CN104346466A - Method and device of adding new attribute data in database - Google Patents
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- CN104346466A CN104346466A CN201410645814.0A CN201410645814A CN104346466A CN 104346466 A CN104346466 A CN 104346466A CN 201410645814 A CN201410645814 A CN 201410645814A CN 104346466 A CN104346466 A CN 104346466A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/80—Information retrieval; Database structures therefor; File system structures therefor of semi-structured data, e.g. markup language structured data such as SGML, XML or HTML
- G06F16/83—Querying
Abstract
The invention discloses a method and a device of adding new attribute data in a database. The method comprises the following steps that a message is obtained, wherein the message comprises a request of adding the new attribute data; the message is analyzed, and the new attribute data is analyzed to attributes of an MappedClob data type object; the MappedClob data type object is converted to an extensible markup language XML format, an extensible markup language XML text is established, and the new attribute data is stored in the extensible markup language XML text; the extensible markup language XML text is stored in a position described by a reserved field in a corresponding data entity in the database. By adopting a technical scheme provided by the invention, the problem of easiness in causing disorder of a database list structure when the new attribute data is added in the database in the prior art can be avoided.
Description
Technical field
The present invention relates to software technology field, particularly relate in a kind of database the method and apparatus of the data that Add New Attribute.
Background technology
Database is core and the basis of infosystem, an outstanding database design can be got up the principle organic organization of data a large amount of in infosystem according to data model, the function of storage, maintenance, retrieve data is provided, makes infosystem can facilitate, from database, obtain required information in time, exactly.Database design must meet unified data standard, and forward-looking property extendability is considered, adapts to the various changes that Future Services Development brings.Whether outstanding database design is is one of whole Success of Information System whether most critical factor.
What traditional database design often adopted is top-down based on business demand drive pattern, lacks integrity design consider database design.The table structure of database is based on demand analysis Outline Design completely.Perhaps can meet current business model based on this Design Mode, system also can be made on schedule to reach the standard grade smoothly.But, a big-and-middle-sized infosystem can not terminate because once successfully reaching the standard grade, after reaching the standard grade, business personnel can constantly propose new business demand based on this system on the contrary, namely can to the data that Add New Attribute in database, this new demand that can constantly bring database table structure to adjust.
But in current technology, during the data that Add New Attribute in database, the adjustment of database table structure easily brings the problem of database table structure confusion, thus easily causes production data to be lost, and causes serious consequence.
Summary of the invention
In view of this, the invention provides in a kind of database the method and apparatus of the data that Add New Attribute, in order to avoid the problem of in prior art, new attribute data being added to the database table structure confusion easily brought in database, and then the problem that easily causes production data to be lost in prior art can be avoided.
For achieving the above object, the invention provides following technical scheme:
A method for the data that Add New Attribute in database, comprising:
Obtain message, described message comprises the request of the data that Add New Attribute;
Analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
Described MappedClob data type object is converted to expandable mark language XML form, sets up expandable mark language XML text, described new attribute data is stored in described expandable mark language XML text;
By the position that reserved field in data entity corresponding in described expandable mark language XML text storage to described database describes.
Preferably, described message is obtained from message interface.
Preferably, described MappedClob is the Java data type corresponding with database character large objects CLOB data type.
Preferably, before described acquisition message, also comprise:
Have in the described data entity increasing described new attribute data demand add described reserved field describe; Described reserved field is described as character large objects CLOB data type attribute.
Preferably, call the method for asXML function, described MappedClob data type object is converted to expandable mark language XML form.
Preferably, described new attribute data is stored in expandable mark language XML text by the mode defining label, and the mode of described definition label comprises: the title of definition label and data type, and is described label assignment.
Preferably, described reserved field is described as character large objects CLOB data type attribute.
Preferably, by calling Ibatis data access layer operation, by the position that reserved field in data entity corresponding in described expandable mark language XML text storage to described database describes.
A device for the data that Add New Attribute in database, comprising:
Receive message unit, for obtaining message, described message comprises the request of the data that Add New Attribute;
Packet parsing unit, for analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
New attribute data storage unit, for described MappedClob data type object is converted to expandable mark language XML form, sets up expandable mark language XML text, and described new attribute data is stored in described expandable mark language XML text;
Expandable mark language XML text storage unit, for the position described by reserved field in data entity corresponding in described expandable mark language XML text storage to described database.
Preferably, also comprise:
Reserved field describe set up unit, for have in the described data entity increasing described new attribute data demand add described reserved field description; Described reserved field is described as character large objects CLOB data type attribute.
