CN116484810A - Method for real-time collaborative online editing of OFD document - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000000889 atomisation Methods 0.000 claims abstract description 67
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000009877 rendering Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000012217 deletion Methods 0.000 claims description 3
- 230000037430 deletion Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
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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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- 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
- G06F40/186—Templates
Abstract
The invention relates to the technical field of document editing, and discloses a real-time collaborative online editing method of an OFD document, which is used for online editing of the OFD document, wherein a front-end storage technology is firstly used at a browser end to store all local and received atomization operations, and the browser end uses a local OFD editor program to modify and render according to atomization operation instructions; collaborative editing, multiple users open the same OFD online document at multiple browser ends. Editing is achieved through an OT algorithm; first, an operation data structure is atomized, wherein the operation data structure comprises an operation sequence number, a seal, a document code, an operation type, an operation node path, a starting position, an ending position, an operation value and a user account number. The method and the system can greatly reduce the operation pressure of the server in collaborative editing, and greatly improve the speed of online editing, thereby providing better user experience.
Description
Technical Field
The invention relates to the technical field of document editing, in particular to a method for real-time collaborative online editing of an OFD document.
Background
OFD, open format document, is the national format document format defined by the standard. The term "layout document" refers to a page content described by the layout document, which has appearance information such as fixed positions, sizes, colors and the like, so that the display effect of the page content on all terminals is ensured to be completely fixed and consistent.
The OFD online editor realizes the functions of analysis, display, editing, generation and the like of the OFD document based on typescript language. The virtual OFD file is a tree structure created by an OFD online editor and simulates the file structure and the file of the OFD according to the OFD document standard in the form of js objects and classes. The IndexedDB is a browser-side database that can be created and operated by a web script program. It allows for storing large amounts of data, provides a lookup interface, and also enables indexing. These are not available in localStorage. The IndexdDB does not belong to a relational database (does not support SQL query statements), more closely to a NoSQL database, in terms of database type. A database is a "repository" that organizes, stores, and manages data according to a data structure. Is a collection of large amounts of data stored in a computer for a long period of time, organized, sharable, and uniformly managed. The OT algorithm, the operation transformation algorithm, and an algorithm used for maintaining consistency of different data copies in a collaborative technology. And in different terminals, according to different operation sequences, the operation is adjusted so as to keep the data consistency.
Collaborative editing of online documents is increasingly applied to online offices, as is online offices. The OFD document is used as a standard of a domestic format document, online collaborative editing is not realized all the time, and popularization of the OFD document is affected. Along with wider and wider application of OFD documents, the application scenes of OFD files are more and more, and the demand of users cannot be met by simply displaying the OFD files. The OFD document needs to be created and edited online, and further requires online collaborative editing of the OFD document.
Currently, google online documents, microsoft online documents, gold mountain online documents, etc. can provide collaborative editing functions of online documents. However, none of these online documents support online editing of the OFD document, nor do they support collaborative editing of the OFD document. In the existing online document editing function, a browser end generally sends atomization operation data based on DOM operation of the browser end, a server end receives the atomization operation data, converts the DOM operation of the browser end into editing operations such as analysis and conversion of an online document, modifies the online document, then sends the atomization operation data based on the DOM operation of the browser end to the browser end, and finally triggers the change and rendering of the browser end. The browser end is just a rendering tool of a page, and does not do document editing operation. The scheme requires the server to do a large amount of online document editing operation, and the speed is highly dependent on the performance and network condition of the server. Once there is a problem with the network or a problem with the server-side service, the entire editing operation cannot be performed.
In summary, no online collaborative editing function of an OFD document is provided by an enterprise in the market, and a method for real-time collaborative online editing of the OFD document is needed to solve the problem.
Disclosure of Invention
The invention aims to provide a method for real-time collaborative online editing of an OFD document. After the atomic operation of the user is serialized through collaborative editing, the OFD virtual file is operated according to the data of the atomic operation, the virtual dom tree of the corresponding level is modified according to the OFD virtual file, and finally the virtual dom tree is rendered to the browser end. The server side is only used as a receiving and transmitting management center of resource service and atomization operation of the OFD file, and does not need to synchronously edit the OFD online document, and corresponding editing operation is carried out on each browser side. The server side stores the atomization operation into a database, and simultaneously uses network transmission to receive and broadcast atomization operation data, thereby realizing real-time online editing.
