CN104182484B - A kind of method and apparatus for realizing HBase data and the mapping of Java field object - Google Patents
A kind of method and apparatus for realizing HBase data and the mapping of Java field object Download PDFInfo
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- CN104182484B CN104182484B CN201410386910.8A CN201410386910A CN104182484B CN 104182484 B CN104182484 B CN 104182484B CN 201410386910 A CN201410386910 A CN 201410386910A CN 104182484 B CN104182484 B CN 104182484B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2457—Query processing with adaptation to user needs
- G06F16/24573—Query processing with adaptation to user needs using data annotations, e.g. user-defined metadata
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
- G06F16/211—Schema design and management
- G06F16/212—Schema design and management with details for data modelling support
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2282—Tablespace storage structures; Management thereof
Abstract
The present invention provides a kind of method and apparatus for realizing HBase data and the mapping of Java field object, helps to improve development efficiency and simplifies the accuracy for safeguarding and ensureing that application code updates.A kind of method for realizing HBase data and the mapping of Java field object of the invention includes: to add to explain in Java field object, and the content for explaining record includes the title of the corresponding HBase table of the Java field object, the title of the column cluster of the corresponding HBase table of each attribute of the Java field object and column therein, the primary key generation strategies in the Java field object；Traverse each attribute of the Java field object, in the case where the attribute traversed has note, the content of note record is obtained, and from the column in the column cluster that the value for extracting the attribute in the Java field object is then filled with the corresponding HBase table of the attribute recorded in the note.
Description
Technical field
The present invention relates to field of computer technology, and particularly a kind of realization HBase data and Java field object map
Method and apparatus.
Background technique
In today of big data accumulation, much applies during carrying out related realization, can all use HBase to store
A large amount of data, because it can provide related efficient real-time query demand.But HBase is as NoSQL, is a kind of no knot in itself
Structure, and the API that itself provides and not include its data translation be Java field object, and user is needed to pass through hard coded
Mode mapped, in this way for different tables, need to write a large amount of duplicated code to complete the inquiry etc. of different tables
Demand.
Meanwhile with the continuous evolution of application, the data column or cluster of HBase are likely to be added, delete, for this
Kind variation, it is necessary to which programmer re-starts corresponding coded treatment in a program.Such as the content in record sheet 1
HBase table, table person, column cluster be info, under be classified as info:name, info:age, info:address, using journey
Sequence needs to read the record of every row in table, and every a line record is converted to Java field object (Person.java).Or it is inserting
When entering, application program need to convert each Java field object (Person.java) to the Put object of HBase.
Table 1
| name | age | address | |
| person1 | It is small red | 13 | Chengdong District 11 |
| person2 | It is small bright | 12 | End of the bridge area 5 |
| …… | …… | …… | …… |
| personN | Dogface | 12 | Shangcheng District 7 |
Being recorded using application program in HBase API to the every a line read is a Result object, then program
It by way of getValue, is passed to after column cluster and column name, returns to corresponding column data, then show and call corresponding setting
Its value is saved to the object and is corresponded in attribute by method.For example first row is needed to show and calls Person.setName
Name attribute value is arranged in (String name) method, and secondary series is needed to show and calls Person.setAge (int age)
Name attribute value is arranged in method；And so on.It is also such when insertion.
Prior art implementation fine row in the case where HBase table data column are less, but it is more for columns such as
It is then clearly to be difficult maintenance in the case where column up to a hundred；Immediately corresponding code has been write, if the newly-increased column of data, then answer
It almost all to be updated with program code once, need to do a large amount of verifying work after the completion of updating to ensure the accurate of update
Property.The suitable height of its maintenance cost, and some mistakes are once tested less than then the later period is also not easy to find, it is easy to cause
The appearance of bigger problem.And repeat the data manipulation methods such as a large amount of similar insertion, inquiry, efficiency for exploitation and
All it is difficult tolerance in the design of code.
Summary of the invention
In view of this, the present invention provides a kind of method and apparatus for realizing HBase data and the mapping of Java field object, help
In raising development efficiency and simplify the accuracy for safeguarding and ensureing that application code updates.
To achieve the above object, according to an aspect of the invention, there is provided a kind of realization HBase data and the domain pair Java
As the method for mapping.
