CN108681456A - Data structure access method, computer installation and the storage medium of edition compatibility - Google Patents
Data structure access method, computer installation and the storage medium of edition compatibility Download PDFInfo
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- CN108681456A CN108681456A CN201810285671.5A CN201810285671A CN108681456A CN 108681456 A CN108681456 A CN 108681456A CN 201810285671 A CN201810285671 A CN 201810285671A CN 108681456 A CN108681456 A CN 108681456A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/40—Transformation of program code
- G06F8/41—Compilation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/30—Creation or generation of source code
- G06F8/31—Programming languages or programming paradigms
- G06F8/315—Object-oriented languages
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
- G06F9/4488—Object-oriented
- G06F9/449—Object-oriented method invocation or resolution
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
- G06F9/4488—Object-oriented
- G06F9/4492—Inheritance
Abstract
The invention discloses a kind of data structure access methods of edition compatibility, including step：The content of the data object preserved as needed, compiling generates attribute mapping table in the data object preserved, the attribute mapping table includes generic attribute and attribute value, wherein the generic attribute structure is for the MAP key-value pairs and attribute value being compiled by way of returning；Data object list is defined according to the data object of storage, the generic attribute of the data object read is determined when reading the data object, the attribute value in the attribute mapping table of different data object is read according to the generic attribute of data object, with the reading of complete paired data object.The data structure access method of edition compatibility in the present invention can be compatible with the data of each version before reading or after changing.The present invention also provides a kind of computer installation and computer readable storage mediums.
Description
Technical field
The present invention relates to field of computer technology, and in particular to a kind of data structure access method of edition compatibility calculates
Machine device and computer readable storage medium.
Background technology
More folded software version is a gradual and inevitable process, some software functions are always brought during more folded
Addition, change, and then the data structure and content difference of new and old edition software storage management can be made, but often old edition
The data information that this software generates is meaningful, needs to be retained and can be used, this requires that must have a set of
Complete method ensures the data compatibility between different editions.
Data attribute changes in frequent data storage processing at present, and cannot achieve early version can not be compatible with the number of new version
According to；And existing data compatibility method is substantially the information that some mark versions are added to each edition data, then new
Version software development process in by code be that different editions data convert to realize data compatibility, but from actual use
From the point of view of in effect, above-mentioned data compatibility scheme is using upper and imperfect, and major embodiment is in the following areas：
1, it can only accomplish that new version is compatible with legacy version, it is mutually simultaneous cannot to accomplish that data are read in the storage between different editions
Hold；It is possible to occur the data of the software of legacy version using new version completely in certain occasions；
2, it needs to safeguard that an individual rough set theory method needs to safeguard if there is N number of version for each two version number
2NA conversion method needs extra work, and work can become extremely complex and be easy out when there are many method of maintenance
It is wrong；
3, the data structure information of each old version must be retained and to this in each later release stores program
The maintenance of a little information, process performance have loss, safeguard that code will gradually expand, if information loses or safeguards that code has omission,
Then lead to the compatible failure to early version data；
4, Data Serialization (such as CArchive in MFC) is usually the sequential storage to data element property, disadvantage
End is non expansivity, such as a file kept, and can not normally be opened under the software of data attribute variable change.
Therefore, it is necessary to provide a kind of data structure access method of new edition compatibility to solve above-mentioned technical problem.
Invention content
The main purpose of the present invention is to provide a kind of data structure access method of new edition compatibility, computer installations
And storage medium, the data to solve different editions software can not be compatible with the technical problem with rough set theory method complexity.
To achieve the above object, the present invention provides a kind of data structure access method of edition compatibility, including step：
The content of the data object preserved as needed compiles life in the data object preserved
At attribute mapping table, which includes generic attribute and attribute value, wherein the generic attribute structure is by for the side returned
The MAP key-value pairs and attribute value that formula is compiled；
Data object list is defined according to the data object of storage, reading is determined when reading the data object
The generic attribute of data object reads the attribute value in the attribute mapping table of different data object according to the generic attribute of data object,
With the reading of complete paired data object.