The browser end and the server are mutually independent in editing operation, and only atomization operation data needs to be interacted between the browser end and the server. Therefore, the operation pressure of the server in the collaborative editing can be greatly reduced, the speed of online editing is greatly improved, and better user experience is provided. Moreover, even if a problem occurs at the server side, editing is not affected as long as it has already been started locally. Moreover, the local browser end can store the corresponding atomization operation, so long as the network or the server is recovered to be normal, the synchronization of the documents can be realized, and the existing editing operation record is not lost.
The invention is realized in the following way:
the invention provides a method for real-time collaborative online editing of an OFD document, which is specifically implemented according to the following steps:
S 1 firstly, storing all local and received atomization operations at a browser end by using a front-end storage technology, modifying and rendering the OFD documents according to atomization operation instructions by using a local OFD editor program at the browser end; the front-end storage technology comprises an IndexdDB database, a localtorage or a self-built js object, the browser end and the server are independent during editing operation, and only atomization operation data needs to be interacted between the browser end and the server.
S 2 Collaborative editing, wherein multiple users open the same OFD online document at multiple browser ends;
S 2.1 downloading, analyzing and displaying the OFD online document at the browser end; the method is realized by an OFD online editor;
S 2.2 editing OFD documents by each browser end, generating and locally storing atomization operation data, and transmitting the atomization operation data to a server end in a network transmission mode;
S 2.3 when the browser end edits, storing the atomized data by using a front-end storage mode including an IndexdDB or a localstorage mode locally, and simultaneously creating a queue, and sequentially sending a strip to the server end; clearing from the queue if the transmission is successful, and reserving in the queue if the transmission is not successful, and continuously polling for transmission;
S 2.4 the server side receives the atomization operation data sent by the browser side in a network transmission mode, stores the atomization operation data in a database in sequence and broadcasts the atomization operation data to each browser side in sequence;
S 2.5 when the server side transmits the network, each time receives one piece of atomization operation data, one global independent variable of the same document is generated, and the global independent variable is assigned to the corresponding operation data; the operation data are stored in a database of a server end, the operation data are broadcasted, and when the operation data are received, the browser end which sends the operation data changes the corresponding operation serial number into the corresponding value of the self-increment variable and stores the corresponding operation serial number into the browser end;
the browser transmits the atomization operation data through a network, receives the atomization operation data broadcast by the server, modifies the OFD virtual file according to the atomization operation data by the editor, and re-renders the DOM of the browser according to the OFD virtual file by the editor;
when the browser end operation is finished, the server end modifies the stored OFD file of the server according to the atomization operation data recorded by the database and stores the OFD file; wherein the storing of the OFD file of the modification server in the browser side includes storing in an IndexdDB, localtorage or js object.
S 3 Editing is realized through an OT algorithm; firstly, an atomization operation data structure is provided, wherein the atomization operation data structure comprises an operation sequence number, a seal, a document code, an operation type, an operation node path, a starting position, an ending position, an operation value and a user account number; the operation types include insertion, deletion of nodes, and insertion and editing of text.
The operation path comprises a path of an operation node corresponding to the virtual OFD file, the virtual OFD file is in a tree structure, and the corresponding operation node can be found through the operation node path along the branch of the tree structure.
The starting position is the starting position of the selected node or text; the ending position is the ending position of the selected node or text; when the operation value comprises a newly added document, the operation value is information of the newly added document; when a page is newly added, the page information is the information of the newly added page; when the control is newly added, the control information is newly added; when the attribute is operated, the value is newly added and inserted; the user account is used for identifying the name of the operated user; whether the operation of the local browser is performed is judged by the user name.
