JP2002117055A - Structured document managing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structured document managing method which efficiently manages a structured document and makes it possible to obtain a structured document on which a fast update function and an update result are reflected. SOLUTION: The structured document management system 101 comprises a memory which stores programs 104, 106, 110, 112, 114 and 116 operating according to instructions from an input/output device 102 and data, and files, and a structured document 103 to be registered is registered in a structured document DB 105 by the document registration program 104, an attribute information extraction and registration processing program 106 extracts property information from the structured document 103 according to extraction element definitions 107 and registers it in an attribute information DB 108, and the property information update program 110 updates property information in the property information DB 108 according to property information update specification 109. Then the structured document readout program 112 and property information readout processing program 114 read structured document contents 113 and property information 115 out according to the specification 111 of the readout document and the updated structured document generation processing program 116 generates a structured document 117 having been updated by using the structured document contents 113 and property information 115.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a document management method for managing a structured document in a document management system, and in particular, when managing a structured document, extracts the contents of a specific element of the structured document, and Provided is a method for maintaining consistency between the content of a structured document and an update result of extracted content in a system for managing in association.

[0002]

2. Description of the Related Art With the spread of word processors and the like, computerized document information is being digitized. These digitized documents have individual formats depending on the device or software to be created, and cannot be used with another device or software, or it is necessary to prepare some conversion means. Various structured documents have been proposed as a common format for such document exchange. These structured documents can not only define a hierarchical structure such as chapters, sections, and sections, which are the basic structure of the document, but also include layout information. XML (eXtensible Markup Language) is one of the languages that are being standardized as a description language for structured documents.
ge). XML embeds structural information of a structured document in a specific character string called a tag in text,
It uses a method to represent the structure of the document. In XML,
The name and content of the tag and the document structure indicated by the tag can be defined by DTD (Document Type Definition) = “document type definition”. XML is W3
Standardization is being promoted by C (World Wide Web Consortium), and a recommended version of Version 1.0 was released in February 1998. Although XML was originally standardized as a description language for structured documents, it has a high degree of freedom in description.
Because of the text, the data is compatible, and the content is readable, so that it is being applied to formats for data exchange on the Internet in various industries. The XML used as these data exchange formats is positioned not as a document but as data meaningful by a tag. Therefore, in such XML, even if data exchange on the Internet is performed by XML, in many cases, when managed, data identified by a tag is decomposed and stored in a database or the like.

[0003] Further, as XML-related standards, a DTD and a description rule for use in a specific application are defined, and are used for various applications. One of these standards is XSLT (XSL (= eXtensible Stylesheet Language) T
ransformations). This standard is also W3C since 1999 11
Version 1.0 is recommended in January. XSLT is XM
This is XML for describing a definition for converting a document described in L into a structured document having another structure. XSL
There is an XSLT engine that has a function of generating a converted XML by describing a conversion definition in T and providing a conversion source XML document. As a standard for designating elements in a structured document, XPath (XML Path Language)
Exists. XPath was also standardized by W3C in November 1999. In XPath, it is the top-level structure
The <title> element under the <document> element is "/ document / title"
It is described as follows. XPath is used in XSLT to specify an element to be converted of a structured document.

When XML is used as a format for data exchange, the contents of the XML are extracted and managed as data as described above. However, when these data are exchanged through the Internet, it is necessary to generate XML based on the update result of the extracted data. As a conventional technology (hereinafter referred to as a conventional technology 1) for realizing such a function, the contents of all elements are extracted from a structured document, managed together with the definition of an extraction method, and the extracted data and extraction rules are used as a basis. There is a technique for generating a structured document that reflects an update result of extracted data by reconstructing a structured document. White paper on this technology is available at http://www.infoteria.com/jp/contents/product/xml
It is described in -sc / WPiCon.pdf. According to the prior art 1, data described in XML is stored in a database, and XML described in XML is stored in the database.
Can be generated. This makes it possible to generate a structured document reflecting the updated contents by storing the contents of all XML elements in the database.

[0005] As another prior art (hereinafter, referred to as prior art 2), a structured document is analyzed, and the structured document is stored as structural analysis data while retaining structure hierarchical information. There is a technology that makes it possible to refer to and update any element of the. In the prior art 2, by holding the analysis result of the structured document, it is possible to refer to and update the content of an arbitrary element. Therefore, instead of extracting and holding the data to be updated, the data is held as structural analysis data and the analysis data is updated. According to the related art, a structured document that reflects an update result can be generated when an update is to be performed, so that the structured document can be updated. Http://www-4.ibm.com/s
oftware / data / db2 / extenders / xmlext / docs / v71wrk / dxxa
It is shown in wmst.pdf.

