CN103177016A - Visiting method and device for relational database - Google Patents
Visiting method and device for relational database Download PDFInfo
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- CN103177016A CN103177016A CN2011104360002A CN201110436000A CN103177016A CN 103177016 A CN103177016 A CN 103177016A CN 2011104360002 A CN2011104360002 A CN 2011104360002A CN 201110436000 A CN201110436000 A CN 201110436000A CN 103177016 A CN103177016 A CN 103177016A
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Abstract
The invention discloses a visiting method and a device for a relational database. The visiting method and the device for the relational database achieve a novel static mapping mechanism, are capable of quickly and accurately achieving the visit for a database, and reduce error rate in visit operation and cost consumptions in error correction. The visiting method for the relational database includes the following steps: setting service configuration information and data table configuration information, building a positioning array according to selected visiting parameters and the labels of array elements in the positioning array indicate the positions of the visiting parameters in an application service entity class, obtaining keyword information from the application service entity class, obtaining visiting expressions and the visiting parameters from the service configuration information according to the keyword information, obtaining the labels of the array elements from the data table configuration information according to the visiting parameters, finding numerical values of the visiting parameters from the entity class by using the labels, setting the numerical values of the visiting parameters into the visiting expressions, and executing the visiting expressions in the relational database.
Description
Technical field
The present invention relates to database technical field, particularly a kind of relevant database access method and device.
Background technology
Relevant database is one of indispensable ingredient for present most infosystem.Be solution commonly used at present and utilize the application system access relation type database based on Java, this solution has following dual mode usually:
First kind of way is directly to adopt the Java database to connect (Java DataBase Connectivity, JDBC) relevant database is conducted interviews; The second way is to adopt to have object relationship and reflect the project of increasing income of (Object-Relational Mapping, ORM) framework (as increase income project iBatis, Hibernate etc.) relevant database is conducted interviews.
There is following defective at least in above-mentioned existing solution:
Under first kind of way, need Structured Query Language (SQL) (Structured Query Language, the SQL) statement that the developer manually will carry out to be integrated in program code, error rate is higher, and the cost consumption when checking debug is also higher;
Under the second way, configuration operation is too complicated, and because the reflection characteristic that has adopted Java language is carried out relationship map, caused unnecessary loss on system performance, for example, searched in relationship map when carrying out the required numerical value of SQL statement, adopt the information searching of character string forms to this numerical value, each bit in the compare string string, cause resource consumption large by turn, and search efficiency is low.
Summary of the invention
A kind of relevant database access method provided by the invention and device are with the problem that in the solution that solves existing access relation type database, error rate is high, cost for correcting error is high and the problem that causes unnecessary loss to system performance.
For achieving the above object, the embodiment of the present invention has adopted following technical scheme:
The embodiment of the present invention provides a kind of relevant database access method, and described method comprises:
Service configuration information and tables of data configuration information are set, and, set up the location array according to selected access parameter, the position of the label of array element indication access parameter in the applied business entity class in the array of described location,
Obtain keyword message from the entity class of applied business according to the request of access generation;
Obtain the access statement of required execution and carry out the required access parameter of this access statement from service configuration information according to described keyword message;
Obtain the label of described array element according to described access parameter from the tables of data configuration information, and utilize described label to find the numerical value of access parameter from described entity class;
The numerical value of described access parameter is arranged in described access statement, and carries out described access statement in relevant database, realize the access to relevant database.
The embodiment of the present invention also provides a kind of relevant database access means, and described device comprises:
Setting unit is used for arranging service configuration information and tables of data configuration information, and, set up the location array according to selected access parameter, the position of the label of array element indication access parameter in the applied business entity class in the array of described location;
The key word acquiring unit is used for obtaining keyword message from applied business according to the entity class that request of access generates;
Visit information is searched the unit, is used for obtaining the access statement of required execution and carrying out the required access parameter of this access statement from service configuration information according to described keyword message; And, obtain the label of described array element according to described access parameter from the tables of data configuration information, and utilize described label to find the numerical value of access parameter from described entity class;
The access performance element is used for the numerical value of described access parameter is arranged on described access statement, and carries out described access statement in relevant database, realizes the access to relevant database.
The beneficial effect of the embodiment of the present invention is:
The technical scheme of the embodiment of the present invention utilizes configuration information to obtain accessing statement by configuration information is set, the cost consumption when significantly having reduced error rate in the accessing operation and error correction; And this programme is chosen and sets up access parameter and locate the related of array by access parameter, utilize the label of array element can inquire the numerical value of access parameter, realized a kind of novel static mappings mechanism, be no longer dependent on the reflection characteristic of Java language, avoided the resource consumption that adopts string searching to bring, the access of fulfillment database rapidly and accurately.