Known via above-mentioned technical scheme, compared with prior art, the invention provides in a kind of database the method and apparatus of the data that Add New Attribute.Adopt in database provided by the invention the method and apparatus of the data that Add New Attribute, after getting the message comprising the request of data that Adds New Attribute, analytic message, described new attribute data is resolved to the attribute of MappedClob data type object, then described MappedClob data type object is converted to expandable mark language XML form, set up expandable mark language XML text, described new attribute data is stored in described expandable mark language XML text, finally, the described expandable mark language XML text of described new attribute data will be stored, store the position that in corresponding data entity in a database, reserved field describes, thus realize new attribute data to add in database.Technical scheme provided by the invention, new attribute data is added to the position that in database, in corresponding data entity, reserved field describes, need not change the structure of data entity in database (comprising tables of data), thus the problem of in prior art, new attribute data being added to the database table structure confusion easily brought in database can be avoided, and then the problem that easily causes production data to be lost in prior art can be avoided, provide safeguard during Added Business demand faced by follow-up system, the security of guarantee information system and database.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The process flow diagram of the method for the data that Add New Attribute in a kind of database that Fig. 1 provides for the embodiment of the present invention;
The process flow diagram of the method for the data that Add New Attribute in another database that Fig. 2 provides for the embodiment of the present invention;
The structural drawing of the device of the data that Add New Attribute in a kind of database that Fig. 3 provides for the embodiment of the present invention;
The structural drawing of the device of the data that Add New Attribute in another database that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment one
Refer to Fig. 1, the process flow diagram of the method for the data that Add New Attribute in a kind of database that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the method comprises:
Step S101, obtain message, described message comprises the request of the data that Add New Attribute;
Concrete, obtain described message from message interface, this message comprises the request of the data that Add New Attribute, and this request comprises the information of new attribute data.
Step S102, analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
Concrete, described MappedClob is the Java data type corresponding with the CLOB of database (Character Large Object, character large objects) data type.CLOB data type is a kind of database datatype, for storing larger text.
Step S103, described MappedClob data type object is converted to XML (Extensible Markup Language, extend markup language) form, sets up XML text, described new attribute data is stored in described XML text;
Concrete, optionally, call the method for asXML function, described MappedClob data type object is converted to expandable mark language XML form.Concrete, asXML function is self-defining function MappedClob data object being converted to XML text of the present invention.
Concrete, described new attribute data is stored in expandable mark language XML text by the mode defining label, and the mode of described definition label comprises: the title of definition label and data type, and is described label assignment.The type of label, optionally, comprises numeral, character and date three types.Example is as follows:
Label tag1 is character types in this example, storing character string " hello world "; Label tag2 is numeric type, stores numeral 87832.323; Label tag3 is date type, stores date 2013-03-2912:44:32.
Step S104, by the position that reserved field in data entity corresponding in described expandable mark language XML text storage to described database describes;
Concrete, described reserved field is described as the CLOB data type attribute of database, is arranged in database data entity.Optionally, by calling Ibatis data access layer operation, by the position that reserved field in data entity corresponding in described XML text storage to described database describes.Ibatis mono-word derives from the combination of " internet " and " abatis ", it is open source code project, also claim MyBatis, be one and map the Persistence Layer Framework supporting Java based on SQL (Structured Query Language, Structured Query Language (SQL)).
The technical scheme that the embodiment of the present invention one provides, after getting the message comprising the request of data that Adds New Attribute, analytic message, described new attribute data is resolved to the attribute of MappedClob data type object, then described MappedClob data type object is converted to expandable mark language XML form, set up expandable mark language XML text, described new attribute data is stored in described expandable mark language XML text, finally, the described expandable mark language XML text of described new attribute data will be stored, store the position that in corresponding data entity in a database, reserved field describes, thus realize new attribute data to add in database.The technical scheme that the embodiment of the present invention one provides, new attribute data is added to the position that in database, in corresponding data entity, reserved field describes, need not change the structure of data entity in database (comprising tables of data), thus the problem of in prior art, new attribute data being added to the database table structure confusion easily brought in database can be avoided, and then the problem that easily causes production data to be lost in prior art can be avoided, provide safeguard during Added Business demand faced by follow-up system, the security of guarantee information system and database.
It should be noted that, the technical scheme that implementing the invention described above embodiment one provides needs to possess certain prerequisite, please continue to consult the specific embodiment of the invention two.
