographic information service response sub-module: receiving a request forwarded by the request receiving and analyzing submodule, calling different data engines according to the type of the service request, and returning different types of service results; the geographic information service response submodule comprises: the system comprises a terrain data component, a vector data component, a model texture component, a tile data component, a query analysis component and a model editing component; wherein,
the terrain data component: accessing the terrain and imagery of the module for the service;
the vector data component: two-dimensional and three-dimensional vector data for the service access module;
the model texture component: accessing model and texture data for the module for the service;
the tile data component: providing tile data for tile browsing of the service access module;
the query analysis component: providing model attribute query and space query for the service access module;
the data editing component: and providing the service access module with data editing.
Fig. 5 shows an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the service acceleration module: the service accelerating module is positioned in the network server, and in order to improve the service access speed, the service access module is connected with the service publishing module through a network; the service acceleration module includes: the cluster service management submodule, the service cache submodule and the service forwarding submodule are connected; wherein,
the cluster service management submodule: cluster management is carried out on the service release module, the services released by the service release module are added and deleted, and the attribute of a cluster server is set;
the service cache submodule: judging whether the service request is cached or not according to the type of the service request, if so, forming a keyword according to the request, performing cache search by using the keyword to obtain cache information, feeding the cache information back to the service access module, if not, sending the cache information to the service release module through the service forwarding sub-module for processing, and updating the service cache and performing invalidation judgment on the cache information at regular time;
the service forwarding sub-module: and selecting a node of the geographic information server cluster according to the set forwarding mode, and forwarding the service request to a service publishing module of the node.
In a specific embodiment, the service forwarding sub-module, according to the set service forwarding manner, includes: and performing service forwarding in one or a combination of a polling mode, a weight mode and a Hash calculation mode.
In a specific embodiment, the service forwarding sub-module, according to the set service forwarding mode, specifically comprises:
the polling mode is as follows: each request is distributed to different back-end servers one by one according to the time sequence;
the weighting mode is as follows: the weight of the server is referred to in a polling mode, the weight is in direct proportion to the access ratio, and the weight is mainly calculated according to the performance of the server;
the Hash calculation mode is as follows: and computing the client IP through a Hash algorithm to obtain a computing result, and matching the Hash value of the request client IP with the computing result, wherein the client IP value is configured into the same back-end server if the numerical value matching is successful.
Fig. 6 shows an open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system, wherein the service access module: the system is positioned on a client, schedules the service in a data engine mode, provides components for accessing and releasing data, and accelerates the service access rate; the service access module includes: the service request submodule, the service analysis submodule and the local cache submodule are connected; wherein:
the service request submodule: according to the data engine, converting the function of the data engine into a uniform service access interface, and sending a service request to a service release module;
the service analysis submodule is as follows: the server is used for receiving the network data returned by the service issuing submodule and decompressing and analyzing the returned network data to form an analysis result;
the local cache submodule: and carrying out local cache on the network data returned by the service release submodule, and regularly checking the local cache.
The following describes in detail the process of applying the system to service aggregation, service distribution and service access of multi-source two-dimensional geographic information data in three dimensions. In the specific embodiment, three-dimensional model data, two-dimensional vector model data and terrain data of a building in a certain area are taken as examples.
And the service publisher integrally manages the mass data to be published by using the service configuration management module. And a data management submodule in the service configuration management module detects the existence and the correctness of the data according to the database connection information of the building three-dimensional model data, the two-dimensional vector model data and the terrain data input by the service publisher. Storing the connection information of the building three-dimensional model data, the layer name of the data source, the reference coordinate system information and the modification time of the data configuration information into a data configuration information metadata table; storing the connection information of the two-dimensional vector model data, the layer name of the data source, the reference coordinate system information and the modification time of the data configuration information into a data configuration information metadata table; and storing the connection information data source layer name, the reference coordinate system information and the resolution of the topographic data into a data configuration information metadata table, wherein the data configuration information metadata table is stored in a configuration information base. And an authority setting submodule in the service configuration management module sets initial authority information of building three-dimensional model data, two-dimensional vector model data and topographic data according to the role information of the service publisher, and the data authority information is stored in a data authority metadata table. And the service publisher modifies the data authority of the building three-dimensional model data, the two-dimensional vector model data and the terrain data into browsing, inquiring and editing.
