KR100494078B1 - Electronic document request/supply method based on XML - Google Patents

Abstract

Extensible notation language-based electronic document request method according to the present invention, when creating an electronic document using a grammar defining the structure of the structured electronic document, without a special grammar definition for the request on the existing defined grammar By creating a request document in which only items / characteristics are described, a request is made to provide an electronic document having information on items / characteristics described in the request document, and an electronic document having information on the requested items / characteristics is provided. In addition, the provider side of the electronic document is notified of the deleted or no longer valid content to enable the progressive update of the electronic document on the receiving side.

According to the present invention, the request document may further include identifier information for the electronic document having the information of the item / characteristic to be provided. In addition, the identifier information may include identifier information for uniquely distinguishing a specific electronic document from among electronic documents having information of items / characteristics to be provided, and may limit the condition of the electronic document required by the requestor. Contains condition information.

In addition, according to the present invention, the item / characteristic described in the request document is optionally described among required / optional items and / or required / optional characteristics by a grammar defining the structure of the structured electronic document. In addition, according to the present invention, the provided document may include deletion / invalidation information.

Description

Electronic document request / supply method based on XML}

The present invention relates to a method for requesting / providing an electronic document, and more particularly, to an electronic document based on an extensible notation language capable of searching for an electronic document based on an extensible markup language (XML) using a predetermined grammar. A document request / provision method.

Recently, an example of writing an electronic document using Extensible Markup Language (XML) is increasing. The utilization rate of XML is increasing rapidly in the world, and the introduction of XML is increasing not only in general enterprises but also in government, government offices and public institutions. These electronic documents are usually written based on the grammar set by each institution.

As the number of electronic documents written in XML is increasing rapidly, there is an increasing number of electronic documents being managed by a client / server structure that maintains documents on a server and finds and provides desired electronic documents according to user requests. This client / server structure is as shown in FIG. 1 is a diagram schematically illustrating a client / server structure for requesting / providing an electronic document based on a general extensibility notation language.

At this time, the client represents the side requesting and using the document, and the server represents the document provider. Thus, if the system requesting and using the document has the ability to store and provide the document at the same time, the client may be the server at the same time, depending on the role.

There are languages such as XML Query Language (XQL) and XQuery to search these XML documents. However, these languages search for XML documents in the server's electronic document repository and request them as XML documents. It is often used to receive self-results.

Using XQL as an example, XQL is a means for locating and filtering data fields and texts in an XML document. XML files are used to transfer collections of data between computers on the Web. XQL provides tools for finding or selecting specific items in a collection of data within an XML file. It is based on the formal syntax used within the eXtensible Stylesheet Language (XSL) and has been proposed as an extension of XSL.

The XSL format language uses simple directory notation as a means of commenting to indicate specific items for processing. For example, "book / author" means "find all author elements in all book elements in a particular context, such as an XML file." XQL adds to this directory format notation the ability to use boolean logic, filter out elements, index collections of elements, and so on. With XQL, you can write programs to do things like browse the electronic document repository where XML files are stored, provide hyperlinks to specific elements, and so on.

However, the method of requesting the provision of an electronic document using such a search language requires that the electronic document requester learn a separate search language and designate the structure of the XML document to receive the searched results. The disadvantage is that it is not very effective for the requestor who requests and receives the electronic document.

In addition, in the case of using the document provided as requested and provided, there is no way to express the deleted content or the content that is no longer valid due to the change of the document content. The disadvantage is that.

The present invention provides an electronic document request / provision based on an extensibility notation language that enables a requester to efficiently receive an electronic document based on an extensible notation language using an existing predetermined grammar without having to learn a separate grammar for an electronic document request. The purpose is to provide a method.

In addition, the present invention, the electronic document application system used by the requester can request an electronic document search only with an algorithm that processes a predetermined grammar, and an electronic document based on an extensible notation language capable of processing an electronic document provided from an electronic document repository. The purpose is to provide a request / provision method.

In addition, the present invention, the contents of the documents already provided by the provider, the contents deleted or no longer valid through the update of the document is not transmitted to the entire document, but only the deleted or invalid content is transmitted by Another object of the present invention is to provide a method for updating an electronic document based on an extensible notation language that can increase transmission efficiency.

