JPH07262061A - Comparison device based on data definition information - Google Patents

Abstract

PURPOSE:To perform the comparison of various user files (data) with a single comparison device by carrying out various types of comparison corresponding to various types of data just by changing the data definition information. CONSTITUTION:The information that defines the comparisn items as well as the types of data to be compared is previously stored in a data definition information file DI as the data definition information. Then, the data stored in the files F1 and F2 to be compared with each other and the data definition information corresponding to these data are evolved into a memory, so that the comparison subject file evolution information MF1 and MF2 are obtained. The comparison items are extracted out of the data to be compared with each other and developed in the memory by a comparison item analyzing device base on the data definition information evolved in the memory. Then, the extracted comparison items are compared with each other by a comparison device for each data type of each comparison item.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data comparison device in a computer system, and more particularly to a comparison device for comparing various types of data with one type of comparison device.

[0002]

2. Description of the Related Art In the conventional comparison method, there are UNIX commands such as bdiff, diff, and cmp.
f and diff are comparisons in which the data type compares text data, and cmp is a comparison in which the data type compares binary data. As described above, when the data types are different, it is usual that a plurality of comparison devices exist accordingly.
Therefore, the user has to understand how to use the plurality of comparison devices, and the software developer has to develop the plurality of comparison devices.

[0003]

In the conventional method, there is a problem in that the comparison device is properly used for each data type, or the comparison method and comparison items must be specified in detail to the comparison device with a number of operands. .

An object of the present invention is to eliminate the dependency of the data type to be compared, that is, to use one type of comparison device and to absorb the variation of the data comparison method by defining it as data definition information. One of the comparison devices can be easily used as a comparison device corresponding to various data types.

[0005]

[Means for Solving the Problem] The above object is to compare data in a certain comparison target file by providing means for defining the type of comparison target data and the contents and positions of comparison items as data definition information. This is achieved by inputting the comparison target data based on the data definition information corresponding to the data type of the comparison target data, analyzing it, extracting it as an abstract comparison item group, and comparing this with a comparison device. .

[0006]

[Operation] Information defining the data type and comparison item of the comparison target data is stored in the file as data definition information in advance. Next, the data in the comparison target file and the data definition information corresponding to the data are expanded in the memory using the file input device. Based on the data definition information expanded in the memory, the comparison target data expanded in the memory is used to extract comparison items in record units using a comparison item analysis device. The above object can be achieved by comparing the values of the extracted comparison items for each data type of each comparison item using a comparison device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a system showing an embodiment of the present invention.

In FIG. 1, F1 and F2 are comparison target files that store data to be compared.

D1 is a data definition information file in which definition information regarding the data stored in the comparison target files F1 and F2 is stored. The definition information includes information such as data type and data position regarding data to be compared.

MF1 and MF2 are comparison target file expansion information which is read by the file input device from the comparison target files F1 and F2 and expanded in the memory. MD1 reads the data definition information file D1 by the file input device, and starts the key, the data length, the key attribute, the key value,
It is data definition information file expansion information in which the respective data definition information such as data length, data attribute, delimiter attribute, delimiter value, etc. is expanded in the memory.

MAF1 and MAF2 are comparison object file analysis result information which is analyzed by the analysis device using the data definition information file expansion information MD1 to analyze the comparison object file expansion information MF1 and MF2.

C1 is a comparison target file analysis result information MA
It is the comparison result which output the result compared with the comparison device based on F1 and MAF2.

FIG. 2 shows the data definition information in the data definition information file D1.

Reference numeral 21 shows a data definition information basic form for defining data.

Here, "key start position" indicates "position from offset head".

"Key length" indicates "key length".

The "key attribute" indicates a "key data type" such as a key being text data. In this example, if "t" is specified, it is regarded as text data, and "b"
If is specified, it is regarded as binary data.

The "key value" specifies "key data that is continuous from the head data of the key" within the range indicated by the "key length". The comparison target data having this “key value” and the other comparison target data having the same key value are compared.

"Data length" indicates "length of data to be compared". In this example, when "*" is specified, the end of "data to be compared" is indicated by a delimiter. In this example, it is assumed that the “data to be compared” exists continuously with the key.