And a service management submodule in the service configuration management module performs service information configuration and service starting and stopping on the data managed by the data management submodule. The service management submodule detects the existence of building three-dimensional model data, two-dimensional vector model data and topographic data according to data connection information in the data configuration information metadata table, and stores the name, the password, the layer information of service release and the service release type of the service into a service configuration metadata table which is stored in a configuration information base. And the authority setting submodule in the service configuration management module sets initial authority information of the service according to the data authority information of the building three-dimensional model data, the two-dimensional vector model data and the terrain data, and the service authority information is stored in a service authority metadata table. And the service publisher modifies the building three-dimensional model data editing service authority into browsing, editing and inquiring, the two-dimensional vector model inquiry analysis service authority into browsing and inquiring, and the topographic data map browsing service authority into browsing and inquiring.
And the layer scheme configuration submodule in the service configuration management module aggregates the multi-source data. And the layer scheme configuration submodule creates a layer group, adds the issued building three-dimensional model data editing service, two-dimensional vector model data query analysis service and topographic data map browsing service to the created layer group, and modifies layer attribute information, wherein the layer attribute information comprises a layer scheme access name, a layer scheme access password, a scheme reference coordinate system, scheme layer visibility, scheme layer maximum and minimum visibility setting and scheme layer description. The layer scheme setting information is stored in a layer scheme metadata table, and the layer scheme metadata table is stored in a configuration information base. And a log management submodule in the service configuration management module records the modification record of each submodule of the service configuration management module, log information is stored in a log record table, and the log record table is stored in a configuration information base.
And the service user accesses the aggregation services of the building three-dimensional model data editing service, the two-dimensional vector model data query analysis service and the topographic data map browsing service by using the service access module. And a service request submodule of the service access module generates an aggregation service metadata request according to the layer scheme name, the layer scheme access password, the server address and the service port information input by a service user. The local cache module builds a search keyword according to the aggregated service connection information, queries a local cache database, codes and compresses the service metadata if the service metadata of the aggregated service exists in the local cache database, and returns the service metadata to a service analysis submodule of the service access module, the service analysis submodule decompresses and decodes the service metadata, acquires a reference coordinate system of a layer scheme, the number of layers of the layer scheme and configuration information of each layer, and the configuration information of each layer comprises: visibility of each layer, maximum and minimum visibility setting of each layer and scheme description of each layer; and if the service metadata of the aggregated service does not exist in the local cache database, sending a service metadata query request to a cluster service management submodule of the service acceleration module, and waiting for a response. And after receiving the aggregation service metadata request, the cluster service management submodule inquires the running state of each node of the cluster server and calculates and obtains the IP address of the processing node. The service forwarding sub-module forwards the service metadata query request to a request processing server node, and a service access module on the processing server node receives and processes the request.
And the service access interface sub-module of the service access module receives the service metadata query request and forwards the service metadata query request to the request analysis sub-module. The request analysis submodule analyzes the resource information, the requested service type, the requested additional query parameter and the identity verification information of the request sender in the request, the request analysis submodule sends an analysis result to the service registration submodule, and the service registration submodule inquires a configuration information base of the service configuration management module, the existence of the verification service, the verification information of the request sender and the service authority information of the request sender and determines whether to process the request. If the request is processed, the request analysis submodule constructs a keyword of the request, the service cache submodule is called to inquire whether the service cache exists, if the service cache does not exist, the request is sent to the geographic information service response submodule, and the geographic information service response submodule calls a corresponding component according to the data type and the service type contained in the service. The service metadata query request calls a query analysis component in the geographic information service response submodule to obtain aggregate service metadata, and the aggregate service metadata is sent to the result coding submodule; and if the cache exists, sending the result to a result coding submodule. And the result coding submodule codes, compresses and encrypts the aggregated service metadata and then returns the aggregated service metadata to the service acceleration module. And the cluster service management submodule of the service acceleration module receives the returned message, inquires the client address and the port of the front-end request and returns the aggregated service metadata to the service access module. And the service analysis submodule of the service access module receives the request return result, decompresses and decodes the request return result, and updates the local cache according to the latest modification time of the aggregated service metadata. The aggregation service metadata comprises the data types of all layers of the aggregation service, and layer information is created and initialized according to the data types of all the layers. And a service request submodule of the service access module generates a corresponding service request according to the data type of each image layer of the aggregated service, and continues to make a next round of service request.
The foregoing system descriptions and structural schematics are provided merely as illustrative examples and are not intended to require or imply that the steps of the above-described operations or aspects must be performed in the order presented. As will be appreciated by one skilled in the art, the order of the blocks in the foregoing aspects may be performed in any order. Words such as "thereafter," "then," "next," etc. are not intended to limit the order of operations or steps; these words are used only to guide the reader through the description of the method. Furthermore, any reference to claim elements in the singular, for example, using the articles "a," "an," or "the" is not to be construed as limiting the element to the singular.
