CN105631019A - Metadata extension method and device - Google Patents
Metadata extension method and device Download PDFInfo
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- CN105631019A CN105631019A CN201511017596.7A CN201511017596A CN105631019A CN 105631019 A CN105631019 A CN 105631019A CN 201511017596 A CN201511017596 A CN 201511017596A CN 105631019 A CN105631019 A CN 105631019A
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- metadata
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/901—Indexing; Data structures therefor; Storage structures
- G06F16/9014—Indexing; Data structures therefor; Storage structures hash tables
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/907—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
Abstract
The invention provides a metadata extension method and device. The method includes the steps of adding properties of a HashMap type to extension metadata when metadata is extended for a service application, and storing definition information of the extended metadata in the priorities of the HashMap type. Through the technical scheme, extended metadata is prevented from influencing other service applications, and the flexibility and robustness of data modeling functions of a public development platform are enhanced.
Description
Technical field
The present invention relates to technical field of software development, specifically, it relates to a kind of metadata profile method and a kind of metadata profile device.
Background technology
Current business management software development company usually can develop a public development platform and the exploitation of each service application be supported, major part employs the development approach of model-driven, and the method is that the theory based on object modeling describes business model. The descriptor of business model is the data describing business object in fact, i.e. metadata. The appearance of metadata and use enormously simplify the performance history of software, because more meet the thinking habit of Software development personnel with the Software development process of metadata driven, and the Software development in each stage is connected to get up, reduce original complexity and eliminate the discordance of business description. Public development platform can provide the definition of all kinds of metadata when design setting model framework, comprises the definition of business entity, entity relation, business entity object etc. relevant information.
But the metadata definition that public development platform provides can run into some problems; such as the metadata of a service application can comprise entity title, entity tag etc. usually; if during extended metadata; such as whether definition business entity can full-text search; if public development platform increases this definition information for metadata is unified under this kind of scene, the product line of all service application using public development platform can be had influence on.
Therefore, when extended metadata, the service application how avoiding the metadata of expansion to have influence on other becomes problem demanding prompt solution.
Summary of the invention
The present invention is just based on the problems referred to above, it is proposed that a kind of new technical scheme, and the metadata avoiding expansion has influence on other service application, and enhances handiness and the stalwartness of public development platform data modeling function.
In view of this, an aspect of of the present present invention proposes a kind of metadata profile method, comprising: when to service application extended metadata, is the attribute of the metadata interpolation HashMap type of expansion; The definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
In this technical scheme, when to service application extended metadata, by the definition information of the metadata of expansion being saved in the attribute of HashMap type, make the definition information of the metadata of expansion only that this service application is visible, all service application are all visible by the definition information of the metadata avoiding expansion, thus the metadata avoiding expansion has influence on other service application. In addition, also avoid to database structure and the program code logic of changing public development platform during metadata profile, higher abstract public development platform metadata modeling function, thus enhance handiness and the stalwartness of public development platform data modeling function.
In technique scheme, preferably, the attribute of described HashMap type comprises: the unique key of attribute and attribute value, and the unique key of described attribute is for identifying the purposes of the metadata definition of described expansion, and described attribute value is for identifying the value of the metadata definition attribute of described expansion.
In this technical scheme, the attribute of HashMap type comprises: the unique key of attribute and attribute value, such as, using the Key in the attribute of HashMap type as the unique key of attribute, using the Value in the attribute of HashMap type as attribute value, this attribute value supports various data type, the unique key of attribute is for identifying the purposes of the metadata definition of expansion, other business developments personnel can recognize the concrete purposes of the metadata of this expansion according to the unique key of attribute like this, thus reduces the use difficulty of public development platform. Attribute value in the attribute of HashMap type preserves the value of the metadata definition attribute of expansion, and the value of this definition attribute refers to concrete numerical value, thus realizes the preservation of the definition information of the metadata of expansion.
In above-mentioned any technology scheme, preferably, the described metadata for expansion adds the step of the attribute of HashMap type, also comprising: the attribute list of the metadata of newly-built described expansion, the crucial field in described attribute list comprises: the concrete object of Property Name, described attribute value, metadata type and metadata.