When the browser receives the atomization operation data sent by the server, the OFD online editor is called according to the collaborative editing method, the object of the virtual OFD file is confirmed to be operated through the operation node, the object of the selected virtual OFD file is edited according to the operation type, the operation value and the starting and ending positions, then the node of the bound virtual DOM tree is determined, the corresponding rendering method is called, and the virtual OFD file is rendered to the browser.
Further, the operation sequence number includes a self-increasing sequence number in which the same document generated by the server side is unique; when the browser sends, the value is null; and when the network transmission return value is received, assigning the operation sequence number generated by the server side.
Further, the stamp is a unique UUID generated based on the timestamp, and is used for identifying the operation itself, and the document code is a unique code for determining the online OFD file stored at the server side, and is generated by the server side file management system.
Further, online editing is carried out on the OFD document by adopting typescript language, and the OFD document is packaged into Javascript language and is deployed at a server side node. Js and a browser side.
Compared with the prior art, the invention has the beneficial effects that:
1. the running pressure of the server in the collaborative editing can be greatly reduced, and the speed of online editing is greatly improved, so that better user experience is provided. Moreover, even if a problem occurs at the server side, editing is not affected as long as it has already been started locally. Moreover, the local browser end can store the corresponding atomization operation, so long as the network or the server is recovered to be normal, the synchronization of the documents can be realized, and the existing editing operation record is not lost.
2. Through an OFD online editor, using management and OT algorithm of real-time collaborative editing and atomization operation data, synchronously rendering editing operation of all people at a browser end, and finally storing the edited OFD document at a server end; thereby realizing the function of real-time collaborative online editing of the OFD document.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a flow chart of the real-time collaborative editing of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Referring to fig. 1-2, a method for real-time collaborative online editing of an OFD document is specifically implemented according to the following steps:
the method comprises the following steps:
S 1 firstly, storing all local and received atomization operations at a browser end by using a front-end storage technology, modifying and rendering the OFD documents according to atomization operation instructions by using a local OFD editor program at the browser end; the front-end storage technology comprises an IndexdDB database, a localtorage or a self-built js object, the browser end and the server are independent during editing operation, and only atomization operation data needs to be interacted between the browser end and the server. And the other browser ends execute the atomization operation data downwards in sequence according to the current corresponding operation serial numbers. Thus, uniqueness and correctness of the OT operation sequence can be ensured.
S 2 Collaborative editing, wherein multiple users open the same OFD online document at multiple browser ends;
S 2.1 downloading, analyzing and displaying OFD online document at browser endThe method comprises the steps of carrying out a first treatment on the surface of the The method is realized by an OFD online editor;
S 2.2 editing OFD documents by each browser end, generating and locally storing atomization operation data, and transmitting the atomization operation data to a server end in a network transmission mode;
S 2.3 when the browser end edits, storing the atomized data by using a front-end storage mode including an IndexdDB or a localstorage mode locally, and simultaneously creating a queue, and sequentially sending a strip to the server end; clearing from the queue if the transmission is successful, and reserving in the queue if the transmission is not successful, and continuously polling for transmission;
S 2.4 the server side receives the atomization operation data sent by the browser side in a network transmission mode, stores the atomization operation data in a database in sequence and broadcasts the atomization operation data to each browser side in sequence;
S 2.5 when the server side transmits the network, each time receives one piece of atomization operation data, one global independent variable of the same document is generated, and the global independent variable is assigned to the corresponding operation data; the operation data are stored in a database of a server end, the operation data are broadcasted, and when the operation data are received, the browser end which sends the operation data changes the corresponding operation serial number into the corresponding value of the self-increment variable and stores the corresponding operation serial number into the browser end;
the browser transmits the atomization operation data through a network, receives the atomization operation data broadcast by the server, modifies the OFD virtual file according to the atomization operation data by the editor, and re-renders the DOM of the browser according to the OFD virtual file by the editor;
when the browser end operation is finished, the server end modifies the stored OFD file of the server according to the atomization operation data recorded by the database and stores the OFD file; wherein the storing of the OFD file of the modification server in the browser side includes storing in an IndexdDB, localtorage or js object.
