CN111310230B - Spatial data processing method, device, equipment and medium - Google Patents
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Abstract
The application discloses a spatial data processing method, a spatial data processing device and a spatial data processing medium, which are applied to the technical field of computers and used for improving readability and usability of map data and improving access efficiency and access performance. The method comprises the following specific steps: receiving a data access request initiated by calling a data access interface; acquiring the space data requested to be accessed based on the data access request; and converting the spatial data from the non-relational data structure into a universal data format and returning. In addition, the data access request is initiated by calling the data access interface, the space data can be pulled and used immediately, and the access efficiency and the access performance of the space data are improved.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method, an apparatus, a device, and a medium for processing spatial data.
Background
In the modern informatization development process, the electronic map goes deep into the lives of people and provides convenience for people to go out.
In practical application, each service of the electronic map can access the map data of the electronic map so as to perform corresponding service processing on the map data.
However, in the current map data access method, for each business of the electronic map, readability and usability of the map data are poor, and access efficiency and access performance are low.
Disclosure of Invention
The embodiment of the application provides a spatial data processing method, a spatial data processing device, spatial data processing equipment and a spatial data processing medium, which are used for improving the readability and the usability of map data and improving the access efficiency and the access performance of the map data.
The technical scheme provided by the embodiment of the application is as follows:
in one aspect, an embodiment of the present application provides a spatial data processing method, including:
receiving a data access request initiated by calling a data access interface;
based on the data access request, acquiring the spatial data requested to be accessed from a spatial database requested to be accessed, wherein the spatial data in the spatial database is stored by adopting a non-relational data structure;
and converting the spatial data from the non-relational data structure into a general data format, and returning the spatial data in the general data format through the data access interface.
In a possible implementation manner, before acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, the method further includes:
and authenticating the data access request and determining that the data access request passes the authentication.
In one possible embodiment, authenticating the data access request and determining that the data access request is authenticated comprises:
based on the user identification in the data access request, acquiring a stored user access token and a data access range;
based on the stored user access token, performing user authentication on the user access token in the data access request, and based on the stored data access range, performing data authentication on the request parameter in the data access request;
and when the user authentication of the user access token in the data access request is determined to pass and the data authentication of the request parameter passes, judging that the authentication of the data access request passes.
In a possible implementation manner, before acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, the method further includes:
and carrying out format check on the request parameters in the data access request, and determining that the format check of the request parameters is passed.
In one possible implementation, the obtaining of the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request includes:
determining a spatial database requesting access based on database description parameters contained in request parameters in the data access request;
generating a data query statement based on data description parameters contained in request parameters in the data access request;
and acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data query statement.
In a possible implementation manner, before generating the data query statement based on the data description parameter included in the request parameter in the data access request, the method further includes:
generating an object query statement based on data description parameters contained in request parameters in the data access request;
and determining that a corresponding Object Relational Mapping (ORM) Object is not cached in the spatial database requested to be accessed for the spatial data requested to be accessed based on the Object query statement.
In one possible embodiment, converting spatial data from a non-relational data structure to a generic data format includes:
converting the spatial data of the non-relational data structure into an ORM object based on an object conversion model, wherein the object conversion model is established based on the conversion relation between the spatial data of the non-relational data structure and the ORM object;
and mapping the ORM object into the spatial data in the general data format based on a data mapping model, wherein the data mapping model is established based on the mapping relation between the ORM object and the spatial data in the general data format.
On the other hand, an embodiment of the present application provides a spatial data processing apparatus, including:
a request receiving unit, configured to receive a data access request initiated by invoking a data access interface;
the data acquisition unit is used for acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, wherein the spatial data in the spatial database is stored by adopting a non-relational data structure;
the data conversion unit is used for converting the spatial data from a non-relational data structure into a general data format;
and the data return unit is used for returning the spatial data in the universal data format through the data access interface.
In a possible implementation, before acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, the request receiving unit is further configured to:
and authenticating the data access request and determining that the data access request passes the authentication.
In a possible implementation manner, when the data access request is authenticated and it is determined that the data access request is authenticated, the request receiving unit is specifically configured to:
based on the user identification in the data access request, acquiring a stored user access token and a data access range;
based on the stored user access token, performing user authentication on the user access token in the data access request, and based on the stored data access range, performing data authentication on the request parameter in the data access request;
and when the user authentication of the user access token in the data access request is determined to pass and the data authentication of the request parameter passes, judging that the authentication of the data access request passes.
In a possible implementation, before acquiring, based on the data access request, the spatial data requested to be accessed from the spatial database requested to be accessed, the data acquisition unit is further configured to:
and carrying out format check on the request parameters in the data access request, and determining that the format check of the request parameters is passed.
In a possible implementation manner, when the spatial data requested to be accessed is acquired from the spatial database requested to be accessed based on the data access request, the data acquiring unit is specifically configured to:
determining a spatial database requesting access based on database description parameters contained in request parameters in the data access request;
generating a data query statement based on data description parameters contained in request parameters in the data access request;
and acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data query statement.