The contents of these prior arts will be described with reference to FIGS. 20 and 21. FIG. 20 is a diagram for explaining the contents of the prior art 1. In this prior art, the XML to be registered is
(2001) is decomposed and stored in a database column (2002) or the like, and conversely, XML (2)
001) can be reconstructed. As shown in the figure, the XML (2001) to be registered is converted into an intermediate XML (2004) corresponding to the storage format of the database by an XML conversion process (2003). In order to realize this function, the XML DTD (200
5) executing conversion information generation processing (2007) for associating database column information (2006) with
The conversion information (2008) is generated. XML conversion processing (2
In 003), an intermediate format XML (2004) is generated based on the generated conversion information (2008). Since the information corresponding to the columns of the database is described in the XML (2004) of the intermediate format, the content of the analysis is analyzed, and the DB input / output processing (2009) executes
It can be stored in a column (2002) of the database. Conversely, when generating XML (2001) from data stored in the database column (2002) or the like, first, in the DB input / output processing (2009), an intermediate format with a tag corresponding to the column name is added. XM
L (2004). The XML (2
004), an XML document is generated in the XML conversion process (2003) by using the conversion information (2008). According to the related art 1, a structured document (200
All information of 1) is stored in database columns (20
02), and the stored information is updated by operating the database. And, based on the updated information,
By generating a structured document, it is possible to generate a structured document reflecting the updated contents.

FIG. 21 is a diagram for explaining the contents of the prior art 2. As shown in the figure, an XML document (21
01) in the XML registration process (2102),
Generate and hold structural analysis data (2103). The structure analysis data (2103) expresses the document structure in a tree structure, and a specific element of the tree structure can be designated to refer to or update the content. Further, a structured document can be restored from the structural analysis data (2103) by an XML acquisition process (2104). Therefore, by updating the structural analysis data,
XM after update that reflects the update result for structural analysis data
L (2105) can be generated.

[0008]

As described in the prior art, when an arbitrary portion of a structured document is updated,
It is possible to obtain a structured document reflecting the update result. However, the method described in the prior art 1 has a problem that unless all contents of the structured document are extracted and managed, a structured document reflecting the update result cannot be generated. In addition, the update processing for the structural analysis data according to the related art 2 requires processing such as acquisition of a specified structure and generation of structural analysis data reflecting the update result.
There is a problem that a long processing time is required for the update processing.
Also, in any of the above technologies, when the structured document to be registered is managed as the original document as a document management function, the contents acquired as structural analysis data or extracted data and the contents of the structured document Since all the original documents must be stored, there is a problem that the data capacity for management becomes large. In a structured document management system in which only a part of a structured document to be registered is extracted and managed as attribute information, and the structured document itself is managed as it is as the original document, any conventional technology is applied. However, the above problem remains. The problem to be solved by the present invention is to solve these problems, a structured document that efficiently manages a structured document, and enables a high-speed update function and the acquisition of a structured document reflecting the update result. It is to provide a management method.

[0009]

