JP2694849B2 - Management method of document list information in distributed processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] Regarding a document list information management method in which a host computer manages document list information created by a host computer based on a request from a workstation, the created list information is managed by the host side. By managing and holding the same list information in the host until a specific point in time according to the content of the process, the process of recreating the same list information is eliminated, and a large amount of list information can be read and created by dividing it on the workstation side. In the distributed processing system in which the workstation manages the document managed by the host computer, the workstation is configured to perform the search processing for further narrowing down based on the list information Set the document list information output request to call the document list information from the host computer, and The host computer interprets the contents of the list information output request of the document, and the list information creation process and the search process from the existing list information according to the request items interpreted by the request interpretation / control unit. , List information operation means for performing at least one of list information / search result return processing to workstation and list information discarding processing, and list information holding means for holding created list information .

[Industrial applications]

The present invention relates to a document management method in a filing system in which a host computer and a workstation are linked, and more specifically, the host computer manages document list information created by the host computer based on a request from the workstation. The management method of document list information.

[Conventional technology]

In recent years, the price / performance ratio of workstations has improved rapidly, and the number of operating workstations has also increased rapidly. Along with this,
The number of computerized documents has been increasing as workstations have become easier to create documents. As the number of digitized documents increases, the storage capacity and processing capacity of the workstations become insufficient to manage the documents in individual workstations. As a result, there is an increasing number of cases in which a host computer and a workstation are linked and documents are managed by the filing system of the host computer.

The filing system normally has a multi-layered structure in order to store documents and the like in accordance with the classification rules required by the user.

FIG. 7 is an explanatory diagram of a multi-tiered filing system. Hereinafter, a four-layer filing system will be described as an example.

Tier 0 is the root of this filing system, and A, B, C, ...
There is a layer 1 container called .... In each container of Tier 1, A ₁ , A ₂ , A ₃ , ..., B ₁ , B ₂ ,.
There is a Tier 2 container called C ₁ , C ₂ , C ₃ , ... And in each container of Tier 2 there is an actual document. That is, there are document a ₁₁ in the container of A ₁ and document b ₁₁ and document b _{12 in} the container of B ₁ .

Since the filing system adopts such a structure, when searching for a document, the search file set is narrowed down by tracing a multi-layered file in order from the upper layer to reach a target document. For example, when the target document is a ₂₂ , when a document retrieval command is issued from the workstation to the host computer, the host side first expands the root information of layer 0 and stores the container list information of layers 1 (A, B, C, ...) Is sent back to the workstation side. The container list information provides information as a means for reaching the document list information. When the container A is selected on the workstation side, the information on the container A is expanded on the host side, and the container list information (A ₁ , A ₂ , A ₃ , ...
・) Is returned to the workstation. When the container A ₂ is selected on the workstation side, the information on the container A ₂ is expanded on the host side, and the document list information (a ₂₁ , a ₂₂ ,
a _23, ···) back to the workstation. The document list information provides information as a means for reaching a target document. This document list information makes it possible to select the document a ₂₂ and reach the target document.

As the number of documents increases, the search process for finding a desired document becomes important. In some cases, the target document cannot be narrowed down by one search result, and a search for narrowing down again based on the search result may be necessary. In some cases, the workstation cannot receive the search results because there are too many documents in the search results.

Conventionally, in a filing system in a distributed processing system, list information is created every time a search request is made from a workstation without managing the list information in a host computer.

FIG. 8 is an explanatory diagram of a conventional method in which the list information is not managed by the host computer.

FIG. 8 (a) is a flowchart of the processing performed by the host computer when the container list information or the document list information is taken out. First, the list information is created (S1), and then the created list information is returned to the workstation side (S1).
1). After sending the list information to the workstation,
The list information is discarded (S2), and the process ends.

[Problems to be solved by the invention]

However, such a processing method has the following problems.

FIG. 8B is an operation explanatory diagram of a series of document processes.

According to the document list information request from the workstation, the host side creates the document list information, and the created list information is returned to the workstation. After returning the list information, the host side discards the list information. The workstation side performs document processing on the selected document, the host side performs processing such as updating or deleting the document according to the document processing performed on the workstation side, and notifies the workstation of the processing result. Now, suppose that, following this, the process of recalling the same document is performed again on the workstation side. The workstation requests the host for document list information. On the contrary,
On the host side, the previously created document list information has already been discarded, so it is necessary to perform the document list information creation process again.

Further, there is a problem when one search cannot be performed sufficiently. That is, the host side searches according to the search conditions set on the workstation side,
After returning the list of search results to the workstation,
Discard the list information. If the set search conditions are insufficient and the list information amount of search results is too large, it is desirable to add search conditions based on the search results and perform a search again. However, since the previous search results have been discarded, it is necessary to search from the beginning.