In a possible implementation manner, before generating the data query statement based on the data description parameter included in the request parameter in the data access request, the data obtaining unit is further configured to:
generating an object query statement based on data description parameters contained in request parameters in the data access request;
and determining that the spatial database requesting access does not cache a corresponding ORM object for the spatial data requesting access based on the object query statement.
In a possible implementation, when converting the spatial data from the non-relational data structure to the generic data format, the data conversion unit is specifically configured to:
converting the spatial data of the non-relational data structure into an ORM object based on an object conversion model, wherein the object conversion model is established based on the conversion relation between the spatial data of the non-relational data structure and the ORM object;
and mapping the ORM object into the spatial data in the general data format based on a data mapping model, wherein the data mapping model is established based on the mapping relation between the ORM object and the spatial data in the general data format.
In another aspect, an embodiment of the present application provides a spatial data processing apparatus, including: the device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the computer program to realize the spatial data processing method provided by the embodiment of the application.
On the other hand, the embodiment of the present application further provides a computer-readable storage medium, where computer instructions are stored, and when the computer instructions are executed by a processor, the spatial data processing method provided in the embodiment of the present application is implemented.
The embodiment of the application has the following beneficial effects:
in the embodiment of the application, the non-relational data structure is adopted to store the spatial data of the electronic map, the expandability of the spatial data can be improved, the maintenance cost of the spatial data is reduced, moreover, the spatial data which are requested to be accessed are converted into the universal data format from the non-relational data structure, the standardized processing of the spatial data can be realized, the readability and the usability of the spatial data can be improved, in addition, for each service of the electronic map, the data access request is initiated by calling the data access interface, the spatial data in the universal data format can be obtained, the space data can be used as it is, and the access efficiency and the access performance of the spatial data can be improved.
Drawings
FIG. 1 is a schematic diagram of functional division of a data access interface in an embodiment of the present application;
FIG. 2 is a schematic diagram of a system architecture of an electronic map system according to an embodiment of the present application;
FIG. 3 is a logic flow diagram illustrating a spatial data processing method according to an embodiment of the present application;
FIG. 4 is a schematic flow chart illustrating an overview of a spatial data processing method according to an embodiment of the present application;
FIG. 5 is a schematic diagram of the internal components of a data access server in an embodiment of the present application;
FIG. 6 is a schematic flowchart illustrating a spatial data processing method according to an embodiment of the present application;
FIG. 7 is a functional block diagram of a spatial data processing apparatus according to an embodiment of the present disclosure;
fig. 8 is a schematic hardware structure diagram of a spatial data processing apparatus in an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solution and advantages of the present application more clearly and clearly understood, the technical solution in the embodiments of the present application will be described below in detail and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
To facilitate a better understanding of the present application by those skilled in the art, a brief description of the technical terms involved in the present application will be given below.
1. Spatial data, which is data used to describe spatial objects in an electronic map, includes but is not limited to: data source information, basic information, spatial information, associated information, attribute information and the like, wherein:
data source information, which provides information such as a source, a data range, a data volume and the like for data;
basic information, namely information such as object identification, data version number, timestamp and the like;
the spatial information is information such as spatial coordinates;
the correlation information is information such as object identification and types of other correlated space objects;
the attribute information is information such as type and distribution characteristics.
In the present application, spatial objects include, but are not limited to: geometric objects such as roads and simple intersections, and relationship objects such as intersection relationships, danger signs, lane information and traffic restrictions, which are used for describing the geometric objects and the association relationships between the geometric objects. Among them, the space object can be divided into: the spatial information of the spatial object is expressed by spatial coordinates, and the spatial coordinates can be composed of two parts, namely type (type) and coordinate arrays (coordinates).
For example: the spatial coordinates of the geometric object "road (road)" may be: { type: lineString, coordinates: [ [115.684115, 37.7240789], [115.6841933, 37.7243366], [115.6841938, 37.7243831], [115.6841524, 37.7244199] ] };
the spatial coordinates of the geometric object "simple intersection (node)" may be: { type: point, coordinates: [115.6841145, 37.7240789]}.
For another example: the spatial coordinates of the relationship object "lane information (ln)" may be: { type: lineString, coordinatates: [ [114.55403, 38.044512], [114.55406, 38.04353], [114.55381, 38.04352] ] };
the spatial coordinates of the relationship object "traffic restriction (cond)" may be: { type: lineString, coordinates: [[114.55403, 38.044512],[114.55406, 38.04353]]}.
In this application, the spatial data is stored in a non-relational data structure and provided to the user in a general data format, where the non-relational data structure may be, but is not limited to: a Key-Value type data structure, a generic type data format may be, but is not limited to: a geographic Object Notation (GeoJSON) format, an eXtensible Markup Language (XML) format, a binary format, and the like.
2. And the spatial database is a database which is deployed in the data storage layer and used for storing spatial data of the spatial object.