According to the present invention, there is provided a document management system having a function of managing, registering, and referring to an electronic document. Manages the definition of attribute information extracted from structured documents and structured documents, and the method of extracting attribute information. Furthermore, the extracted attribute information can be updated independently of the structured documents. Then, a structured document in which the update result of the location where the attribute is extracted from the original structured document is rewritten to a structured document is obtained. More specifically, a structured document content extracting step of extracting the content of the specified element from the structured document based on the extracted element specifying information for specifying the element to be extracted from the structured document to be registered; A structured document management step of registering and managing the registered content and the structured document to be registered,
An extracted content updating step of updating the extracted content based on the update information; and an updated structure for generating a structured document reflecting the extracted content updated in the extracted content updating step based on the registered structured document It has a structured document generation step. In the structured document management step of registering and managing the extracted content and the structured document to be registered in association with each other, the step of managing the extracted content as attribute information of the structured document or the same in the database There is a step of storing the data in different columns of the record, or storing the data in a record of a different table on the database and storing the value in a column holding a value serving as a key connecting the records. In the updated structured document generating step, based on the extracted element designation information used in the structured document content extracting step, the element specified in the structured document content extracting step and the content of the element are extracted. The storage location is specified, and based on the information specifying the storage location, the content extracted from the structured document used for registration is replaced with the updated information of the content. A structured document reflecting the result is generated. In the above-mentioned specified element content updating step, the specified element of the structured document is specified based on the extracted element specifying information used in the structured document content extracting step and the content updated in the extracted content updating step. In the structured document conversion step of generating structured document conversion definition information for converting the content of the extracted content into the content updated in the extracted content update step, and converting the structured document based on the structured document conversion definition information, The contents of the structured document used for registration are converted. Also,
The above-described updated structured document generation step includes an updated structured document registration step of registering the structured document generated in this step in the document registration system, and associates the updated structured document with the updated attribute information. It can be attached and managed. Further, in the structured document management step, the extracted content update information for identifying whether or not the content extracted in the structured document content extracting step has been updated since the registration of the structured document is held, and the extracted content In the update step, information indicating that the extracted content has been updated is set in the extracted content update information corresponding to the updated content, and in the above-described updated structured document generation step, the extracted content update information is referred to. In addition, a structured document reflecting the update result of the extracted content is generated with only the extracted content updated as an update target. In the above-mentioned updated structured document registering step, a step of setting information indicating that the extracted structured document is not updated is included in the extracted content update information, so that the updated structured document is further updated. It is possible to realize a structured document update process for only the contents.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the processing contents of a first embodiment utilizing the present invention. The present embodiment is a document management system that registers, manages, and refers to a structured document. When a structured document is registered, a part of the content of the structured document is extracted and managed as attribute information. When acquiring a structured document, a structured document reflecting the extracted attribute information can be acquired. Structured document management system (101)
Is a general-purpose computer including a CPU, a memory, an external storage device, a system bus, and a portable medium network device. Using the input / output device (102), operation instructions and information are displayed for the structured document management system (101). The structured document management system includes a program operating on the system using a CPU,
It comprises a memory for storing processing data and programs, and a file system for managing registered documents.

The structured document management system includes a document registration processing program (104) for registering a structured document (103) to be registered in the system, and a structured document database (structured document) for storing the registered structured documents. Document DB)
(105) and an attribute information extraction / registration processing program for extracting and registering the contents described in the structured document as attribute information of the structured document when registering the structured document (103) to be registered ( 106), an extraction element definition (107) which is definition information for operating the attribute information extraction / registration processing program (106), and an attribute information database (attribute information) for storing the extracted attribute information in association with the structured document DB) (108) and an attribute information update program (1) that operates based on the specified attribute information update designation (109).
10) a structured document reading processing program (112) for reading a structured document from the structured document DB (105) based on the specification of the read document (111) and outputting the structured document contents (113) on a memory; From the attribute information DB (108) based on the specification (109) of the read document,
Attribute information read processing program (114) for reading attribute information and outputting attribute information (115) on the memory
And the structured document contents (113), attribute information (115), and extracted element definition (107) acquired on the memory,
The update result of the attribute information (115) is stored in the structured document content (11).
An updated structured document generation processing program (116) for generating a structured document reflected in 3) and outputting it as an updated structured document (117).

FIG. 2 shows a flowchart of the document registration process (104) and the attribute information extraction / registration process (106). In step 201, a structured document to be registered is read.
In step 202, the read structured document is stored in the structured document DB. In step 203, step 20
The attribute information is acquired from the structured document read in step 1, and stored in the attribute information DB in association with the structured document DB. In step 204, it is checked whether or not a structured document to be registered remains, and if so, the processing from step 201 to step 203 is repeated for the next document.
When there are no more structured documents to be registered, the registration process ends.

In FIG. 3, in step 203, information as attribute information is obtained from the content of the structured document, and the attribute information D
4 shows the processing contents for registering in B. First, a structured document structure analysis process (30) is performed on the structured document (103).
Perform 1). This processing can be realized by using an existing XML parser. As a result of the structural analysis, structural analysis data (302) expressing the hierarchical relationship of the elements constituting the structured document is generated. The structural analysis data is represented by a structural tree having the highest element of the element as a root, the lower element of each element as a branch, and the terminal element as a leaf. The content to be extracted as the attribute information can be obtained by tracing the elements of the structural analysis data (302) according to the extraction element definition (107). The extraction element definition is described in the following format. Extraction attribute name = attribute data type = "extraction target element specification" To obtain attribute information as a character string, set st as the attribute data type.
Describe as ring, and when acquiring as an integer value, describe as int in the attribute data type. When int is specified, the acquired character string is converted into an integer value and stored in the attribute information DB. If the attribute information is data in an array format, if each element of the array is a character string, describe it as string_array in the attribute data type, and if each element is a numerical value, describe it as int_array.
In this case, a plurality of contents obtained by designating the element to be extracted are sequentially stored in each element of the array. There is a method in which the data type of the attribute information is separately managed as the attribute data type information so that the attribute data type is not described in the extracted element definition. In this case, the attribute data type is not described in the extracted element definition, and the attribute data type information is searched by the extracted attribute name, and the attribute data type information is obtained. Can be realized.