Embodiment two
Refer to Fig. 2, the process flow diagram of the method for the data that Add New Attribute in another database that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, the method comprises:
Step S201, have in the data entity increasing new attribute data demand add reserved field describe;
Concrete, database comprises multiple data entity, adds described reserved field and describe in the data entity having Added Business demand (namely have and increase new attribute data demand).Described reserved field describes, concrete, is CLOB data type attribute.CLOB data type attribute " reserved field descriptions " is added for doing reserved preparation to following attribute information expansion in the entity being easy to exist Future Data expansion demand in database design in invention.
Concrete, described step S201 comprises:
Obtain the request adding CLOB data type attribute " reserved field description ";
Obtain pre-data entity position of adding CLOB data type attribute " reserved field description ";
Determine the data entity corresponding with described data entity position, set up in described data entity " the reserved field description " of CLOB data type attribute.
Such as, by the key message of client entity, as customer number, customer name, sex, client's grading system, customer priorities product, Client Work unit, customer households address, client's educational background grades etc. are crucial determines the base attribute of attribute as entity, add " the reserved field description " of a CLOB data type attribute for carrying following uncertain attribute simultaneously, when having new demand data (as added customer telephone number, client's birthday) time do not need change database table structure, the XML text that only need carry in " reserved field description " adds new tag entry.For imagery represents, now for an example, refer to table 1 and table 2, table 1 is the structure form of the data entity of prior art, and table 2 is the structure form of data entity of the present invention.
Step S202, obtain message, described message comprises the request of the data that Add New Attribute;
Step S203, analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
Step S204, is converted to expandable mark language XML form by described MappedClob data type object, sets up expandable mark language XML text, and described new attribute data is stored in described expandable mark language XML text;
Step S205, by the position that reserved field in data entity corresponding in described expandable mark language XML text storage to described database describes.
The present invention takes into full account future services extendability demand, to have operation expanding demand data entity add CLOB data type attribute " reserved field descriptions ", be used for carrying Future Services Development extendability demand.Because multiple data item and corresponding types can store with the form of extendability label by CLOB data type, when there being newly-increased data entity attribute demand, only need to create new label in " reserved field description ", overall data library structure can not be destroyed, more can not as the amendment that can cause large area program code in prior art when newly-increased data entity attribute, therefore, technical scheme provided by the invention can promote the total quality of software greatly.
In order to set forth technical scheme provided by the invention more all sidedly, the embodiment of the present invention also provides in a kind of database the structural drawing of the device of the data that Add New Attribute.
The structural drawing of the device of the data that Add New Attribute in a kind of database that Fig. 3 provides for the embodiment of the present invention.As shown in Figure 3, this device comprises:
Receive message unit 301, for obtaining message, described message comprises the request of the data that Add New Attribute;
Packet parsing unit 302, for analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
New attribute data storage unit 303, for described MappedClob data type object is converted to expandable mark language XML form, sets up expandable mark language XML text, and described new attribute data is stored in described expandable mark language XML text;
Expandable mark language XML text storage unit 304, for the position described by reserved field in data entity corresponding in described expandable mark language XML text storage to described database.
The structural drawing of the device of the data that Add New Attribute in another database that Fig. 4 provides for the embodiment of the present invention.As shown in Figure 4, this device comprises:
Reserved field describe set up unit 401, for have in the data entity increasing new attribute data demand add reserved field description; Described reserved field is described as character large objects CLOB data type attribute;
Receive message unit 402, for obtaining message, described message comprises the request of the data that Add New Attribute;
Packet parsing unit 403, for analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
New attribute data storage unit 404, for described MappedClob data type object is converted to expandable mark language XML form, sets up expandable mark language XML text, and described new attribute data is stored in described expandable mark language XML text;
Expandable mark language XML text storage unit 405, for the position described by reserved field in data entity corresponding in described expandable mark language XML text storage to described database.
Concrete, described reserved field description is set up unit 401 and is comprised:
First acquiring unit, for obtaining the request adding CLOB data type attribute " reserved field description ";
Second acquisition unit, for obtaining pre-data entity position of adding CLOB data type attribute " reserved field description ";
Reserved field describes and sets up subelement, for determining the data entity corresponding with described data entity position, sets up " the reserved field description " of CLOB data type attribute in described data entity.