In the present application, a plurality of spatial databases are deployed in the data storage layer, including but not limited to: the system comprises a master library used for storing the spatial data of all spatial objects in the electronic map and sub-libraries respectively created for various services of a service layer.
3. And the data access server is background running equipment which is deployed in the data access layer and used for controlling the access operation of the spatial database of the data storage layer.
In the present application, in order to increase the concurrency, a plurality of data access servers are deployed in the data access layer, and are used for performing parallel processing on a plurality of data access requests.
4. And the data access interface is used for providing an interface for the data access server to access a spatial database of the data storage layer.
In the present application, the data access server is provided with a plurality of data access interfaces for obtaining different types of spatial data, for example, referring to fig. 1, the data access interfaces provided by the data access server include but are not limited to: the data access interface is used for acquiring large-range space data, the data access interface is used for acquiring small-range space data, the data access interface is used for acquiring space data in a rectangular frame, the data access interface is used for acquiring polygonal space data, the data access interface is used for acquiring urban data, the data access interface is used for acquiring map data, the data access interface is used for acquiring version information, the data access interface is used for acquiring a map identification list, the data access interface is used for acquiring a map range, the data access interface is used for acquiring provincial boundary maps and the like.
5. And the request parameter is a parameter carried by the data access request and used for requesting the spatial data.
In the present application, the request parameters include, but are not limited to: database description parameters, data description parameters, and the like, wherein:
database description parameters, which are parameters for describing a spatial database requesting access, include but are not limited to: parameters such as service type and database number;
the data description parameter is a parameter for describing the spatial data requested to be accessed, and includes but is not limited to: province, city, map layer, map sheet, geographical range, data identification and other parameters.
6. And the query statement is a statement used for performing query operation on the spatial database.
In this application, query statements include, but are not limited to: a data query statement and an object query statement, wherein:
the data query statement is a statement used for performing query operation on the spatial data stored in the spatial database;
and the object query statement is a statement used for performing query operation on the ORM object of the spatial data cached in the spatial database.
7. And the object conversion model is a model established based on the conversion relation between the spatial data of the non-relational data structure and the ORM object.
In the application, the conversion relationship between the spatial data of the non-relational data structure and the ORM object may be configured in the object conversion model in the form of a configuration file, so as to be called by the object conversion model.
8. And the data mapping model is established based on the mapping relation between the ORM object and the space data in the universal data format.
In the application, the mapping relationship between the ORM object and the space data in the general data format may be configured in the data mapping model in the form of a program component, so as to be called by the data mapping model.
After introducing the technical terms related to the present application, the following briefly introduces the application scenarios and design ideas of the embodiments of the present application.
At present, the data formats adopted by various services of an electronic map are different, when the various services access the map data of the electronic map, in order to adapt to the data formats used by the various services, for each service, the map data requested to be accessed by the service generally needs to be converted into the data format used by the service and then returned to the service for processing, and for each service, the readability and the usability of the map data are poor.
Therefore, in the embodiment of the present application, referring to fig. 2, the electronic map system includes a service layer, a data access layer, and a data storage layer, where the service layer is deployed with services 210 of data evaluation, data inspection, statistical monitoring, track mining, data fusion, and the like of the electronic map, the data access layer is deployed with a plurality of data access servers 220, and the data storage layer is deployed with a plurality of spatial databases 230. In practical applications, the service 210 of the service layer may initiate a data access request by calling a data access interface, the data access server 220 of the data access layer may receive the data access request initiated by the service 210 of the service layer by calling the data access interface, and after determining the spatial database 230 requested to be accessed from each spatial database 230 of the data storage layer, obtain the spatial data requested to be accessed from the spatial database 230 requested to be accessed, and convert the spatial data from a non-relational data structure into a general data format, specifically, as shown in fig. 3, the data access server 220 of the data access layer may convert the spatial data of the non-relational data structure into an ORM object based on an object conversion model, and map the ORM object into the spatial data of the general data format based on a data mapping model, and further, return the spatial data of the general data format to the service 210 of the service layer through the data access interface called by the service 210 of the service layer to perform corresponding service processing.
In addition, for each service 210 of the service layer, the data access request is initiated by calling a data access interface, the spatial data in the universal data format can be acquired, and then the instant use of the spatial data can be realized, so that the access efficiency and the access performance of the spatial data are improved.
After introducing the application scenario and the design concept of the embodiment of the present application, the following describes in detail the technical solution provided by the embodiment of the present application.
An embodiment of the present application provides a spatial data processing method, which may be applied to the data access server 220 of the data access layer in the electronic map system shown in fig. 2, and specifically, referring to fig. 4, an overview flow of the spatial data processing method provided in the embodiment of the present application is as follows:
step 401: a data access request initiated by invoking the data access interface is received.
In practical application, the data access server 220 of the data access layer is provided with a plurality of data access interfaces, so that each service 210 of the service layer can obtain different types of spatial data, and in specific implementation, when a service 210 of the service layer receives a data access request initiated by a user for a certain type of spatial data, the service 210 of the service layer can call a corresponding data access interface to send the data access request.