In addition, a problem occurs when the amount of data of the list information is too large and the workstation cannot receive all the data. On the workstation side, if the amount of data that can be received is exceeded, the excess data will be discarded. Therefore, if the host side discards the list information after returning the list information, it becomes impossible for the workstation to receive all the list information.

These problems are caused by the fact that the host creates the list information, returns the created list information to the workstation, and immediately discards the list information.

Instead of immediately discarding the list information, by holding the list information in the memory of the host until a specific point according to the content of the process, the list information can be recreated or the search process can be performed. Obviously, unnecessary processing such as cleaning can be omitted.

The present invention manages the created list information on the host side and holds it in the host until a specific point in time according to the content of the process, thereby eliminating the process of recreating the same list information many times, and thus a large amount of list information. Is divided by a workstation and read, or it is possible to perform a search process for further narrowing down based on the created list information.

[Means for solving the problem]

FIG. 1 is a block diagram of the present invention. The present invention is premised on the case where the filing system document on the host computer 1 is called and processed by the workstation 2.

The workstation 2 requests the document list information output request 3 in order to request the host computer 1 to perform a list information creation process for documents stored in the filing system of the host computer 1 and a conditional document search process.
Is sent to the host computer 1. The workstation 2 also outputs the information returned to the workstation by the list information operating means 5.

The request interpretation / control means 4 interprets the processing request content of the document list information output request 3 input from the workstation 2 and controls the procedure of the processing executed by the list information operation means 5.

The list information manipulating means 5 is a process of creating the list information based on the control of the request interpreting / controlling means 4, a process of searching the list information under the condition specified by the workstation 2, and a result of the creating or searching. Processing for returning the list information to the workstation 2, and processing for discarding the list information held by the list information holding means 6 described later.

The list information holding unit 6 stores the list information created by the list information creating process and the search process of the list information operating unit 5,
It is held in the memory of the host computer 1.

[Action]

In a distributed processing system in which a workstation is connected to the host computer 1, it is assumed that the document managed by the filing system on the host computer 1 is taken into the work area of the workstation and processed by the workstation. And

The user of the workstation first sends a document list information output request 3 to the host computer 1 by the workstation 2, and requests the host computer 1 to create the document list information and return it to the workstation 2.

The request interpretation / control means 4 in the host computer 1 interprets the request content of the document list information output request 3 input from the workstation 2 and controls the list information operation means 5 according to the content. In the case of the request to create the list information, the list information operation means 5 creates the list information and returns the result to the workstation 2. The created list information is stored in the host computer 1 by the list information holding means 6.
Hold within.

When the request interpreting / controlling means 4 requests the document list information output from the workstation 2 to output the already created list information again, the list information manipulating means 5 causes the list information holding means 6 to list the list information. The information is taken out and returned to the workstation 2. When the request is a request to search the already created list information under a certain condition, the list information operating means 5 retrieves the list information from the list information holding means 6 and the search requested by the workstation 2 Search processing is performed under the conditions and the result is returned to the workstation 2. And the list information operation means 5 is
The previous list information is discarded, and the list information newly created by the search is held in the host computer 1 by the list information holding unit 6.

The request interpreting / controlling means 4 controls the list information operating means 5 so that the list information held by the list information holding means 5 becomes one in each layer of the multi-layer filing system, and the host computer 1 The list information is discarded when the session between the workstation and the workstation 2 ends.

〔Example〕

Embodiments will be described below with reference to FIGS. 2 to 6.

 FIG. 2 is a system configuration diagram of an embodiment of the present invention.

In the present embodiment, first, as an overall configuration, a host computer 7, a workstation 8 connected to it for performing a distributed processing function, and a magnetic disk device 9 connected to the host computer 7 for storing filing data such as documents. And a host computer 7 and a magnetic disk device 9
Constitutes the filing system. The host computer 7 comprises an input / output control unit 10, an execution control unit 11, and a file management unit 12.

The execution control unit 11 is a complex of hardware such as a central control unit / main storage device and software such as an operating system for operating them, and executes jobs written in a job control language (JCL). Run.

The input / output control unit 10 is an interface for delivering various command requests input from the workstation 8 to the execution control unit 11 or outputting a processing result or message by the execution control unit 11 to the workstation 8.

The file management unit 12 is an interface between the magnetic disk device 9 and the execution control unit 11 or the input / output control unit 10,
It manages various data such as documents stored in the magnetic disk device 9.

 The operation of the embodiment having the above configuration will be described below.

The workstation 8 reads the document in the filing system formed on the host computer 7, processes it, and stores it again in the filing system on the host computer 7.