In order to achieve the above object, an electronic document request method based on an extensible notation language according to the present invention is provided.

In preparing an electronic document using a grammar that defines the structure of a structured electronic document, create a request document that lists only the element / attribute name of the existing defined grammar without defining a special grammar for request. Thereby, there is a feature in that an electronic document having information on the item / characteristic described in the request document is requested, and an electronic document having information on the requested item / characteristic is provided.

According to the present invention, the request document is characterized in that it may further include identifier information for the electronic document having the information of the item / characteristic to be provided.

In addition, according to the present invention, the identifier information includes identifier information for uniquely distinguishing a specific electronic document from among electronic documents having item / characteristic information to be provided, and the condition of the electronic document required by the requester. Its feature is that it includes condition information that can limit.

In addition, according to the present invention, the item / characteristic described in the request document is characterized in that it is selectively described among essential / optional items and / or essential / optional characteristics by a grammar defining the structure of a structured electronic document. have.

In addition, according to the present invention, the item / characteristic selectively described in the request document is characterized in that the item / characteristic of information to be provided in the electronic document to be provided by the requestor.

In addition, according to the present invention, when the value is described in the item / characteristic optionally described in the request document, the stated value of the item / characteristic is the value of the item / characteristic that the electronic document provided for the requestor is satisfied. It is characteristic that it is a condition.

In addition, in order to achieve the above object, an extension document language-based electronic document providing method according to the present invention includes an item included in a request document for a requested document using a grammar defining a structure of a structured electronic document. An extensibility notation based electronic document providing method for providing a document including values of / characteristics,

The grammar item / characteristics previously defined in the request document are optionally described among required / optional items and / or required / optional properties, and the identifier information for the electronic document in which the request document distinguishes the item / characteristic information. A document containing the value of the item / characteristics optionally used in the request document, valid for the defined structure grammar, and containing the request information while satisfying the value of the described item / characteristics. Its feature is that it provides a document that satisfies the identification value for.

According to the present invention, the identifier information is characterized in that it includes delimiter information for uniquely distinguishing a specific electronic document and condition information for limiting the condition of the electronic document required by the electronic document requester.

In addition, the present invention provides a method for providing an electronic document based on an extensible notation language according to the present invention to provide an electronic document using a grammar defining a structure of a structured electronic document. It is characterized by providing a provision document including an invalid item indicating that it is invalid for deletion of the included content, and including the content to be deleted in the invalid item, thereby indicating that the document has been deleted.

According to the present invention, the content to be deleted included as the content of the invalid item in the provided document is an identifier item for identifying a document, and when the identifier item is provided as the content of the invalid item, the corresponding document. Its feature is that it deletes everything.

In addition, according to the present invention, if the provided document includes an identifier for identifying the document, and the content of the invalid item includes only the content to be deleted of the document included in the invalid item Its feature is that only its contents are deleted.

In addition, in order to achieve the above object, the method of providing an electronic document based on the extensible notation language according to the present invention provides an electronic document using a grammar defining a structure of the structured electronic document. The feature is that a document is provided that includes an attribute indicating that it has been invalidated for deletion of the contents, thereby informing that the document has been deleted.

According to the present invention, an attribute indicating that invalidity in the provided document is an attribute of an identifier item for identifying a document to be deleted, and when provided as an attribute indicating that the attribute of the identifier item is invalidated, The characteristic is that the entire document, which can be identified by the document identifier, is deleted.

In addition, according to the present invention, if the provided document includes an identifier for identifying the document, and provided with an attribute indicating that the attribute of the item to be deleted of the document is invalid, the document identifier The characteristic is that only the corresponding item is deleted from the identifiable document.

According to the present invention, there is an advantage that the requester can be efficiently provided an electronic document based on the extensibility notation language using a predetermined grammar without learning a separate grammar for the document request.

In addition, according to the present invention, the electronic document application system used by the requester can request an electronic document search only with an algorithm for processing a predetermined grammar, and can process the electronic document provided from the electronic document repository.