It is worth mentioning that each service 210 of the service layer may allocate a data access request initiated by calling a data access interface to a corresponding data access server 220 of the data access layer for processing through a load balancing policy, where the load balancing policy includes multiple load balancing policies, for example, a load balancing policy based on polling processing, a load balancing policy based on weight allocation, a load balancing policy based on Internet Protocol Address (IP) binding, a load balancing policy based on a hash value of a Uniform Resource Locator (URL), and the like, and the specifically adopted load balancing policy is not limited in the present application.
In this embodiment of the application, in order to improve security of data access, the data access server 220 of the data access layer may authenticate a user name and a password of the user for each service 210 of the service layer when the user logs in for the first time, and after determining that the user name and the password of the user are authenticated, configure an access token for the user and return the access token to the user, further, configure a data access range representing data access permission for the user, and store the access token and the data access range of the user based on a user identifier of the user, based on which, when the service 210 of the service layer invokes a data access interface to send a data access request, the service 210 of the service layer may also carry the user identifier and the access token in the data access request, so that after receiving the data access request initiated by the service 210 of the service layer through invoking the data access interface, the data access server 220 of the data access layer may authenticate the data access request according to the user identifier and the access token in the data access request, and specifically, the data access server 220 of the data access layer may authenticate the following manner when:
first, the data access server 220 of the data access layer obtains the stored user access token and data access range based on the user identifier in the data access request.
Then, the data access server 220 of the data access layer performs user authentication on the user access token in the data access request based on the stored user access token, and performs data authentication on the request parameter in the data access request based on the stored data access range.
Finally, when the data access server 220 of the data access layer determines that the user authentication of the user access token in the data access request passes and the data authentication of the request parameter passes, it determines that the data access request passes the authentication.
Further, if the data access server 220 of the data access layer determines that the data access request is authenticated, the step 402 may be continued. Of course, if the data access server 220 of the data access layer determines that the data access request is not authenticated, the data access request initiated by the service 210 of the service layer may be rejected.
Step 402: and acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request.
In practical applications, in order to ensure smooth data access, the data access server 220 of the data access layer may further perform format check on the request parameter in the data access request before obtaining the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, and obtain the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request when determining that the format check of the request parameter in the data access request passes. Of course, the data access server 220 of the data access layer may deny the data access request initiated by the service 210 of the service layer when determining that the format check of the request parameter in the data access request fails.
In specific implementation, when the data access server 220 of the data access layer obtains the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, the following manners may be adopted, but are not limited to:
first, the data access server 220 of the data access layer may determine a spatial database to which access is requested based on a database description parameter included in the request parameter in the data access request.
Specifically, the data access server 220 of the data access layer may determine the spatial database requested to be accessed based on the database description parameters, such as the service type and the database number, included in the request parameters of the data access request.
The data access server 220 of the data access layer may then generate a data query statement based on the data description parameters contained in the request parameters in the data access request.
Specifically, the data access server 220 of the data access layer may generate a data query statement based on data description parameters, such as provinces, cities, layers, maps, geographical ranges, and data identifiers, included in the request parameter of the data access request.
Finally, the data access server 220 of the data access layer may query the spatial data requested to be accessed in the spatial database requested to be accessed based on the data query statement.
Step 403: and converting the spatial data from the non-relational data structure into a universal data format, and returning the spatial data in the universal data format through a data access interface.
In practical applications, the data access server 220 of the data access layer may perform step 403 in the following manners:
first, the data access server 220 of the data access layer converts spatial data of a non-relational data structure into an ORM object based on an object conversion model.
Then, the data access server 220 of the data access layer maps the ORM object to spatial data of a general data format based on the data mapping model.
Finally, the data access server 220 of the data access layer returns the general-purpose spatial data to the service 210 of the service layer for processing through the data access interface called by the service 210 of the service layer.
It is worth mentioning that, in the embodiment of the present application, in order to improve the data access efficiency, after converting the spatial data of the non-relational data structure into the ORM object based on the object conversion model, the data access server 220 of the data access layer may further cache the ORM object corresponding to the spatial data into the spatial database to which the spatial data belongs based on the data identifier of the spatial data, so that when the data access server 220 of the subsequent data access layer receives a data access request initiated by the service 210 of the service layer through a call data access interface, after determining the spatial database requesting access based on the database description parameters, such as the service type and the database number, included in the request parameters in the data access request, the data identifier of the spatial data requesting access may be obtained first from the data description parameters included in the request parameters carried in the data access request, and based on the data identifier, an object query statement may be generated, and based on the object query statement, the query statement may query the ORM object corresponding to the spatial data requested access in the spatial database requesting access based on the data access model, and the data access server may directly process the data access request by the data access server based on the data access model, and the data access layer, and the data access server may process the data access request directly.