The method that this realization HBase data of the invention are mapped with Java field object includes: to add in Java field object
It appends notes to, the content for explaining record includes the title of the corresponding HBase table of the Java field object, the Java field object
The corresponding HBase table of each attribute column cluster and the major key in the titles of column therein, the Java field object generate
Strategy；The each attribute for traversing the Java field object obtains note record in the case where the attribute traversed has note
Content, and extract from the Java field object value of the attribute to be then filled with the attribute recorded in the note corresponding
HBase table column cluster in column in.
Optionally, the step of content for obtaining note record includes: to obtain the note using Java reflection mechanism
The content of record.
Optionally, the title of the corresponding HBase table of the Java field object is recorded in the class head of the Java field object
In note, the column cluster of the corresponding HBase table of each attribute of the Java field object and the title of column therein are remembered respectively
Record is in the note of each attribute.
According to another aspect of the present invention, another method for realizing HBase data and the mapping of Java field object is provided.
The method that this realization HBase data of the invention are mapped with Java field object includes: to add in Java field object
It appends notes to, the content for explaining record includes the title of the corresponding HBase table of the Java field object, the Java field object
The corresponding HBase table of each attribute column cluster and the major key in the titles of column therein, the Java field object generate
Strategy；The each attribute for traversing the Java field object obtains note record in the case where the attribute traversed has note
Content, and to be then saved in the column that record in the note corresponding described from data are extracted in the column of HBase table
In the attribute of Java field object.
Optionally, the step of content for obtaining note record includes: to obtain the note using Java reflection mechanism
The content of record.
Optionally, the title of the corresponding HBase table of the Java field object is recorded in the class head of the Java field object
In note, the column cluster of the corresponding HBase table of each attribute of the Java field object and the title of column therein are remembered respectively
Record is in the note of each attribute.
According to another aspect of the invention, a kind of device for realizing HBase data and the mapping of Java field object is provided.
This realization HBase data of the invention and the device of Java field object mapping include: preserving module, for saving
Java field object, added with explaining in the Java field object, the content for explaining record includes that the Java field object is corresponding
HBase table title, the column cluster of the corresponding HBase table of each attribute of the Java field object and the name of column therein
Claim, the primary key generation strategies in the Java field object；It explains and obtains module, for traversing each category of the Java field object
Property, in the case where the attribute traversed has note, obtain the content of note record；HBase table writing module is used for from institute
State extracted in Java field object it is described explain obtain module walks to the value of attribute be then filled in the note of the attribute and record
The corresponding HBase table of the attribute column cluster in column in.
Optionally, the acquisition module of explaining is also used for the content that Java reflection mechanism obtains explaining record.
According to another aspect of the invention, another device for realizing HBase data and the mapping of Java field object is provided.
This realization HBase data of the invention and the device of Java field object mapping include: memory module, for storing
Java field object, added with explaining in the Java field object, the content for explaining record includes that the Java field object is corresponding
HBase table title, the column cluster of the corresponding HBase table of each attribute of the Java field object and the name of column therein
Claim, the primary key generation strategies in the Java field object；Module is obtained, for traversing each attribute of the Java field object,
In the case where the attribute traversed has note, the content of note record is obtained；Attribute value writing module is used for from HBase
Data are extracted in the column of table to be then saved in the attribute of the corresponding Java field object of the column recorded in the note.
Optionally, the module that obtains is also used for the content that Java reflection mechanism obtains explaining record.
According to the technique and scheme of the present invention, it adds and explains in Java field object, make the attribute and HBase of Java field object
The cell of table is corresponding.Because note can be passed through using the available content for explaining record of Java reflection mechanism
The corresponding relationship for confirming the attribute of Java field object and the cell of HBase table, thus may be implemented HBase data and Java
The mutual phase mapping of field object, thus in domain model, using the former data as the value of the attribute of the latter, or by the latter's
Data of the value of attribute as the former.In this way, need to only increase a Java field object newly in the case where HBase table is newly added
Attribute and add note make the attribute value correspond to newly add.This mode has avoided the mode for writing code, update
It is only Java field object attribute and its note, safeguards to help to improve development efficiency and simplify and ensure application program generation
The accuracy that code updates.
Detailed description of the invention
Attached drawing for a better understanding of the present invention, does not constitute an undue limitation on the present invention.Wherein:
Fig. 1 is the schematic diagram according to an embodiment of the present invention by HBase data and the process of the mutual phase mapping of Java field object；
Fig. 2 is according to an embodiment of the present invention a kind of to realize the basic of device that HBase data and Java field object map
The schematic diagram of structure；
Fig. 3 is the base of another device for realizing HBase data and the mapping of Java field object according to an embodiment of the present invention
The schematic diagram of this structure.
