CN109241071A - A kind of Android database upgrade method, apparatus and terminal - Google Patents
A kind of Android database upgrade method, apparatus and terminal Download PDFInfo
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- CN109241071A CN109241071A CN201810966468.4A CN201810966468A CN109241071A CN 109241071 A CN109241071 A CN 109241071A CN 201810966468 A CN201810966468 A CN 201810966468A CN 109241071 A CN109241071 A CN 109241071A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/80—Database-specific techniques
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Abstract
This application discloses a kind of Android database upgrade methods, device and terminal, the Android database upgrade method passes through when the database of application program for mobile terminal needs to upgrade, first create interim table, the table data in existing database to be backuped in interim table, the table containing newer field is created in the database of application program for mobile terminal later, finally the data in interim table are inserted into the table containing newer field again, to complete the backup migration of database, and after making the database upgrade of application program for mobile terminal, original data also can be remained fully, the loss of data will not be generated, the user that upgrades to of application program for mobile terminal database is avoided to bring loss.
Description
Technical field
This application involves database technical field more particularly to a kind of Android database upgrade method, apparatus and ends
End.
Background technique
The database that Android exploitation is related to generallys use Lightweight Database SQLite3, and in actual development,
When storing some simple data, target can be reached using SharedPreferences, only storing data structure slightly
When the data of micro- complexity, database will use just to store.The design of database table be frequently not it is very perfect at the very start,
During application version develops iteration, the structure of table is also required to adjust, this relates to the upgrading of database.
Database upgrade mainly has following these types of situation: increase table, modification table, increases literary name section and deletes deletion table
Except literary name section.Wherein, increase table and deletion table are not related to the migration problem of data, and increase table only leads on the basis of the original
" CRTATE TABLE " order i.e. newdata table is crossed, as long as and deleting table and deleting data by " DROP TABLE " order
Table.Compared with increase table and deletion table, modification table is relatively more complicated.In order to enable modification table becomes simply, modify at present
Table usually deletes original tables of data, re-creates the mode of new tables of data then to realize.
But it can have the following problems: be listed under user is current when upgrade database by the way of above modification table
Table is downloading file, if the upgrading for carrying out database at this time updates, and new version, which has a update point, to be listed under having upgraded
Then the database table of table re-creates the mode of new tables of data then deleting using by original tables of data to realize number
After updating according to the upgrading in library, the original download list of user can be emptied, and thus bring great inconvenience for user.
Summary of the invention
This application provides a kind of Android database upgrade method, apparatus and terminals, to solve existing Android
Database upgrade mode, which uses, deletes original tables of data, re-creates the mode of new tables of data then to realize database
Upgrading update after, the original download list of user can be emptied, and the problem of great inconvenience is thus brought for user.
In a first aspect, the application provides a kind of Android database upgrade method, which comprises
Receive the upgrade command to the database of application program for mobile terminal；
The table in the existing database of the application program for mobile terminal is traversed, to obtain the table of the existing database
Name；
According to the table name of the existing database, interim table is created in the database of the application program for mobile terminal；
Table data in the existing database are backuped in the interim table；
The table containing newer field is created in the database of the application program for mobile terminal；
The data of the interim table are inserted into the table containing newer field.
With reference to first aspect, the first in first aspect can be in realization mode, and the database is the light-duty number of SQLite
According to library, when traversing the table in the existing database of the application program for mobile terminal, the SQLite Lightweight Database is filtered out
In metadata.
With reference to first aspect, in second of achievable mode of first aspect, by the table number in the existing database
After backuping in the interim table, the method also includes: delete the table in the existing database.
With reference to first aspect, the data of the interim table can be inserted into realization mode by the third in first aspect
After in the table containing newer field, the method also includes: delete the interim table.
Second aspect, the application provide a kind of Android database upgrade device, and described device includes:
Receiving unit, for receiving the upgrade command to the database of application program for mobile terminal；
Traversal Unit, the table in existing database for traversing the application program for mobile terminal are described existing to obtain
There is the table name of database；
Creating unit, for the table name according to the existing database, in the database of the application program for mobile terminal
The middle interim table of creation；
Backup units, for backuping to the table data in the existing database in the interim table；
The creating unit is also used to create in the database of the application program for mobile terminal containing newer field
Table；
It is inserted into unit, for the data of the interim table to be inserted into the table containing newer field.
In conjunction with second aspect, the first in second aspect can be in realization mode, and the database is the light-duty number of SQLite
According to library, when table of the Traversal Unit in the existing database for traversing the application program for mobile terminal, filter out described
Metadata in SQLite Lightweight Database.
In conjunction with second aspect, in second of achievable mode of second aspect, described device further include:
Unit is deleted, for deleting after backuping to the table data in the existing database in the interim table
Table in the existing database.
