CN107885492B - Method and device for dynamically generating data structure in host - Google Patents

Method and device for dynamically generating data structure in host Download PDF

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CN107885492B
CN107885492B CN201711119110.XA CN201711119110A CN107885492B CN 107885492 B CN107885492 B CN 107885492B CN 201711119110 A CN201711119110 A CN 201711119110A CN 107885492 B CN107885492 B CN 107885492B
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彭丰华
尹杰
张大伟
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Bank of China Ltd
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Abstract

The invention discloses a method and a device for dynamically generating a data structure in a host, wherein the method comprises the following steps: downloading a data table to be processed into a data file, and obtaining a SYSPUNCH file corresponding to the data file, wherein the SYSPUNCH file describes a data structure of the data file; obtaining a first parameter, wherein the first parameter describes a target field and a processing mode of the target field; processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field; and processing the data file according to the second parameter. The invention can improve the efficiency of development and maintenance.

Description

Method and device for dynamically generating data structure in host
Technical Field
The invention relates to the technical field of databases, in particular to a method and a device for dynamically generating a data structure in a host.
Background
COPYBOOK is a host file that describes the structure of data, including the name, type and length of the data item. Typically used in COBOL programs. When a COBOL program is used for processing files in a host, COPYBOOK is often used for describing a data structure of a database table. The data structure file needs to be maintained at the development and maintenance stages by manpower.
A simple model for processing database data in batches can be divided into 2 steps:
1. the UNLOAD of the table to be processed is converted into a file format;
2. and performing file processing on the UNLOAD file.
In the development process, conventionally, a copy ok of an UNLOAD file is created, and the format is as follows:
01 ZZZZ-CADD.
Figure GDA0002888890970000011
the COBOOL program introduces the COPYBOOK, which is used to locate the field positions of the data table. Before the program can be executed, the program and COPYBOOK must be compiled as part of the program.
In addition to copy book of newly added data files in the development stage, when the structure of a database table is changed (field name, length, data type, and the like), developers must maintain copy book, and change a COBOL program and recompile the copy book.
Because the structure of the database table is changed frequently, the development and maintenance cost is very high, and problems are easy to occur after production due to analysis omission.
Disclosure of Invention
The embodiment of the invention provides a method for dynamically generating a data structure in a host, which is used for improving the efficiency of development and maintenance and comprises the following steps:
downloading a data table to be processed into a data file, and obtaining a SYSPUNCH file corresponding to the data file, wherein the SYSPUNCH file describes a data structure of the data file;
obtaining a first parameter, wherein the first parameter describes a target field and a processing mode of the target field;
processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field;
processing the data file according to the second parameter;
processing the first parameter into a second parameter using the sysplex file, including:
determining the position of a target field in the data file according to the SYSPUNCH file;
and obtaining the second parameter by adding the position of the target field in the data file to the first parameter.
The embodiment of the present invention further provides a device for dynamically generating a data structure in a host, so as to improve the efficiency of development and maintenance, where the device includes:
the system comprises a data downloading module, a data processing module and a data processing module, wherein the data downloading module is used for downloading a data table to be processed into a data file and acquiring a SYSPUNCH file corresponding to the data file, and the SYSPUNCH file describes a data structure of the data file;
the device comprises a parameter obtaining module, a processing module and a processing module, wherein the parameter obtaining module is used for obtaining a first parameter, and the first parameter describes a target field and a processing mode of the target field;
the parameter processing module is used for processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field;
the data processing module is used for processing the data file according to the second parameter;
the parameter processing module is further configured to:
determining the position of a target field in the data file according to the SYSPUNCH file;
and obtaining the second parameter by adding the position of the target field in the data file to the first parameter.
The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the processor implements the method for dynamically generating the data structure in the host.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program for executing the method for dynamically generating a data structure in a host is stored in the computer-readable storage medium.
