CN109446492A - Method for maintaining consistency of document editing data - Google Patents
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- CN109446492A CN109446492A CN201811206678.XA CN201811206678A CN109446492A CN 109446492 A CN109446492 A CN 109446492A CN 201811206678 A CN201811206678 A CN 201811206678A CN 109446492 A CN109446492 A CN 109446492A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000009466 transformation Effects 0.000 claims abstract description 17
- 238000012546 transfer Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 230000001131 transforming effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 2
- 230000004807 localization Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/10—Text processing
- G06F40/197—Version control
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/10—Text processing
- G06F40/12—Use of codes for handling textual entities
- G06F40/151—Transformation
- G06F40/16—Automatic learning of transformation rules, e.g. from examples
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/10—Text processing
- G06F40/166—Editing, e.g. inserting or deleting
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a method for maintaining consistency of document editing data, which comprises the steps of firstly keeping a high-level control transformation algorithm in an OT component in a collaborative editor unchanged, then expanding localization through a transfer function to achieve complexity reduction, selecting an SDVS single display version, and finally updating a transformation rule. The priority value assigned to its new value at Update generation is called the initial priority value for this operation, and based on PAS, a Single Display Version Effect (SDVE) for conflicting updates is defined. The invention provides a consistent MVSD technology, and expands the OT technology, so that on the basis of the OT technology, a plurality of users can simultaneously operate document objects, insert and delete the objects, particularly update (updates) operation, and the integrity and consistency of data can be ensured.
Description
Technical field
The invention belongs to text editing conversions, and in particular to a method of maintenance documents editing data consistency.
Background technique
With the raising of IT technology and information popularity, it is total that mechanism, individuals and organizations etc. has increasing need for progress resource
Enjoy, office automation and information transmitting etc., this also greatly enhances working efficiency.But with PC and hand
Machine terminal uses universal, the increase of task, the case where being frequently present of more people while writing a document, so as in difference
Multiple users in geographical location can browse and edit to a shared document in real time, to make the imperceptible geography of user
The obstacle that difference and space-time on position separate saves a large amount of time and efforts, the final work for improving user group for user
Make efficiency.
Document processing software is one of most widely used computer application, but existing Document processing software all cannot
Support real-time edition.Compared with plain text editor, Document processing software has richer data type (text, figure, figure
As etc.), more complicated file structure and more fully edit operation.In addition to support target creates and deletes, Document processing software
Also need support the operation such as user object Update attribute.
Operation conversion (OTS) is data sign processing technology in cooperative system, for supporting multiple users while being inserted into
With the technology for deleting the character in text document.This technology does not need to limit other users, and can reach in system
Realize system data consistency, OT has become the selection of the consistency maintenance technology of collaboration text editor.
The present invention includes using advanced algorithm during safeguarding documents editing consistency, which is
LTranControl is Sun (SUN CHENGZHENG) proposition and the disclosed prior art.
Summary of the invention
Goal of the invention: for the inconvenience and variability issues of prior art documents editing, the present invention provides a kind of maintenance text
The method of shelves editor's data consistency.
Technical solution: a method of maintenance documents editing data consistency includes the following steps:
(1) keep cooperative editing system and its operating system middle-and-high-ranking control transformation algorithm constant and transfer function is set；
(2) it is extended and is localized by transfer function, including the selection mono- version of display of SDVS；
(3) transformation rule is updated.
Further, step (1) cooperative editing system includes advanced control transformation algorithm and rudimentary transforming function transformation function, in advanced control
On the basis of algorithm processed is constant, new transfer function is set.
Further, steps are as follows for the advance control algorithm process and realization:
(1) if all terminal users execute same group of operation, the data copy in each terminal is the same；
(2) causality maintains: for any operation O1 and O2 operation pair, if O1- > O2, in all terminal users, O1
Operation is operated prior to O2；
(3) it is intended to relationship to maintain: for any operation O, the result that operation O is obtained is executed in other collaboration objects terminals
With on local terminal operate O obtain result.
(4) operation for meeting conditions above is able to maintain data consistency as a result, being unsatisfactory for three above condition will carry out
Execute change algorithm.
Further, the single version of display of step (2) is SDVS, including setting priority allocation scheme, is updated each new and old
The preferred value of attribute value, the specific steps of which are as follows:
(21) priority is set: when site-local creates and executes update operation, new value parameter being defined as priority
Available current peak in sequence, old value are lowest priority values；
(22) single display version is set: data conflicting in document to be edited being arranged and are updated, including with any
Sequence, which executes, updates operation, and its intermediate value in updating set of the combined result after operation in individually display object version is initial
Preferred value highest finally shows and updates operating result；
(23) conversion, which updates, obtains the value that SDVE is determined.