Known via above-mentioned technical scheme, compared with prior art, the invention provides in a kind of database the method and apparatus of the data that Add New Attribute.Adopt in database provided by the invention the method and apparatus of the data that Add New Attribute, after getting the message comprising the request of data that Adds New Attribute, analytic message, described new attribute data is resolved to the attribute of MappedClob data type object, then described MappedClob data type object is converted to expandable mark language XML form, set up expandable mark language XML text, described new attribute data is stored in described expandable mark language XML text, finally, the described expandable mark language XML text of described new attribute data will be stored, store the position that in corresponding data entity in a database, reserved field describes, thus realize new attribute data to add in database.Technical scheme provided by the invention, new attribute data is added to the position that in database, in corresponding data entity, reserved field describes, need not change the structure of data entity in database (comprising tables of data), thus the problem of in prior art, new attribute data being added to the database table structure confusion easily brought in database can be avoided, and then the problem that easily causes production data to be lost in prior art can be avoided, provide safeguard during Added Business demand faced by follow-up system, the security of guarantee information system and database.
In addition, in current technology, new attribute data is added to the problem easily bringing database table structure confusion in database, cause a large amount of programs to need amendment, make software total quality lower, technical scheme provided by the invention, do not need to destroy database table structure, therefore, would not cause the problem of database table structure confusion yet, need not revise in a large number program code, thus make software total quality higher.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For system disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a method for the data that Add New Attribute in database, is characterized in that, comprising:
Obtain message, described message comprises the request of the data that Add New Attribute;
Analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
Described MappedClob data type object is converted to expandable mark language XML form, sets up expandable mark language XML text, described new attribute data is stored in described expandable mark language XML text;
By the position that reserved field in data entity corresponding in described expandable mark language XML text storage to described database describes.
2. method according to claim 1, is characterized in that, obtains described message from message interface.
3. method according to claim 1, is characterized in that, described MappedClob is the Java data type corresponding with database character large objects CLOB data type.
4. method according to claim 1, is characterized in that, before described acquisition message, also comprises:
Have in the described data entity increasing described new attribute data demand add described reserved field describe; Described reserved field is described as character large objects CLOB data type attribute.
5. method according to claim 1, is characterized in that, calls the method for asXML function, and described MappedClob data type object is converted to expandable mark language XML form.
6. method according to claim 1, it is characterized in that, described new attribute data is stored in expandable mark language XML text by the mode defining label, and the mode of described definition label comprises: the title of definition label and data type, and is described label assignment.
7. method according to claim 1, is characterized in that, described reserved field is described as character large objects CLOB data type attribute.
8. method according to claim 1, is characterized in that, by calling Ibatis data access layer operation, by the position that reserved field in data entity corresponding in described expandable mark language XML text storage to described database describes.
9. a device for the data that Add New Attribute in database, is characterized in that, comprising:
Receive message unit, for obtaining message, described message comprises the request of the data that Add New Attribute;
Packet parsing unit, for analytic message, resolves to the attribute of MappedClob data type object by described new attribute data;
New attribute data storage unit, for described MappedClob data type object is converted to expandable mark language XML form, sets up expandable mark language XML text, and described new attribute data is stored in described expandable mark language XML text;
Expandable mark language XML text storage unit, for the position described by reserved field in data entity corresponding in described expandable mark language XML text storage to described database.
10. device according to claim 9, is characterized in that, also comprises:
Reserved field describe set up unit, for have in the described data entity increasing described new attribute data demand add described reserved field description; Described reserved field is described as character large objects CLOB data type attribute.
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| CN111259201A (en) * | 2018-12-03 | 2020-06-09 | 北京嘀嘀无限科技发展有限公司 | Data maintenance method and system |
| CN111259201B (en) * | 2018-12-03 | 2023-08-18 | 北京嘀嘀无限科技发展有限公司 | Data maintenance method and system |
| CN111159215A (en) * | 2019-12-06 | 2020-05-15 | 深圳和而泰家居在线网络科技有限公司 | Mapping method and device of Java class and relational database and computing equipment |
| CN111159215B (en) * | 2019-12-06 | 2023-05-09 | 深圳数联天下智能科技有限公司 | Mapping method and device for Java class and relational database and computing equipment |
| CN112948306A (en) * | 2021-03-30 | 2021-06-11 | 中国建设银行股份有限公司 | Method and device for expanding system interface |
| CN113656433A (en) * | 2021-08-16 | 2021-11-16 | 北京京东振世信息技术有限公司 | Entity object extension method and device, electronic equipment and storage medium |
| CN113656433B (en) * | 2021-08-16 | 2023-09-05 | 北京京东振世信息技术有限公司 | Entity object expansion method, entity object expansion device, electronic equipment and storage medium |
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