CN105868270A - Android object storing framework based on reflection mechanism - Google Patents
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Abstract
The invention discloses an android object storing framework based on a reflection mechanism. The storing framework comprises a simple database operation function module, a data operation auxiliary module, a data object list module and a data access object module. The storing framework is designed by use of the API, and by a inheriting selfdata object abstract base class, a to-be-stored data object is restrained. A major key and a method for judging whether auto-increment of the major key is required are provided. Operation is performed by adding all data objects inheriting the selfdata object abstract base class in a configuration list, acquiring all data object types during establishing of a database and automatically establishing a database list. According to the invention, required additional configuration is quite less; learning cost is low; and API is quite precise, simple and easy to use, so the storing framework is suitable to be used in small and medium enterprises, individual developers or an Android application where storage objects are too many but single object is quite simple.
Description
Technical field
The present invention relates to a kind of object storing framework, particularly to a kind of Android based on reflex mechanism
Object storing framework.
Background technology
Along with the raising developing demand locally stored with data rapidly in Android market, how to simplify
The data object storage work of Android platform, easier for the offer of numerous Android application developer,
General data object storing framework becomes numerous enterprises, tissue, technical staff's concern.Mesh
Before, the data storage technology used in Android platform is mainly: use in Android API
Data object is configured to the mode of key-value pair and stores by SharePreference class, protects in XML file mode
Deposit；Serialized by Json or Java, data object is preserved in the way of text；Use
The database frameworks such as greenDAO, OrmLite, AndrORM, are mapped as data object in database
Literary name section preserves.
Above several solutions have many defects: stored by SharePreference class,
Call format to data object is must to be single value, is not having the auxiliary of other object serialization technology
Help down and cannot meet the storage of the unified approach to arbitrary data object type；When xml stores and resolves
Wait inefficient；In the case of storage object is numerous, need developer's key to using in storing process
Value is managed.Therefore, the storage of a small amount of simple data it is only applicable to.By Json or Java sequence
The mode changed then is unfavorable for the amendment of data, after serializing batch data, if needing amendment
The most a certain, then again serialize all data and again carry out file storage after needing amendment.Use
The database relation mapping frameworks such as greenDAO, OrmLite, AndrORM can be good at data pair
The additions and deletions of elephant change look into operation and efficiency higher.But the configuration of data above storehouse framework uses note, xml more
The modes such as configuration, configure relatively complicated, learning cost is higher, API ease for use is not enough, too much increase
The size of application package.
Summary of the invention
It is an object of the invention to provide a kind of Android object storing framework based on reflex mechanism.Should
Needed for object storing framework, additional configuration is less, learning cost is low, API more simplifies easy-to-use.
A kind of Android object storing framework based on reflex mechanism, described storing framework includes:
Simple data storehouse handling function module, looks into function for providing the additions and deletions used by database manipulation to change；
Data manipulation supplementary module, for providing the opening of database, updating operation function；
Data object list module, needs to carry out the data object type of database manipulation for record；
DAO module, for recording the community set of data object.
Described simple data storehouse handling function module includes: database manipulation auxiliary object；Perform database
Handling function；Retrieve the result array that all object types being inherited from DAO base class obtain；
Retrieve and single be inherited from the object type of DAO base class, search condition, search condition attribute number
The result array that group, arrangement mode obtain；Judge to insert data object the most successfully function；Judge more
New data-objects the most successfully function；Judge to delete data object the most successfully function；Data object
Set；Data object attribute set；Database statement set；Obtain the method function of attribute；Genus is set
The method function of property.
Described data manipulation supplementary module includes: create database (): Void；Upgrade database (): Void；
Type of database maps () String.
Described data object list module includes: be inherited from the list object of DAO base class；Number
Building method is given tacit consent to according to list object；Single example data object；Obtain the function of data object list.
Described DAO module includes: obtains and wants conservation object major key function；Whether judge major key
From increasing function.
Described conservation object includes: id attribute, name attribute, age attribute, commodity id attribute, commodity
Name attribute and price attribute.
A kind of Android object based on reflex mechanism storage method, is carried out in accordance with the following steps:
(1) initialization data storehouse access tool class simpleDBUtil；
(2) check that database table creates the most, if it is obtain database manipulation object；If not
Then by the establishment SQL statement of reflective construct database table, then create database table, then obtain number
Object is operated according to storehouse；
(3) by reflective construct database manipulation SQL statement；
(4) perform database to increase, delete, change, look into operation, return operating result.