Certainly, when the data access server 220 of the data access layer determines that an ORM object corresponding to the spatial data requested to be accessed is not queried in the spatial database requested to be accessed, it may be considered that the ORM object corresponding to the spatial data requested to be accessed is not cached in the spatial database requested to be accessed, in this case, the data access server 220 of the data access layer may generate a data query statement based on data description parameters, such as province, city, map layer, map, geographical range, data identifier, and the like, included in the request parameter in the data access request, acquire the spatial data requested to be accessed from the spatial database requested to be accessed based on the data query statement, convert the spatial data from a non-relational data structure into a general data format, and return the spatial data in the general data format to the service 210 of the service layer through a data access interface called by the service 210 of the service layer for processing.
In addition, for each service 210 of the service layer, the data access request is initiated by calling a data access interface, the spatial data in the universal data format can be acquired, and the instant use of the spatial data can be realized, so that the access efficiency and the access performance of the spatial data are improved.
In practical applications, referring to fig. 5, the data access server 220 in the electronic map system may include, but is not limited to: data service bus layer, data service layer, data function layer, data model layer and data link layer, wherein:
the data service bus layer is provided with a data service bus module and each data access interface; the data service bus module is used for authenticating the data access request when receiving the data access request initiated by the service of the service layer by calling the data access interface, determining that the authentication of the data access request is passed, and transmitting the request parameters in the data access request to the data service module in the data service layer by calling an internal transmission interface which is provided by the data service layer and corresponds to the data access interface; when receiving the space data in the universal data format returned by the data service module in the data service layer, returning the space data in the universal data format to the service of the service layer for processing through the data access interface called by the service of the service layer;
the data service layer is provided with a data service module and internal transmission interfaces respectively corresponding to the data access interfaces; the data service module is used for carrying out format check on the request parameter when the data service bus module of the data service bus layer calls the request parameter transmitted by the internal transmission interface, and transmitting the request parameter to a corresponding function module in the data function layer based on the function type of the data access interface corresponding to the internal transmission interface after determining that the format check of the request parameter passes; when receiving the space data in the general data format returned by the function module in the data function layer, returning the space data in the general data format to the data service bus module of the data service bus layer through the internal transmission interface called by the data service bus module of the data service bus layer;
the data function layer is provided with function modules corresponding to the function types of the data access interfaces respectively; the function module is used for generating a message for positioning a spatial database requesting access based on database description parameters contained in the request parameters when receiving the request parameters transmitted by the data service module of the data service layer, and transmitting the message and the request parameters to corresponding model modules in the data model layer based on the function types and the parameter types of the request parameters; when an ORM object returned by a model module in the data model layer is received, converting the ORM object into space data in a general data format and returning the space data to a data service module of the data service layer;
the data model layer is provided with at least one model module corresponding to each functional module; the model module is used for generating an object query statement based on the data description parameter contained in the request parameter when receiving the message and the request parameter sent by the functional module of the data functional layer, and transmitting the message and the object query statement to the database connection management module of the data link layer; when receiving an object query result returned by a database connection management module of a data link layer aiming at the object query statement, if determining that a corresponding ORM object is queried according to the object query result, considering that the corresponding ORM object is cached aiming at the spatial data requested to be accessed in a spatial database requested to be accessed, returning the ORM object to a function module in a data function layer, if determining that the corresponding ORM object is not queried according to the object query result, considering that the corresponding ORM object is not cached aiming at the spatial data requested to be accessed in the spatial database requested to be accessed, generating a data query statement based on data description parameters contained in the request parameters, transmitting the data query statement to the database connection management module of the data link layer, and when receiving the spatial data of a non-relational data structure returned by the database connection management module of the data link layer aiming at the data query statement, converting the spatial data of the non-relational data structure into the ORM object and returning the spatial data to the function module of the data function layer;
the data link layer is provided with a database connection management module and a data link; the database connection management module is used for determining a spatial database requesting access based on a message when receiving the message and an object query statement sent by the model module of the data model layer, establishing connection with the spatial database requesting access through a data link, querying a corresponding ORM object in the spatial database establishing connection based on the object query statement, and returning an object query result to the model module of the data model layer; when a data query statement sent by a model module of the data model layer is received, based on the data query statement, in a connected spatial database, querying spatial data of a corresponding non-relational data structure, and returning the queried spatial data of the non-relational data structure to the model module of the data model layer.
Referring to fig. 6, a spatial data processing method provided in the embodiment of the present application is described in further detail below with reference to the data access server 220 shown in fig. 5, and a specific flow of the spatial data processing method provided in the embodiment of the present application is as follows:
step 601: the service 210 of the service layer initiates a data access request by calling a data access interface.
Step 602: when a data access request initiated by calling a data access interface by a service 210 of a service layer is received by a data service bus module of a data service bus layer in a data access server 220 of the data access layer, a stored user access token and a data access range are obtained based on a user identifier in the data access request.
Step 603: the data service bus module of the data service bus layer in the data access server 220 of the data access layer performs user authentication on the user access token in the data access request based on the stored user access token, and performs data authentication on the request parameter in the data access request based on the stored data access range.