Description of drawings
A kind of relevant database access method process flow diagram that Fig. 1 provides for the embodiment of the present invention one;
A kind of relevant database access means structural drawing that Fig. 2 provides for the embodiment of the present invention two.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, be a kind of relevant database access method that the embodiment of the present invention one provides, the method comprises:
11: service configuration information and tables of data configuration information are set, and, set up the location array according to selected access parameter, the position of the label of array element indication access parameter in the applied business entity class in the array of described location.
According to the data rows in tables of data, above-mentioned access parameter is set in the embodiment of the present invention, for the data rows of tables of data arranges the row title, selected access parameter is the row title of data rows.Adopting this mode is that what to consider each data rows storage in tables of data is all the data with same attribute, as time data, name data, what store in each data line is each concrete data content, utilize the information of data rows as access parameter, help to improve search efficiency, simplify query manipulation.
further, adopt the position of access parameter in the applied business entity class, form location of array in the present embodiment, in the location array of setting up in the number of array element and tables of data the number of the data rows of required access identical, in the array of described location, data of the label of array element indication are listed in the position in the applied business entity class, under this mode, when searching the numerical value of access parameter in entity class, with the label (i.e. round values) of array element as the index of searching, the resource consumption of having avoided adopting string searching to cause reaches greatly the low problem of search efficiency, optimized the performance of system.
This programme is that in relevant database, each tables of data is set up a tables of data configuration information, and this tables of data configuration information comprises the row title of the data rows in table, the data type of the sign of this data rows (id) and this data rows.In the present embodiment, the id of this data rows adopts the label of array element corresponding to data rows.
For example, the example of a tables of data configuration information is as follows:
Fields＝id#0#BIGINT，toid#1#BIGINT，state#2#TINYINT (1)
Adopt CSV between the information of different pieces of information row, adopt " # " number separation between the every terms of information of same data rows.
Above-mentioned tables of data configuration information has indicated tables of data to have three row, and the title of data rows is respectively id, toid and state, and the label of the array element that data rows id is corresponding is 0, and the data type that data rows id uses is BIGINT; The label of the array element that data rows toid is corresponding is 1, and the data type that data rows toid uses for the data type of using is; The label of the array element that data rows state is corresponding is 1, and the data type that data rows state uses is TINYINT.
This programme be every type accessing operation (as upgrade, insert, search, deletion etc.) service configuration information is set, comprise keyword message, access statement and the required access parameter of this access statement in described service configuration information.For relevant database, this access statement is SQL statement.Article one, the example of service configuration information can be as follows:
SQL_updateByUserId＝update?cin_offlinemessage?set?state＝1?where?toid＝？and?state＝0#toid (2)
When the access statement of required execution is SQL statement, the prefix of " SQL_ " is set for this service configuration information, keyword message in above-mentioned service configuration information is " updateByUserId ", and the access type that this service configuration information is corresponding is the renewal operation to data rows toid in tables of data.
The access statement that comprises in this service configuration information for " update cin_offlinemessage set state=1 where toid=? and state=0 ", required access parameter is " toid ".
Further, also comprise parameter identification in above-mentioned service configuration information, above in example set parameter identification be after " # " and access parameter are arranged on " # ", utilize this parameter identification can fast finding to the access parameter.
Different to the service configuration information that dissimilar accessing operation is set, for example, the corresponding service configuration information example of renewal operation to data rows toid and id in tables of data is as follows simultaneously:
SQL_updateToidAndIdByUserId＝update?cin_offlinemessage?set?id＝？，toid＝？where?state＝0#id，userid
Wherein, keyword message is " updateToidAndIdByUserId ", the access statement of required execution be " update cin_offlinemessage set id=?, toid=? where state=0 ", access parameter is " id, userid ".
12: obtain keyword message from the entity class of applied business according to the request of access generation.
DBEntityOfflinemessage?msg＝new?DBEntityOfflinemessage()；
msg.setToid(100000)；
Wherein, having defined this entity class in the statement part is DBEntityOfflinemessage, partly is set to 100000 by the numerical value of msg.setToid (100000) access parameter toid in assignment.
Corresponding with above-mentioned tables of data configuration information (1) and service configuration information (2), the example of above-mentioned entity class DBEntityOfflinemessage can be as follows:
Can be seen by the example of above-mentioned DBEntityOfflinemessage and utilize array element obj[0 in the array obj of location], obj[1] and obj[2] label location access parameter, i.e. the row title of three of tables of data data rows.
Access component is resolved above-mentioned entity class, knows keyword message, and perhaps, applied business is sent to access component with above-mentioned keyword message, makes access component know this keyword message.