Compared with prior art, there is advantages that the framework of the present invention uses API to set
Meter, by being inherited from data object abstract base class, retrain data object to be stored, it is provided that major key with sentence
The fixed method certainly increased the need of major key, takes out by adding all data objects that is inherited from configured list
As the data object of base class, and obtain all data object type when database creates and automatically create number
Operate according to the mode of storehouse table.The data object storage mode greenDAO best with prior art,
The database frameworks such as OrmLite, AndrORM are compared, and needed for the framework of the present invention, additional configuration is less, learn
Practise low cost, API more simplify easy-to-use, be therefore more suitable for medium-sized and small enterprises, personal development person or
Storage object is numerous but uses in Android application that single object is relatively simple.
Accompanying drawing explanation
Fig. 1 is present invention Android based on reflex mechanism object storing framework figure.
Fig. 2 is that data object of the present invention stores browsing process figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by detailed description of the invention.
A kind of Android object storing framework based on reflex mechanism, as it is shown in figure 1, described storage box
Frame includes:
Simple data storehouse handling function module, looks into function for providing the additions and deletions used by database manipulation to change；
Data manipulation supplementary module, for providing the opening of database, updating operation function；
Data object list module, needs to carry out the data object type of database manipulation for record；
DAO module, for recording the community set of data object.
Described simple data storehouse handling function module includes: database manipulation auxiliary object；Perform database
Handling function；Retrieve the result array that all object types being inherited from DAO base class obtain；
Retrieve and single be inherited from the object type of DAO base class, search condition, search condition attribute number
The result array that group, arrangement mode obtain；Judge to insert data object the most successfully function；Judge more
New data-objects the most successfully function；Judge to delete data object the most successfully function；Data object
Set；Data object attribute set；Database statement set；Obtain the method function of attribute；Genus is set
The method function of property.
Described data manipulation supplementary module includes: create database (): Void；Upgrade database (): Void；
Type of database maps () String.
Described data object list module includes: be inherited from the list object of DAO base class；Number
Building method is given tacit consent to according to list object；Single example data object；Obtain the function of data object list.
Described DAO module includes: obtains and wants conservation object major key function；Whether judge major key
From increasing function.
Described conservation object includes: id attribute, name attribute, age attribute, commodity id attribute, commodity
Name attribute and price attribute.
This technological frame core classes is SimpleDBUtil.java file.This document contains for counting
According to all methods of object storage and for obtaining the MySqlLiteOpenHelper class of database object.
Except comprising one for being converted into one by one by the attribute in Java object in MySqlLiteOpenHelper
Outside the method for database field type, also it is initialized in its onCreate () method
DaoListSingleton class, such is for configuring what record be there is a need to be saved in this technological frame
Object, all these objects are all inherited from BaseDao.Abstract method getKey () defined in BaseDao
Ensure that with autolncrease () object of all classes being inherited from BaseDao all can be right
SimpleDBUtil tool-class provides method to illustrate that this object major key when being saved in database table is
Whether what and major key be from increasing.
As in figure 2 it is shown, a kind of Android object based on reflex mechanism storage method, according to following step
Suddenly carry out:
(1) initialization data storehouse access tool class simpleDBUtil；
(2) check that database table creates the most, if it is obtain database manipulation object；If not
Then by the establishment SQL statement of reflective construct database table, then create database table, then obtain number
Object is operated according to storehouse；
(3) by reflective construct database manipulation SQL statement；
(4) perform database to increase, delete, change, look into operation, return operating result.
In the use flow process of this technological frame, if user has constructed one is inherited from BaseDao
Data object.The when that this data object being carried out storage operation, as long as newly-built one
SimpleDBUtil tool-class, can use the data manipulation API provided in SimpleDBUtil tool-class.