In the description of the extraction element definition, the element to be extracted is specified using the XPath description method. Therefore, by analyzing the description of the XPath "/ document / title / text ()" and tracing the elements of the structural analysis data (302), the element (302-a) of the topmost element "document" is obtained.
Character string in the element (302-b) called "Title" under
(CDATA) (302-c) can be obtained. The acquired contents are stored in the attribute information DB (10
8). Also, the X "/ document / author / text ()"
By analyzing the description of the Path and tracing the elements of the structural analysis data (302), the element “document”, which is the top-level element,
The character string (CDATA) (302-e) in the element (302-d) called "author" under (302-a) can be acquired. The acquired content is stored in the attribute information DB (108) as the value of the first element of the attribute information "author" in the array format. If there are a plurality of authors, they are stored in the attribute information DB (108) as one element of the attribute information "author" in the order of appearance.

FIG. 4 shows that in step 203 of FIG.
9 is a flowchart illustrating a detailed processing procedure for acquiring contents serving as attribute information from a structured document and storing the contents as attribute values. In step 401, the structure of the structured document to be registered is analyzed to generate structure analysis data (302). In step 402, the extracted element definition information (107)
, One extracted element definition is taken out, and the description content is analyzed. In step 403, the structured document analysis data is traced from the topmost element "document" to the specified element in order based on "extraction element specification" in the extraction element definition analyzed in step 402. In step 404, the structured document structure analysis data (302) holds
The character string within the element reached in the processing of step 403 is acquired. In step 405, the acquired contents are stored as the value of the attribute specified by the extraction attribute name of the extraction element definition. Since all the contents described in XML are treated as character strings, if the data type of the attribute information is an integer value, the character string is converted into a numerical value and then stored as an integer value. To convert a string to an integer, use C
Atoi () and the like are provided as language functions, and these can be used. In step 406, it is checked whether there is any unprocessed extraction element definition information (107). If there is, the processing from step 402 to step 405 is repeated according to the next extraction element definition.

FIG. 5 shows an example 1 of a management format of a structured document and attribute information. In this example, the acquired attribute information is stored in the property storage area (502) of the structured document (501) file. When managing the structured document and the attribute information in the format shown in FIG. 5, the attribute information extracted from the content of the structured document is managed as the property of the structured document file. , Attribute information can be obtained. Further, attribute information can be updated by updating the property of the structured document file.

FIG. 6 shows a second example of the management format of the structured document and the attribute information. In this example, the structured document is stored in a structured document management table (60
It is stored in the structured document content column (602) of 1). The attribute information extracted from the structured document is stored in the attribute storage columns (603, 604) of the same table (601). By storing the structured document and the attribute information in the same record, the structured document and the attribute information are managed in association with each other. The document identifier (605) is used to specify the structured document or the attribute information when acquiring and updating the structured document and the attribute information. Since the structured document and its attribute information stored in the format shown in FIG. 6 are stored in the same record on the table, it is possible to acquire the structured document and the table at the same time. Further, the attribute information can be updated by updating the column content specifying the document identifier.

FIG. 7 shows a third example of the management format of the structured document and the attribute information. In this example, the structured document is a structured document management table (7
01), the structured document content column of the record (702)
And stores a document identifier that uniquely identifies the structured document in the document identifier column (703) of the same record as the stored structured document. Also, the attribute information extracted from the structured document and the document identifier for uniquely identifying the structured document are stored in the same record column (705, 706, 7) in the attribute information management table (704) as the second table.
07). Here, the same value as the document identifier stored in the document identifier column (703) of the first table (701) is stored in the document identifier column (707). The structured document and its attribute information stored in the format shown in FIG. 7 can be obtained by performing a search on the first and second tables by designating a document identifier. Further, the attribute information can be updated by updating the column content specifying the document identifier.

