CN103226478B - A kind of method automatically generating and using code - Google Patents
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Abstract
The invention discloses a kind of method automatically generating and using code, it is characterised in that comprise the following steps: step one: data acquisition module obtains data base and the system property of data bank service table；Step 2, the corresponding described system property got is assembled into entity class code, model category code and data and processes category code and store by code generation module；Step 3, it is corresponding base class method that the described category code generated in step 2 inherits base class；Step 4, when user client send described traffic table data are carried out operation requests time, the data type instanceization that data process generic module is asked according to user to the described model category code of correspondence and carries out SQL statement assembly by reflex mechanism, database processing component receives and performs SQL statement, returns the operating result generated.The present invention uses reflection technology and the dynamic assembled executable SQL statement of data base, reduces error rate, improves program terseness, maintainable and readable.
Description
Technical field
The present invention relates to the logical combination technical field in database application art, be mainly concerned with tables of data operation
The development process of product, particularly to a kind of method automatically generating and using code.
Background technology
Along with the universal of informationization technology and development, increasing enterprise, unit or team need computer software
Assist the day by day complicated routine work of management.
Along with society quickly increasing and the continuous rising of business complexity, the data of Service Database software requirement amount
The value volume and range of product of table there is also a great difference, and tables of data is being write entity class code and write once, and deleted, changes, looks into by programmer
When just and revising code according to business change, all can there is the operation that certain operations process is identical with operational approach, have phase
Same operating process and operational approach, programmer certainly will do the work of a lot of duplication of labour, in order to reduce or remit the repetition of programmer
Work, improves development efficiency, reduces error rate, and programmer needs to have an instrument doing these duplications of labour for them, this
Sample programmer will free from the duplication of labour, more energy is put into service logic analysis and realizes, so may be used
To be substantially reduced development cost, shorten the construction cycle, improve product quality.
Summary of the invention
It is an object of the invention to provide a kind of method automatically generating and using code, for solving the industry of factor data bank table
Business change or different, the problem repeating to write data bank service table handling program.The present invention can assist developer, according to difference
Data bank service table automatically generate correspondence entity class code and database model category code, and generate " increase record, delete
Record, amendment record and inquiry record " basic function program code, substantially reduce the construction cycle of software, decrease exploitation
The operating pressure of personnel, reduces cost, improves the competitiveness of product in market.
The invention discloses a kind of method automatically generating and using code, it is characterised in that comprise the following steps:
Step one, data acquisition module is series-connected to data base by data base's concatenation character, obtains the number of user setup
According to storehouse and the system property of data bank service table；
Step 2, code generation module gets described system property, and adds corresponding described system property to entity
Class template, data model class template and data process class template, utilize character string assembling technique to generate entity class code, model class
Code and data process category code and store；
Step 3, described entity class code, described model category code and described data process category code and inherit platform base class
Class base class method is processed for entity class base class method, model class base class method and data；
Step 4, when user client send described traffic table data are carried out operation requests time, data process class mould
First block obtains user and asks and call data process category code to operate, and arrives according to the data type instance of user's request
Corresponding described model category code, it is assembled that described model category code carries out SQL statement by the reflex mechanism of described base class method,
Database processing component receives and performs SQL statement, returns the operating result generated.
Preferably, described step 4, when described traffic table data to be operated by user, user is by request content
Inputting described data and process generic module, described entity class code can carry out automatic Proofreading, if simply to described data bank service
The existing described system property of table carries out the amendment in content, the most described entity class code, described model category code and described operation
Category code does not changes.
Preferably, described step 4, when described traffic table data to be operated by user, user is by request content
Inputting described data and process generic module, described entity class code can carry out automatic Proofreading, if user is to described traffic table number
According to described system property type and described system property quantity carry out increase amendment, the most described entity class code and described model
Category code all occurs to change accordingly and store, but described operation category code need not change.
Preferably, described system property includes that table name, field name, field description, field data types, field could
For empty, primary key attribute with certainly increase attribute.