This framework can check that database table has created, and by the reflex mechanism of JAVA, maps data object
In all fields, constructing SQL statement create number after changing into the field type in Sqlite database
According to storehouse table, then construct again by reflex mechanism to change for additions and deletions and look into the data manipulation that middle user needs
SQL statement carry out the additions and deletions of this data object are changed looking into operation.Wherein by reflective construct SQL statement
Process approximately as, as a example by the insertion SQL statement of data object, first create one for character
The StringBuffer object of string splicing, is spliced into " INSERT INTO " SQL statement with this object,
The class name of data object is then obtained by clazz.getSimpleName (), and using this type of name as table
Name, splices SQL again.Now SQL is " INSERT INTO (table name) ", splices " VAELUS after SQL
(？,？,？) ", wherein placeholder "？" number, obtained by the number of all properties of iterative data object
?.The number of all properties of iterative data object obtains attribute-name simultaneously, then passes through
GetGetMethodName (String valueName) method obtains the method name obtaining this attribute.With needing
The method of data to be saved object obtains the property value array of data object, incoming as parameter
CreatelnsertSQL () can obtain the SQL statement that complete data object inserts.If wall scroll
Data, method is inserted just can to directly invoke insert (BaseDao dao), if data acquisition system,
Then need circulation to generate SQL statement, carried out by insert (ArrayList<BaseDao>daoList)
Affairs insert storing process in batches.
The specific embodiment being only the present invention disclosed above, but, the present invention is not limited to this, appoints
What what those skilled in the art can think change all should fall into protection scope of the present invention.
Claims (7)
1. an Android object storing framework based on reflex mechanism, it is characterised in that described storage
Framework includes:
Simple data storehouse handling function module, looks into function for providing the additions and deletions used by database manipulation to change；
Data manipulation supplementary module, for providing the opening of database, updating operation function；
Data object list module, needs to carry out the data object type of database manipulation for record；
DAO module, for recording the community set of data object.
Android object storing framework based on reflex mechanism the most according to claim 1, it is special
Levying and be, described simple data storehouse handling function module includes: database manipulation auxiliary object；Perform number
According to storehouse handling function；Retrieve the number of results that all object types being inherited from DAO base class obtain
Group；Retrieve single be inherited from the object type of DAO base class, search condition, search condition belong to
The result array that property array, arrangement mode obtain；Judge to insert data object the most successfully function；Sentence
Disconnected more new data-objects the most successfully function；Judge to delete data object the most successfully function；Data
Object set；Data object attribute set；Database statement set；Obtain the method function of attribute；If
Put the method function of attribute.
Android object storing framework based on reflex mechanism the most according to claim 1, it is special
Levying and be, described data manipulation supplementary module includes: create database (): Void；Upgrade database ():
Void；Type of database maps () String.
Android object storing framework based on reflex mechanism the most according to claim 1, it is special
Levying and be, described data object list module includes: be inherited from the list object of DAO base class；
Data object list acquiescence building method；Single example data object；Obtain the function of data object list.
Android object storing framework based on reflex mechanism the most according to claim 1, it is special
Levying and be, described DAO module includes: obtains and wants conservation object major key function；Judge major key
Whether from increasing function.
Android object storing framework based on reflex mechanism the most according to claim 5, it is special
Levying and be, described conservation object includes: id attribute, name attribute, age attribute, commodity id attribute,
Trade name attribute and price attribute.
7. Android object based on a reflex mechanism storage method, it is characterised in that according to as follows
Step is carried out:
(1) initialization data storehouse access tool class simpleDBUtil；
(2) check that database table creates the most, if it is obtain database manipulation object；If not
Then by the establishment SQL statement of reflective construct database table, then create database table, then obtain number
Object is operated according to storehouse；
(3) by reflective construct database manipulation SQL statement；
(4) perform database to increase, delete, change, look into operation, return operating result.
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| CN108536711A (en) * | 2017-03-03 | 2018-09-14 | 优信拍（北京）信息科技有限公司 | A kind of date storage method and device |
| CN108595164A (en) * | 2018-04-08 | 2018-09-28 | 浙江网盛数新软件股份有限公司 | A kind of conversion method of data format and Java object |
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| CN108920566A (en) * | 2018-06-21 | 2018-11-30 | 吉林亿联银行股份有限公司 | Operating method, device and the equipment of a kind of pair of SQLite database |
| CN108920566B (en) * | 2018-06-21 | 2020-10-20 | 吉林亿联银行股份有限公司 | Method, device and equipment for operating SQLite database |
| CN110457013A (en) * | 2019-07-12 | 2019-11-15 | 阿里巴巴集团控股有限公司 | Program assembly configuration device and method |
| CN110457013B (en) * | 2019-07-12 | 2023-11-17 | 创新先进技术有限公司 | Program component configuration device and method |
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