Metadata processing method and system, terminal and storage medium

Abstract

The invention discloses a metadata processing method and system, a terminal and a storage medium, and the method comprises the steps: obtaining to-be-analyzed metadata of a target business, carrying out the storage processing of the to-be-analyzed metadata, obtaining target metadata, carrying out the analysis processing of the target metadata, and obtaining a target analysis result; the target metadata is audited according to the analysis result to obtain an audit result, and if the audit result is that audit is passed, the target metadata is published according to the audit result to obtain a published result. According to the method, the corresponding metadata can be analyzed more comprehensively, so that the metadata can be utilized more effectively, and the data accuracy of subsequent metadata release is improved.

Description

Technical Field

[0001] The present invention relates to the field of data processing technology, and in particular to a metadata processing method, system, terminal and computer-readable storage medium. Background Art

[0002] In recent years, data has become an important production factor and strategic resource in various industries, among which metadata plays an important role. Metadata is information about the organization, data domain and its relationships. In other words, metadata is data that describes data and can provide context for various types of data, so as to better understand, manage and use data.

[0003] At present, the analysis of metadata is not comprehensive enough, so the corresponding metadata cannot be effectively utilized, and the accuracy of the subsequent metadata release is not high.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] The main purpose of the present invention is to provide a metadata processing method, aiming to solve the problem that the existing technology is not comprehensive enough in analyzing metadata, so that the corresponding metadata cannot be effectively utilized, and the data accuracy of subsequent metadata release is not high.

[0006] To achieve the above object, the present invention provides a metadata processing method, system, terminal and storage medium. The metadata processing method comprises the following steps:

[0007] Obtaining metadata to be analyzed of a target business, performing storage processing on the metadata to be analyzed to obtain target metadata, and performing analysis processing on the target metadata to obtain a target analysis result;

[0008] The target metadata is audited according to the analysis result to obtain an audit result. If the audit result is passed, the target metadata is published according to the audit result to obtain a publication result.

[0009] Optionally, the metadata processing method, wherein the step of obtaining the metadata to be analyzed of the target business, performing storage processing on the metadata to be analyzed to obtain target metadata, and performing analysis processing on the target metadata to obtain a target analysis result, further includes:

[0010] Acquire attribute information of metadata to be collected and data relationships of the metadata to be collected, and create a metadata collection model according to the attribute information and the data relationships, wherein the data relationships include combination relationships and dependency relationships;

[0011] The metadata process requirements of the target user are obtained, and the metadata collection model is audited and processed according to the metadata process requirements to obtain a target metadata collection model, wherein the audit process includes model definition, model publishing and model maintenance.

[0012] Optionally, the step of acquiring metadata to be analyzed of the target business and performing storage processing on the metadata to be analyzed to obtain target metadata specifically includes:

[0013] Parameter configuration is performed on the target metadata collection model, and data collection is performed on the target task according to the configured target metadata collection model to obtain metadata to be analyzed, wherein the parameter configuration includes data source collection parameter configuration and timing collection parameter configuration;

[0014] The metadata to be analyzed is reviewed for entry into the database to obtain a review result, metadata to be analyzed that has passed the review is obtained according to the review result, and data modification and data grouping are performed on the metadata to be analyzed that have passed the review to obtain target metadata.

[0015] Optionally, the metadata processing method, wherein the analyzing and processing the target metadata to obtain the target analysis result, specifically includes:

[0016] Performing data analysis on the target metadata according to business characteristics to obtain a first analysis result, wherein the data analysis includes metadata historical version analysis, metadata source distribution analysis, metadata type analysis, and metadata quantity change trend analysis;

[0017] Obtaining metadata relations of the target metadata, and performing level analysis and association analysis on the target metadata according to the metadata relations to obtain a second analysis result, wherein the level analysis includes table level analysis, row level analysis, and field level analysis, and the association analysis includes impact analysis, attribute difference analysis, and association degree analysis;

[0018] The first analysis result and the second analysis result are combined to obtain a target analysis result.

[0019] Optionally, the metadata processing method, wherein the step of reviewing the target metadata according to the analysis result to obtain a review result, and if the review result is that the review is passed, publishing the target metadata according to the review result to obtain a publishing result, specifically includes:

[0020] Acquire a metadata publishing request according to the analysis result, and perform review processing on the target metadata according to the metadata publishing request to obtain a review result;

[0021] If the target metadata meets the preset publishing standard, the review result is determined to be passed, and the target metadata is published according to the review result to obtain a publishing result.