Preferably, described step 4, when user client send described traffic table data are carried out inquiry operation please
When asking, it is to comprise a data set of inquiry content, when user is in client that described database processing component returns result
Send described traffic table data increased, delete, when revising operation requests, described database processing component can judge user
Whether carry out the operation increasing, delete, revise and inquiring about, if "Yes", return result and operate successfully for increasing, delete, revising
Or failure, if "No" returns Query Result.
Preferably, described model class template be containing " table name ", " NameSpace ", " field name and type " corresponding
Some position symbol function.
Preferably, described entity class template be containing " table name ", " NameSpace ", " field name and type ", " belong to
Property title and type " function of corresponding some position symbol.
Preferably, described SQL statement template be containing " table name ", " NameSpace ", " method name and return value class
Type ", the function of some position symbol corresponding to " parameter name and type ".
Preferably, described SQL statement can be deleted when described user has asked, and discharges spatial cache.
The invention has the beneficial effects as follows that described data process category code is to be with described entity class code and model category code
Operation object, and form SQL statement by reflection technology, use database processing component that SQL statement is carried out operation process,
Embody OO programming idea.When user client send described traffic table data are carried out operation requests time, number
Can ask and call data process category code according to user according to process generic module to operate, according to the data type of user's request
Instantiation is to corresponding described model category code, and described model category code carries out SQL by the reflex mechanism of described base class method
Statement is assembled, and described SQL statement is the most assembled, and when user asks operation to complete, described SQL statement will be deleted,
Be not take up internal memory, i.e. the present invention does not comprise obvious SQL statement character string, reduces error rate and improves program terseness.This
Bright use reflection technology, the dynamically assembled executable SQL statement of data base, reduce the program that data base's change brought frequent
Change, improves program maintainability and readability.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of automatic code generating of the present invention.
Fig. 2 is the schematic flow sheet of use code of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
As shown in Figure 1:
A kind of method automatically generating and using code, it is characterised in that comprise the following steps:
Step one, data acquisition module is series-connected to data base by data base's concatenation character, obtains the number of user setup
According to storehouse and the system property of data bank service table, such as, the data base of user setup is the score management database of school, it is intended that
The school report that traffic table is 2 classes of students of upper semester in 2013 of Third school grade accessed, then data acquisition module can be according to user
Setting find this school report, and obtain the field such as name, achievement in school report；
Step 2, code generation module gets described system property, and adds corresponding described system property to entity
Class template, data model class template and data process class template, utilize character string assembling technique to generate entity class code, model class
Code and data process category code and store；Such as when generating entity class code, can be by table name+" Entity " as one
Individual entity class name of code, the mode generating code is [Serializable] public partial class TB_NOB_
AM_USEREntity；When generating model category code, table name+" Model " as model category code title, the mode generating code is
[TableName(″TB_NOB_AM_USER″)]public partial class TB_NOB_AM_USERModel；Generate behaviour
Making table name during category code+" DAL " conduct operation category code title, the mode generating code is public partial class
TB_NOB_AM_USERDAL。
Step 3, described entity class code, described model category code and described data process category code and inherit platform base class
Class base class method is processed for entity class base class method, model class base class method and data.
Described base class is a kind of call back function present in platform, can be by described entity class code, described model class generation
Code and described data process after category code is inherited and derive from the base class made new advances, and the base class of described new derivative is entity class base class side
Method, model class base class method and data process class base class method, and code therein can be called by reflex mechanism and form SQL language
Conversion between sentence and entity class code and model category code uses.
Step 4, as in figure 2 it is shown, when user client send described traffic table data are carried out operation requests time, number
First obtain user according to process generic module to ask and call described data process category code to operate, according to the number of user's request
According to Type Concretization to corresponding described model category code, described model category code is carried out by the reflex mechanism of described base class
SQL statement is assembled, and database processing component receives and perform SQL statement, returns the operating result generated.