Further, the priority value setting that step (22) distributes to its new value when Update is generated operates first thus
Beginning preferred value is defined based on PAS for the single version of display effect updated that conflicts.
Further, step (3) includes in the update for first carrying out low initial priority value, and then executing has height initial excellent
The updated new value of high initial priority value is broadcast to low preferred value by the update being first worth, or is emptied the low newly value that operates and obtained correctly
SDVE value.
The utility model has the advantages that compared with prior art, the present invention its significant effect is: the first, the present invention proposes an OT
Extension, operational order includes the insertion and delete operation for cooperateing with word processing, and for supporting general update to grasp
Make (Updates), solves the conflict between concurrent update；The second, it devises the new multi version list of one kind and shows (MVSD) technology,
And it is integrated into entire OT frame, and OT extension is not only related to copy editor, but also can be extended to other classes
Like field, including with the related other application such as interactive rich media, strong applicability；Third passes through OT expansion technique (MVSD),
It may insure under more people's environment, text cooperative editor's data save integrality and consistency.
Specific embodiment
In order to which technical solution disclosed by the invention is described in detail, the present invention is below by specific embodiment and is done further
Elaboration.
Emphasis of the invention is that technical problem involved in general update operation is converted in research, and proposes a solution party
Case.OT component in cooperative editing system is a complicated system, is divided into two layers: advanced control transformation algorithm and rudimentary change
Exchange the letters number.According to their concurrency relation, controls transfer algorithm and be responsible for and determine which operation must be converted；Transfer function according to
Action type, parameter and other relationships, how decision operates at one is converted to another operation.It is supporting to update
(Updates) extension OT operation, our strategy are to maintain that advance control algorithm is constant, but add new with updating relevant turn
Exchange the letters number, this strategy allow to extend localization to reach reduction complexity.
However, the design of transforming function transformation function is not fully independently of control algolithm, different control algolithms has transforming function transformation function
Different requirements, and transforming function transformation function must adapted to the frame of corresponding control algolithm.Further, since OT is to support consistency
The core of maintenance, the design for being accordingly used in the transfer function updated must consider the needs of consistency maintenance simultaneously.
The present invention proposes consistent MVSD technology, OT technology is extended, so that more people users can be same in OT technical foundation
When operate document object, object is inserted into, is deleted, especially update (updates) operation and can ensure that data integrity
And consistency.
The basic thought of MVSD technology and MVSD are: when object needs to update (Updates) due to conflict operation, Ying
The multiple versions of internal maintenance target object, but a version is only shown on a user interface.Furthermore, it is possible to by activation and adjust
Show all versions of object one by one with multi version Managed Solution.The major advantage of MVSD is that it can be integrated into OT frame completely
In.
(1) multi version under OT safeguards MVM (Multi-version maintenance)
Because only showing a version every time in MVSD, the multiple versions for creating practical object in a document are not needed
, as long as being used for enough multi informations of alternative versions in internal maintenance, and there is dynamic creation at any time in systems and show in this
Show the mechanism of any version.In the case where creating a version every time in a document, we can be the institute of same target
There is version to keep a position in OT linear address space, and is in different times mapped to alternative versions one by one identical
Position.This strategy allows to stay update operation (Updates) attribute, without influencing whether OT linear space, and then maintains
The simplicity of Update related transfer function.It is quoted using single position in different times to identify multiple versions.
Above method and principle mean that we must keep other object version status informations except document.In OT frame
In frame, there is a historic buffer (HB) to execute operation for all in saving sequence, also including current state.All objects
It can be determined by the way that the operation in HB is sequentially applied to original document state.In other words, HB is for keeping document shape
The data structure of the OT of state and Obj State.Therefore, safeguarded using HB multiple versions status information be naturally, this
It can keep solving the problems, such as that data are inconsistent by saving all conflict operations in HB.
(2) single version of display selection SDVS (Single displayed version selection)
Other than the problem of safeguarding in OT frame and identify multiple versions, another technical problem is how to ensure
To carrying out consistent selection in single version of display in all collaborative sites.This problem by design priority allocation plan come
It solves, it is the update preferred value of each new and old attribute value.We require to distribute different updates according to the orderly mode of cause and effect
Operate " Updates " new value.A kind of method that this priority is generated in distributed collaboration system is using by operation shape
State vector (State Vector) and the ordering relation for operating site identifier.Present invention text is using positive integer (from 0 in simple terms
To unlimited) indicate the preferred value of causal ordering.
Definition 1: priority allocation scheme (PAS): when site-local creates and executes update operation (Update),
New value parameter is exactly available current peak in priority sequence, and old value is exactly lowest priority values (i.e. zero).
The priority value that its new value is distributed to when Update is generated is known as the initial priority value of this operation.Based on PAS, I
Define for conflict update single version of display effect (SDVE).