[0022] Optionally, the metadata processing method, wherein the target metadata is audited according to the analysis result to obtain an audit result, and if the audit result is passed, the target metadata is published according to the audit result to obtain a publication result, and then further comprises:

[0023] When it is detected that the target user needs to change the target metadata, obtaining a metadata change request of the target user, and performing data change on the target metadata according to the metadata change request;

[0024] The changed target metadata is audited, and if the audit passes, the changed target metadata is republished.

[0025] Optionally, the metadata processing method, wherein the target metadata is audited according to the analysis result to obtain an audit result, and if the audit result is passed, the target metadata is published according to the audit result to obtain a publication result, and then further comprises:

[0026] When it is detected that the target user needs to log off the data, the corresponding metadata information is obtained, and the target metadata is screened according to the metadata information to obtain the screening result;

[0027] If there is corresponding metadata in the screening result, the metadata is offline processed according to the screening result to obtain a data offline result.

[0028] Optionally, in the metadata processing method, the metadata processing system includes:

[0029] The data analysis module is used to obtain the metadata to be analyzed of the target business, store the metadata to be analyzed into a database to obtain the target metadata, and analyze the target metadata to obtain the target analysis result;

[0030] The data publishing module is used to review the target metadata according to the analysis result to obtain a review result. If the review result is passed, the target metadata is published according to the review result to obtain a publishing result.

[0031] In addition, to achieve the above-mentioned purpose, the present invention also provides a terminal, wherein the terminal includes: a memory, a processor, and a metadata processing program stored in the memory and executable on the processor, and when the metadata processing program is executed by the processor, the steps of the metadata processing method described above are implemented.

[0032] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a metadata processing program, and when the metadata processing program is executed by a processor, the steps of the metadata processing method described above are implemented.

[0033] In the present invention, the metadata to be analyzed of the target business is obtained, the metadata to be analyzed is processed into a database to obtain the target metadata, and the target metadata is analyzed to obtain the target analysis result; the target metadata is reviewed according to the analysis result to obtain the review result, and if the review result is that the review is passed, the target metadata is published according to the review result to obtain the publication result. The present invention can analyze the corresponding metadata more comprehensively, so as to make more effective use of the metadata and improve the data accuracy of subsequent metadata publication. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a flow chart of a preferred embodiment of the method for processing metadata in the present invention;

[0035] Figure 2 It is a structural diagram of a preferred embodiment of the metadata processing system of the present invention;

[0036] Figure 3 It is a structural diagram of a preferred embodiment of the terminal of the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The metadata processing method described in the preferred embodiment of the present invention is as follows: Figure 1 As shown, the metadata processing method includes the following steps:

[0041] Step S10: Obtain the metadata to be analyzed of the target business, perform storage processing on the metadata to be analyzed to obtain target metadata, and perform analysis processing on the target metadata to obtain a target analysis result.

[0042] The step S10 comprises:

[0043] Step S11, configuring parameters of the target metadata collection model, and collecting data for the target task according to the configured target metadata collection model to obtain metadata to be analyzed, wherein the parameter configuration includes data source collection parameter configuration and timing collection parameter configuration;

[0044] Step S12: conducting a review of the metadata to be analyzed, obtaining a review result, obtaining metadata to be analyzed that has passed the review according to the review result, and performing data modification and data grouping on the metadata to be analyzed that has passed the review, to obtain target metadata;

[0045] Step S13: performing data analysis on the target metadata according to business characteristics to obtain a first analysis result, wherein the data analysis includes metadata historical version analysis, metadata source distribution analysis, metadata type analysis, and metadata quantity change trend analysis;

[0046] Step S14, obtaining the metadata relationship of the target metadata, and performing level analysis and association analysis on the target metadata according to the metadata relationship to obtain a second analysis result, wherein the level analysis includes table level analysis, row level analysis and field level analysis, and the association analysis includes impact analysis, attribute difference analysis and association degree analysis;

[0047] Step S15: Combine the first analysis result and the second analysis result to obtain a target analysis result.

[0048] Specifically, before analyzing the metadata to be analyzed of the target business, it is necessary to collect the corresponding metadata to be analyzed. In an embodiment of the present invention, the corresponding metadata to be analyzed is collected through a target metadata collection model, and the construction process of the target metadata collection model is specifically to obtain the attribute information of the metadata to be collected and the data relationship of the metadata to be collected, wherein the data relationship includes a combination relationship and a dependency relationship, and create a metadata collection model according to the attribute information and the data relationship; then, obtain the metadata process requirements of the target user, and review the metadata collection model according to the metadata process requirements to obtain the target metadata collection model, wherein the review process includes model definition, model publishing and model maintenance, so that according to the attributes defined in the target metadata collection model, for multi-source heterogeneous data sources, end-to-end data dictionary metadata collection of directly connected data sources can be realized. After obtaining the target metadata collection model, the target metadata collection model is parameterized, and data collection is performed on the target task according to the configured target metadata collection model to obtain the metadata to be analyzed, wherein the parameter configuration includes data source collection parameter configuration and timing collection parameter configuration.