FIG. 8 is a flowchart showing a procedure of the attribute information updating process (110). First, step 8
At 01, a document whose attribute information is to be updated is searched. Search is based on attribute information such as document identifier and title,
It is realized by full-text search for structured documents. In step 802, attribute information of the searched document is obtained. In step 803, updating of the attribute information is realized by storing the updated attribute information in the attribute information DB (108).

FIG. 9 is a diagram showing Example 1 of the generation of an updated structured document reflecting the update result of the extracted attribute information.
In this example, the content (901-a) acquired from the “title” element of the structured document (901) is stored in the attribute information “title”.
Is stored in The content of the attribute information “title” has been updated from “structured document outline” to “structured document outline” by the attribute information update process (902). By reflecting the update result on the original structured document, a structured document (903) reflecting the updated content of the attribute is generated.
The content enclosed by the title "tag" is "Summary of structured document"
(903-a).

FIG. 10 is a diagram showing Example 2 of the generation of a structured document reflecting the update result of the extracted attribute information. In this example, the content (1001-a) acquired from the "author" element of the structured document (1001) is stored in the first element "author [1]" of the attribute information "author". In the content of the attribute information "author", "Hitachi Jiro" is added as the second element "author [2]" of the attribute information "author" by the attribute information update process (1002). By reflecting the update result on the original structured document, the structured document (100
3) is generated. One "author" tag of the structured document is added, and "Jitaro Hitachi" is stored in the content surrounded by the added "author" tag (1003-a).

FIG. 11 shows an updated structured document generation process (11) for generating a structured document reflecting the update result of the attribute information.
FIG. 9 is a diagram showing a first example of the processing content of 6). First, the structured document (11) acquired from the structured document DB (105)
01) is subjected to a structured document structure analysis process (1102) to generate structure analysis data (1103). This processing can be realized by an XML parser. Next, attribute information (1104) corresponding to the structured document (1101) acquired from the structured document DB (105) is acquired from the attribute information DB (108). Acquired attribute information (110
4) and the extracted element definition information (1105), in the structured document update processing (1106), the structural analysis data (110)
For 3), a process of updating the content of the specified element is performed. First, for the structured document analysis data (1103), an element extracted as attribute information is acquired based on the information of the extracted element definition (1105). In the specification of the element to be extracted in the extraction element definition, since "title = string =" / document / title / text () "" is described, attribute information "
The “title” is a “document” element (1103-
From a), it can be seen that the character string (CDATA) (1103-c) was obtained by tracing the "title" element (1103-b). The content of the attribute information “title” is “outline of structured document”, and the structural analysis data is updated by replacing the content of the structural analysis data with this attribute information.

The other attribute information "author" is attribute information in an array format, and as a result of updating the attribute information, one element is added. To specify the extraction target element in the extraction element definition,
Since "title = string =" / document / author / text () "" is described, the attribute information "author" is obtained from the "document" element (1103-a) as the top-level element. Element (110
It can be seen that the character string (CDATA) (1103-e) was obtained by following 3-d). The attribute information "author" has a character string (CDATA) (1103-
In order to not only update the content of e) but also to store the added attribute information "author [2]", the element (1103-f)
Need to be added. By storing "Jiro Hitachi" which is the content of the attribute information "Author [2]" in the added "Author" element, it is possible to generate the structural analysis data after the attribute update. The structural analysis data (11
03), an updated structured document (1108) is generated by a structured document generation process (1107). If the attribute information is an integer value, the following procedure is the same by acquiring the attribute information and converting it to a character string.

FIG. 12 shows a structured document reading process (1).
12) is a flowchart showing the procedure of the processing contents described with reference to FIG. 11 in the attribute information reading processing (114) and the updated structured document generation processing (116). In step 1201, a structured document to be acquired is searched. If the acquisition method is a document identifier, the document is acquired by searching for the document identifier. Step 1202
Then, the contents of the structured document retrieved in step 1201 are acquired. In step 1203, step 1201
To obtain the attribute information of the structured document searched by. In step 1204, a structural analysis process is performed on the structured document acquired in step 1202 to generate structural analysis data. In step 1205, the element for which the attribute information has been acquired is specified from the extracted element definition information. Step 12
In step 06, the content is updated by replacing the content of the element specified in step 1205 with the update of the attribute information. In step 1207, it is determined whether or not the content has been updated for all the attribute information. If there is attribute information that has not been updated, step 1205
To repeat the processing of step 1206. If the content has been updated for all the attribute information, step 1
At 208, a structured document is generated from the updated structural analysis data.