At this time, the workstation 8 first requests the host computer 7 to output the document list information in order to retrieve the desired document. This request is input to the input / output control unit 10 of the host computer 7 and sent to the execution control unit 11. The execution control unit 11 includes a file management unit 12 and a magnetic disk device 9
The document information is extracted from the document list, document list information is created, and the result is returned to the workstation 8 via the input / output control unit 10.

 FIG. 3 is an explanatory diagram of the operation of the embodiment of the present invention.

First, when the workstation 8 sends a new document list request to the host computer 7, the host computer 7 performs a document list creation process and returns the created document list to the workstation 8. The created document list is the host computer 7
Keep it inside. The workstation 8 selects a specific document from the document list information and performs document processing. The same document processing as that performed by the workstation 8 is also performed by the host computer 7, and the workstation 8 is notified of the document processing result of the host computer 7.

With the above, one document processing in the distributed processing system is completed, but at this time, the workstation 8 again issues a document processing request to the host computer 7. The workstation 8 sends to the host computer 7 a document list request for continuously requesting the same document list as the previous one. The host computer 7 returns to the workstation 8 the document list created previously and held in the host computer 7. The workstation 8 can select a document from the document list and continue the document processing.

As a result, in the present invention, since the document list created once is held until the session between the workstation and the host computer ends, the same document list as described in the section [Prior Art] is repeatedly stored. It is possible to omit the wasteful processing to make.

An embodiment of the present invention will be described below with reference to the operation flowchart with reference to the drawings.

FIG. 4 is an operation flowchart of the embodiment of the present invention. FIG. 7A is an explanatory diagram of the overall processing flow in the workstation and the host computer, and FIG.
Is an operation flowchart of processing on the workstation side, and FIG. 7C is an operation flowchart of processing of the host computer.

The exchange of processing between the workstation and the host computer will be described with reference to FIG.

When the information of the host computer is called from the workstation side, first, in order to establish a session between the workstation and the host computer, the workstation side executes the host opening process W1. As a result, the workstation issues a session opening request to the host computer, and the host computer performs the session opening process H1 in response to the opening request. This establishes a session between the workstation and the host computer, enabling the exchange of processing between the two.

When the workstation sends a processing request W2 to the host computer, the host computer accepts the request and then distributes the processing within the host computer (process acceptance / process acceptance /
Sorting H2), and subsequently, each sorted processing is performed (processing H3). The processing result is sent from the host computer to the workstation, and the processing result is displayed on the workstation side (result display W3). With the above, one processing requested by the workstation to the host computer is completed. This operation (process request W2 process acceptance / sorting H2 process H3 result display W3) is repeated until a session closing request is issued.

When closing the session, the workstation performs the host closing process W4 and issues a closing request to the host computer. The host computer performs the session closing process H4, and the session between the workstation and the host computer is closed by this.

The operation when the workstation requests the host computer for document processing will be described with reference to FIG.

First, in order to call a document, the host computer is requested to create a document list (document list request (new) WSTP1) and waits for a response from the host computer. When there is a response from the host computer, the returned information is displayed (return information display WSTP2). At this time, depending on the processing capacity of the workstation, only a part of the results processed by the host computer may be returned, so information such as the total number of items of list information, the number of returned items, and the number of displayed items are also displayed.

Next, when all the list information cannot be displayed, the return information that cannot be displayed is displayed by scrolling the display screen. Then, it is determined whether there is a screen scroll request (WSTP3). If there is a scroll request (YES), a request to continuously return the list information is sent to the host computer (WSTP4), waits for a response from the host computer, and returns to the process of displaying return information WSTP2.

If there is no screen scroll request (NO), it is determined whether there is a narrowing search request for further narrowing down the documents to be extracted from the list information returned from the host computer (WSTP5). If there is a narrowing search request (YES),
Request to set search conditions and return the search result list information to the host computer (WSTP6)
Is output and waits for a response from the host computer. If there is a response from the host computer, the process returns to the return information display process WSTP2. If there is no narrowing-down search request (NO), the process of extracting the list information from the host computer ends.

Next, the processing of the host computer in response to the list retrieval request from the workstation will be described with reference to FIG.

When a list retrieval request is input from the workstation, the host computer first determines whether it is a new request to create new list information (HSTP
1). If it is a new request (YES), create list information and return it to the workstation (HSTP2).
Next, the list information previously created and stored in the host computer is searched for the list information of the same hierarchy as the list information created by HSTP2 (HSTP3). If it does not exist (NO), that is, if the list information of a certain layer in the multi-layered filing system is created for the first time, the process ends without doing anything. If a list of the same layer already exists (YES), the existing list of the same layer is discarded (HSTP4), and the process ends.