13: obtain the access statement of required execution and carry out the required access parameter of this access statement from service configuration information according to described keyword message.
To above-mentioned service configuration information (2), resulting access statement be " update cin_offlinemessage set state=1 where toid=? and state=0 ", access parameter is " toid ".
14: obtain the label of described array element according to access parameter from the tables of data configuration information, and utilize described label to find the numerical value of access parameter from described entity class.
To above-mentioned tables of data configuration (1), the label of the data element that obtains according to access parameter " toid " is 1.
15: the numerical value of described access parameter is arranged in described access statement, and carries out described access statement in relevant database, realize the access to relevant database.
Further, in the present embodiment according to data type indicated in the tables of data configuration information, the numerical value of described access parameter is arranged in described access statement, for example, according to the information in above-mentioned tables of data configuration (1), be arranged in described access statement according to the data type of the BIGINT numerical value with access parameter.This processing mode is to be the data of what type because the field in database has type need to specify in parameters, by data type being arranged on the tables of data configuration information, carry out the assignment of parameter according to specified data type, can realize fast assign operation, guarantee the normal execution of access statement.
Further, when after the access to relevant database, if there is the access result data, if the result data that inquiry obtains, access component can be mapped as this result data the Java object, is back to the applied business of operation layer to carry out subsequent treatment.
From the above mentioned, the technical scheme of the embodiment of the present invention utilizes configuration information to obtain accessing statement by configuration information is set, the cost consumption when significantly having reduced error rate in the accessing operation and error correction; And this programme is chosen and sets up access parameter and locate the related of array by access parameter, utilize the label of array element can inquire the numerical value of access parameter, realized a kind of novel static mappings mechanism, be no longer dependent on the reflection characteristic of Java language, avoided the resource consumption that adopts string searching to bring, the access of fulfillment database rapidly and accurately.
The embodiment of the present invention two also provides a kind of relevant database access means, and referring to Fig. 2, described device comprises:
Key word acquiring unit 22 is used for obtaining keyword message from applied business according to the entity class that request of access generates;
Visit information is searched unit 23, is used for obtaining the access statement of required execution and carrying out the required access parameter of this access statement from service configuration information according to described keyword message; And, obtain the label of described array element according to described access parameter from the tables of data configuration information, and utilize described label to find the numerical value of access parameter from described entity class;
Further, described setting unit 21 arranges the row title for data rows, set tables of data configuration information comprises the label of array element corresponding to row title, the data rows of data rows and the described access parameter of data type that data rows adopts, and selected access parameter is the row title of data rows.
Described access performance element 24 comprises that parameter value arranges module, is used for according to the indicated data type of tables of data configuration information, and the numerical value of described parameter is arranged in described access statement.
Described setting unit 21 comprises keyword message, access statement, parameter identification and the required access parameter of this access statement for the accessing operation of every type arranges a service configuration information in described service configuration information,
Described visit information is searched unit 23 and is comprised access statement and parameter is searched module and parameter value is searched module.This access statement and parameter are searched module, are used for finding presently used service configuration information according to described keyword message from service configuration information, obtain the access statement of required execution in the service configuration information that finds.This parameter value is searched module, is used at the service configuration information that finds, and obtains carrying out the required access parameter of this access statement according to described parameter identification.
In apparatus of the present invention embodiment, the specific works mode of each unit can be referring to the embodiment of the method for the embodiment of the present invention.
From the above mentioned, the technical scheme of the embodiment of the present invention utilizes configuration information to obtain accessing statement by configuration information is set, the cost consumption when significantly having reduced error rate in the accessing operation and error correction; And this programme is chosen and sets up access parameter and locate the related of array by access parameter, utilize the label of array element can inquire the numerical value of access parameter, realized a kind of novel static mappings mechanism, be no longer dependent on the reflection characteristic of Java language, avoided the resource consumption that adopts string searching to bring, the access of fulfillment database rapidly and accurately.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. relevant database access method, it is characterized in that, service configuration information and tables of data configuration information are set, and, set up the location array according to selected access parameter, the position of the label of array element indication access parameter in the applied business entity class in the array of described location, described method comprises:
Obtain keyword message from the entity class of applied business according to the request of access generation;
Obtain the access statement of required execution and carry out the required access parameter of this access statement from service configuration information according to described keyword message;
Obtain the label of described array element according to described access parameter from the tables of data configuration information, and utilize described label to find the numerical value of access parameter from described entity class;
The numerical value of described access parameter is arranged in described access statement, and carries out described access statement in relevant database, realize the access to relevant database.