Step 604: the data service bus module of the data service bus layer in the data access server 220 of the data access layer determines that the user authentication of the user access token in the data access request passes and the data authentication of the request parameter passes, and determines that the authentication of the data access request passes.
Step 605: the data service bus module of the data service bus layer in the data access server 220 of the data access layer determines an internal transmission interface corresponding to the data access interface called by the service 210 of the service layer, and sends the request parameter in the data access request to the data service layer by calling the internal transmission interface.
Step 606: when the data service module of the data service layer in the data access server 220 of the data access layer receives a request parameter transmitted by the data service bus module of the data service layer through invoking the internal transmission interface, format check is performed on the request parameter.
Step 607: when the data service module of the data service layer in the data access server 220 of the data access layer determines that the format check of the request parameter passes, the request parameter is transmitted to the corresponding function module of the data function layer based on the function type of the data access interface corresponding to the internal transmission interface.
Step 608: when receiving a request parameter transmitted by the data service module of the data access layer, the function module of the data function layer in the data access server 220 of the data access layer generates a message for positioning the spatial database requested to be accessed based on the database description parameter included in the request parameter.
Step 609: the function module of the data function layer in the data access server 220 of the data access layer transmits the message and the request parameter to the corresponding model module of the data model layer based on the function category to which the function module belongs and the parameter type of the request parameter.
Step 610: when the model module of the data model layer in the data access server 220 of the data access layer receives the message and the request parameter transmitted by the function module of the data function layer, an object query statement is generated based on the data description parameter contained in the request parameter.
Step 611: the model module of the data model layer in the data access server 220 of the data access layer transmits the message and the object query statement to the database connection management module of the data link layer.
Step 612: the database connection management module of the data link layer in the data access server 220 of the data access layer determines the spatial database requested to be accessed based on the message when receiving the message and the object query statement transmitted by the model module of the data model layer, and establishes a connection with the spatial database requested to be accessed through the data link.
Step 613: the database connection management module of the data link layer in the data access server 220 of the data access layer queries the corresponding ORM object in the connection-establishing spatial database based on the object query statement.
Step 614: the database of the data link layer in the data access server 220 of the data access layer is connected to the management module, and returns the object query result to the model module of the data model layer.
Step 615: when the model module of the data model layer in the data access server 220 of the data access layer receives the object query result returned by the database connection management module of the data link layer for the object query statement, it determines whether a corresponding ORM object is queried based on the object query result, if yes, step 616 is executed, and if no, step 617 is executed.
Step 616: the model module of the data model layer in the data access server 220 of the data access layer determines that a corresponding ORM object is cached in the spatial database requesting access with respect to the spatial data requesting access, returns the queried ORM object to the function module in the data function layer, and continues to execute step 623.
Step 617: the model module of the data model layer in the data access server 220 of the data access layer determines that a corresponding ORM object is not cached in the spatial database requested to be accessed aiming at the spatial data requested to be accessed, and generates a data query statement based on the data description parameters contained in the request parameters.
Step 618: the model module of the data model layer in the data access server 220 of the data access layer transmits the data query statement to the database connection management module of the data link layer.
Step 619: when receiving a data query statement transmitted by the model module of the data model layer, the database connection management module of the data link layer in the data access server 220 of the data access layer queries the spatial data of the corresponding non-relational data structure in the spatial database for establishing connection based on the data query statement.
Step 620: the database of the data link layer in the data access server 220 of the data access layer is connected to the management module, and returns the spatial data of the queried non-relational data structure to the model module of the data model layer.
Step 621: when the model module of the data model layer in the data access server 220 of the data access layer receives the spatial data of the non-relational data structure returned by the database connection management module of the data link layer, the spatial data of the non-relational data structure is converted into an ORM object based on the object conversion model.
Step 622: the model module of the data model layer in the data access server 220 of the data access layer returns the ORM object to the function module of the data function layer.
Step 623: when receiving the ORM object returned by the model module of the data model layer, the function module of the data function layer in the data access server 220 of the data access layer maps the ORM object into the spatial data in the general data format based on the data mapping model.
Step 624: the functional module of the data function layer in the data access server 220 of the data access layer returns the spatial data in the generic data format to the data service module of the data service layer.
Step 625: when the data service module of the data service layer in the data access server 220 of the data access layer receives the spatial data in the generic data format returned by the function module of the data function layer, the spatial data in the generic data format is returned to the service bus layer through the internal transmission interface called by the data service bus layer.
Step 626: when the data service module of the service bus layer in the data access server 220 of the data access layer receives the spatial data in the generic data format returned by the data service module of the data service layer, the spatial data in the generic data format is returned to the service 210 of the service layer through the data access interface called by the service 210 of the service layer.
Step 627: when receiving the spatial data in the generic data format returned by the data access server 220 of the data access layer, the service 210 of the service layer processes the spatial data in the generic data format.