It is to say, when user requires the score of each subject or of a few individuals in the school report transferred in query steps one
During section's achievement, data process generic module can carry out instantiation by information, and compares with model category code and will be containing user
Solicited message is sent to database processing component in the interior SQL statement being assembled into, and data base will form one corresponding content
Individual data acquisition system returns to client.
When user requires to increase, revises or delete the information in the school report transferred, if simply to wherein name,
Content in the existing attribute of achievement etc. carries out the operation increasing, revise or deleting, and the Chinese language of the most original name Zhang San becomes
Achievement is 88 points, changes to now 92 points, then originally described entity class code, described model category code and the described operation of storage
Category code does not changes, if the operation that existing attribute type is increased, revises or deletes, such as, originally
Form does not has the age this, add now the age this, then the originally described entity class code and described of storage
Model category code all occurs to change accordingly and store, but described process category code does not carry out code change.
Described system property includes that table name, field name, field description, field data types, field could be for empty, major keys
Attribute and certainly increase attribute.
Described step 4, when user sends in client described traffic table data carry out inquiring about operation requests, described
It is to comprise a data set of inquiry content, when user sends described in client that database processing component returns result
Traffic table data carry out increasing, delete, when revising and inquire about operation requests, whether described database processing component can judge user
Carry out the operation increasing, deleting, revise, if "Yes", return result and operate successfully, if "No" is returned for increasing, delete, revising
Return Query Result.
Described model class template be containing some position symbol corresponding to " table name ", " NameSpace ", " field name and type "
Function.
Described entity class template be containing " table name ", " NameSpace ", " field name and type ", " Property Name and
Type " function of corresponding some position symbol.
Described SQL statement template be containing " table name ", " NameSpace ", " method name and return to Value Types ", " parameter
Title and type " function of corresponding some position symbol.
Described SQL statement can be deleted when described user has asked, and discharges spatial cache.
Programmer can increase property operations to described entity class code, adds the convenient field of certain operations or attribute,
So the field attribute of described entity class code is quantitatively greater than equal to described data model category code.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
In other words, the invention provides a kind of method automatically generating and using code, for generating for database table
The increasing of operation, delete, change and inquire about basic function program code, and generate corresponding entity class code and database model class generation
Code.Improve the work efficiency of developer with this, shorten software development cycle, reduce entreprise cost, improve product market competition
Power.
The ultimate principle of the present invention is as follows:
1. according to data base's connection string, it is connected to data base, inquires about the system property of table to be operated, including table
Name, field name, field description, field data types, field could be empty, primary key attribute and certainly increase attribute, in case using.
As: table to be operated is " TB_NOB_AM_USER ", and its field attribute result is: for major key be: U_ID (from increasing type)
| FieldName | TypeName |
| U_ID | int |
| U_CODE | varchar |
| U_NAME | varchar |
| U_STATUS | varchar |
| U_TYPE | int |
2. according to the result of the 1st inquiry, by character string assembling technique, using table name+" Model " as model class name
Claim, field is generated model class (can be file) as generic attribute, calling model class template.Code building mode is such as:
... ... .. by that analogy, generates whole model class (can be class file).
3. according to the result of the 1st inquiry, by character string assembling technique, using table name+" Entity " as entity class name
Claim, using field as class field and attribute, call entity class template generation entity class (can be file), code building mode such as:
... by that analogy, generate whole entity class (can be file).
4. according to the result of the 1st inquiry, by character string assembling technique, using table name as operation object, table is grasped
The increasing (" Save "+table name is as method name) made, delete (" Delete "+table name is as method name), change (" Save "+table name conduct
Method name) and look into function (" Get "+table name is as method name) generate corresponding function (note: wherein single query and delete function
The title of the major key field that parameter is table), call operation class template generates corresponding data and processes class, the most real number
According to storehouse operation perform class, the code after generation such as:
5. more than, four is four nodes in the inventive method, and core methed of the present invention is:
6. more than the 2nd, 3, the class mentioned in 4 steps generate template, with " title ", " NameSpace " needed for class,
" field name and type ", " Property Name and type ", " method name and return to Value Types " and " parameter name and type " with
The mode of placeholder is spelt in template character string, fills with the Table Properties value of standby correspondence, generates the category code of correspondence,
Such as:
7. detailed description of the invention
In order to reach purpose described above, the step of the technical solution adopted for the present invention to solve the technical problems is:
1) it is connected to data base
2) inquire about the field attribute of appointment table, major key and certainly increase attribute
3) calling model class template, fills out " title ", " NameSpace ", " field name and type " required for model class
It is charged in the some position symbol of correspondence, generates model category code string (or file), for.