"Data attribute" is "attribute of data to be compared"
, And the code indicating "data attribute" is the "key attribute" described above.
Is the same as the case of.

The "delimiter attribute" indicates the "delimiter attribute" indicating the end of the above-mentioned "data to be compared", and the code indicating the "delimiter attribute" is the same as the above-mentioned "key attribute".

The "delimiter value" is the above-mentioned "data to be compared".
"Delimiter value" indicating the end of the.

Reference numerals 22 and 23 are data definition information defining the data types in the comparison target files F1 and F2 based on the data definition information basic form 21.

In this example, it is shown that there are two types of data to be compared, the data type A and the data type B, in each of the comparison target files F1 and F2.

The data definition information 22 is data definition information relating to the data of the data type A, and the data definition information 23
Is data definition information regarding the data of the data type B.

FIG. 4 shows the contents of the data in the comparison target files F1 and F2 and the result of comparing the above-mentioned data according to the flowchart of FIG. 3 which will be described later.

2 and 4, the data type A , data
Although the character of the data type B is described, this is for convenience to make it easy to distinguish the data definition information 22 to 23 and the data 11 to 14 and 21 to 24, and in the application of the invention, this information is not used. Does not need.

FIG. 5 is a comparison target file expansion information MF in which the data of the comparison target files F1 and F2 is read according to the flowchart of FIG.
1 and MF2.

Comparison target file expansion information MF1, MF2
Is managed using the record management table RT.

The file 1 pointer 51 points to the first record management table RT11 in the record management table RT1n of the comparison target file expansion information MF1, and the file 2 pointer 52 corresponds to the comparison target file expansion information MF.
2 is a pointer that points to the first record management table RT21 in the second record management table RT2m.
Further, in the record management table RT, the next record management pointer 53 is a pointer pointing to the next record management table RT, the previous record management pointer 54 is a pointer pointing to the previous record management table RT, and the key value pointer 55 is a key storage area. The pointer 57 pointing to the key 57 and the data pointer 56 are composed of a pointer pointing to the data 58 which is the comparison target data storage area, the key 57 and the data 58.

Although not shown, the key 57 stores a “key length” and a “key attribute” in addition to the “key”.
Further, the data 58 stores "data length" and "data attribute" in addition to "data". When comparing the key and the comparison target data, the information not shown is referred to and compared.

Next, one embodiment of the present invention will be described in detail with reference to the flowchart of FIG.

First, the data definition information 22 and 23 in the data definition information file D1 is read into the memory (step 31).

Next, the data in the comparison target file F1 is read into the memory (step 32). Which of the data definition information 22 and 23 the read data corresponds to is determined according to the “key start position”, “key attribute”, and “key value” specified in the data definition information 22 and 23.

The determination of which of the data definition information 22 and 23 the read data corresponds to is performed as follows.

When the read data is the data shown in the data 41 of FIG. 4 and the definition of the data definition information 22 and 23 is as follows.

Data read: MSGA001 message 1 \ n Data definition information 22: "key start position" = 0, "key attribute"
= T (text data), “key value” = “MSGA” data definition information 23: “key start position” = 12, “key attribute” = t (text data), “key value” = “MSGB” In this case, From "position 0 from the beginning of the offset (" key start position "= 0)" defined by the data definition information 22, "key data type is text data (" key attribute "= t)"
Since “MSGA (=“ key value ”)” that exists in the data 41 is present in the data 41, it matches the above item in the data definition information 22, while the “key start position” specified in the data definition information 23. Data of "1 \ n" exists from "= 12", and matches with "MSGB (=" key value ") which is text data (" key attribute ") specified by the data definition information 23. do not do.

Therefore, it is determined that the data 41 corresponds to the data definition information 22.

The read data is analyzed based on the data definition information thus determined, and the analyzed data is registered as the comparison target file development information MF1. The registration is performed by securing the record management table RT1n shown in FIG. 5 and setting the data corresponding to each item in the items 53 to 58 of the secured record management table RT1n (step 33).