Definition 2: single display version effect (SDVE).
Give one group of conflicting update (Updates) G={ U1, U2 ..., Un }.
After executing all operations in G in any order, they must in the combined result of individually display object version
It must be that it shows result in the highest operation of all operation intermediate value initial priority values in G set.
The preferred value for updating operation (Updates) is determined by first floor system, and unrelated with action type and parameter, will not
There is relationship with their roles in collaborative work.The basic principle of this design is to separate mechanism from strategy: bottom
Layer single version display selection (mechanism) should keep simple and general, and high-level user demand can be by general mechanism
Coordination strategy module preferably met.After all, all versions internal maintenance all in MVSD, by calling high-level version
This Managed Solution can choose any version and be shown.
In conjunction with PAS and SDVE scheme, MVSD design is done, considers following three concurrent updates (Update):
1).U1(p,Color,(Red,3),(Dark,0)),
2).U2(p,Color,(Green,2),(Dark,0)),and
3).U3(p,Color,(Blue,1),(Dark,0)),
Color (Color) attribute to the same object is respectively set to U1-- from dark (Dark) to red in position P
(Red), U2-arrives blue to green and U3-.Obviously, these three operations have conflict, such as u1U u2Uu3 each other.Therefore,
Three versions (respectively by red, green and blue) of target object will be safeguarded by internal system.According to these operations and SDVE
Defined in preferred value, it is single show object version should be displayed in red because U1.new-value=(Red, 3) have it is highest
Initial priority value.Next discuss how to convert update (Updates) to obtain the value that SDVE is determined.
(3) (updates) transformation rule is updated
If knowing the Updates operation of one group of conflict in advance, is selected and executed more according to highest initial value
New operation (Updates) can be obtained by correct SDVE result.However, being executed more in distributed computation environment
It is that can not can know that all concurrent update operations (Updates) that will occur before new operation (Updates).This is because this
Ground, which updates operation (Updates), must be immediately performed to obtain high and fast response and experience, and cannot consider or wait whether have
The related concurrent operations of other positions (site).Present facing challenges are exactly how to carry out concurrent update operation (Updates)
Conversion executes conversion Updates operation so as to (1) with any operation order, can obtain the same Save result；(2) it converts
Update operating parameter includes that enough information can execute rollback (undo) operation, and next execute and create newly standby
Select all information of version.
It lifts two conflicts in previous examples and updates operation (Updates) U1 and U2.According to distributing to their preferred value,
No matter they are executed in what order, they must all realize identical SDVE result: the color value of single display object version is
It is red.Assuming that it is U2 to U1 that they, which operate the sequence executed, after executing operation U2, object color value is green.We are by holding
Row U1.as-is operation, does not change U1.new-value, just obtains correct SDVE value.In this case, the value of U2 can pass through
Execution U1 is IS, i.e., is worth no any change newly to U1 to realize correct SDVE result.In this case, the value of U2 just by
U1 is shielded.Another executes sequence: U1 to U2, and after U1 operation executes, the color value of object is red.We will
U1.new-value travels to U2.new-value, has just obtained correct SDVE value.
In general, can lead to if one group of update operation (Updates) is executed by the ascending order sequence of its initial priority value
Their natural shielding (masking) value is crossed to obtain correct SDVE as a result, property parameters without changing them.So
And if first carried out in the update operation (Update) with lower initial priority value, then executing has higher initial priority
The update of value operates (Updates), we can have more by the way that the new value (new-value) with higher operation is broadcast to
The operation of low preferred value is newly worth on (new-value), or empties the lower newly value (new-value) that operates and obtain correct SDVE
Value.
It defines 3TRNV (Transformation Rule for New Value):
The update of given 2 conflicts operates Ua and Ub, it is assumed that Ub is first carried out, and then executes Ua.If Ua.new-value
Preferred value be lower than Ub.new-value preferred value, execute Ub to Ua conversion in, Ua.new-value will be by Ub.new-
The replacement of value value, Ua.new-value are constant.
It can make to be replaced that the purpose for setting up update operation (Update) old value parameter (old-value), which is when doing rolling back action,
The value changed rolls back to original value.
It defines 4TROV (Transformation Rule for Old Value):
Given 2 conflicts update operation Ua and Ub, it is assumed that Ub is first carried out, and then executes Ua.Executing Ub conversion Ua operation
When, Ua.old-value has to be replaced by Ub.new-value.
Conflict resolution algorithm
conflictResolution(Ua,Ub)
{
if(Ua.new-value.priority<Ub.new-value.priority)
Ua.new-value=Ub.new-value；
Ua.old-value=Ub.new-value；
return Ua；
}
Based on above definition and algorithm, following example is provided.