In addition, according to the present invention, the provider can transmit only the content to be deleted separately, there is an advantage that the requester can easily update the content of the existing document.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The XML-based electronic document request method using the predetermined grammar to be proposed in the present invention is as follows.

Electronic documents written in XML language define the grammar using DTD (Document Type Definition) or XML Schema language. These grammars define the structure of the entire electronic document and limit each item's name, number of occurrences, order, mandatory / selection, and item attributes. Electronic documents are valid documents for grammar written in these languages.

The present invention proposes a method of constructing a request document for requesting desired information using a predetermined grammar, and requesting information provision from an electronic document repository using the configured request document. The requester intends to use the method of requesting the information providing to the electronic document repository by transmitting the desired information according to a predetermined grammar.

In the present invention, the configuration of the request document is made by simply expressing only the item / characteristic, without specific information about the item / characteristic to be provided among the item / characteristic (element name / attribute name) defined in the grammar. In addition, when there is information that can limit the information to be requested, identifiers or items / characteristics defined in the grammar can be described in the request document along with specific values.

 Therefore, when the requester sends a document to the electronic document repository for the purpose of providing the electronic document, the grammar such as a required item or a required attribute may not be observed among the limitations of the predetermined grammar. That is, since the document is requested to be provided to the electronic document repository by filling only the necessary item or attribute values, it may be omitted when there is no information value to be requested for the required item or attribute in a predetermined grammar.

Items / characteristics indicating information to be provided in this way and items to be provided using an electronic document describing an identification value for restriction of information or an item / characteristic having a specific value according to a hierarchical structure of a predetermined grammar as a request document It is intended to be provided with an electronic document that includes / characteristic values and satisfies the value of the item / characteristic used as an identification value or condition.

That is, according to the extensibility notation language-based electronic document request / provision method proposed in the present invention, an identification value of an electronic document to be requested and an item to be received are described using a document describing a hierarchical structure of a predetermined grammar. In other words, the request for the provision of an electronic document with the corresponding information.

In addition, according to the extensibility notation language-based electronic document request / provision method proposed in the present invention, if a part of the content of the already provided document is deleted or is no longer valid, only the content to be deleted by the provider side is further added. By adding an attribute value indicating that it is not valid anymore, it indicates that it is no longer valid, or creates an item indicating that it is no longer valid and includes only the content to be deleted.

The electronic document request / provision method may be applied to a system composed of a person requesting to provide an electronic document, a person providing a requested electronic document, and a network connecting them, and in some environments such as a broadcast program providing system. After providing only basic information, it may be applied to a system that receives additional information through a network according to a user's needs.

As an example of application, the grammar of an electronic document related to a broadcast program is defined as follows, and the case where the electronic document request / provision method according to the present invention is applied will be described with reference to FIG. 2. FIG. 2 is a diagram illustrating an example of a structural diagram displaying a grammar for a broadcast program by a general extensibility notation language-based electronic document creation method.

A broadcast program has a 'title' and unique 'identifier' information that points to the program, and includes broadcast-related information such as' broadcaster ',' broadcast time ',' broadcast period 'and' plot ',' critical ',' Suppose you have information about program content, such as 'casting'. Among these, 'case', 'identifier', 'broadcast time' and 'broadcast period' are defined as essential items. This grammatical representation is shown in FIG. Here, essential items are indicated by a solid line, and selection items are indicated by a dotted line.

This syntax is written in DTD and XML Schema as shown in FIGS. 3 and 4, respectively. FIG. 3 is a diagram illustrating an example of a grammar for a broadcast program by DTD by a general extensibility notation language-based electronic document creation method, and FIG. 4 is a diagram of a general extensibility notation language-based electronic document creation method. An example of the syntax is shown in XML Schema.

DTDs are rules that apply XML to markup a particular type of document, which depends on the application. Document type definitions include the element type (state) that can be expressed in markup, and the rules for element interrelationships, attributes, and references, and are represented by document type declarations.