Specific embodiment
Below in conjunction with attached drawing, an exemplary embodiment of the present invention will be described, including the various of the embodiment of the present invention
Details should think them only exemplary to help understanding.Therefore, those of ordinary skill in the art should recognize
It arrives, it can be with various changes and modifications are made to the embodiments described herein, without departing from scope and spirit of the present invention.Together
Sample, for clarity and conciseness, descriptions of well-known functions and structures are omitted from the following description.
In the present embodiment, the mapping relations of Java field object and HBase table structure are realized in such a way that display is explained.
When defining Java field object in the usual way, increases in class head and explain, which is that the Java field object is corresponding
The title of HBase table；And it adds and explains on each attribute of the Java field object, wherein the content of each note is the category
The column cluster of the corresponding HBase table of property and the title of column therein.I.e. each Java field object corresponds to a line of HBase table, and
Each attribute of Java field object corresponds to a column of HBase table.In addition adding one of the Java field object has attention key raw
At the note of strategy, which includes specific primary key generation strategies.In addition in the usual way Java Development Framework for example
Corresponding data manipulation DAO is configured in the configuration file of Spring, and formulates corresponding java class.
By adding information in note, keep the attribute of Java field object corresponding with the cell of HBase table.Because making
With Java reflection mechanism it is available explain record content, so can by explain confirmation Java field object attribute with
The mutual phase mapping of HBase data Yu Java field object thus may be implemented in the corresponding relationship of the cell of HBase table, thus
In domain model, using the former data as the value of the attribute of the latter, or using the value of the attribute of the latter as the former number
According to.Process shown in FIG. 1 specifically can be used.Fig. 1 is according to an embodiment of the present invention that HBase data and Java field object are mutual
The schematic diagram of the process of mapping.In Fig. 1, for using HBase data as the value of the attribute of Java field object and by Java
The value of the attribute of field object is merged as both mapping modes of HBase data and is indicated in a process, referring specifically to each step
Explanation in rapid.
Step S11: load HBase object and Java field object.In this step, according to the note of the class head of Java field object
Solution generates the HBase table specified in major key and load note.
Step S12: each attribute of traversal Java field object.
Step S13: judging whether traversal is completed, if it is not, entering step S14.S17 is entered step if traversing completion.
Step S14: note is judged whether there is.If so, enter step S15, otherwise return step S12.
Step S15: the content for explaining record is obtained.It can determine that the attribute of Java field object is corresponding according to the content of note
HBase table column cluster in column.
Step S16: data mapping is carried out.The first mapping mode is that the value of the attribute of extraction Java field object is then filled with
In column in the column cluster of the corresponding HBase table of the attribute；Second of mapping mode is to extract data then from the column of HBase table
It is saved in the attribute of the corresponding Java field object of the column.Return step S12 after this step continues to traverse.
Step S17: output result.If it is the first above-mentioned mapping mode, then HBase object is exported；If it is above-mentioned
Second of mapping mode then exports Java field object.
The insertion of HBase data manipulation can also be provided using the method for the present embodiment, various dimensions inquiry is deleted according to major key
It except equal template methods configure corresponding DAO when in use in Spring, and informs its corresponding java class, then calls phase
The template method answered is passed to template method for corresponding Java field object as parameter, i.e., according to the note in Java field object
Corresponding result can be obtained.
Fig. 2 is according to an embodiment of the present invention a kind of to realize the basic of device that HBase data and Java field object map
The schematic diagram of structure, the device are used to for the data of Java field object being mapped in HBase table.As shown in Fig. 2, realizing HBase
Data and the device 20 of Java field object mapping mainly include preserving module 21, note obtains module 22 and HBase table is written
Module 23.
Preserving module 21, added with explaining in the Java field object, explains the content of record for saving Java field object
The column cluster of the corresponding HBase table of each attribute of title, Java field object including the corresponding HBase table of Java field object and its
In the titles of column, the primary key generation strategies in Java field object.It explains and obtains module 22 for traversing the every of Java field object
A attribute obtains the content of note record in the case where the attribute traversed has note.HBase table writing module 23 is used
In from extract in Java field object explain obtain module walks to attribute value be then filled with the attribute note in record
In column in the column cluster of the corresponding HBase table of the attribute.Explaining acquisition module 22 can also be used to obtain using Java reflection mechanism
Explain the content of record.