FIG. 13 shows an updated structured document generation process (11) for generating a structured document reflecting the update result of the attribute information.
FIG. 13 is a diagram illustrating a second example of the processing content of 6). First, the structured document (13) acquired from the structured document DB (105)
01). Next, attribute information (1302) corresponding to the structured document (1301) acquired from the structured document DB (105) is acquired from the attribute information DB (108). Based on the acquired attribute information (1302) and the extracted element definition information (1303), a structured document conversion definition generation process (130)
In 4), a structured document conversion definition (1305) is generated. The content (1306) of the structured document conversion definition describes a definition that replaces the content that can be extracted from the extraction element definition (1303) with attribute information (1302). By inputting the structured document conversion definition (1306) and the structured document (1301) to the structured document conversion process (1307), the contents specified by the extraction element definition (1303) are converted into the contents of the attribute information 1302). An updated updated structured document (1308) is generated. By using XSLT for the structured document conversion definition (1306) and using the XSLT engine for the structured document conversion process (1307),
Conversion processing can be realized.

FIG. 14 shows a reading process of structured document (1).
14 is a flowchart showing the procedure of the processing contents described with reference to FIG. 13 in the attribute information readout processing (114) and the updated structured document generation processing (116). In step 1401, a structured document to be acquired is searched. If the acquisition method is a document identifier, the document is acquired by searching for the document identifier. Step 1402
Then, the content of the structured document hit in the search in step 1401 is acquired. In step 1403, step 1
The attribute information of the structured document hit by the search at 401 is acquired. In step 1404, a structured document conversion definition for converting the content of the element for which the attribute information has been obtained into the updated attribute information is generated from the extracted element definition information and the updated attribute information. In step 1405, step 1404
Step 14 according to the structured document conversion definition generated in
02 is converted into an updated structured document updated to the contents of the updated attribute information.

Next, a second embodiment utilizing the present invention will be described. In the second embodiment, when managing the attribute information extracted from the structured document, only the updated attribute information is retained by holding an attribute information update flag for determining whether the attribute information is updated. It can be used to update structured documents. In addition, at the time of acquiring a structured document, the structured document managed by the structured document DB is replaced with the updated structured document, so that the managed attribute information and the contents of the structured document are matched. FIG. 15 is a processing block diagram of the second embodiment. The difference from the block diagram of the first embodiment (FIG. 1) is that the updated structured document (117) is stored in the structured document DB (105).
Structured Document Update Processing Program (1501)
Is added. There are no other changes.

FIG. 16 shows, in the second embodiment, the structured document and attribute information management format example 3 shown in FIG. It is Example 4 of the management method of attribute information. In this example, the structured document is stored as data in the structured document content column (1602) of the record in the structured document management table (1601), which is the first table of the database, and is the same as the stored structured document. Document identifier column of record (16
03) stores a document identifier for uniquely specifying a structured document. The attribute information extracted from the structured document and the document identifier for uniquely identifying the structured document are stored in the same record column (1605, 1606, 1607) in the attribute information management table (1604), which is the second table. I do. Here, the same value as the document identifier stored in the document identifier column (1603) of the first table (1601) is stored in the document identifier column (1607). Furthermore, the update flag (160) of the attribute information "title"
8) and the update flag (1609) of the attribute information "author". The structured document and its attribute information stored in the format shown in FIG. 16 can be obtained by performing a search on the first and second tables by designating a document identifier. Further, the attribute information can be updated by updating the column content specifying the document identifier. The attribute update flag is similarly held in both the structured document and attribute information management method example 1 shown in FIG. 5 and the structured document and attribute information management method example 2 shown in FIG. You can make it.

FIG. 17 shows a document registration process (104) and an attribute information extraction / registration process (106) in the second embodiment.
The flowchart of FIG. In step 1701, the structured document (103) to be registered is read. Step 17
In 02, the read structured document (103) is stored in the structured document DB (105). In step 1703,
Attribute information is acquired from the structured document (103) read in step 1701, and stored in the attribute information DB (108) in association with the structured document DB (105). Step 1
In step 704, the update flag of the attribute information is initialized and set to an unupdated state. In step 1705, it is checked whether or not a structured document to be registered remains.
Steps 1701 through 17 for the next document
The processing up to 04 is repeated. When there are no more structured documents to be registered, the registration process ends.