In the embodiment of the invention, a data table to be processed is downloaded into a data file, and a SYSPUNCH file corresponding to the data file is obtained, wherein the SYSPUNCH file describes a data structure of the data file; obtaining a first parameter, wherein the first parameter describes a target field and a processing mode of the target field; processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field; therefore, the dynamic generation of the data structure in the host is realized, the development productivity can be improved, the COPYBOOK does not need to be maintained when the subsequent data table is changed, and the maintenance workload is reduced; the data file is processed according to the second parameter, so that reusability can be improved, different COBOL programs do not need to be written for processing each time different tables are processed, and development and maintenance efficiency is improved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a diagram illustrating a method for dynamically generating a data structure in a host according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an apparatus for dynamically generating a data structure in a host according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The inventors have found that many scenarios require the data table UNLOAD to be filed during batch processing. In the process, the system automatically generates a SYSPUNCH file for describing the data structure of the UNLOAD file. This file is often ignored. Based on this, in the embodiment of the present invention, a method for dynamically generating a data structure in a host is provided, where a sysplex file is used to process parameters related to an application into COPYBOOK of an UNLOAD file, and the COPYBOOK is used in a subsequent file processing program, so that manual generation and maintenance of COPYBOOK are avoided.
Fig. 1 is a schematic diagram of a method for dynamically generating a data structure in a host according to an embodiment of the present invention, as shown in fig. 1, the method may include:
step 101, downloading a data table to be processed into a data file, and obtaining a SYSPUNCH file corresponding to the data file, wherein the SYSPUNCH file describes a data structure of the data file;
102, obtaining a first parameter, wherein the first parameter describes a target field and a processing mode of the target field;
step 103, processing the first parameter into a second parameter by using the sysplex file, wherein the second parameter describes a target field, a position of the target field in the data file and a processing mode of the target field;
and 104, processing the data file according to the second parameter.
As can be seen from the flow shown in fig. 1, in the embodiment of the present invention, the sysplex file is used to process the first parameter into the second parameter, so as to implement dynamic generation of the data structure in the host, thereby improving the development productivity, and reducing the maintenance workload without maintaining copy book when the subsequent data table changes; the data files are processed according to the second parameters, so that the reusability can be improved, different COBOL programs do not need to be written for processing each time different tables are processed, and the development and maintenance efficiency is improved.
During specific implementation, the data table to be processed is downloaded into a data file, and a sysplex file corresponding to the data file is obtained, wherein the sysplex file describes a data structure of the data file.
A simple model for processing database data in batches can be divided into 2 steps:
1. the UNLOAD of the table to be processed is converted into a file format;
2. and performing file processing on the UNLOAD file.
During UNLOAD filing, the system automatically generates a sysplex file describing the data structure of the UNLOAD filing data table. An example of a sysplex file is given below:
Figure GDA0002888890970000041
Figure GDA0002888890970000051
when the method is implemented, a first parameter is required to be obtained, and the first parameter describes a target field and a processing mode of the target field. For example, a first parameter a is designed to describe the fields and processing modes involved in the application (or requirement). In one example, the first parameter may include: table name, target field sequence number, target field name, target field position description, target field data type and target field processing mode. Of course, the specific structure of the first parameter may have different structural designs according to different applications.
Taking desensitization of sensitive data as an example, two fields of the INVM table need to be desensitized, and the structural design example of the first parameter a of the table is as follows:
Figure GDA0002888890970000052
the first column is the table name, the second column is the sequence number, the third column is the field name + the location description of the contents of the field part, the fourth column describes the data type of the field to be desensitized, and the fifth and sixth columns are the desensitized major + minor. It is understood that different applications may have different structural designs of the first parameter a.
As described above, the first parameter A describes the data manipulation method of the 2 fields (KEY _1 and CUSTOMER _ NO) of the INVM table of interest for desensitization requirements.
In implementation, after the first parameter is obtained, the first parameter is processed into a second parameter by using a sysplex file, wherein the second parameter describes a target field, a position of the target field in a data file, and a processing mode of the target field. Since the sysplex file describes the data structure of the data file, the first parameter can be processed into the second parameter using the sysplex file. For example, the location of the target field in the data file may be determined from the sysplex file; the second parameter is obtained by adding the location of the target field in the data file to the first parameter. In one example, the second parameter may include: table name, target field sequence number, target field name, target field position description, target field data type, target field processing mode and target field position in the data file. Of course, the specific structure of the second parameter may have different structural designs according to different applications.