Fig. 3 is the base of another device for realizing HBase data and the mapping of Java field object according to an embodiment of the present invention
The schematic diagram of this structure, the device are used to the data in HBase table being mapped to Java field object.As shown in figure 3, realizing
HBase data and the device 30 of Java field object mapping specifically include that memory module 31, obtain module 32 and attribute value write-in
Module 33.
Memory module 31, added with explaining in the Java field object, explains the content of record for storing Java field object
The column cluster of the corresponding HBase table of each attribute of title, Java field object including the corresponding HBase table of Java field object and its
In the titles of column, the primary key generation strategies in Java field object.Obtain each category that module 32 is used to traverse Java field object
Property, in the case where the attribute traversed has note, obtain the content of note record.Attribute value writing module 33 be used for from
Data are extracted in the column of HBase table to be then saved in the attribute of the corresponding Java field object of the column recorded in note.It obtains
Module 32 can also be used in the content for obtaining explaining record using Java reflection mechanism.
Technical solution according to an embodiment of the present invention is added in Java field object and is explained, makes the attribute of Java field object
It is corresponding with the cell of HBase table.Because can be led to using the available content for explaining record of Java reflection mechanism
The corresponding relationship for crossing the cell of the attribute and HBase table of explaining confirmation Java field object, thus may be implemented HBase data
With the mutual phase mapping of Java field object, thus in domain model, using the former data as the value of the attribute of the latter, or will
Data of the value of the attribute of the latter as the former.In this way, need to only increase the domain Java newly in the case where HBase table is newly added
The attribute of object and add note make the attribute value correspond to newly add.This mode has avoided the mode for writing code,
What is updated is only Java field object attribute and its note, safeguards to help to improve development efficiency and simplify and ensures application
The accuracy that program code updates.
Basic principle of the invention is described in conjunction with specific embodiments above, however, it is desirable to, it is noted that this field
For those of ordinary skill, it is to be understood that the whole or any steps or component of the process and apparatus of the present invention, Ke Yi
Any computing device (including processor, storage medium etc.) perhaps in the network of computing device with hardware, firmware, software or
Their combination is realized that this is that those of ordinary skill in the art use them in the case where having read explanation of the invention
Basic programming skill can be achieved with.
Therefore, the purpose of the present invention can also by run on any computing device a program or batch processing come
It realizes.The computing device can be well known fexible unit.Therefore, the purpose of the present invention can also include only by offer
The program product of the program code of the method or device is realized to realize.That is, such program product is also constituted
The present invention, and the storage medium for being stored with such program product also constitutes the present invention.Obviously, the storage medium can be
Any well known storage medium or any storage medium developed in the future.
It may also be noted that in the apparatus and method of the present invention, it is clear that each component or each step are can to decompose
And/or reconfigure.These, which decompose and/or reconfigure, should be regarded as equivalent scheme of the invention.Also, execute above-mentioned series
The step of processing, can execute according to the sequence of explanation in chronological order naturally, but not need centainly sequentially in time
It executes.Certain steps can execute parallel or independently of one another.
Above-mentioned specific embodiment, does not constitute a limitation on the scope of protection of the present invention.Those skilled in the art should be bright
It is white, design requirement and other factors are depended on, various modifications, combination, sub-portfolio and substitution can occur.It is any
Made modifications, equivalent substitutions and improvements etc. within the spirit and principles in the present invention, should be included in the scope of the present invention
Within.
Claims (10)
1. a kind of method for realizing HBase data and the mapping of Java field object characterized by comprising
It adds and explains in Java field object, the content for explaining record includes the corresponding HBase table of the Java field object
Title, the column cluster of the corresponding HBase table of each attribute of the Java field object and the title, described of column therein
Primary key generation strategies in Java field object, wherein the column of the corresponding HBase table of each attribute of the Java field object
The title of cluster and column therein is separately recorded in the note of each attribute；
The each attribute for traversing the Java field object obtains note record in the case where the attribute traversed has note
Content, and extract from the Java field object value of the attribute to be then filled with the attribute recorded in the note corresponding
HBase table column cluster in column in.
2. the method according to claim 1, wherein the step of content for obtaining note record, includes:
The content of note record is obtained using Java reflection mechanism.
3. method according to claim 1 or 2, which is characterized in that the title of the corresponding HBase table of the Java field object
It is recorded in the note of the class head of the Java field object.