FIG. 18 is a flowchart showing the procedure of the attribute information updating process (110) in the second embodiment. First, in step 1801, a document whose attribute information is to be updated is searched. The search is realized by attribute information such as a document identifier and a title, as well as a full-text search for a structured document. In step 1802, attribute information of the searched document is obtained. In step 1803, the updated attribute information is realized by storing the updated attribute information in the attribute information DB (108). Step 1
In step 804, the content of the update flag of the updated attribute information is set to an updated state.

FIG. 19 shows a structured document reading process (112), attribute information reading process (114), and an updated structured document generating process (11) in the second embodiment.
6), in the structured document update processing (1501), FIG.
3 is a flowchart showing the procedure of the processing content described using FIG. In the second embodiment, when an updated structured document is generated, only the updated attribute value is updated. In step 1901, a structured document to be acquired is searched. If the acquisition method is a document identifier, the document is acquired by searching for the document identifier. In step 1902, the contents of the structured document hit in the search in step 1901 are acquired. In step 1903, the attribute information of the structured document hit in the search in step 1901 and the update flag of the attribute information are acquired. In step 1904, step 19
The update flag acquired in step 03 is checked, and if there is no updated attribute information, the process proceeds to step 1905.
In step 1905, the contents of the structured document acquired in step 1902 are output as they are. If there is updated attribute information, the process proceeds to step 1906. In step 1906, a structured document conversion definition for converting the content of the element for which the attribute information has been acquired into the content of the updated attribute information is generated from the extracted element definition information and the updated attribute information. The structured document conversion definition generated here describes only the conversion definition for the element whose attribute information update flag acquired in step 1903 has been updated. In step 1907, the structured document conversion definition generated in step 1906 is used to execute step 190.
The structured document acquired in step 2 is converted into an updated structured document updated to the contents of the updated attribute information. Step 1908
Then, the content of the structured document is updated by overwriting the updated structured document with the source structured document in the structured document DB (105). In step 1909, the update flag of the attribute information of the structured document that has been updated and registered is set to “not updated”.
By the above processing, if there is no updated attribute information, the original structured document is output as it is, and if there is, a structured document conversion definition for converting only the updated attribute information is generated,
Using this structured document conversion definition, it is possible to generate a structured document reflecting the update result of the attribute information extracted from the structured document.

[0032]

According to the present invention, in a structured document management system, processing for updating information extracted as attribute information from the content of a structured document is realized at high speed, management information is reduced, and the structured document is deleted. At the time of acquisition, it is possible to generate a structured document reflecting the update result of the content extracted as attribute information.

[Brief description of the drawings]

FIG. 1 is a block diagram showing processing contents of a first embodiment.

FIG. 2 is a flowchart illustrating a document registration and attribute information extraction / registration process according to the first embodiment.

FIG. 3 is a diagram showing contents of extraction and registration processing of attribute information.

FIG. 4 is a diagram showing a flowchart of structured document attribute extraction / registration processing.

FIG. 5 is a diagram illustrating a first example of a management format of a structured document and attribute information.

FIG. 6 is a diagram illustrating an example 2 of a management format of a structured document and attribute information.

FIG. 7 is a diagram illustrating an example 3 of a management format of a structured document and attribute information.

FIG. 8 is a diagram illustrating a flowchart of attribute information update processing according to the first embodiment.

FIG. 9 is an example of updating attribute information and reflecting it in a structured document 1
FIG.

FIG. 10 is a diagram showing a second example of updating attribute information and reflecting it in a structured document.

FIG. 11 is a diagram showing the contents of an updated structured document generation process 1 reflecting an update result of attribute information.

FIG. 12 is a diagram illustrating a flowchart of an updated structured document generation process 1 reflecting an update result of attribute information.

FIG. 13 is a diagram illustrating the content of an updated structured document generation process 2 reflecting the update result of the attribute information.

FIG. 14 is a diagram illustrating a flowchart of an updated structured document generation process 2 reflecting an update result of attribute information.

FIG. 15 is a block diagram illustrating processing contents of a second embodiment.

FIG. 16 shows a fourth example of a management format of a structured document and attribute information.
FIG.

FIG. 17 is a diagram illustrating a flowchart of document registration and attribute information extraction / registration processing according to the second embodiment.

FIG. 18 is a diagram illustrating a flowchart of attribute information update processing according to the second embodiment.