In one example, the location of the target field in the data file may include: the start and end positions of the target field in the data file. Of course, the location of the target field in the data file may also be described in other ways, such as the starting location of the target field in the data file and the length of the field.
Still taking the above-mentioned desensitization of sensitive data as an example, according to the sysplex file and the first parameter a, the positions of 2 fields in the first parameter a in the UNLOAD file can be known through calculation, so as to process a second parameter B, which is exemplified as follows:
Figure GDA0002888890970000061
in the second parameter B, the start and end positions of the fields in the first parameter a are supplemented.
As described above, the processing of the first parameter into the second parameter by using the sysplex file is equivalent to the processing of the application-related parameter into copy ok of the UNLOAD file by using the sysplex file, and the dynamic generation of the data structure in the host can be realized without creating a copy ok of the UNLOAD file.
And processing the data file according to the second parameter after the first parameter is processed into the second parameter. In an embodiment, the target field may be located and found in the data file according to the position of the target field in the second parameter in the data file; and processing the target field in the data file according to the processing mode of the target field in the second parameter. Still taking the above-mentioned desensitization of sensitive data as an example, the subsequent data processing program (desensitization in this example) may find the field according to the field location of the second parameter B, and process the data according to the agreed data processing mode, so as to obtain the final data file C.
In the above embodiment, the sysplex file may be used to process the first parameter a into the second parameter B meeting the processing requirements of the COBOL program, the COBOL program is designed, and the UNLOAD file is processed into the final data file C according to the fields in the second parameter B and the behavior patterns of the fields. In the development process, the structural design of the first parameter a can meet the processing requirements of various data types (including exceptional data) according to actual requirements.
Based on the same inventive concept, the embodiment of the present invention further provides an apparatus for dynamically generating a data structure in a host, as described in the following embodiments. Because the principle of the device for solving the problems is similar to the method for dynamically generating the data structure in the host, the implementation of the device can refer to the implementation of the method for dynamically generating the data structure in the host, and repeated parts are not described again.
Fig. 2 is a schematic diagram of an apparatus for dynamically generating a data structure in a host according to an embodiment of the present invention, as shown in fig. 2, the apparatus may include:
the system comprises a data downloading module 201, a data processing module and a processing module, wherein the data downloading module 201 is used for downloading a data table to be processed into a data file and obtaining a sysplex file corresponding to the data file, and the sysplex file describes a data structure of the data file; in an embodiment, the data table data UNLOAD may be converted into a file by using a tool provided by the host;
a parameter obtaining module 202, configured to obtain a first parameter, where the first parameter describes a target field and a processing manner of the target field;
a parameter processing module 203, configured to process the first parameter into a second parameter by using the sysplex file, where the second parameter describes a target field, a position of the target field in the data file, and a processing manner of the target field;
and the data processing module 204 is configured to process the data file according to the second parameter.
The parameter processing module 203 in the embodiment can improve the development productivity, and does not need to maintain COPYBOOK when the subsequent data table is changed, thereby reducing the maintenance workload; the data processing module 204 can improve the reusability of the module by using the second parameter without writing different COBOL programs for processing each time different tables are processed, thereby improving the development and maintenance efficiency.
In one embodiment, the parameter processing module 203 may be further configured to:
determining the position of a target field in the data file according to the SYSPUNCH file;
and obtaining the second parameter by adding the position of the target field in the data file to the first parameter.
In one embodiment, the first parameter may include:
table name, target field sequence number, target field name, target field position description, target field data type and target field processing mode;
and/or, the second parameter may include:
table name, target field sequence number, target field name, target field position description, target field data type, target field processing mode and target field position in the data file.
In one embodiment, the location of the target field in the data file may include: a start position and an end position of a target field in the data file.