In conjunction with second aspect, the third in second aspect can be in realization mode, the deletion unit, is also used to by institute
State interim table data be inserted into the table containing newer field after, delete the interim table.
The third aspect, the application provide a kind of Android database upgrade terminal, and the terminal includes: processor, and
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
Receive the upgrade command to the database of application program for mobile terminal；
The table in the existing database of the application program for mobile terminal is traversed, to obtain the table of the existing database
Name；
According to the table name of the existing database, interim table is created in the database of the application program for mobile terminal；
Table data in the existing database are backuped in the interim table；
The table containing newer field is created in the database of the application program for mobile terminal；
The data of the interim table are inserted into the table containing newer field.
In conjunction with the third aspect, the first in the third aspect can be in realization mode, and the database is the light-duty number of SQLite
According to library, when the processor is also configured to traverse the table in the existing database of the application program for mobile terminal, filter out
Metadata in the SQLite Lightweight Database.
In conjunction with the third aspect, in second of achievable mode of the third aspect, the processor is also configured to institute
It states after the table data in existing database backup in the interim table, deletes the table in the existing database.
In conjunction with the third aspect, the third in the third aspect can be in realization mode, and the processor is also configured to institute
State interim table data be inserted into the table containing newer field after, delete the interim table.
From the above technical scheme, the application provides a kind of Android database upgrade method, apparatus and terminal, should
Android database upgrade method by first creating interim table when the database of application program for mobile terminal needs to upgrade, with
Table data in existing database are backuped in interim table, creates contain in the database of application program for mobile terminal later
Data in interim table are finally inserted into the table containing newer field by the table of newer field again, to complete the backup of database
Migration, and after making the database upgrade of application program for mobile terminal, original data also can be remained fully, will not
The loss for generating data, avoids the user that upgrades to of application program for mobile terminal database from bringing loss.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the first embodiment of Android database upgrade method provided by the present application.
Fig. 2 is a kind of flow chart of the second embodiment of Android database upgrade method provided by the present application.
Fig. 3 is a kind of flow chart of the 3rd embodiment of Android database upgrade method provided by the present application.
Fig. 4 is a kind of structural block diagram of one embodiment of Android database upgrade device provided by the present application.
Fig. 5 is a kind of structural block diagram of another embodiment of Android database upgrade device provided by the present application.
Fig. 6 is a kind of schematic diagram of Android database upgrade terminal provided by the present application.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.Below in conjunction with attached drawing,
The technical scheme provided by various embodiments of the present application will be described in detail.
Referring to Fig. 1, being a kind of first embodiment of Android database upgrade method provided by the present application, the side
Method includes:
Step 101, the upgrade command to the database of application program for mobile terminal is received.
Specifically, the upgrade command of the database to application program for mobile terminal, specifically can be and receives
" onUpgrade " method call.
Step 102, the table in the existing database of the application program for mobile terminal is traversed, to obtain the available data
The table name in library.
In the present embodiment, the database is SQLite Lightweight Database, due to the member in SQLite Lightweight Database
Data are the included some data generated of the SQLite Lightweight Database, escalation process without referring to these data, also without
It need to backup to these data.Therefore, when traversing the table in the existing database of application program for mobile terminal, institute can be filtered out
The metadata stated in SQLite Lightweight Database is traversed, to promote the efficiency of Android database upgrade.
Step 103, it according to the table name of the existing database, is created in the database of the application program for mobile terminal
Interim table.
Specifically, traverse the table in the existing database of application program for mobile terminal, obtain existing database table name it
Afterwards, interim table can be created according to the table name of existing database, which is used to back up the table data in existing database.
Step 104, the table data in the existing database are backuped in the interim table.
Specifically, the upgrading of database may be increase table, deletion table, modification table, increase literary name section and delete literary name
Section etc..Wherein, in the case where database upgrade is modification table, if original table deleted, new table is then re-created
In the case that the upgrading for carrying out database updates, but new version has a update point to be the database table for having upgraded download list, use
The original download list in family can be emptied, and thus bring great inconvenience for user.Therefore, the application is in database upgrade,
Table data in existing database are first backuped in the interim table, to avoid loss of data caused by database upgrade.
Step 105, the table containing newer field is created in the database of the application program for mobile terminal.
Specifically, being somebody's turn to do the table containing newer field is the data for being used to store after application program for mobile terminal upgrading.
Step 106, the data of the interim table are inserted into the table containing newer field.
Specifically, after creating the table containing newer field, the data for backing up to interim table before can be inserted into institute
It states in the table containing newer field, after the database upgrade to guarantee application program for mobile terminal, original data also can be intact
Ground remains, and will not generate the loss of data, to avoid user due to the upgrading of the database of application program for mobile terminal
Generate loss.