In this technical scheme, by the attribute list of the metadata of newly-built expansion, the definition information correspondence of the metadata of expansion is kept in this attribute list, such that it is able to define the metadata of expansion according to the actual demand of service application, and realizes the preservation of definition information.
In above-mentioned any technology scheme, preferably, the step that the described definition information by the metadata of described expansion is saved in the attribute of described HashMap type, specifically comprise: when being in Modeling and Design state or running status in described service application, the definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
In this technical scheme, it is possible to when being in Modeling and Design state or running status in service application, the definition information of the metadata of expansion is preserved, thus more flexibly definition information is preserved, and then improve the handiness of metadata profile.
In above-mentioned any technology scheme, preferably, after the step that the described definition information by the metadata of described expansion is saved in the attribute of described HashMap type, comprise: the described definition information of the metadata of described expansion is loaded in internal memory, to use the described definition information of buffer memory in described internal memory when described service application is run.
In this technical scheme, by the definition information of the metadata of expansion is loaded in internal memory, then operationally directly can obtain definition information from internal memory in service application, avoid and load definition information when service application is run, thus improve the travelling speed of service application.
The another aspect of the present invention proposes a kind of metadata profile device, comprising: adding device, for, when to service application extended metadata, being the attribute of the metadata interpolation HashMap type of expansion; Storage unit, for being saved in the definition information of the metadata of described expansion in the attribute of described HashMap type.
In this technical scheme, when to service application extended metadata, by the definition information of the metadata of expansion being saved in the attribute of HashMap type, make the definition information of the metadata of expansion only that this service application is visible, all service application are all visible by the definition information of the metadata avoiding expansion, thus the metadata avoiding expansion has influence on other service application. In addition, also avoid to database structure and the program code logic of changing public development platform during metadata profile, higher abstract public development platform metadata modeling function, thus enhance handiness and the stalwartness of public development platform data modeling function.
In technique scheme, preferably, the attribute of described HashMap type comprises: the unique key of attribute and attribute value, and the unique key of described attribute is for identifying the purposes of the metadata definition of described expansion, and described attribute value is for identifying the value of the metadata definition attribute of described expansion.
In this technical scheme, the attribute of HashMap type comprises: the unique key of attribute and attribute value, such as, using the Key in the attribute of HashMap type as the unique key of attribute, using the Value in the attribute of HashMap type as attribute value, this attribute value supports various data type, the unique key of attribute is for identifying the purposes of the metadata definition of expansion, other business developments personnel can recognize the concrete purposes of the metadata of this expansion according to the unique key of attribute like this, thus reduces the use difficulty of public development platform. Attribute value in the attribute of HashMap type preserves the value of the metadata definition attribute of expansion, and the value of this definition attribute refers to concrete numerical value, thus realizes the preservation of the definition information of the metadata of expansion.
In above-mentioned any technology scheme, preferably, described adding device comprises: newly-built unit, and for the attribute list of the metadata of newly-built described expansion, the crucial field in described attribute list comprises: the concrete object of Property Name, described attribute value, metadata type and metadata.
In this technical scheme, by the attribute list of the metadata of newly-built expansion, the definition information correspondence of the metadata of expansion is kept in this attribute list, such that it is able to define the metadata of expansion according to the actual demand of service application, and realizes the preservation of definition information.
In above-mentioned any technology scheme, it may be preferred that described storage unit specifically for, when being in Modeling and Design state or running status in described service application, the definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
In this technical scheme, it is possible to when being in Modeling and Design state or running status in service application, the definition information of the metadata of expansion is preserved, thus more flexibly definition information is preserved, and then improve the handiness of metadata profile.
In above-mentioned any technology scheme, it may be preferred that also comprise: acquiring unit, for the described definition information of the metadata of described expansion is loaded in internal memory, to use the described definition information of buffer memory in described internal memory when described service application is run.
In this technical scheme, by the definition information of the metadata of expansion is loaded in internal memory, then operationally directly can obtain definition information from internal memory in service application, avoid and load definition information when service application is run, thus improve the travelling speed of service application.
By the technical scheme of the present invention, the metadata avoiding expansion has influence on other service application, and enhances handiness and the stalwartness of public development platform data modeling function.