Conversion operation and result of 1. object color of table under different execution sequences
2. rolling back action of table and result
Claims (6)
1. a kind of method for safeguarding documents editing data consistency, which comprises the steps of:
(1) keep cooperative editing system and its operating system middle-and-high-ranking control transformation algorithm constant and transfer function is set；
(2) it is extended and is localized by transfer function, including the selection mono- version of display of SDVS；
(3) transformation rule is updated.
2. a kind of method for safeguarding documents editing data consistency according to claim 1, which is characterized in that step (1)
Cooperative editing system includes advanced control transformation algorithm and rudimentary transforming function transformation function, on the basis of advance control algorithm is constant, setting
New transfer function.
3. a kind of method for safeguarding documents editing data consistency according to claim 2, which is characterized in that the height
Steps are as follows for grade control algolithm process and realization:
(1) if all terminal users execute same group of operation, the data copy in each terminal is the same；
(2) causality maintains: for any operation O1 and O2 operation pair, if O1- > O2, in all terminal users, O1 operation
It is operated prior to O2；
(3) be intended to relationship to maintain: for any operation O, executed in other collaboration objects terminals result that operation O is obtained with
O is operated on local terminal obtains the same result.
(4) operation for meeting conditions above is able to maintain data consistency as a result, being unsatisfactory for three above condition will be executed
Change algorithm.
4. a kind of method of maintenance documents editing data consistency according to claim 1, which is characterized in that step
(2) single version of display is SDVS, including setting priority allocation scheme, updates the preferred value of each new and old attribute value, specific
Steps are as follows:
(21) priority is set: when site-local creates and executes update operation, new value parameter being defined as priority sequence
In available current peak, old value be lowest priority values；
(22) single display version is set: data conflicting in document to be edited being arranged and are updated, including in any order
It executes and updates operation, and its intermediate value initial priority in updating set of the combined result after operation in individually display object version
It is worth highest, finally shows and update operating result；
(23) conversion, which updates, obtains the value that SDVE is determined.
5. a kind of method for safeguarding documents editing data consistency according to claim 1, which is characterized in that step (22)
The initial priority value operated thus is arranged in the priority value that its new value is distributed to when Update is generated, and is used for based on PAS definition
Conflict the single version of display effect updated.
6. a kind of method for safeguarding documents editing data consistency according to claim 1, which is characterized in that step (3)
Including the update with high initial priority value then being executed, by high initial priority value in the update for first carrying out low initial priority value
Updated new value is broadcast to low preferred value, or empties the low newly value that operates and obtain correct SDVE value.
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| CN201811206678.XA CN109446492A (en) | 2018-10-17 | 2018-10-17 | Method for maintaining consistency of document editing data |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110019279A (en) * | 2019-04-11 | 2019-07-16 | 北京字节跳动网络技术有限公司 | Collaboration update method, device, equipment and the storage medium of online document |
| CN113535206A (en) * | 2021-07-23 | 2021-10-22 | 上海幻电信息科技有限公司 | Multi-version code upgrading method and system |
| CN113590213A (en) * | 2021-06-24 | 2021-11-02 | 深圳开源互联网安全技术有限公司 | Component maintenance method, electronic device, and storage medium |
| CN114970471A (en) * | 2022-08-02 | 2022-08-30 | 上海有孚智数云创数字科技有限公司 | Method, system, device and medium for checking consistency of collaborative editing document |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110019279A (en) * | 2019-04-11 | 2019-07-16 | 北京字节跳动网络技术有限公司 | Collaboration update method, device, equipment and the storage medium of online document |
| CN110019279B (en) * | 2019-04-11 | 2020-12-04 | 北京字节跳动网络技术有限公司 | Online document collaborative updating method, device, equipment and storage medium |
| CN113590213A (en) * | 2021-06-24 | 2021-11-02 | 深圳开源互联网安全技术有限公司 | Component maintenance method, electronic device, and storage medium |
| CN113590213B (en) * | 2021-06-24 | 2023-04-25 | 深圳开源互联网安全技术有限公司 | Component maintenance method, electronic device and storage medium |
| CN113535206A (en) * | 2021-07-23 | 2021-10-22 | 上海幻电信息科技有限公司 | Multi-version code upgrading method and system |
| CN113535206B (en) * | 2021-07-23 | 2024-02-20 | 上海幻电信息科技有限公司 | Multi-version code upgrading method and system |
| CN114970471A (en) * | 2022-08-02 | 2022-08-30 | 上海有孚智数云创数字科技有限公司 | Method, system, device and medium for checking consistency of collaborative editing document |
| CN114970471B (en) * | 2022-08-02 | 2022-10-21 | 上海有孚智数云创数字科技有限公司 | Method, system, device and medium for checking consistency of collaborative editing document |
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