2. method according to claim 1, is characterized in that, for data rows arranges the row title, described tables of data configuration information comprises the label of array element corresponding to row title, the data rows of data rows and the data type that data rows adopts;
Selected access parameter is the row title of data rows.
3. method according to claim 2, is characterized in that,
In the location array of setting up in the number of array element and tables of data the number of the data rows of required access identical, in the array of described location, data of the label of array element indication are listed in the position in the applied business entity class.
4. method according to claim 2, is characterized in that, described numerical value with access parameter is arranged on described access statement and comprises:
According to data type indicated in the tables of data configuration information, the numerical value of described access parameter is arranged in described access statement.
5. method according to claim 1, is characterized in that, for the accessing operation of every type arranges a service configuration information, comprises keyword message, access statement and the required access parameter of this access statement in described service configuration information,
Describedly obtain the access statement of required execution and carry out the required access parameter of this access statement comprising from service configuration information according to described keyword message:
Find presently used service configuration information according to described keyword message from service configuration information;
Obtain the access statement of required execution and carry out the required access parameter of this access statement in the service configuration information that finds.
6. method according to claim 5, is characterized in that, also comprises parameter identification in described service configuration information,
Find in service configuration information according to described parameter identification and carry out the required access parameter of access statement.
7. a relevant database access means, is characterized in that, described device comprises:
Setting unit is used for arranging service configuration information and tables of data configuration information, and, set up the location array according to selected access parameter, the position of the label of array element indication access parameter in the applied business entity class in the array of described location;
The key word acquiring unit is used for obtaining keyword message from applied business according to the entity class that request of access generates;
Visit information is searched the unit, is used for obtaining the access statement of required execution and carrying out the required access parameter of this access statement from service configuration information according to described keyword message; And, obtain the label of described array element according to described access parameter from the tables of data configuration information, and utilize described label to find the numerical value of access parameter from described entity class;
The access performance element is used for the numerical value of described access parameter is arranged on described access statement, and carries out described access statement in relevant database, realizes the access to relevant database.
8. device according to claim 7, is characterized in that,
Described setting unit is that data rows arranges the row title, and set tables of data configuration information comprises the label of array element corresponding to row title, the data rows of data rows and the data type that data rows adopts, and selected access parameter is the row title of data rows.
9. device according to claim 8, is characterized in that,
Described access performance element comprises that parameter value arranges module, is used for according to the indicated data type of tables of data configuration information, and the numerical value of described parameter is arranged in described access statement.
10. device according to claim 7, it is characterized in that, described setting unit is that the accessing operation of every type arranges a service configuration information, comprises keyword message, access statement, parameter identification and the required access parameter of this access statement in described service configuration information
Described visit information is searched the unit and is comprised access statement and parameter is searched module and parameter value is searched module,
Described access statement and parameter are searched module, are used for finding presently used service configuration information according to described keyword message from service configuration information, obtain the access statement of required execution in the service configuration information that finds;
Described parameter value is searched module, is used at the service configuration information that finds, and obtains carrying out the required access parameter of this access statement according to described parameter identification.
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| CN107832401A (en) * | 2017-11-01 | 2018-03-23 | 郑州云海信息技术有限公司 | Database data access method, system, device and computer-readable recording medium |
| CN109271403A (en) * | 2018-09-28 | 2019-01-25 | 北京京东金融科技控股有限公司 | A kind of operating method of data query, device, medium and electronic equipment |
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| CN114397966A (en) * | 2022-01-06 | 2022-04-26 | 山东浪潮科学研究院有限公司 | Keyword error correction prompting method and device for database |
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| CN105573774A (en) * | 2014-11-05 | 2016-05-11 | 中国银联股份有限公司 | Application parameter managing and configuring method |
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| CN109271403A (en) * | 2018-09-28 | 2019-01-25 | 北京京东金融科技控股有限公司 | A kind of operating method of data query, device, medium and electronic equipment |
| CN109739484A (en) * | 2018-12-28 | 2019-05-10 | 北京神州绿盟信息安全科技股份有限公司 | A kind of relationship of assets model construction system, method and storage medium |
| CN109739484B (en) * | 2018-12-28 | 2022-04-05 | 绿盟科技集团股份有限公司 | Asset relationship model construction system, method and storage medium |
| CN114397966A (en) * | 2022-01-06 | 2022-04-26 | 山东浪潮科学研究院有限公司 | Keyword error correction prompting method and device for database |
| CN114218256A (en) * | 2022-02-21 | 2022-03-22 | 恒生电子股份有限公司 | Access statement processing method, device, equipment and storage medium |
| CN114218256B (en) * | 2022-02-21 | 2022-05-27 | 恒生电子股份有限公司 | Access statement processing method, device, equipment and storage medium |
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