Accompanying drawing explanation
Fig. 1 shows the schematic flow sheet of metadata profile method according to one embodiment of present invention;
Fig. 2 shows the structural representation of metadata profile device according to one embodiment of present invention.
Embodiment
In order to more clearly understand above-mentioned purpose, the feature and advantage of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail. It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understanding the present invention; but; the present invention can also adopt other to be different from other modes described here to implement, and therefore, protection scope of the present invention is by the restriction of following public specific embodiment.
Fig. 1 shows the schematic flow sheet of metadata profile method according to one embodiment of present invention.
As shown in Figure 1, metadata profile method according to one embodiment of present invention, comprising:
Step 102, when to service application extended metadata, is the attribute of the metadata interpolation HashMap type of expansion;
Step 104, is saved in the definition information of the metadata of described expansion in the attribute of described HashMap type.
In this technical scheme, when to service application extended metadata, by the definition information of the metadata of expansion being saved in the attribute of HashMap type, make the definition information of the metadata of expansion only that this service application is visible, all service application are all visible by the definition information of the metadata avoiding expansion, thus the metadata avoiding expansion has influence on other service application. In addition, also avoid to database structure and the program code logic of changing public development platform during metadata profile, higher abstract public development platform metadata modeling function, thus enhance handiness and the stalwartness of public development platform data modeling function.
In technique scheme, preferably, the attribute of described HashMap type comprises: the unique key of attribute and attribute value, and the unique key of described attribute is for identifying the purposes of the metadata definition of described expansion, and described attribute value is for identifying the value of the metadata definition attribute of described expansion.
In this technical scheme, the attribute of HashMap type comprises: the unique key of attribute and attribute value, such as, using the Key in the attribute of HashMap type as the unique key of attribute, using the Value in the attribute of HashMap type as attribute value, this attribute value supports various data type, the unique key of attribute is for identifying the purposes of the metadata definition of expansion, other business developments personnel can recognize the concrete purposes of the metadata of this expansion according to the unique key of attribute like this, thus reduces the use difficulty of public development platform. Attribute value in the attribute of HashMap type preserves the value of the metadata definition attribute of expansion, and the value of this definition attribute refers to concrete numerical value, thus realizes the preservation of the definition information of the metadata of expansion.
In above-mentioned any technology scheme, it may be preferred that step 102 also comprises: the attribute list of the metadata of newly-built described expansion, the crucial field in described attribute list comprises: the concrete object of Property Name, described attribute value, metadata type and metadata.
In this technical scheme, by the attribute list of the metadata of newly-built expansion, the definition information correspondence of the metadata of expansion is kept in this attribute list, such that it is able to define the metadata of expansion according to the actual demand of service application, and realizes the preservation of definition information.
In above-mentioned any technology scheme, it may be preferred that step 104 specifically comprises: when being in Modeling and Design state or running status in described service application, the definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
In this technical scheme, it is possible to when being in Modeling and Design state or running status in service application, the definition information of the metadata of expansion is preserved, thus more flexibly definition information is preserved, and then improve the handiness of metadata profile.
In above-mentioned any technology scheme, it may be preferred that after step 104, comprising: the described definition information of the metadata of described expansion is loaded in internal memory, to use the described definition information of buffer memory in described internal memory when described service application is run.
In this technical scheme, by the definition information of the metadata of expansion is loaded in internal memory, then operationally directly can obtain definition information from internal memory in service application, avoid and load definition information when service application is run, thus improve the travelling speed of service application.
Fig. 2 shows the structural representation of metadata profile device according to one embodiment of present invention.
As shown in Figure 2, metadata profile device 200 according to one embodiment of present invention, comprising: adding device 202 and storage unit 204, described adding device 202 for when to service application extended metadata, is the attribute that the metadata of expansion adds HashMap type; Described storage unit 204, for being saved in the definition information of the metadata of described expansion in the attribute of described HashMap type.
In this technical scheme, when to service application extended metadata, by the definition information of the metadata of expansion being saved in the attribute of HashMap type, make the definition information of the metadata of expansion only that this service application is visible, all service application are all visible by the definition information of the metadata avoiding expansion, thus the metadata avoiding expansion has influence on other service application. In addition, also avoid to database structure and the program code logic of changing public development platform during metadata profile, higher abstract public development platform metadata modeling function, thus enhance handiness and the stalwartness of public development platform data modeling function.