Steps 32 to 33 are repeated for all the data in the comparison target file F1.

The same applies to all the data in the comparison target file F2 (steps 32 to 33).

Next, the comparison target file expansion information MF1,
Data to be compared in each record of MF2 is compared using the record management table RT.

First, a key value matching the key 57 "MSGA001" of the record management table RT11 is searched from the key 57 of the record management tables RT21-24.

In this case, the record management table RT24
The key 57 “MSGA001” of is searched and the contents of the respective data 58 are compared.
Since the "message 1" and the data 58 "message 3" of the RT 24 are not the same, information indicating that they do not match is output as a comparison result (steps 34 to 35).

Similarly, the RT12 key 57 "MSGB0
"01" matches the RT57 key 57 "MSGB001", and the RT12 data 58 "error message 1" and RT
The data 58 of 23 corresponds to “error message 1”. Therefore, information that these data match is output as the comparison result.

Also, the RT 57 key 57 "MSGA00
2 ”matches RT57 key 57“ MSGA002 ”,
The data 58 “message 2” of RT13 and the data 58 “message 2” of RT23 match. Therefore, information that these data match is output as the comparison result.

In addition, the RT57 key 57 "MSGB00
2 ”corresponds to the RT57 key 57“ MSGB002 ”, so RT14 data 58“ error message 2 ”and R
The T58 data 58 "error message 3" is compared, but they do not match. Therefore, information that these data do not match is output as a comparison result.

The output of the above comparison result is shown in the comparison result of FIG.

In this way, the comparison result for all the data to be compared in the comparison target file expansion information MF1 and MF2 is output, and the process is terminated (step 36).

As described above, by using the data definition information shown in FIG. 2, it is not necessary to have a process in the program depending on the data type to be compared, and the data in the file can be analyzed by the data definition information. This makes comparison easier.

In this embodiment, the comparison target file F
Although data of different data attributes coexist in the data in 1 and F2, the data attributes of the comparison target data are the same, but the present invention further includes the following data attributes. You can also compare different data.

For example, in comparing the values of hexadecimal format numeric data and pack format numeric data, the data definition information basic form 22 is expanded to let the definition information specify the definition data, and the comparison data is set in the program. It is also possible to make a comparison after unifying attributes such as converting one data format to the other data format.

[0053]

According to the present invention, since it is only necessary to provide the data definition information defining the type of the file to be compared,
Various comparison devices are unnecessary depending on the type of the comparison target file. For this reason, the software developer does not have to create various comparison devices, and does not need double development. In addition, the user does not need to understand how to use various comparison devices, and only needs to understand how to use one comparison device. The time required for data comparison work such as confirmation can be saved.

[Brief description of drawings]

FIG. 1 is a system schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing data definition information.

FIG. 3 is a flowchart of a comparison method of the present invention.

FIG. 4 is a diagram showing the content of data in a file to be compared and the result of data comparison.

FIG. 5 is a diagram showing a specific example of comparison target file expansion information MF1 and MF2.

[Explanation of symbols]

 F1 to F2 ... Comparison target file, D1 ... Data definition information file, MF1 to MF2 ... Comparison target file expansion information, MD1 ... Data definition information file expansion information, MAF1 to MAF2 ... Comparison target file analysis result information, C1 ... Comparison result, RT ... Record management table, 21 ... Data definition information basic form, 22, 23 ... Data definition information, 51 ... File 1 pointer, 52 ... File 2 pointer, 53 ... Next record management pointer, 54 ... Previous record management pointer, 55 ... Key Value pointer, 56 ... Data pointer, 57 ... Key, 58 ... Data 58.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rishin Onishi 6-81 Onoue-cho, Naka-ku, Yokohama-shi, Kanagawa Hitachi Software Engineering Co., Ltd. In-house

Claims (1)

[Claims] 1. A comparison device for comparing data, wherein the comparison target data is analyzed based on data definition information defining the type of comparison target data and the comparison item, and compared with the comparison item based on the analysis result. A comparison device based on data definition information, comprising: an analysis device that extracts related items; and a comparison device that compares comparison items based on the extracted comparison related items.