List retrieval request input from the workstation
If HSTP1 is not a new request (NO), the list information should already be held in the host computer, so it is judged whether the list information of the requested tier is already held in the host computer. (HSTP5). If it does not exist (NO), it is considered that there is an error in the list fetch request from the workstation, so error processing (HSTP6) is performed and processing ends.

If a list in the same layer exists (YES), it is determined whether the list request for this workstation is the continuous list fetch request (WSTP4) or conditional continuous list fetch request (WSTP6) in Fig. 4 (b) (HSTP7). ). If no condition is specified (NO), a continuous list fetch request that continuously outputs the previously created list (WSTP4 in Fig. 4 (b))
It is determined that the list information of the same layer held in the host computer is continuously returned (HSTP8), and the processing is ended.

If a condition is specified, it is judged as a conditional continuous list fetch request (WSTP6) (YES), and the list information of the same tier held in the host computer is searched based on the specified condition and the list is narrowed down. Create the information and return it to the workstation (HSTP9). Then, the list information of the same layer that was previously held in the host computer is discarded (HSTP4), and the processing is ended.

As described above, the host computer creates the list information in response to the list creation request from the workstation, and expands and holds the list in the temporary work area of the host computer. The retained list information is discarded at three timings: a request to newly create a list in the same layer, a request to narrow down the list information in the same layer, and a session end. . The list information can be accessed any number of times until it is discarded, so that the list information can be continuously retrieved, or the list that has been retrieved can be further searched and a list that has been narrowed down can be retrieved.

FIG. 5 is an explanatory diagram when the continuation list is taken out.

Suppose that the workstation requests the host computer to create a document list with the number of returned documents set to 10.
The host computer creates a document list, the first 10 of which
Information such as the total number of documents, the number of created document lists, and the number of returned documents is returned along with the items. When a screen scroll request is issued on the workstation side, a continuous list retrieval request for retrieving 11 to 10 items is input from the workstation to the host computer. In response to this request, the host computer returns to the workstation the list information for the 10 cases from the 11th case, the top number of the returned list and the number of responses. By repeating the above process, the list information held in the host computer can be continuously taken out to the workstation side.

FIG. 6 is a memory block diagram of list information held in the temporary work area of the host computer.

First of all, the multi-layered filing as shown in FIG.
There is a hierarchy definition 13 for each hierarchy in the system. The hierarchy definition 13 is composed of a unique name of the hierarchy located higher than the hierarchy to be defined (tier unique name 14 of the container) and a list object name (list object name 15) for the hierarchy to be defined. The list information 16 is created by expanding the list object. The list information 16 has a page number 17 in which list management information exists and an offset 18 within the page. The management information of each document is expanded in the work area of each page, and the page number 17 and the page offset 18 of the list information 16 are displayed.
It is possible to take out by. The list information 16 is created when the list object 15 is expanded, and is held in the temporary work area of the host computer until it is discarded thereafter, so that the access efficiency at the time of continuous list fetching is improved.

〔The invention's effect〕

According to the present invention, the list information is managed by the host computer,
Since it is held in the host computer until it is discarded at a specific time, in the case of a workstation that cannot collectively receive document management information, the list information can be divided and taken out. Further, when performing a narrowed search, it is possible to continue the narrowed search based on the list information created previously without adding the condition set in the previous search.

[Brief description of the drawings]

FIG. 1 is a block diagram of the present invention, FIG. 2 is a system configuration diagram of an embodiment, FIG. 3 is an operation explanatory diagram of the embodiment, and FIGS. 4 (a) to 4 (c) are operations of the embodiment. FIG. 5 is a flow chart, FIG. 5 is an explanatory diagram when a continuous list is taken out, FIG. 6 is a memory configuration diagram of one embodiment, FIG. 7 is an explanatory diagram of a multi-tiered filing system, and FIG. 8 (a), ( b) is an operation explanatory diagram when the list information is not managed by the host. 1 ... Host computer, 2 ... Workstation, 3 ... Document list information output request, 4 ... Request interpretation / control means, 5 ... List information operation means, 6 ... List information holding means.

Claims (1)

(57) [Claims] 1. A distributed processing system for processing a document managed by a host computer (1) at a workstation (2), wherein the workstation (2) retrieves document list information from the host computer (1). In order to set the document list information output request (3), the host computer interprets the contents of the document list information output request, the request interpretation / control means (4), and the request interpretation / control means (4). ), The list information creation process, the search process from the existing list information, and the list information to the workstation. A search result return process, an update process for updating the existing list information based on the list information newly created by the search process from the existing list information, and a session between the workstation and the host computer are performed. A distributed processing system comprising: a list information operating means (5) for executing a disposal process of list information at the time of ending; and a list information holding means (6) for holding created list information.