Further, further include step：
An abstract data generic attribute class, including memory interface function and reading interface function are defined, for realizing data
The storage and reading of the attribute of object itself.
Further, the attribute mapping table is the mapping table of the Map interfacings based on Hash table.
Further, it is described it is compiled after the data object preserve content include data object generic
Property, the unique identities identification code of object, by the transformed unique index of attribute-name and attribute value.
Further, the content of the data object preserved as needed, in the number preserved
After the step of compiling generates attribute mapping table in object, further include：
When being stored to the data object preserved, set a property table before write-in；
Object starting character is written in the content of the data object preserved as needed；
Object end mark is written in the content of the data object preserved as needed.
Further, described that data object list is defined according to the data object of storage, reading the data pair
As when determine read data object generic attribute, according to the generic attribute of data object read different data object attribute map
Attribute value in table further includes before the step of the reading of complete paired data object：
When being read out to the data object preserved, set a property table before reading；
The generic attribute of the data object is obtained according to the object starting character and the object end mark.
Further, further include step：
Define the type of new generic attribute；
According to the content of data object, the new generic attribute and attribute value is written, compiling generates corresponding attribute mapping
Table.
Further, the definition data object list determines the generic attribute of the data object read, according to data object
Generic attribute read the attribute value in the attribute mapping table of different data object, the step of with the reading of complete paired data object,
It specifically includes：
Data object list is defined according to the data object of storage, reading is determined when reading the data object
The quantity and generic attribute of data object read the category in the attribute mapping table of different data object according to the generic attribute of data object
Property value；
According to the attribute value in the attribute mapping table of the data object of reading, the reading of complete paired data object.
The present invention also provides a kind of computer installations, including：It memory, processor and is stored on the memory and can
The computer program run on the processor, the computer program realize any of the above-described when being executed by the processor
The step of data structure access method of the edition compatibility.
The present invention also provides a kind of computer readable storage medium, calculating is stored on the computer readable storage medium
Machine program, the computer program realize the data structure access of edition compatibility described in any one of the above embodiments when being executed by processor
The step of method.
In the inventive solutions, by the content of the data object preserved as needed, in the needs
Compiling generates attribute mapping table in the data object preserved, which includes generic attribute and attribute value, wherein institute
It is for the MAP key-value pairs and attribute value being compiled by way of returning to state generic attribute structure；Then according to the number of storage
According to object definition data object list, the generic attribute of the data object read is determined when reading the data object, according to number
The attribute value in the attribute mapping table of different data object is read according to the generic attribute of object, with the reading of complete paired data object.
The data structure access method of edition compatibility in the present invention can be compatible with each version before reading or after changing
Data realize the access to isomery object data, and distinguish without version using the technology of object-oriented attribute mapping table,
System voluntarily realizes accessing operation through the storage according to the attribute of mapping table progress data, each data type, without fixed in advance
Adopted data type, the Attribute class that programmer newly defines need to only inherit same base class.
Description of the drawings
Fig. 1 is the flow chart of the data structure access method of the edition compatibility in one embodiment of the invention；
Fig. 2 is the sub-process figure of step S20 in Fig. 1；
Fig. 3 is the flow chart of the data structure access method of the edition compatibility in another embodiment of the present invention；
Fig. 4 is the flow chart of the data structure access method of the edition compatibility in further embodiment of this invention；
Fig. 5 is the flow chart of the data structure access method of the edition compatibility in yet another embodiment of the invention；
Fig. 6 is the structural schematic diagram of the computer installation in one embodiment of the invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that institute's directional instruction (such as up, down, left, right, before and after, transverse direction, diameter in the embodiment of the present invention
To, it is horizontal, vertical ...) be only used for explaining under a certain particular pose (as shown in the picture) the relative position pass between each component
System, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
It indicates or implies its relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, can also be
Electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements or two
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the technical solution between each embodiment of the present invention can be combined with each other, but must be general with this field
Logical technical staff can be implemented as basis, will be understood that when the combination of technical solution appearance is conflicting or cannot achieve this
The combination of technical solution is not present, also not the present invention claims protection domain within.