The broadcast program document actually created according to the grammar is as shown in FIGS. 5 and 6. 5 and 6 are diagrams showing examples of broadcast program electronic documents created by a general extensibility notation language-based electronic document creation method. Here, all of the necessary titles are included, but optional items may or may not be included.

Suppose a requester asks a broadcaster for a particular program. In this case, the requestor may create a request document as shown in FIG. 7. FIG. 7 is a diagram illustrating an example of a request document for requesting to provide an electronic document prepared by an electronic document request method based on an extensible notation language according to the present invention.

At this time, the request document uses the grammar as shown in Figs. 5 and 6, but omits the title item which is an essential item, and the "identifier" item for the program to be requested and the information to be received as shown in Figs. Only the "Critic" item is filled out and the store is requested to provide the electronic document.

Accordingly, in response to the request of the user who created the request document as shown in FIG. 7, the electronic document storage, as shown in FIG. 8, uses the electronic document application in which the user uses the electronic document containing the requested information in compliance with a predetermined grammar. To the system. FIG. 8 is a diagram illustrating an example of an electronic document provided according to the request document shown in FIG. 7.

And suppose a requester asks a broadcasting station for programs in which a specific actor appears. In this case, the requestor may create a request document as shown in FIG. 9. In the request document shown in Fig. 9, the grammar as shown in Figs. 5 and 6 is used, but the title item, which is a required item, is omitted, and only the "casting" item for the program to be requested is provided to provide the electronic document to the repository. You will be asked. Information about "title" and "broadcast" that you want to receive is mandatory and is provided automatically even if you do not indicate it in the request document.

Accordingly, in response to the user's request as shown in FIG. 9, the electronic document store provides the electronic document including the requested information to the electronic document application system used by the user in compliance with a predetermined grammar as shown in FIG. 10.

As described above, the method for requesting / providing an electronic document based on the extensible notation language to be proposed in the present invention uses an grammar determined by the requestor for an electronic document that is already prepared and stored in the electronic document repository (for a search request). You can request to provide electronic documents without having to learn the grammar of a separate language. And, by using only a system for processing a predetermined grammar based on the existing extensibility notation language, it is possible to process the electronic document provided from the electronic document storage can be operated much more effectively.

At this time, the items / characteristics described in the request document are selectively described among essential / optional items and / or essential / optional characteristics by a grammar defining the structure of the structured electronic document. The item / characteristic optionally described in the request document indicates an item / characteristic of information to be provided in the electronic document to be provided by the requestor. In addition, when the value is described in the item / characteristic selectively described in the request document, the stated value of the item / characteristic indicates the condition of the item / characteristic that the electronic document provided for the requestor must satisfy. .

On the other hand, when there is content to be deleted due to the change of the document contents, for example, when the last broadcast of one day is canceled due to the broadcast situation and the broadcast of the day is finished, it is invalid as shown in Figs. 11 and 12. Alternatively, the addition of an item indicating deletion or the addition of an attribute may inform that the last broadcast is cancelled.

FIG. 11 is a diagram illustrating an example of providing information about a deleted document by providing a document including an item indicating that invalidity is provided by the method for providing an electronic document based on the extensibility notation language according to the present invention. FIG. FIG. 4 is a diagram illustrating an example of providing information on a deleted document by providing a document including an attribute indicating that invalidity is provided by the method for providing an electronic document based on the extensibility notation language according to the present invention.

More specifically, by adding the <invalid> item as shown in FIG. 11, it is possible to provide information that the scheduled 'late night talk' broadcast has been cancelled. In this case, the content to be deleted included as the content of the invalid item in the provided document may be an identifier item for identifying the document, and if the identifier item is provided as the content of the invalid item in the server, The entire stored document is deleted. When the provided document includes an identifier for identifying the document, and only the content to be deleted of the document is included as the content of the invalid item, only the corresponding content included in the invalid item is deleted. Done.