FIG. 19 is a diagram illustrating a flowchart of an updated structured document generation process according to the second embodiment.

FIG. 20 is a diagram illustrating a method of generating a structured document reflecting attribute information according to the related art 1.

FIG. 21 is a diagram illustrating a method of generating a structured document reflecting attribute information according to the conventional technique 2.

[Explanation of symbols]

 Reference Signs List 101 structured document management system 102 input / output device 103 structured document to be registered 104 document registration processing program 105 structured document DB 106 attribute information extraction / registration processing program 107 extracted element definition 108 attribute information DB 109 attribute information update designation 110 attribute Information update processing program 111 Read document designation 112 Structured document read processing program 113 Structured document contents 114 Attribute information read processing program 115 Attribute information 116 Updated structured document generation processing program 117 Updated structured document 1501 Structured document update processing program

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Masayoshi Matsumoto 890 Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Hitachi Business Solution Business Division (72) Inventor Makoto Imachi 890 Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Co., Ltd. Hitachi Business Solution Division (72) Inventor Toru Takahashi 890 Kashimada, Saiwai-ku, Kawasaki City, Kanagawa Prefecture F-term, Hitachi Business Solution Division 5B009 NA05 SA00 5B075 NR02 NR20 5B082 AA11 EA01

Claims (7)

[Claims] 1. A structured document management method in a document management system having a function of managing, registering, and referencing an electronic document, wherein extraction element designation information for designating an element to be extracted from a structured document to be registered is provided. A structured document content extracting step of extracting the content of a specified element from the structured document based on the structured document; a structured document managing step of registering and managing the extracted content in association with the structured document to be registered; An extracted content update step of updating the extracted content based on the update information; and an updated structured document that generates a structured document reflecting the extracted content updated in the extracted content update step based on the registered structured document A structured document management method comprising a generation step. 2. The structured document management method according to claim 1, wherein in the structured document management step, the structured document to be registered is stored in a record of one table in a database, and the structured document content extracting step is performed. Storing the content extracted in step 2 in a record of a table different from the table storing the structured document, and storing key information for combining the two records in a column of each record. Structured document management method. 3. The structured document management method according to claim 1, wherein in the updated structured document generation step, the structured document content is determined based on extraction element designation information used in the structured document content extraction step. The element specified in the extraction step and the storage location of the content of the element are specified, and based on the information specifying the storage location, the content extracted from the structured document used for registration is used as the updated information of the content. A structured document management method, wherein a structured document reflecting an update result of extracted contents is generated by a specified element content updating step to be replaced. 4. The structured document management method according to claim 3, wherein in the specified element content updating step, the extraction element specification information used in the structured document content extraction step and the extracted element specification information are updated in the extracted content updating step. Based on the content, generate structured document conversion definition information for converting the content of the designated element of the structured document into the content updated in the extraction content update step, and generate a structure based on the structured document conversion definition information. A structured document management method comprising: converting a structured document used for registration in a structured document conversion step of converting a structured document. 5. The structured document management method according to claim 1, wherein in the structured document management step, whether or not the content extracted in the structured document content extraction step has been updated from the time of registration of the structured document. In the extraction content update step, information indicating that the extraction content has been updated is set in the extraction content update information corresponding to the updated content, and the updated structured document In the generating step, by referring to the extracted content update information, only the updated extracted content is to be updated, and a structured document reflecting the update result of the extracted content is generated. Management method. 6. A structured document management device that operates in a document management system having a function of managing, registering, and referring to an electronic document, wherein an extraction element specification that specifies an element to be extracted from the structured document to be registered A structured document content extracting means for extracting the content of a specified element from the structured document based on the information; and a structured document managing means for registering and managing the extracted content in association with the structured document to be registered. An extracted content updating unit that updates the extracted content based on update information; and an updated structuring unit that generates a structured document reflecting the content updated by the extracted content updating unit based on the registered structured document. A structured document management device comprising document generation means. 7. A structured document that operates in a document management system having a function of managing, registering, and referencing an electronic document, based on extracted element designation information for designating an element to be extracted from a structured document to be registered. A structured document content extraction procedure for extracting the content of a specified element from a structured document, a structured document management procedure for registering and managing the extracted content in association with a structured document to be registered, and updating the extracted content with update information Structured document having an extracted content update procedure for updating based on a registered structured document, and an updated structured document generation procedure for generating a structured document reflecting the content updated in the extracted content update procedure based on the registered structured document A computer-readable recording medium recording a management program.