The embodiment of the present invention is realized with C++, but is not limited to the particular techniques such as C++ or MFC, can use any object-oriented
Program language realize.
Referring to FIG. 1, being to provide a kind of data structure access method 101 of edition compatibility in one embodiment of the invention
The data structure access method 101 of method flow diagram, the edition compatibility includes the following steps：
Step S10, the content of the data object preserved as needed, in the data object preserved
Middle compiling generates attribute mapping table, which includes generic attribute and attribute value, wherein the generic attribute structure is to pass through
The MAP key-value pairs and attribute value being compiled for the mode returned.
Specifically, the attribute mapping table is the mapping table of the Map interfacings based on Hash table.
Optionally, it is described it is compiled after the data object preserve content include data object generic
Property, the unique identities identification code of object, by the transformed unique index of attribute-name and attribute value.
In a preferred embodiment, the content of the data object preserved as needed is needing data to be saved
In object, the element structure of the attribute mapping table (m_PrpMap) of design can be：
std::map<long,BaseProp*>m_PrpMap；
Step S20 defines data object list according to the data object of storage, true when reading the data object
Surely the generic attribute of the data object read, according in the attribute mapping table of the generic attribute of data object reading different data object
Attribute value, with the reading of complete paired data object.
In the present embodiment, it by the content of the data object preserved as needed, is preserved described
Data object in compiling generate attribute mapping table, which includes generic attribute and attribute value, wherein the generic attribute
Structure is for the MAP key-value pairs and attribute value being compiled by way of returning；Then fixed according to the data object of storage
Adopted data object list determines the generic attribute of the data object read when reading the data object, according to data object
Generic attribute reads the attribute value in the attribute mapping table of different data object, with the reading of complete paired data object.In the present invention
Edition compatibility data structure access method can be compatible with read before or change after each version data, utilize
The technology of object-oriented attribute mapping table realizes the access to isomery object data, and is distinguished without version that system is through basis
The attribute of mapping table carries out the storage of data, each data type voluntarily realizes accessing operation, without pre-defining data type,
The Attribute class that programmer newly defines need to only inherit same base class.
Specifically, for generating attribute mapping table by being compiled in the data object preserved, come real
Existing different editions are compatible with the storage to data object, can include following content in a program：
In addition, attribute value/field index (key) of the data object need not be saved in file, institute in file
Data be all attribute value, this point be also with the very different place of other schemes, it is also faster than other scheme processing speeds,
Space availability ratio is more preferable.
Referring to FIG. 2, further, the step S20 can be specifically included：
Step S21 defines data object list according to the data object of storage, true when reading the data object
Surely the quantity and generic attribute of the data object read, the attribute that different data object is read according to the generic attribute of data object map
Attribute value in table；
Step S22, according to the attribute value in the attribute mapping table of the data object of reading, complete paired data object
It reads.
Specifically, for the storage and reading of data object, a data object list can be increased in software systems
M_ObjList, following code snippet：
vector<BaseData*>m_ObjList；
Can include following code snippet for the storage of data object：
Can include following code snippet for the reading of data object：
Wherein it is possible to understand, this exclusively enjoys different data, can voluntarily change, increase the generic of data object
Property and attribute value.
Further, referring to FIG. 3, in one embodiment, the data structure access method 101 of the edition compatibility is also wrapped
Include step：
Step S30 defines an abstract data generic attribute class, including memory interface function and reading interface function, is used for
Realize the storage and reading of the attribute itself of data object.
Further, referring to FIG. 4, further including step after the step S10 in one embodiment：
Step S11, when being stored to the data object preserved, set a property table before write-in；
Object starting character is written in step S12, the content of the data object preserved as needed；
Object end mark is written in step S13, the content of the data object preserved as needed.
It is understood that in the present embodiment, before the step S20, further including accordingly：
Step S14, when being read out to the data object preserved, set a property table before reading；
Step S15 obtains the generic attribute of the data object according to the object starting character and the object end mark.