From the above technical scheme, the first embodiment of a kind of Android database upgrade method provided by the present application,
By creating interim table in the database of application program for mobile terminal in the database upgrade of application program for mobile terminal,
Table data in existing database are backuped in the interim table, are created in the database of application program for mobile terminal later
The data of interim table are finally inserted into the table containing newer field, to complete database by the table containing newer field again
Backup migration so that original data also can be remained fully after the database upgrade of application program for mobile terminal,
The loss of data will not be generated, so that user be avoided to generate loss because of the upgrading of the database of application program for mobile terminal.
Referring to Fig. 2, being a kind of second embodiment of Android database upgrade method provided by the present application, this second
Table data in existing database are being backuped in the interim table it on the basis of above-mentioned first embodiment by embodiment
Afterwards, the method also includes:
Step 201, the table in the existing database is deleted.
Specifically, since the table data in existing database have been backed up in interim table, original existing database
In table data and interim table in data can generate repetition, therefore, the present embodiment is standby by the table data in existing database
After in part to the interim table, the table deleted in existing database in time reduces the occupancy of resource to save data space,
To further promote the efficiency of database upgrade.
From the above technical scheme, the second embodiment of a kind of Android database upgrade method provided by the present application,
By deleting the table in existing database in time after backuping to the table data in existing database in the interim table,
To save data space, the occupancy of resource is reduced, under the premise of guaranteeing that the table in existing database will not be lost, is further mentioned
Rise the efficiency of database upgrade.
Referring to Fig. 3, being a kind of 3rd embodiment of Android database upgrade method provided by the present application, the third
The data of the interim table are being inserted into the table containing newer field it on the basis of second embodiment by embodiment
Afterwards, the method also includes:
Step 301, the interim table is deleted.
Specifically, since the data in interim table have been inserted into the table containing newer field, i.e. mobile terminal application journey
The database upgrade of sequence is completed, and original data are fully remained, and does not generate the loss of data, therefore, this
Embodiment is deleted original for backing up in time after being inserted into the data of the interim table in the table containing newer field
The interim table of data reduces the occupancy of resource to save data space.
From the above technical scheme, the 3rd embodiment of a kind of Android database upgrade method provided by the present application,
By deleting interim table in time, guaranteeing after being inserted into the data of the interim table in the table containing newer field
The database upgrade of application program for mobile terminal is completed, and original data are fully remained, and does not generate data
Loss under the premise of, further save data space, reduce the occupancy of resource.
Referring to Fig. 4, being a kind of embodiment of Android database upgrade device provided by the present application, described device packet
It includes:
Receiving unit 401, for receiving the upgrade command to the database of application program for mobile terminal.
Traversal Unit 402, the table in existing database for traversing application program for mobile terminal, to obtain available data
The table name in library.
Creating unit 403 creates in the database of application program for mobile terminal for the table name according to existing database
Interim table.
Backup units 404, for backuping to the table data in existing database in the interim table.
The creating unit 403 is also used to create the table containing newer field in the database of application program for mobile terminal.
It is inserted into unit 405, for the data of the interim table to be inserted into the table containing newer field.
Specifically, the database is SQLite Lightweight Database, and the Traversal Unit is answered in the traversal mobile terminal
When with table in the existing database of program, the metadata in the SQLite Lightweight Database is filtered out.
Referring to Fig. 5, being a kind of another embodiment of Android database upgrade device provided by the present application, the dress
It sets further include:
Unit 501 is deleted, it is existing for deleting after backuping to the table data in existing database in the interim table
There is the table in database.
It is described to delete in a kind of another embodiment of Android database upgrade device provided by the present application refering to Fig. 5
Except unit 501, it is also used to after being inserted into the data of the interim table in the table containing newer field, faces described in deletion
When table.
Referring to Fig. 6, being a kind of schematic diagram of Android database upgrade terminal provided by the present application, the terminal packet
It includes: processor 61, and the memory 62 for 61 executable instruction of storage processor.
Wherein, the processor is configured to: receive the upgrade command to the database of application program for mobile terminal, traversal
Table in the existing database of the application program for mobile terminal, to obtain the table name of the existing database, according to described existing
There is the table name of database, interim table is created in the database of the application program for mobile terminal, it will be in the existing database
Table data backup in the interim table, in the database of the application program for mobile terminal creation contain newer field
The data of the interim table are inserted into the table containing newer field by table.
Specifically, in the present embodiment, the database is SQLite Lightweight Database, and the processor is also configured
Are as follows: when traversing the table in the existing database of the application program for mobile terminal, filter out in the SQLite Lightweight Database
Metadata.
In a kind of another embodiment of Android database upgrade terminal provided by the present application, the processor also by
It is configured that after backuping to the table data in the existing database in the interim table, deletes in the existing database
Table.