[0049] Afterwards, the collected metadata to be analyzed needs to be managed in the warehouse, specifically, the metadata to be analyzed is reviewed for entry, and the review result is obtained. According to the review result, the metadata to be analyzed that has passed the review is obtained, and the metadata to be analyzed that has passed the review is modified and grouped to obtain the target metadata; then, the target metadata needs to be analyzed for data analysis and business analysis, wherein the specific process of the data analysis is to analyze the target metadata according to business characteristics to obtain a first analysis result, wherein the data analysis includes metadata historical version analysis, metadata source distribution analysis, metadata type analysis and metadata quantity change trend analysis; the specific process of the business analysis is to obtain the metadata relationship of the target metadata, and to perform level analysis and association analysis on the target metadata according to the metadata relationship to obtain a second analysis result, wherein the level analysis includes table level analysis, row level analysis and field level analysis, and the association analysis includes impact analysis, attribute difference analysis and correlation analysis; finally, the first analysis result and the second analysis result are combined to obtain the target analysis result.

[0050] Step S20: review the target metadata according to the analysis result to obtain a review result. If the review result is passed, publish the target metadata according to the review result to obtain a publishing result.

[0051] The step S20 comprises:

[0052] Step S21, obtaining a metadata publishing request according to the analysis result, and performing review processing on the target metadata according to the metadata publishing request to obtain a review result;

[0053] Step S22: If the target metadata meets the preset publishing standard, the review result is determined to be passed, and the target metadata is published according to the review result to obtain a publishing result.

[0054] Specifically, in an embodiment of the present invention, after obtaining the corresponding analysis result, it is necessary to perform a publishing process on the target metadata, specifically, obtaining a metadata publishing request according to the analysis result, and performing an audit process on the target metadata according to the metadata publishing request to obtain an audit result; if the target metadata meets the preset publishing standard, the audit result is determined to be approved, and the target metadata is published according to the audit result to obtain a publishing result; and the audit of the target metadata is based on ensuring quality control and information synchronization, and can also have a faster response speed to demand.

[0055] Furthermore, if the target metadata does not meet the preset publishing standards, the audit result is determined to be failed, and corresponding modification opinions are proposed based on the audit results, and corresponding reminder information is generated, and the modification opinions and reminder information are sent to relevant personnel to remind the relevant personnel to handle it in time.

[0056] Furthermore, when it is detected that the target user needs to change the target metadata, a metadata change request of the target user is obtained, and data of the target metadata is changed according to the metadata change request; and a data review is performed on the changed target metadata. If the changed target metadata fails the review, the reason for failure is obtained and sent to the target user, thereby reminding the target user to make modifications; if the changed target metadata passes the review, the changed target metadata is republished.

[0057] Furthermore, when it is detected that the target user needs to go offline, the corresponding metadata information is obtained, and the target metadata is screened according to the metadata information to obtain a screening result; if the corresponding metadata exists in the screening result, the metadata is taken offline according to the screening result to obtain a data offline result.

[0058] Furthermore, if Figure 2 As shown, based on the above metadata processing method, the present invention also provides a metadata processing system accordingly, and the metadata processing system includes:

[0059] The data analysis module 51 is used to obtain the metadata to be analyzed of the target business, perform storage processing on the metadata to be analyzed to obtain the target metadata, and perform analysis processing on the target metadata to obtain the target analysis result;

[0060] The data publishing module 52 is used to review the target metadata according to the analysis result to obtain a review result. If the review result is passed, the target metadata is published according to the review result to obtain a publishing result.

[0061] Furthermore, if Figure 3 As shown, based on the above metadata processing method, the present invention also provides a terminal, which includes a processor 10, a memory 20 and a display 30. Figure 3 Only some components of the terminal are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0062] In some embodiments, the memory 20 may be an internal storage unit of the terminal, such as a hard disk or memory of the terminal. In other embodiments, the memory 20 may also be an external storage device of the terminal, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the terminal. Further, the memory 20 may also include both an internal storage unit of the terminal and an external storage device. The memory 20 is used to store application software and various types of data installed in the terminal, such as the program code of the installation terminal. The memory 20 may also be used to temporarily store data that has been output or is to be output. In one embodiment, a metadata processing program 40 is stored on the memory 20, and the metadata processing program 40 can be executed by the processor 10, thereby realizing the metadata processing method in the present application.