In the present embodiment, by table and the object starting of setting a property before the data object write-in preserved
Symbol and object end mark, can further structural data structure, at the time of reading by the reading to the table that preceding sets a property, and
Identification to the object starting character and the object end mark can accelerate storage and the reading speed of data.
Optionally, referring to FIG. 5, in one embodiment, the data structure access method 101 of the edition compatibility further includes
Step：
Step S41 defines the type of new generic attribute；
The new generic attribute and attribute value is written according to the content of data object in step S42, and compiling generates corresponding
Attribute mapping table.
For new data object, when needing that new generic attribute is arranged, can by define new generic attribute type come
Expanded.Without pre-defining data type, the Attribute class that programmer newly defines need to only inherit same base class.
class BaseProp{
virtual void Save(File*pFile){}
virtual void Read(File*pFile){}
}
Specifically, the realization method for defining new generic attribute can include following code snippet：
In addition, with reference to Fig. 6, the present invention also proposes that a kind of computer installation 200, the computer installation 200 include：Storage
Device 11, processor 12 and it is stored in the computer program that can be run on the memory 11 and on the processor 12, it is described
Computer program realizes method as described below when being executed by the processor 12：
Step S10, the content of the data object preserved as needed, in the data object preserved
Middle compiling generates attribute mapping table, which includes generic attribute and attribute value, wherein the generic attribute structure is to pass through
The MAP key-value pairs and attribute value being compiled for the mode returned.
Specifically, the attribute mapping table is the mapping table of the Map interfacings based on Hash table.
Optionally, it is described it is compiled after the data object preserve content include data object generic
Property, the unique identities identification code of object, by the transformed unique index of attribute-name and attribute value.
In a preferred embodiment, the content of the data object preserved as needed is needing data to be saved
In object, the element structure of the attribute mapping table (m_PrpMap) of design can be：
std::map<long,BaseProp*>m_PrpMap；
Step S20 defines data object list according to the data object of storage, true when reading the data object
Surely the generic attribute of the data object read, according in the attribute mapping table of the generic attribute of data object reading different data object
Attribute value, with the reading of complete paired data object.
In the present embodiment, it by the content of the data object preserved as needed, is preserved described
Data object in compiling generate attribute mapping table, which includes generic attribute and attribute value, wherein the generic attribute
Structure is for the MAP key-value pairs and attribute value being compiled by way of returning；Then fixed according to the data object of storage
Adopted data object list determines the generic attribute of the data object read when reading the data object, according to data object
Generic attribute reads the attribute value in the attribute mapping table of different data object, with the reading of complete paired data object.In the present invention
Edition compatibility data structure access method can be compatible with read before or change after each version data, utilize
The technology of object-oriented attribute mapping table realizes the access to isomery object data, and is distinguished without version that system is through basis
The attribute of mapping table carries out the storage of data, each data type voluntarily realizes accessing operation, without pre-defining data type,
The Attribute class that programmer newly defines need to only inherit same base class.
Further, the step S20, can specifically include：
Step S21 defines data object list according to the data object of storage, true when reading the data object
Surely the quantity and generic attribute of the data object read, the attribute that different data object is read according to the generic attribute of data object map
Attribute value in table；
Step S22, according to the attribute value in the attribute mapping table of the data object of reading, complete paired data object
It reads.
Further, further include step：
Step S30 defines an abstract data generic attribute class, including memory interface function and reading interface function, is used for
Realize the storage and reading of the attribute itself of data object.
Further, further include step after the step S10：
Step S11, when being stored to the data object preserved, set a property table before write-in；
Object starting character is written in step S12, the content of the data object preserved as needed；
Object end mark is written in step S13, the content of the data object preserved as needed.
It is understood that before the step S20, further include accordingly：
Step S13, when being read out to the data object preserved, set a property table before reading；
Step S14 obtains the generic attribute of the data object according to the object starting character and the object end mark.
Optionally, further include step：
Step S41 defines the type of new generic attribute；
The new generic attribute and attribute value is written according to the content of data object in step S42, and compiling generates corresponding
Attribute mapping table.