Based on the foregoing embodiments, an embodiment of the present application provides a spatial data processing apparatus, and referring to fig. 7, a spatial data processing apparatus 700 provided in an embodiment of the present application at least includes:
a request receiving unit 701, configured to receive a data access request initiated by invoking a data access interface;
a data obtaining unit 702, configured to obtain, based on a data access request, spatial data requested to be accessed from a spatial database requested to be accessed, where the spatial data in the spatial database is stored in a non-relational data structure;
a data conversion unit 703 for converting the spatial data from a non-relational data structure to a generic data format;
and a data returning unit 704, configured to return the spatial data in the generic data format through the data access interface.
In a possible implementation manner, before obtaining the spatial data requested to be accessed from the spatial database requested to be accessed based on the data access request, the request receiving unit 701 is further configured to:
and authenticating the data access request and determining that the data access request passes the authentication.
In a possible implementation manner, when authenticating the data access request and determining that the data access request is authenticated, the request receiving unit 701 is specifically configured to:
based on the user identification in the data access request, acquiring a stored user access token and a data access range;
based on the stored user access token, performing user authentication on the user access token in the data access request, and based on the stored data access range, performing data authentication on the request parameter in the data access request;
and when the user authentication of the user access token in the data access request is determined to pass and the data authentication of the request parameter passes, judging that the authentication of the data access request passes.
In a possible implementation manner, before acquiring, based on the data access request, the spatial data requested to be accessed from the spatial database requested to be accessed, the data acquiring unit 702 is further configured to:
and carrying out format check on the request parameters in the data access request, and determining that the format check of the request parameters is passed.
In a possible implementation manner, when acquiring, based on a data access request, spatial data requested to be accessed from a spatial database requested to be accessed, the data acquiring unit 702 is specifically configured to:
determining a spatial database requesting access based on database description parameters contained in request parameters in the data access request;
generating a data query statement based on data description parameters contained in request parameters in the data access request;
and acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data query statement.
In a possible implementation manner, before generating the data query statement based on the data description parameter included in the request parameter in the data access request, the data obtaining unit 702 is further configured to:
generating an object query statement based on data description parameters contained in request parameters in the data access request;
and determining that the spatial database requesting access does not cache a corresponding ORM object for the spatial data requesting access based on the object query statement.
In a possible implementation, when converting the spatial data from the non-relational data structure to the generic data format, the data conversion unit 703 is specifically configured to:
converting the spatial data of the non-relational data structure into an ORM object based on an object conversion model, wherein the object conversion model is established based on the conversion relation between the spatial data of the non-relational data structure and the ORM object;
and mapping the ORM object into the spatial data in the universal data format based on a data mapping model, wherein the data mapping model is established based on the mapping relation between the ORM object and the spatial data in the universal data format.
It should be noted that the principle of the spatial data processing apparatus 700 provided in the embodiment of the present application for solving the technical problem is similar to that of the spatial data processing method provided in the embodiment of the present application, and therefore, for implementation of the spatial data processing apparatus 700 provided in the embodiment of the present application, reference may be made to implementation of the spatial data processing method provided in the embodiment of the present application, and repeated details are not repeated.
Based on the foregoing embodiment, an embodiment of the present application further provides a spatial data processing apparatus, and referring to fig. 8, a spatial data processing apparatus 800 provided in an embodiment of the present application at least includes: the spatial data processing method provided by the embodiment of the present application is implemented by the processor 801, the memory 802, and a computer program stored on the memory 802 and operable on the processor 801, when the computer program is executed by the processor 801.
It should be noted that the spatial data processing apparatus 800 shown in fig. 8 is only an example, and should not bring any limitation to the functions and the application range of the embodiments of the present application.
The spatial data processing apparatus 800 provided by the embodiment of the present application may further include a bus 803 connecting different components (including the processor 801 and the memory 802). Bus 803 represents one or more of any of several types of bus structures, including a memory bus, a peripheral bus, a local bus, and so forth.
The Memory 802 may include readable media in the form of volatile Memory, such as Random Access Memory (RAM) 8021 and/or cache Memory 8022, and may further include Read Only Memory (ROM) 8023.
Spatial data processing device 800 may also communicate with one or more external devices 804 (e.g., keyboard, remote control, etc.), with one or more devices that enable a user to interact with spatial data processing device 800 (e.g., cell phone, computer, etc.), and/or with any device that enables spatial data processing device 800 to communicate with one or more other spatial data processing devices 800 (e.g., router, modem, etc.). This communication may be through an Input/Output (I/O) interface 805. Also, the spatial data processing apparatus 800 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public Network, such as the internet) via the Network adapter 806. As shown in FIG. 8, a network adapter 806 communicates with the other modules of the spatial data processing apparatus 800 via the bus 803. It should be understood that although not shown in fig. 8, other hardware and/or software modules may be used in conjunction with spatial data processing apparatus 800, including but not limited to: microcode, device drivers, redundant processors, external disk drive Arrays, RAID (Redundant Arrays of Independent Disks) subsystems, tape drives, and spatial data backup storage subsystems, to name a few.