S 3 Editing is realized through an OT algorithm; firstly, an atomization operation data structure is provided, wherein the atomization operation data structure comprises an operation sequence number, a seal, a document code, an operation type, an operation node path, a starting position, an ending position, an operation value and a user account number; operation typeIncluding insertion, deletion of nodes, and insertion and editing of text.
The operation path comprises a path of an operation node corresponding to the virtual OFD file, the virtual OFD file is in a tree structure, and the corresponding operation node can be found through the operation node path along the branch of the tree structure.
The starting position is the starting position of the selected node or text; the ending position is the ending position of the selected node or text; when the operation value comprises a newly added document, the operation value is information of the newly added document; when a page is newly added, the page information is the information of the newly added page; when the control is newly added, the control information is newly added; when the attribute is operated, the value is newly added and inserted; the user account is used for identifying the name of the operated user; whether the operation of the local browser is performed is judged by the user name.
When the browser receives the atomization operation data sent by the server, the OFD online editor is called according to the collaborative editing method, the object of the virtual OFD file is confirmed to be operated through the operation node, the object of the selected virtual OFD file is edited according to the operation type, the operation value and the starting and ending positions, then the node of the bound virtual DOM tree is determined, the corresponding rendering method is called, and the virtual OFD file is rendered to the browser.
In this embodiment, the following describes how the atomization operation received by the browser end finally realizes real-time synchronous display of the browser end by taking text operation as an example:
1) And the browser receives the atomization operation data of a text operation.
2) The editor first determines from the stamp (unique UUID) whether the received data is locally sent out or not.
3) If the data is locally transmitted, modifying the sequence number of the received data and the sequence number of the local operation data. No other operations need to be performed. Because the native operation has already performed the editing operation by the native editor.
Note that: when the local operation sends the atomization data, the serial number is empty, but the server receives the atomization data, generates an operation serial number and sends the operation serial number to the browser side. When the browser receives the data, the operation serial number of the data is assigned as the generated serial number of the server. Thus, the browser only needs to verify the atomization operation data set with the null sequence number.
4) If not locally transmitted data, the description is the received operation of the other browser side. It is determined whether the operation sequence number is a self-increment sequence number of the operation sequence number of the local cache.
Note that: the editor of each browser side will buffer the last operation sequence number.
5) If the operation data is not the self-increment sequence number, the request server side is required to acquire the operation data of the corresponding self-increment sequence number, compares the operation data with the atomization operation data stored in the local database, integrates the operation data according to a diff algorithm, and then performs transformation operation. Thus, the real-time synchronization of the data of each browser end during collaborative editing is ensured.
6) If the number is the self-increasing number, the corresponding node on the virtual OFD file is found according to the object path, and all information of the node is obtained. Such as text information: 'abc'.
7) And then, calling a corresponding operation method according to the operation type, and then, operating the nodes of the virtual OFD file according to the starting position, the ending position and the operation content. For example, inserting d after a, calling insert (d, 1); i.e. insert d after the first character. The text of this node will be modified to 'adbc'.
8) After editing is completed, triggering a rendering method of the corresponding position through nodes of the virtual DOM tree bound by the nodes of the virtual OFD file, so that display of a browser end is modified.
In this embodiment, the operation sequence number includes a self-increasing sequence number in which the same document generated by the server side is unique; when the browser sends, the value is null; and when the network transmission return value is received, assigning the operation sequence number generated by the server side.
In this embodiment, the stamp is a unique UUID generated based on the timestamp, and is used to identify the operation itself, and the document code is a unique code for determining the online OFD file stored at the server, and is generated by the server file management system.