In addition, as shown in FIG. 12, by adding an attribute of <broadcast program identifier = "kana" "invalid =" true ">, it is possible to simply provide information indicating that the" late night talk "broadcast, which is the broadcast, has been cancelled. In this case, the attribute indicating that the invalidity in the provided document may be an attribute of an identifier item for identifying a document to be deleted, and when provided by the server as an attribute indicating that the attribute of the identifier item is invalidated The entire document stored in the client identified by the document identifier is deleted. If the provided document includes an identifier for identifying the document, and the attribute of the item to be deleted is provided as an attribute indicating that the document is invalid, the document can be identified as the document identifier. Only the item is deleted from the document.

As described above, according to the method for providing an electronic document based on the extensibility notation language according to the present invention, the contents of the document are changed and deleted, or the contents that are no longer valid are deleted without newly providing the whole document, or are no longer valid. Only content can be provided to enable incremental document updates.

According to the method for requesting / providing an electronic document based on the extensibility notation language according to the present invention as described above, the requestor provides an extensibility notation using an existing predetermined grammar without having to learn a grammar of a separate language for requesting an electronic document. Language-based electronic documents can be efficiently provided.

In addition, according to the extensibility notation language-based electronic document request / provision method according to the present invention, the electronic document application system used by the requester can request the electronic document search only with an algorithm that processes a predetermined grammar, and is provided from the electronic document repository. It has the advantage of processing electronic documents.

In addition, according to the method for requesting / providing an electronic document based on the extensibility notation language according to the present invention, if a part or all of the contents of a document already provided is deleted or no longer valid, the deleted document is easily notified. The advantage is that you can prevent the use of invalid documents or their contents.

1 is a schematic diagram of a client / server structure for requesting / providing an electronic document based on a general extensibility notation language.

2 is a diagram showing an example of a structure diagram displaying a grammar for a broadcast program by a general extensibility notation language-based electronic document creation method.

3 is a diagram illustrating an example of a grammar for a broadcast program in a DTD by a general extensibility notation language-based electronic document creation method.

4 is a diagram illustrating an example of a grammar for a broadcast program in XML Schema by a general extensibility notation language-based electronic document creation method.

5 and 6 are diagrams showing examples of broadcast program electronic documents created by a general extensibility notation language-based electronic document creation method.

7 is a view showing an example of a request document for requesting to provide an electronic document, which is created by an electronic document request method based on an extensible notation language according to the present invention.

8 illustrates an example of an electronic document provided according to the request document shown in FIG.

9 is a view showing another example of a request document for requesting to provide an electronic document, which is created by an electronic document request method based on an extensible notation language according to the present invention;

10 is a view showing another example of an electronic document provided according to the request document shown in FIG. 9;

11 is a view showing an example of providing information on a deleted document by providing a document including an item indicating that it is invalidated by the method for providing an electronic document based on the extensibility notation language according to the present invention.

12 is a diagram illustrating an example of providing information on a deleted document by providing a document including an attribute indicating that invalidity has been provided by the method for providing an electronic document based on the extensibility notation language according to the present invention.

Claims (40)