The various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the aspects disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The system in the embodiment of the invention can effectively realize the integrated management of mass data, solve the problems of wide data sources, numerous formats and difficult data use caused by large data volume, uniformly manage the geographic information data, realize the integration and seamless connection of multi-source data and provide services for external unified GIS reference architecture and unified object model; the acceleration of the service is realized through distributed calculation and geographic information data caching; providing an aggregation service for a client; the accuracy of the returned result is ensured while the service access efficiency is improved. The information service system is laid for the construction of the information service system through the standard management of an informatization means, the guarantee service capability is improved in the continuous promotion of the informatization infrastructure, and the platform support and the real-time performance and the integrity of information resources are laid for the comprehensive promotion of the informatization construction. The life of people is changed, the development of industrial production, urban construction and national defense industry is promoted, and the real mutual fusion of electronic information and geographic information technology is achieved, so that the popularization and application of the concept of the smart city are realized.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system is characterized by comprising: the system comprises a service configuration management module, a data service publishing module, a service acceleration module and a service access module; the service configuration management module integrally manages mass data, aggregates multi-source data, sets access authority of the data and service, records and manages service access logs, and issues the managed data with service; the service publishing module is positioned in the GIS server, publishes and shares data managed by the service configuration management module in a service form, designs a resource identifier with a unified style for a single service resource, aggregates the service when a plurality of data sources exist in one service, converts heterogeneous data from different sources into a unified coordinate system, and provides the heterogeneous data through a unified interface; the service access module is positioned on the client, schedules the service in the form of a data engine, provides components for accessing and releasing data, and accelerates the service access rate; the connection relationship among the modules is as follows: the service access module sends the service access request to the service acceleration module, the service acceleration module forwards the service access request to the service publishing module, the service publishing module inquires a configuration information base in the service configuration management module according to the service access request and obtains configuration information of the service and connection information of the service containing data, the service publishing module publishes the service according to the obtained data connection information and sends a service result to the service acceleration module, and the service acceleration module caches the service result and forwards the service result to the service access module to complete response to the service access request.
2. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 1, wherein: the service configuration management module: carrying out integrated management on mass data, aggregating multi-source data, setting access permissions of the data and services, recording and managing service access logs, and issuing services to the managed data; the service configuration management module comprises a data management submodule, a service management submodule, a layer scheme configuration submodule, an authority setting submodule and a log management submodule, wherein the configuration information base,
the data management submodule is used for: managing and configuring data to be issued, and previewing the data to be issued;
the service management submodule is used for: performing service management, configuration and release on the data managed by the data management submodule;
the layer scheme configuration submodule comprises: according to the requirements of a service publisher, performing aggregation and layer display parameter setting on published services;
the authority setting submodule sets the authority of the data managed by the data management submodule and sets the authority of the service managed by the service management submodule;
the log management submodule: recording the daily state of the system, generating a log, supporting the export of the log, recording the operation generated by the service configuration management submodule, generating the log and supporting the export of the log;
the configuration information base: storing data connection information and data configuration information added by the data management submodule; storing the service configuration information added by the service management submodule; storing the layer information of the aggregation service added by the layer scheme configuration submodule; storing the data authority and the service authority set by the authority setting submodule; and storing the system log and the operation log generated by the log management submodule.
3. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 2, wherein: the managing of data includes: adding, warehousing, deleting and inquiring data; the configuration of the data is as follows: modifying the data connection attribute and modifying the data sub-resource; the format of the data management comprises databases Oracle, MySQL, SqlServer, Firebird, ArcGIS Server and ShapFile; the data types include: two three-dimensional vector data, three-dimensional model data, terrain image data and oblique photography data; the information to be configured is: data source name, port number, password, user name, data set and characteristic information; the service management comprises: service addition, service deletion and service inquiry; the service configuration comprises: service start/stop, service authority and password setting; the service type is as follows: the system comprises a terrain image data service, a two-dimensional and three-dimensional vector data service, a model texture data service, a tile data service, an inquiry and analysis service and a data editing service component; the operations of the service publisher include: establishing a layer scheme, deleting the layer scheme, modifying the layer scheme, inquiring the layer scheme and setting layer display parameters; the layer display parameters comprise: layer visibility, layer maximum and minimum visible distance and layer symbolization setting; the daily state generation log comprises: system logs and backup logs; the operation record generation log comprises: data management logs, service access logs; the according to the log level comprises: error level, warning level, notification level.
4. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 1, wherein: the service publishing module: the service publishing module is positioned in the GIS server, publishes and shares the data managed by the service configuration management module in a service form, designs a resource identifier with a unified style for a single service resource, aggregates the services when a plurality of data sources exist in one service, converts heterogeneous data from different sources into a unified coordinate system, and provides the heterogeneous data by a unified interface; the service release module comprises a service registration submodule, a request receiving and analyzing submodule, a result coding submodule and a GIS service response submodule; wherein,
the service registration submodule: the configuration information is used for storing the publishing service;
the request receiving and analyzing submodule: the system comprises a server, a server and a server, wherein the server is used for receiving a service request, analyzing the content of the request, acquiring the type of the service and request parameters and positioning service resources;
the result encoding submodule: coding and compressing the service result fed back by the geographic information service response module;
the geographic information service response submodule: receiving a request forwarded by the request receiving and analyzing submodule, calling different data engines according to the type of the service request, and returning different types of service results;
the service access interface sub-module: and uniformly converting the access request of the client into an internal processing mode of the server, and returning a processing result to the client.
5. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system according to claims 1 and 4, wherein: one or more than one service publishing module is arranged in the same GIS server, and a plurality of service publishing modules publish services in a cluster processing mode to form a geographic information server cluster; the configuration information is: including the physical path of the service at the server side and the service authority level.
6. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 4, wherein: the geographic information service response submodule: receiving a request forwarded by the request receiving and analyzing submodule, calling different data engines according to the type of the service request, and returning different types of service results; the geographic information service response submodule comprises: the system comprises a terrain data component, a vector data component, a model texture component, a tile data component, a query analysis component and a model editing component; wherein,
the terrain data component: accessing the terrain and imagery of the module for the service;
the vector data component: two-dimensional and three-dimensional vector data for the service access module;
the model texture component: accessing model and texture data for the module for the service;
the tile data component: providing tile data for tile browsing of the service access module;
the query analysis component: providing model attribute query and space query for the service access module;
the data editing component: and providing the service access module with data editing.
7. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 1, wherein: the service acceleration module: the service accelerating module is positioned in the network server and connects the service access module with the service publishing module through a network; the service acceleration module includes: the cluster service management submodule, the service cache submodule and the service forwarding submodule are connected; wherein,
the cluster service management submodule: cluster management is carried out on the service release module, the services released by the service release module are added and deleted, and the attribute of a cluster server is set;
the service cache submodule: judging whether the service request is cached or not according to the type of the service request, if so, forming a keyword according to the request, performing cache search by using the keyword to obtain cache information, feeding the cache information back to the service access module, if not, sending the cache information to the service release module through the service forwarding sub-module for processing, and updating the service cache and performing invalidation judgment on the cache information at regular time;
the service forwarding sub-module: and selecting a node of the geographic information server cluster according to the set forwarding mode, and forwarding the service request to a service publishing module of the node.
8. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 7, wherein: the service forwarding sub-module comprises the following steps according to the set service forwarding mode: and performing service forwarding in one or a combination of a polling mode, a weight mode and a Hash calculation mode.
9. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system according to claims 7 and 8, characterized in that: the service forwarding submodule adopts a specific mode according to a set service forwarding mode as follows:
the polling mode is as follows: each request is distributed to different back-end servers one by one according to the time sequence;
the weighting mode is as follows: the weight of the server is referred to in a polling mode, the weight is in direct proportion to the access ratio, and the weight is mainly calculated according to the performance of the server;
the Hash calculation mode is as follows: and computing the client IP through a Hash algorithm to obtain a computing result, and matching the Hash value of the request client IP with the computing result, wherein the client IP value is configured into the same back-end server if the numerical value matching is successful.
10. The open multi-source two-dimensional and three-dimensional geographic information data aggregation and distribution system of claim 1, wherein: the service access module: the system is positioned on a client, schedules the service in a data engine mode, provides components for accessing and releasing data, and accelerates the service access rate; the service access module includes: the service request submodule, the service analysis submodule and the local cache submodule are connected; wherein:
the service request submodule: according to the data engine, converting the function of the data engine into a uniform service access interface, and sending a service request to a service release module;
the service analysis submodule is as follows: the server is used for receiving the network data returned by the service issuing submodule and decompressing and analyzing the returned network data to form an analysis result;
the local cache submodule: and carrying out local cache on the network data returned by the service release submodule, and regularly checking the local cache.
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Application publication date: 20180605 Assignee: Tianjin survey and Design Institute Group Co.,Ltd. Assignor: STARGIS (TIANJIN) TECHNOLOGY DEVELOPMENT Co.,Ltd. Contract record no.: X2023980054666 Denomination of invention: An open multi-source 2D and 3D geographic information data aggregation and publishing system Granted publication date: 20211008 License type: Common license|Cross license Record date: 20231228 |