4. a kind of method for realizing HBase data and the mapping of Java field object characterized by comprising
It adds and explains in Java field object, the content for explaining record includes the corresponding HBase table of the Java field object
Title, the column cluster of the corresponding HBase table of each attribute of the Java field object and the title, described of column therein
Primary key generation strategies in Java field object, wherein the column of the corresponding HBase table of each attribute of the Java field object
The title of cluster and column therein is separately recorded in the note of each attribute；
The each attribute for traversing the Java field object obtains note record in the case where the attribute traversed has note
Content, and to be then saved in the column that record in the note corresponding described from data are extracted in the column of HBase table
In the attribute of Java field object.
5. according to the method described in claim 4, it is characterized in that, it is described obtain the note record content the step of include:
The content of note record is obtained using Java reflection mechanism.
6. method according to claim 4 or 5, which is characterized in that the title of the corresponding HBase table of the Java field object
It is recorded in the note of the class head of the Java field object.
7. a kind of device for realizing HBase data and the mapping of Java field object characterized by comprising
Preserving module, for saving Java field object, added with note, the content packet for explaining record in the Java field object
Include the title of the corresponding HBase table of the Java field object, the corresponding HBase table of each attribute of the Java field object
Column cluster and the titles of column therein, the Java field object in primary key generation strategies, wherein the Java field object it is every
The column cluster of the corresponding HBase table of a attribute and the title of column therein are separately recorded in the note of each attribute；
Explaining acquisition module has the case where note in the attribute traversed for traversing each attribute of the Java field object
Under, obtain the content of note record；
HBase table writing module, for extract from the Java field object it is described explain obtain module walks to attribute
Value is then filled in the column in the column cluster of the corresponding HBase table of the attribute recorded in the note of the attribute.
8. device according to claim 7, which is characterized in that the note obtains module and is also used for Java reflection machine
The content for explaining record is made.
9. a kind of device for realizing HBase data and the mapping of Java field object characterized by comprising
Memory module, for storing Java field object, added with note, the content packet for explaining record in the Java field object
Include the title of the corresponding HBase table of the Java field object, the corresponding HBase table of each attribute of the Java field object
Column cluster and the titles of column therein, the Java field object in primary key generation strategies, wherein the Java field object it is every
The column cluster of the corresponding HBase table of a attribute and the title of column therein are separately recorded in the note of each attribute；
Module is obtained, in the case where the attribute traversed has note, to obtain for traversing each attribute of the Java field object
The content for taking the note to record；
Attribute value writing module, for being then saved in the column recorded in the note from extraction data in the column of HBase table
In the attribute of the corresponding Java field object.
10. device according to claim 9, which is characterized in that the acquisition module is also used for Java reflection mechanism
Obtain explaining the content of record.
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| CN104462486B (en) * | 2014-12-18 | 2017-12-19 | 北京国双科技有限公司 | Generate the method and device of the object definition of database |
| CN104573022A (en) * | 2015-01-12 | 2015-04-29 | 浪潮软件股份有限公司 | Data query method and device for HBase |
| CN105867886B (en) * | 2015-01-19 | 2020-03-10 | 阿里巴巴集团控股有限公司 | Method and device for writing table |
| CN107038179B (en) * | 2016-08-23 | 2020-04-10 | 平安科技（深圳）有限公司 | Information item storage method and system |
| CN106547863A (en) * | 2016-10-31 | 2017-03-29 | 努比亚技术有限公司 | The method and device of operation HBase |
| CN106502541B (en) * | 2016-11-03 | 2019-08-27 | 贵阳朗玛信息技术股份有限公司 | A kind of operating method and device of Android interface |
| CN108399095B (en) * | 2017-02-04 | 2021-08-10 | 北京京东尚科信息技术有限公司 | Method, system, device and storage medium for supporting dynamic management of timed tasks |
| CN108694194A (en) * | 2017-04-10 | 2018-10-23 | 北京京东尚科信息技术有限公司 | A kind of method and apparatus of construction data object |
| CN108733399A (en) * | 2017-04-13 | 2018-11-02 | 北京京东尚科信息技术有限公司 | The method and apparatus that dynamic updates configuration data |
| CN109977160A (en) * | 2019-03-28 | 2019-07-05 | 上海中通吉网络技术有限公司 | Data manipulation method, device, equipment and storage medium |
| CN114238527A (en) * | 2022-02-24 | 2022-03-25 | 安翰科技(武汉)股份有限公司 | Data processing method and data processing device based on object relation mapping |
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