In a kind of another embodiment of Android database upgrade terminal provided by the present application, the processor also by
After being configured that the data by the interim table are inserted into the table containing newer field, the interim table is deleted.
In the specific implementation, the application also provides a kind of computer storage medium, wherein the computer storage medium can store
There is program, which may include the part in each embodiment of Android database upgrade method provided by the invention when executing
Or Overall Steps.The storage medium can for magnetic disk, CD, read-only memory (English: Read-Only Memory,
Referred to as: ROM) or random access memory (English: Random Access Memory, referred to as: RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present invention substantially or
Say that the part that contributes to existing technology can be embodied in the form of software products, which can deposit
Storage is in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that computer equipment (can be with
It is personal computer, server or the network equipment etc.) execute certain part institutes of each embodiment of the present invention or embodiment
The method stated.
Same and similar part may refer to each other between each embodiment in this specification.Especially for Android number
For qurush stage arrangement and terminal embodiment, since it is substantially similar to the method embodiment, so be described relatively simple,
Related place is referring to the explanation in embodiment of the method.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (12)
1. a kind of Android database upgrade method, which is characterized in that the described method includes:
Receive the upgrade command to the database of application program for mobile terminal；
The table in the existing database of the application program for mobile terminal is traversed, to obtain the table name of the existing database；
According to the table name of the existing database, interim table is created in the database of the application program for mobile terminal；
Table data in the existing database are backuped in the interim table；
The table containing newer field is created in the database of the application program for mobile terminal；
The data of the interim table are inserted into the table containing newer field.
2. the method as described in claim 1, which is characterized in that the database is SQLite Lightweight Database, described in traversal
When table in the existing database of application program for mobile terminal, the metadata in the SQLite Lightweight Database is filtered out.
3. the method as described in claim 1, which is characterized in that the table data in the existing database are backuped to described face
When table in after, the method also includes: delete the table in the existing database.
4. the method as described in claim 1, which is characterized in that be inserted into the data of the interim table and described contain newer field
Table in after, the method also includes: delete the interim table.
5. a kind of Android database upgrade device, which is characterized in that described device includes:
Receiving unit, for receiving the upgrade command to the database of application program for mobile terminal；
Traversal Unit, the table in existing database for traversing the application program for mobile terminal, to obtain the existing number
According to the table name in library；
Creating unit is created in the database of the application program for mobile terminal for the table name according to the existing database
Build interim table；
Backup units, for backuping to the table data in the existing database in the interim table；
The creating unit is also used to create the table containing newer field in the database of the application program for mobile terminal；
It is inserted into unit, for the data of the interim table to be inserted into the table containing newer field.
6. device as claimed in claim 5, which is characterized in that the database is SQLite Lightweight Database, the traversal
When table of the unit in the existing database for traversing the application program for mobile terminal, the SQLite Lightweight Database is filtered out
In metadata.
7. device as claimed in claim 5, which is characterized in that described device further include:
Unit is deleted, for after backuping to the table data in the existing database in the interim table, described in deletion
Table in existing database.
8. device as claimed in claim 5, which is characterized in that the deletion unit is also used to by the number of the interim table
After being inserted into the table containing newer field, the interim table is deleted.
9. a kind of Android database upgrade terminal, which is characterized in that the terminal includes: processor, and at storage
Manage the memory of device executable instruction；
Wherein, the processor is configured to:
Receive the upgrade command to the database of application program for mobile terminal；
The table in the existing database of the application program for mobile terminal is traversed, to obtain the table name of the existing database；
According to the table name of the existing database, interim table is created in the database of the application program for mobile terminal；
Table data in the existing database are backuped in the interim table；
The table containing newer field is created in the database of the application program for mobile terminal；
The data of the interim table are inserted into the table containing newer field.
10. terminal as claimed in claim 9, which is characterized in that the database is SQLite Lightweight Database, the processing
When device is also configured to traverse the table in the existing database of the application program for mobile terminal, it is light to filter out the SQLite
Metadata in type database.
11. terminal as claimed in claim 9, which is characterized in that the processor is also configured to the existing database
In table data backup in the interim table after, delete the table in the existing database.
12. terminal as claimed in claim 9, which is characterized in that the processor is also configured to the number of the interim table
After being inserted into the table containing newer field, the interim table is deleted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810966468.4A CN109241071A (en) | 2018-08-23 | 2018-08-23 | A kind of Android database upgrade method, apparatus and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810966468.4A CN109241071A (en) | 2018-08-23 | 2018-08-23 | A kind of Android database upgrade method, apparatus and terminal |
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| CN109241071A true CN109241071A (en) | 2019-01-18 |
Family
ID=65069414
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810966468.4A Pending CN109241071A (en) | 2018-08-23 | 2018-08-23 | A kind of Android database upgrade method, apparatus and terminal |
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Application publication date: 20190118 |