After the spatial data processing method, apparatus, and device provided in the embodiments of the present application are introduced, a computer-readable storage medium provided in the embodiments of the present application is introduced next.
The embodiment of the application provides a computer-readable storage medium, which stores computer instructions, and the computer instructions, when executed by a processor, implement the spatial data processing method provided by the embodiment of the application. Specifically, the executable program may be built in the spatial data processing apparatus 800, so that the spatial data processing apparatus 800 may implement the spatial data processing method provided by the embodiment of the present application by executing the built-in executable program.
Furthermore, the spatial data processing method provided in the embodiment of the present application may also be implemented as a program product, where the program product includes program code for causing the spatial data processing apparatus 800 to execute the spatial data processing method provided in the embodiment of the present application when the program product is run on the spatial data processing apparatus 800.
The program product provided by the embodiments of the present application may be any combination of one or more readable media, wherein the readable media may be a readable signal medium or a readable storage medium, and the readable storage medium may be, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof, and specifically, more specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a RAM, a ROM, an Erasable Programmable Read-Only Memory (EPROM), an optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product provided by the embodiment of the application can adopt a CD-ROM and comprises program codes, and can run on a computing device. However, the program product provided by the embodiments of the present application is not limited thereto, and in the embodiments of the present application, the readable storage medium may be any tangible medium that can contain or store a program, which can be used by or in connection with an instruction execution system, apparatus, or device.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
Claims (9)
1. A spatial data processing method is applied to an electronic map system, and comprises the following steps:
receiving space data of a target type of a target service, and calling a data access request initiated by a data access interface corresponding to the target type; wherein, the request parameters in the data access request comprise database description parameters and data description parameters;
determining a spatial database requesting access from among a plurality of spatial databases of the electronic map system based on the database description parameters; the spatial data in the spatial database is stored by adopting a non-relational data structure;
generating a data query statement based on the data description parameters;
acquiring the spatial data requested to be accessed from the spatial database requested to be accessed based on the data query statement;
and converting the spatial data from a non-relational data structure into a universal data format, and returning the spatial data in the universal data format to the target service through the data access interface.
2. The spatial data processing method of claim 1, wherein before determining a spatial database to request access from among a plurality of spatial databases of the electronic map system based on the database description parameter, further comprising:
and authenticating the data access request, and determining that the data access request passes the authentication.
3. The spatial data processing method of claim 2, wherein authenticating the data access request and determining that the data access request is authenticated comprises:
based on the user identification in the data access request, acquiring a stored user access token and a data access range;
based on the stored user access token, performing user authentication on the user access token in the data access request, and based on the stored data access range, performing data authentication on the request parameter in the data access request;
and when the user authentication of the user access token in the data access request is determined to pass and the data authentication of the request parameters passes, judging that the data access request passes the authentication.
4. The spatial data processing method according to any one of claims 1 to 3, wherein, before determining a spatial database requesting access from among a plurality of spatial databases of the electronic map system based on the database description parameter, further comprising:
and carrying out format check on the request parameters in the data access request, and determining that the format check of the request parameters is passed.
5. The spatial data processing method according to claim 1, wherein before generating the data query statement based on the data description parameter included in the request parameter in the data access request, the method further comprises:
generating an object query statement based on data description parameters contained in request parameters in the data access request;
and determining that the spatial database requesting access does not cache a corresponding Object Relational Mapping (ORM) object for the spatial data requesting access based on the object query statement.
6. The spatial data processing method of any of claims 1 to 3, wherein converting the spatial data from a non-relational data structure to a generic data format comprises:
converting the spatial data of the non-relational data structure into an ORM object based on an object conversion model, wherein the object conversion model is established based on the conversion relation between the spatial data of the non-relational data structure and the ORM object;
and mapping the ORM object to the spatial data in the general data format based on a data mapping model, wherein the data mapping model is established based on the mapping relation between the ORM object and the spatial data in the general data format.
7. A spatial data processing device is applied to an electronic map system, and the device comprises:
the request receiving unit is used for receiving the space data of the target type of the target service and calling a data access request initiated by a data access interface corresponding to the target type; wherein, the request parameters in the data access request comprise database description parameters and data description parameters;
the data acquisition unit is used for determining a spatial database requesting access from a plurality of spatial databases of the electronic map system based on the database description parameters; the spatial data in the spatial database is stored by adopting a non-relational data structure; generating a data query statement based on the data description parameters; acquiring the space data requested to be accessed from a space database requested to be accessed based on the data query statement;
a data conversion unit for converting the spatial data from a non-relational data structure to a generic data format;
and the data return unit is used for returning the spatial data in the general data format to the target service through the data access interface.
8. A spatial data processing apparatus, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the spatial data processing method according to any one of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium storing computer instructions which, when executed by a processor, implement the spatial data processing method of any one of claims 1-6.
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