[0063] In some embodiments, the processor 10 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run the program code stored in the memory 20 or process data, such as executing the metadata processing method.

[0064] In some embodiments, the display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 30 is used to display information on the terminal and to display a visual user interface. The components of the terminal communicate with each other via a system bus.

[0065] In one embodiment, when the processor 10 executes the program 40 for processing metadata in the memory 20, the following steps are implemented:

[0066] Obtaining metadata to be analyzed of a target business, performing storage processing on the metadata to be analyzed to obtain target metadata, and performing analysis processing on the target metadata to obtain a target analysis result;

[0067] The target metadata is audited according to the analysis result to obtain an audit result. If the audit result is passed, the target metadata is published according to the audit result to obtain a publication result.

[0068] The step of obtaining the metadata to be analyzed of the target business, storing the metadata to be analyzed to obtain target metadata, and analyzing the target metadata to obtain target analysis results may also include:

[0069] Acquire attribute information of metadata to be collected and data relationships of the metadata to be collected, and create a metadata collection model according to the attribute information and the data relationships, wherein the data relationships include combination relationships and dependency relationships;

[0070] The metadata process requirements of the target user are obtained, and the metadata collection model is audited and processed according to the metadata process requirements to obtain a target metadata collection model, wherein the audit process includes model definition, model publishing and model maintenance.

[0071] The step of obtaining the metadata to be analyzed of the target business and storing the metadata to be analyzed to obtain the target metadata specifically includes:

[0072] Parameter configuration is performed on the target metadata collection model, and data collection is performed on the target task according to the configured target metadata collection model to obtain metadata to be analyzed, wherein the parameter configuration includes data source collection parameter configuration and timing collection parameter configuration;

[0073] The metadata to be analyzed is reviewed for entry into the database to obtain a review result, metadata to be analyzed that has passed the review is obtained according to the review result, and data modification and data grouping are performed on the metadata to be analyzed that have passed the review to obtain target metadata.

[0074] The step of analyzing and processing the target metadata to obtain a target analysis result specifically includes:

[0075] Performing data analysis on the target metadata according to business characteristics to obtain a first analysis result, wherein the data analysis includes metadata historical version analysis, metadata source distribution analysis, metadata type analysis, and metadata quantity change trend analysis;

[0076] Obtaining metadata relations of the target metadata, and performing level analysis and association analysis on the target metadata according to the metadata relations to obtain a second analysis result, wherein the level analysis includes table level analysis, row level analysis, and field level analysis, and the association analysis includes impact analysis, attribute difference analysis, and association degree analysis;

[0077] The first analysis result and the second analysis result are combined to obtain a target analysis result.

[0078] The step of performing review processing on the target metadata according to the analysis result to obtain a review result, and if the review result is that the review is passed, performing publishing processing on the target metadata according to the review result to obtain a publishing result, specifically includes:

[0079] Acquire a metadata publishing request according to the analysis result, and perform review processing on the target metadata according to the metadata publishing request to obtain a review result;

[0080] If the target metadata meets the preset publishing standard, the review result is determined to be passed, and the target metadata is published according to the review result to obtain a publishing result.

[0081] The target metadata is reviewed and processed according to the analysis result to obtain a review result. If the review result is passed, the target metadata is published and processed according to the review result to obtain a publication result. The following further includes:

[0082] When it is detected that the target user needs to change the target metadata, obtaining a metadata change request of the target user, and performing data change on the target metadata according to the metadata change request;

[0083] The changed target metadata is audited, and if the audit passes, the changed target metadata is republished.

[0084] The target metadata is reviewed and processed according to the analysis result to obtain a review result. If the review result is passed, the target metadata is published and processed according to the review result to obtain a publication result. The following further includes:

[0085] When it is detected that the target user needs to log off the data, the corresponding metadata information is obtained, and the target metadata is screened according to the metadata information to obtain the screening result;

[0086] If there is corresponding metadata in the screening result, the metadata is offline processed according to the screening result to obtain a data offline result.

[0087] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a metadata processing program, and when the metadata processing program is executed by a processor, the steps of the metadata processing method described above are implemented.

[0088] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0089] Of course, those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the program can be stored in a computer-readable storage medium that can be read by a computer, and the program can include the processes of the above-mentioned method embodiments when executed. The computer-readable storage medium can be a memory, a disk, an optical disk, etc.