The method for updating, by the client, metadata about a broadcast program stored in the client and expressed in an extensible notation language may include: Requesting a server for an updated version of the metadata stored at the client; Deleting, from the client, metadata included in an invalid item provided from the server and identified by an identifier according to the request; How to update electronic document based on the extensible notation language, characterized in that it comprises a. The method of claim 1, And the metadata is received in advance and stored in the client. The method of claim 1, And the metadata, the identifier, and the invalid item are defined by a grammar defining a structure of the electronic document. The method of claim 3, wherein The grammar is an XML schema, and the broadcast program is a television broadcast program. The method of claim 1, And in the deleting of the metadata, identifying the metadata from the client by the identifier. The method of claim 1, And the metadata may be known as the invalid by an invalid property. The method of claim 6, And the invalid characteristic is defined by a grammar defining a structure of an electronic document. The method of claim 7, wherein And the grammar is an XML Schema (eXtensible Markup Language schema). Stores metadata about a broadcast program expressed in an extensible notation language, requests a server for an updated version of the stored metadata, and deletes metadata included in an invalid item provided by the server and identified by an identifier Client. The method of updating the metadata about the broadcast program stored in the client and expressed in the extensible notation language is as follows. Receiving an update version request of the metadata from the client; Providing the client with an invalid item containing the identifier of the metadata to delete the metadata from the client to inform the client that the metadata is invalid; Electronic document update request response method based on the extensible notation language, characterized in that it comprises a. The method of claim 10, And the metadata is provided in advance. The method of claim 10, And the metadata, the identifier and the invalid item are defined by a grammar defining the structure of the electronic document. The method of claim 12, The grammar is an eXtensible Markup Language schema (Extensible Markup Language schema), characterized in that the electronic document update request response method based on. The method of claim 10, And the metadata may be known as the invalid by an invalid property. The method of claim 14, And the invalid characteristic is defined by a grammar defining a structure of an electronic document. The method of claim 15, The grammar is an eXtensible Markup Language schema (Extensible Markup Language schema), characterized in that the electronic document update request response method based on. Receives a request for an updated version of metadata relating to a broadcast program stored in a client in a scalable notation language and deletes the metadata from the client so that an invalid item including the identifier of the metadata is sent to the client. Providing a server to announce that the metadata is invalid. A method in which the client makes an update request to a server to update metadata about a broadcast program stored in a client and expressed in an extensible notation language, and then the client processes a response from the server, Receiving an invalid item from the server that announces that the metadata fragment identified by the identifier identifying the metadata fragment containing the metadata is invalid; Identifying at the client a piece of metadata that is known to be invalid by the invalid item; Deleting the identified piece of metadata at the client; Method for processing an electronic document update request based on the extensible notation language, characterized in that it comprises a. The method of claim 18, And the metadata fragment is a unit of metadata that can be updated and updated independently from a server to a client. The method of claim 18, And the metadata fragment is received in advance and stored in the client. The method of claim 18, And the metadata, identifier and invalid item are defined by a grammar defining the structure of the electronic document. The method of claim 21, And the grammar is an XML Markup Language Schema, and the broadcast program is a television broadcast program. The method of claim 18, And the metadata fragment may be known as invalid due to an invalid property. The method of claim 23, wherein And the invalid characteristic is defined by a grammar defining a structure of an electronic document. The method of claim 24, And the grammar is an XML Schema (eXtensible Markup Language schema). The method in which the server responds to an update request from the client for updating the metadata about the broadcast program stored in the client and expressed in an extensible notation language, includes: Providing the client with an invalid item that announces that the metadata fragment identified by the identifier identifying the metadata fragment containing the metadata is invalid for deleting the metadata from the client. An electronic document update request response method based on an extensible notation language. The method of claim 26, And the metadata fragment is a unit of metadata that can be transmitted and updated independently from the server to the client. The method of claim 26, And the metadata fragment is received in advance and stored in the client. The method of claim 26, And the metadata, the identifier and the invalid item are defined by a grammar defining the structure of the electronic document. The method of claim 29, The grammar is an eXtensible Markup Language schema (Extensible Markup Language schema), characterized in that the electronic document update request response method based on. The method of claim 26, And the metadata fragment may announce the invalidity by invalidity characteristic. The method of claim 31, wherein And the invalid characteristic is defined by a grammar defining a structure of an electronic document. The method of claim 32, The grammar is an eXtensible Markup Language schema (Extensible Markup Language schema), characterized in that the electronic document update request response method based on. In response to the client's request to update metadata about the television program stored in the extensible notation language, the server responding to the invalid item notifying that the metadata stored by the client is invalid. The method of receiving and processing from Identifying, from the client, metadata included in the invalid item and identified by an identifier identifying the metadata; Deleting the identified metadata from the client; Method for processing an electronic document update request based on the extensible notation language, characterized in that it comprises a. The method of claim 34, And the metadata is received in advance and stored in the client. The method of claim 34, And the metadata, the identifier and the invalid item are defined by a grammar defining the structure of the electronic document. The method of claim 36, And the grammar is an XML Schema (eXtensible Markup Language schema). The method of claim 34, And the metadata may announce the invalid fragment according to an invalid characteristic. The method of claim 38, And the invalid characteristic is defined by a grammar defining a structure of an electronic document. The method of claim 39, And the grammar is an XML Schema (eXtensible Markup Language schema).