In technique scheme, preferably, the attribute of described HashMap type comprises: the unique key of attribute and attribute value, and the unique key of described attribute is for identifying the purposes of the metadata definition of described expansion, and described attribute value is for identifying the value of the metadata definition attribute of described expansion.
In this technical scheme, the attribute of HashMap type comprises: the unique key of attribute and attribute value, such as, using the Key in the attribute of HashMap type as the unique key of attribute, using the Value in the attribute of HashMap type as attribute value, this attribute value supports various data type, the unique key of attribute is for identifying the purposes of the metadata definition of expansion, other business developments personnel can recognize the concrete purposes of the metadata of this expansion according to the unique key of attribute like this, thus reduces the use difficulty of public development platform. Attribute value in the attribute of HashMap type preserves the value of the metadata definition attribute of expansion, and the value of this definition attribute refers to concrete numerical value, thus realizes the preservation of the definition information of the metadata of expansion.
In above-mentioned any technology scheme, preferably, described adding device 202 comprises: newly-built unit 2022, and for the attribute list of the metadata of newly-built described expansion, the crucial field in described attribute list comprises: the concrete object of Property Name, described attribute value, metadata type and metadata.
In this technical scheme, by the attribute list of the metadata of newly-built expansion, the definition information correspondence of the metadata of expansion is kept in this attribute list, such that it is able to define the metadata of expansion according to the actual demand of service application, and realizes the preservation of definition information.
In above-mentioned any technology scheme, it may be preferred that described storage unit 204 specifically for, when being in Modeling and Design state or running status in described service application, the definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
In this technical scheme, it is possible to when being in Modeling and Design state or running status in service application, the definition information of the metadata of expansion is preserved, thus more flexibly definition information is preserved, and then improve the handiness of metadata profile.
In above-mentioned any technology scheme, it may be preferred that also comprise: acquiring unit 206, for the described definition information of the metadata of described expansion is loaded in internal memory, to use the described definition information of buffer memory in described internal memory when described service application is run.
In this technical scheme, by the definition information of the metadata of expansion is loaded in internal memory, then operationally directly can obtain definition information from internal memory in service application, avoid and load definition information when service application is run, thus improve the travelling speed of service application.
Technical scheme the following detailed description of the present invention:
This scheme is realized by Java technology, the metadata expanded is added the attribute of HashMap type: properties, for preserving the definition information of the self-defined metadata of service application, and set and get method is provided, service application can call, by respective business demand, the expansion that set realizes metadata, and calls the definition information that get obtains the metadata of expansion.
Specific implementation step is as follows:
One, the data structure of the metadata definition of design expansion
HashMap<String, String>properties is used to preserve the definition information of the metadata expanded:
1, in the attribute of HashMap type Key as the unique key of attribute of metadata definition of expansion, for identifying the purposes of the metadata definition of expansion;
2, in the attribute of HashMap type, Value is as the attribute value of the metadata definition of expansion, and for identifying the value of the metadata definition attribute of expansion, this attribute value supports various data type;
3, devising a property table in database, crucial field is as follows:
Name: the Property Name of the metadata definition of expansion, the Key of corresponding properties;
Value: the attribute value of the metadata definition of expansion, the Value of corresponding properties;
Metadata_type: the metadata type that the attribute of mark HashMap type is corresponding, the value of this metadata type is client entity, field, association relation etc.;
Metadata_id: the metadata type ID that the attribute of mark HashMap type is corresponding, such as client entity, order boss's relation etc.,
Wherein, name, metadata_type and metadata_id three can the unique key of composite attribute, metadata_type and metadata_id is corresponding, metadata_type represents metadata type, representing with the form of character string, metadata_id represents that the concrete object of metadata represents with numerical value.
Two, the metadata definition information of expansion is set
In order to support metadata to be expanded more flexibly, allowing service application to be expanded by metadata definition under two states, one is Modeling and Design state, and two is service system running state, supports the expansion to metadata definition more flexibly.
1, public development platform provides setPropertity (key, value) method;
2, when service application is in Modeling and Design state, when metadata initialize, public development platform calls this setPropertity (key according to the expansion that service application defines, value) method, the definition information of the metadata of expansion is saved in the property table (i.e. attribute list) of database, and it is loaded in the attribute of HashMap type.