In the embodiment, online editing is performed on the OFD document by adopting typescript language, and the OFD document is packaged into Javascript language and is deployed at a server side node. Js and a browser side.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for real-time collaborative online editing of an OFD document is characterized by comprising the following steps of: the method comprises the following steps:
S 1 firstly, storing all local and received atomization operations at a browser end by using a front-end storage technology, modifying and rendering the OFD documents according to atomization operation instructions by using a local OFD editor program at the browser end;
S 2 collaborative editing, wherein multiple users open the same OFD online document at multiple browser ends;
S 2.1 downloading, analyzing and displaying the OFD online document at the browser end; the method is realized by an OFD online editor;
S 2.2 editing OFD documents by each browser end, generating and locally storing atomization operation data, and transmitting the atomization operation data to a server end in a network transmission mode;
S 2.3 when the browser end edits, storing the atomized data by using a front-end storage mode including an IndexdDB or a localstorage mode locally, and simultaneously creating a queue, and sequentially sending a strip to the server end; clearing from the queue if the transmission is successful, and reserving in the queue if the transmission is not successful, and continuously polling for transmission;
S 2.4 the server side receives the atomization operation data sent by the browser side in a network transmission mode, stores the atomization operation data in a database in sequence and broadcasts the atomization operation data to each browser side in sequence;
S 2.5 server(s)When the terminal is in network transmission, each time an atomization operation data is received, only one global self-increment variable of the same document is generated, and the global self-increment variable is assigned to the corresponding operation data; the operation data are stored in a database of a server end, the operation data are broadcasted, and when the operation data are received, the browser end which sends the operation data changes the corresponding operation serial number into the corresponding value of the self-increment variable and stores the corresponding operation serial number into the browser end;
the browser transmits the atomization operation data through a network, receives the atomization operation data broadcast by the server, modifies the OFD virtual file according to the atomization operation data by the editor, and re-renders the DOM of the browser according to the OFD virtual file by the editor;
when the browser end operation is finished, the server end modifies the stored OFD file of the server according to the atomization operation data recorded by the database and stores the OFD file;
S 3 editing is realized through an OT algorithm; firstly, an atomization operation data structure is provided, wherein the atomization operation data structure comprises an operation sequence number, a seal, a document code, an operation type, an operation node path, a starting position, an ending position, an operation value and a user account number;
when the browser receives the atomization operation data sent by the server, the OFD online editor is called according to the collaborative editing method, the object of the virtual OFD file is confirmed to be operated through the operation node, the object of the selected virtual OFD file is edited according to the operation type, the operation value and the starting and ending positions, then the node of the bound virtual DOM tree is determined, the corresponding rendering method is called, and the virtual OFD file is rendered to the browser.
2. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein: in step S 1 In the method, a front-end storage technology including an IndexdDB database, a localtorage or a self-built js object is used at the browser end, the browser end and the server are independent from each other in editing operation, and only atomization operation data needs to be interacted between the browser end and the server.
3. According to claim 1The method for real-time collaborative online editing of the OFD document is characterized by comprising the following steps of: in step S 2.5 Storing in the browser side includes storing in an IndexedDB, localtorage or js object.
4. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein the operation sequence number includes a self-increasing sequence number unique to the same document generated by the server side; when the browser sends, the value is null; and when the network transmission return value is received, assigning the operation sequence number generated by the server side.
5. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein the stamp is a unique UUID generated based on a time stamp for identifying the operation itself, the document code is a unique code for determining an online OFD file stored at the server side, and the document code is generated by a server side file management system.
6. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein in step S 3 The operation types include insertion, deletion of nodes and insertion and editing of texts.
7. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein in step S 3 In (a): the operation path comprises a path of an operation node corresponding to the virtual OFD file, the virtual OFD file is in a tree structure, and the corresponding operation node can be found through the operation node path along the branch of the tree structure.
8. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein in step S 3 Wherein the starting position is the starting position of the selected node or text; the ending position is the ending position of the selected node or text; wherein the operation value includes information of the newly added document when the newly added document is includedThe method comprises the steps of carrying out a first treatment on the surface of the When a page is newly added, the page information is the information of the newly added page; when the control is newly added, the control information is newly added; when the attribute is operated, the value is newly added and inserted; the user account is used for identifying the name of the operated user; whether the operation of the local browser is performed is judged by the user name.
9. The method for real-time collaborative online editing of an OFD document according to claim 1, wherein online editing of the OFD document adopts typescript language, and is packaged into Javascript language, and the method is deployed at a server side node.
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