In one embodiment, the data processing module 204 may be further configured to:
positioning and finding a target field in the data file according to the position of the target field in the second parameter in the data file;
and processing the target field in the data file according to the processing mode of the target field in the second parameter.
The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the processor implements the method for dynamically generating the data structure in the host.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program for executing the method for dynamically generating a data structure in a host is stored in the computer-readable storage medium.
In summary, in the embodiment of the present invention, a data table to be processed is downloaded into a data file, and a sysplex file corresponding to the data file is obtained, where the sysplex file describes a data structure of the data file; obtaining a first parameter, wherein the first parameter describes a target field and a processing mode of the target field; processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field; therefore, the dynamic generation of the data structure in the host is realized, the development productivity can be improved, the COPYBOOK does not need to be maintained when the subsequent data table is changed, and the maintenance workload is reduced; the data file is processed according to the second parameter, so that reusability can be improved, different COBOL programs do not need to be written for processing each time different tables are processed, and development and maintenance efficiency is improved.
In embodiments, applications may only focus on and handle specific fields, and other unrelated fields may change without modifying the parameter version. In an embodiment, a data structure (equivalent to COPYBOOK) related to an application may be automatically generated in a batch running process, where a sysplex file is automatically generated, processing a first parameter into a second parameter using the sysplex file is also automatically performed, and in the case of a change in a table data structure, automatic update is supported without manual maintenance.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A method for dynamically generating a data structure in a host, comprising:
downloading a data table to be processed into a data file, and obtaining a SYSPUNCH file corresponding to the data file, wherein the SYSPUNCH file describes a data structure of the data file;
obtaining a first parameter, wherein the first parameter describes a target field and a processing mode of the target field;
processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field;
processing the data file according to the second parameter;
processing the first parameter into a second parameter using the sysplex file, including:
determining the position of a target field in the data file according to the SYSPUNCH file;
and obtaining the second parameter by adding the position of the target field in the data file to the first parameter.
2. The method of claim 1, wherein the first parameter comprises:
table name, target field sequence number, target field name, target field position description, target field data type and target field processing mode;
and/or, the second parameter comprises:
table name, target field sequence number, target field name, target field position description, target field data type, target field processing mode and target field position in the data file.
3. The method of claim 1, wherein the location of a target field in the data file comprises: a start position and an end position of a target field in the data file.
4. A method according to any one of claims 1 to 3, wherein processing the data file in accordance with the second parameter comprises:
positioning and finding a target field in the data file according to the position of the target field in the second parameter in the data file;
and processing the target field in the data file according to the processing mode of the target field in the second parameter.
5. An apparatus for dynamic generation of data structures in a host, comprising:
the system comprises a data downloading module, a data processing module and a data processing module, wherein the data downloading module is used for downloading a data table to be processed into a data file and acquiring a SYSPUNCH file corresponding to the data file, and the SYSPUNCH file describes a data structure of the data file;
the device comprises a parameter obtaining module, a processing module and a processing module, wherein the parameter obtaining module is used for obtaining a first parameter, and the first parameter describes a target field and a processing mode of the target field;
the parameter processing module is used for processing the first parameter into a second parameter by using the SYSPUNCH file, wherein the second parameter describes a target field, the position of the target field in the data file and the processing mode of the target field;
the data processing module is used for processing the data file according to the second parameter;
the parameter processing module is further configured to:
determining the position of a target field in the data file according to the SYSPUNCH file;
and obtaining the second parameter by adding the position of the target field in the data file to the first parameter.
6. The apparatus of claim 5, wherein the first parameter comprises:
table name, target field sequence number, target field name, target field position description, target field data type and target field processing mode;
and/or, the second parameter comprises:
table name, target field sequence number, target field name, target field position description, target field data type, target field processing mode and target field position in the data file.
7. The apparatus of claim 5, wherein a location of a target field in the data file comprises: a start position and an end position of a target field in the data file.
8. The apparatus of any of claims 5 to 7, wherein the data processing module is further to:
positioning and finding a target field in the data file according to the position of the target field in the second parameter in the data file;
and processing the target field in the data file according to the processing mode of the target field in the second parameter.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 4 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 4.
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