Three, the definition information of the metadata of expansion is obtained
Service application can get the definition information of the metadata of expansion, and uses by the business demand of oneself, the public development platform concrete use-pattern that limit service is not applied.
1, public exploitation backstage provides getPropertity (key) method;
2, after service application calls getPropertity (key) method, the definition information of the metadata of expansion is loaded in internal memory, definition information is operated by respective business demand when service application is run;
3, the backstage code of service application can be both used in, it is also possible to for front-end code, be exemplified below:
1) whether can full-text search after, backstage can add full-text search center when entity preserves related entities data if extending business entity;
2) whether the field extending business entity can as querying condition, then foreground by the value of definition, can show corresponding inquiry form.
The technical scheme being more than described with reference to the accompanying drawings the present invention, the metadata avoiding expansion has influence on other service application, and enhances handiness and the stalwartness of public development platform data modeling function.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a metadata profile method, it is characterised in that, comprising:
When to service application extended metadata, it it is the attribute of the metadata interpolation HashMap type of expansion;
The definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
2. metadata profile method according to claim 1, it is characterized in that, the attribute of described HashMap type comprises: the unique key of attribute and attribute value, the unique key of described attribute is for identifying the purposes of the metadata definition of described expansion, and described attribute value is for identifying the value of the metadata definition attribute of described expansion.
3. metadata profile method according to claim 2, it is characterised in that, the described metadata for expansion adds the step of the attribute of HashMap type, also comprises:
The attribute list of the metadata of newly-built described expansion, the crucial field in described attribute list comprises: the concrete object of Property Name, described attribute value, metadata type and metadata.
4. metadata profile method according to any one of claim 1 to 3, it is characterised in that, the step that the described definition information by the metadata of described expansion is saved in the attribute of described HashMap type, specifically comprises:
When being in Modeling and Design state or running status in described service application, the described definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
5. metadata profile method according to any one of claim 1 to 3, it is characterised in that, after the step that the described definition information by the metadata of described expansion is saved in the attribute of described HashMap type, comprising:
The described definition information of the metadata of described expansion is loaded in internal memory, to use the described definition information of buffer memory in described internal memory when described service application is run.
6. a metadata profile device, it is characterised in that, comprising:
Adding device for when to service application extended metadata, is the attribute that the metadata of expansion adds HashMap type;
Storage unit, for being saved in the definition information of the metadata of described expansion in the attribute of described HashMap type.
7. metadata profile device according to claim 6, it is characterized in that, the attribute of described HashMap type comprises: the unique key of attribute and attribute value, the unique key of described attribute is for identifying the purposes of the metadata definition of described expansion, and described attribute value is for identifying the value of the metadata definition attribute of described expansion.
8. metadata profile device according to claim 7, it is characterised in that, described adding device comprises:
Newly-built unit, for the attribute list of the metadata of newly-built described expansion, the crucial field in described attribute list comprises: the concrete object of Property Name, described attribute value, metadata type and metadata.
9. metadata profile device according to any one of claim 6 to 8, it is characterised in that, described storage unit specifically for,
When being in Modeling and Design state or running status in described service application, the described definition information of the metadata of described expansion is saved in the attribute of described HashMap type.
10. metadata profile device according to any one of claim 6 to 8, it is characterised in that, also comprise:
Acquiring unit, for being loaded in internal memory by the described definition information of the metadata of described expansion, to use the described definition information of buffer memory in described internal memory when described service application is run.
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| CN110825358B (en) * | 2019-11-22 | 2023-07-21 | 广联达科技股份有限公司 | Multi-level system configuration service design method based on preamble priority matching rule |
| CN111984257A (en) * | 2020-06-29 | 2020-11-24 | 山东浪潮通软信息科技有限公司 | Solid modeling customized extension method and device |
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| CN112162731A (en) * | 2020-10-13 | 2021-01-01 | 广州乐摇摇信息科技有限公司 | Data expansion method, device, storage medium and electronic device |
| CN113726868A (en) * | 2021-08-26 | 2021-11-30 | 上海微盟企业发展有限公司 | Distributed service configuration device method and device based on business identity |
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