[0090] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for processing metadata, characterized in that: The metadata processing method includes: Obtaining metadata to be analyzed of a target business, performing storage processing on the metadata to be analyzed to obtain target metadata, and performing analysis processing on the target metadata to obtain a target analysis result; The target metadata is audited according to the analysis result to obtain an audit result. If the audit result is passed, the target metadata is published according to the audit result to obtain a publication result.

2. The metadata processing method according to claim 1, characterized in that: The step of obtaining the metadata to be analyzed of the target business, storing the metadata to be analyzed to obtain target metadata, and analyzing the target metadata to obtain target analysis results may also include: Acquire attribute information of metadata to be collected and data relationships of the metadata to be collected, and create a metadata collection model according to the attribute information and the data relationships, wherein the data relationships include combination relationships and dependency relationships; The metadata process requirements of the target user are obtained, and the metadata collection model is audited and processed according to the metadata process requirements to obtain a target metadata collection model, wherein the audit process includes model definition, model publishing and model maintenance.

3. The metadata processing method according to claim 2, characterized in that: The step of obtaining the metadata to be analyzed of the target business and performing storage processing on the metadata to be analyzed to obtain the target metadata specifically includes: Parameter configuration is performed on the target metadata collection model, and data collection is performed on the target task according to the configured target metadata collection model to obtain metadata to be analyzed, wherein the parameter configuration includes data source collection parameter configuration and timing collection parameter configuration; The metadata to be analyzed is reviewed for entry into the database to obtain a review result, metadata to be analyzed that has passed the review is obtained according to the review result, and data modification and data grouping are performed on the metadata to be analyzed that have passed the review to obtain target metadata.

4. The metadata processing method according to claim 1, characterized in that: The analyzing and processing the target metadata to obtain the target analysis result specifically includes: Performing data analysis on the target metadata according to business characteristics to obtain a first analysis result, wherein the data analysis includes metadata historical version analysis, metadata source distribution analysis, metadata type analysis, and metadata quantity change trend analysis; Obtaining metadata relations of the target metadata, and performing level analysis and association analysis on the target metadata according to the metadata relations to obtain a second analysis result, wherein the level analysis includes table level analysis, row level analysis, and field level analysis, and the association analysis includes impact analysis, attribute difference analysis, and association degree analysis; The first analysis result and the second analysis result are combined to obtain a target analysis result.

5. The metadata processing method according to claim 1, characterized in that: The step of reviewing the target metadata according to the analysis result to obtain a review result, and if the review result is that the review is passed, publishing the target metadata according to the review result to obtain a publishing result, specifically includes: Acquire a metadata publishing request according to the analysis result, and perform review processing on the target metadata according to the metadata publishing request to obtain a review result; If the target metadata meets the preset publishing standard, the review result is determined to be passed, and the target metadata is published according to the review result to obtain a publishing result.

6. The metadata processing method according to claim 1, characterized in that: The target metadata is reviewed and processed according to the analysis result to obtain a review result. If the review result is that the review is passed, the target metadata is published and processed according to the review result to obtain a publishing result. The following further includes: When it is detected that the target user needs to change the target metadata, obtaining a metadata change request of the target user, and performing data change on the target metadata according to the metadata change request; The changed target metadata is audited, and if the audit passes, the changed target metadata is republished.

7. The metadata processing method according to claim 1, characterized in that: The target metadata is reviewed and processed according to the analysis result to obtain a review result. If the review result is that the review is passed, the target metadata is published and processed according to the review result to obtain a publishing result. The following further includes: When it is detected that the target user needs to log off the data, the corresponding metadata information is obtained, and the target metadata is screened according to the metadata information to obtain the screening result; If there is corresponding metadata in the screening result, the metadata is offline processed according to the screening result to obtain a data offline result.

8. A metadata processing system, characterized in that: The metadata processing system includes: The data analysis module is used to obtain the metadata to be analyzed of the target business, store the metadata to be analyzed into a database to obtain the target metadata, and analyze the target metadata to obtain the target analysis result; The data publishing module is used to review the target metadata according to the analysis result to obtain a review result. If the review result is passed, the target metadata is published according to the review result to obtain a publishing result.

9. A terminal, characterized in that: The terminal includes a memory, a processor, and a metadata processing program stored in the memory and executable on the processor. When the metadata processing program is executed by the processor, the steps of the metadata processing method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer-readable storage medium stores a metadata processing program, and when the metadata processing program is executed by a processor, the steps of the metadata processing method according to any one of claims 1 to 7 are implemented.

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