4) call entity class template, " title ", " NameSpace ", " field name and type " required for entity class,
" Property Name and type " is filled in the some position symbol of correspondence, generates entity class code string (or file), for.
5) call data and process class template, " title ", " NameSpace ", " method name and returning required for operation class
Return Value Types " and " parameter name and type " be filled into correspondence some position symbol in, generate operation category code string (or file), supply make
With.
6) code or the file generated in above 3,4,5 steps is added in development environment, run and use.
Claims (6)
1. the method automatically generating and using code, it is characterised in that comprise the following steps:
Step one, data module is series-connected to data base by data base's concatenation character, obtains data base and the number of user setup
System property according to storehouse traffic table；Described system property includes table name, field name, field description, field data types, field
Could be for empty, primary key attribute with certainly increase attribute；
Step 2, code generation module gets described system property, and adds corresponding described system property to entity class mould
Plate, data model class template and data process class template, utilize character string assembling technique to generate entity class code, model category code
Process category code with data and store；
Step 3, described entity class code, described model category code and described data process category code and inherit platform base class is real
Body class base class method, model class base class method and data process class base class method；
Step 4, when user client send described traffic table data are carried out operation requests time, data
First execution module obtains user and asks and call data process category code to operate, according to the data class of user's request
Type instantiation is to corresponding described model category code, and described model category code is carried out by the reflex mechanism of described base class method
SQL statement is assembled, and database processing component receives and perform SQL statement, returns the operating result generated；
Described step 4, when described traffic table data to be operated by user, request content is inputted described data by user
Processing generic module, described entity class code can carry out automatic Proofreading, if simply described system existing to described data bank service table
Subordination carries out the amendment in content, and the most described entity class code, described model category code and operation category code do not change；
Described step 4, when described traffic table data to be operated by user, request content is inputted described data by user
Processing generic module, described entity class code can carry out automatic Proofreading, if user is the described system to described traffic table data
Attribute type and described system property quantity carry out increasing amendment, and the most described entity class code and described model category code all occur
Change accordingly and store, but described operation category code need not change.
The method automatically generated the most as claimed in claim 1 and use code, it is characterised in that described step 4, works as user
When client sends and described traffic table data carry out inquiring about operation requests, described database processing component returns result for bag
Described traffic table data at an interior data set, are increased, delete, repair when user sends in client by the content containing inquiry
When changing and inquire about operation requests, described database processing component returns and judges whether user carries out the behaviour increasing, deleting, revise
Making, if "Yes", return result is for increasing, delete, revising operation success or failure, if "No" returns Query Result.
The method automatically generated the most as claimed in claim 1 and use code, it is characterised in that described model class template is for containing
The function of the some position symbol that " table name ", " NameSpace ", " field name and type " having is corresponding.
The method automatically generated the most as claimed in claim 1 and use code, it is characterised in that described entity class template is for containing
The function of the some position symbol that " table name ", " NameSpace ", " field name and type ", " Property Name and type " having is corresponding.
The method automatically generated the most as claimed in claim 1 and use code, it is characterised in that described SQL statement template is
" table name ", " NameSpace " that contain, " method name and return Value Types " are, some position symbol corresponding to " parameter name and type "
Function.
The method automatically generated the most as claimed in claim 1 and use code, it is characterised in that described SQL statement is described
Can be deleted when user has asked, discharge spatial cache.
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