The present invention also provides a kind of computer readable storage medium, calculating is stored on the computer readable storage medium
Machine program, the computer program realize the data structure of the edition compatibility described in any of the above-described embodiment when being executed by processor
The step of access method.
It is understood that in the description of this specification, reference term " embodiment ", " another embodiment ", " other
The description of embodiment " or " first embodiment~N embodiments " etc. means specific spy described in conjunction with this embodiment or example
Sign, structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned
The schematic representation of term may not refer to the same embodiment or example.Moreover, the specific features of description, structure, material
Or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that process, method, article or system including a series of elements include not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
There is also other identical elements in the process of element, method, article or system.
The preferred embodiment of the present invention is not intended to limit the scope of the invention, every under the design of the present invention,
Using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/it is used in other relevant technologies indirectly
Field is included in the scope of patent protection of the present invention.
Claims (10)
1. a kind of data structure access method of edition compatibility, which is characterized in that including step：
The content of the data object preserved as needed, compiling, which generates, in the data object preserved belongs to
Property mapping table, which includes generic attribute and attribute value, wherein the generic attribute structure be for by way of returning into
The MAP key-value pairs and attribute value of row compiling；
Data object list is defined according to the data object of storage, the data read are determined when reading the data object
The generic attribute of object reads the attribute value in the attribute mapping table of different data object according to the generic attribute of data object, with complete
The reading of paired data object.
2. the data structure access method of edition compatibility according to claim 1, which is characterized in that further include step：
An abstract data generic attribute class, including memory interface function and reading interface function are defined, for realizing data object
Attribute itself storage and reading.
3. the data structure access method of edition compatibility according to claim 1, which is characterized in that the attribute mapping table
It is the mapping table of the Map interfacings based on Hash table.
4. the data structure access method of edition compatibility according to claim 1, which is characterized in that it is described it is compiled after
The content of the data object preserved includes the generic attribute of data object, the unique identities identification code of object, by attribute
The transformed unique index of name and attribute value.
5. the data structure access method of edition compatibility according to claim 1, which is characterized in that it is described as needed into
The step of content for the data object that row preserves, compiling generates attribute mapping table in the data object preserved
Later, further include：
When being stored to the data object preserved, set a property table before write-in；
Object starting character is written in the content of the data object preserved as needed；
Object end mark is written in the content of the data object preserved as needed.
6. the data structure access method of edition compatibility according to claim 5, which is characterized in that described according to storage
The data object defines data object list, and the generic attribute of the data object read is determined when reading the data object,
The attribute value in the attribute mapping table of different data object is read according to the generic attribute of data object, with complete paired data object
Before the step of reading, further include：
When being read out to the data object preserved, set a property table before reading；
The generic attribute of the data object is obtained according to the object starting character and the object end mark.
7. the data structure access method of edition compatibility according to claim 1, which is characterized in that further include step：
Define the type of new generic attribute；
According to the content of data object, the new generic attribute and attribute value is written, compiling generates corresponding attribute mapping table.
8. the data structure access method of edition compatibility according to claim 1, which is characterized in that the definition data pair
As list, the generic attribute of the data object read is determined, the attribute of different data object is read according to the generic attribute of data object
Attribute value in mapping table the step of with the reading of complete paired data object, specifically includes：
Data object list is defined according to the data object of storage, the data read are determined when reading the data object
The quantity and generic attribute of object read the attribute in the attribute mapping table of different data object according to the generic attribute of data object
Value；
According to the attribute value in the attribute mapping table of the data object of reading, the reading of complete paired data object.
9. a kind of computer installation, which is characterized in that including：It memory, processor and is stored on the memory and can be
The computer program run on the processor realizes such as claim 1- when the computer program is executed by the processor
The step of data structure access method of 8 any one of them edition compatibilities.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program realizes the data such as claim 1-8 any one of them edition compatibilities when the computer program is executed by processor
The step of structure access method.
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Cited By (1)
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| CN112328278A (en) * | 2020-10-26 | 2021-02-05 | 浙江大华技术股份有限公司 | Method, platform and storage medium for installing and upgrading equipment in network |
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