CN110888672B - Method and system for implementing expression engine based on metadata architecture - Google Patents

Abstract

Embodiments of the present invention provide a method and system for implementing an expression engine based on a metadata framework. The method includes: obtaining user configuration information; an expression engine generating corresponding rule data according to the configuration information; when the user operates on entity business data, obtaining the corresponding data through the expression engine. The embodiment of the present invention adopts the expression engine based on the metadata architecture, which has the characteristics of more flexible configuration, strong expansibility, clear structure, perfect function and more convenient optimization compared with the traditional engine system.

Description

Method and system for implementing expression engine based on metadata architecture

technical field

The invention relates to the technical field of object development, in particular to a method and system for realizing an expression engine based on a metadata framework.

Background technique

In the development based on the expression engine, due to the introduction of the expression engine, the mutual transformation between the regularized expression and the object is realized.

Since the expression engine can handle the mapping relationship between expressions and objects, this mapping relationship is bidirectional; the expression engine can also support rich and diverse expression syntax calculations; the expression engine can also support necessary data type conversion. When applying the expression engine of the traditional architecture, due to the many business scenarios and business rules provided by the user, the corresponding engine architecture is more complicated, and at the same time, it is necessary to provide a separate interface for each business, thus forming an internal complex interface management mode , precisely because of the complexity of the architecture, it takes a lot of development time and adaptation workload to expand the business in the future, and the ability to expand is also very limited. Generally speaking, the expression engine of the traditional architecture has relatively weak business adaptability and poor scalability.

Therefore, it is necessary to propose a new expression engine implementation method that can overcome the above-mentioned defects.

Contents of the invention

Embodiments of the present invention provide a method and system for implementing an expression engine based on a metadata architecture to solve the defects in the prior art that the expression engine with a traditional architecture has a complex structure, is not easy to expand, and is inconvenient to optimize.

In the first aspect, an embodiment of the present invention provides a method for implementing an expression engine based on a metadata architecture, including:

Obtain user configuration information;

The expression engine generates corresponding rule data according to the configuration information;

When the user operates on the business data of the entity, the corresponding data is acquired through the expression engine.

Wherein, when the user operates the business data of the entity, the corresponding data is obtained through the expression engine, which also includes:

The user sets a default value in the preset field, obtains the default value by calling the expression engine, and performs preset operations on the business data based on the default value.

Wherein, the expression engine generates corresponding rule data according to the configuration information, specifically including:

The lower-end routing layer of the expression engine performs data query;

The upper-end analysis layer of the expression engine uses expressions described by metadata to output the corresponding rule data.

Wherein, the lower-end routing layer of the expression engine performs data query, specifically including:

In the lower routing layer, a database group is composed of several databases;

The database group performs routing and merging between data based on the metadata framework.

Wherein, the upper-end analysis layer of the expression engine uses an expression based on metadata description to output the corresponding rule data, specifically including:

The upper-end analysis layer obtains the configuration information, performs lexical analysis and syntax analysis on the configuration information based on the metadata framework, returns an optimization result, and outputs the corresponding rule data to the routing layer.

Wherein, the acquisition of user configuration information specifically includes:

The user provides preset expression rules according to preset business rules to form the configuration information.

Wherein, the expression engine provides a unified interface externally, and the unified interface is used to obtain the value corresponding to the expression.

In the second aspect, the embodiment of the present invention provides an expression engine implementation system based on metadata architecture, including:

The acquisition module is used to obtain the configuration information of the user;

A generation module, used for the expression engine to generate corresponding rule data according to the configuration information;

The return module is used to obtain corresponding data through the expression engine when the user operates on the business data of the entity.

In a third aspect, an embodiment of the present invention provides an electronic device, including:

A memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the program, implements any one of the steps of the expression engine implementation method based on the metadata architecture.

In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, any one of the metadata-based architecture-based expression engines can be implemented. method steps.

The implementation method and system of the expression engine based on the metadata architecture provided by the embodiments of the present invention, by adopting the expression engine based on the metadata architecture, compared with the traditional engine system, has more flexible configuration, strong scalability, clear structure, and complete functions And optimize more convenient features.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a method for implementing an expression engine based on a metadata architecture provided by an embodiment of the present invention;

Fig. 2 is the overall architecture diagram of the expression engine based on the metadata architecture of the present invention;

FIG. 3 is a structural diagram of an expression engine implementation system based on a metadata architecture provided by an embodiment of the present invention;

Fig. 4 is a structural block diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to solve a series of problems existing in the expression engine using the traditional architecture, the embodiment of the present invention proposes an expression engine implementation method based on the metadata architecture. For some nouns in metadata, the following definitions are made:

Metadata: data describing data;

Entity: A type of data described by metadata or called a model, for example: what fields does this entity have, and what types of fields (text fields, calculated fields, radio fields, etc.);

Data, the business data of a specified entity created by the end user, for example: the content of the text field entered by the user in the form, which value is selected in the radio field, etc.;

Expression, a set of texts with specific business rules configured by users based on their own business needs, for example: order.customer.delivery address.

Fig. 1 is a flowchart of a method for implementing an expression engine based on a metadata architecture provided by an embodiment of the present invention, as shown in Fig. 1 , including:

S1, acquiring user configuration information;

S2. The expression engine generates corresponding rule data according to the configuration information;

S3. When the user operates on the business data of the entity, the corresponding data is acquired through the expression engine.

Specifically, an expression engine is constructed, and in step S1, the user provides configuration information according to requirements;

In step S2, the expression engine generates relevant rule data according to the configuration information of the user;

In step S3, when the user operates on the business data of the entity, the corresponding data will be obtained through the expression engine.

The embodiment of the present invention adopts the expression engine based on the metadata architecture, which has the characteristics of more flexible configuration, strong expansibility, clear structure, perfect function and more convenient optimization compared with the traditional engine system.

Based on the foregoing embodiments, the method also includes before step S3:

The user sets a default value in the preset field, obtains the default value by calling the expression engine, and performs preset operations on the business data based on the default value.

Specifically, when users create new data, they expect to automatically set default values for some fields. At this time, users set dynamic default values for the specified fields according to the business. When creating new data, call the expression engine to obtain the default values on the fields. , and then automatically set the value, saving the user's operation.

For example, when creating an email template, the system needs to send emails to a group of users based on a certain event. All emails have templates. The same type of users use the same template, and there will be many different variables in the template; before sending emails, the template variables need to be (Expression) is replaced with the actual value (such as: order.Consignee), call the expression engine to obtain the value of the expression, replace the value in the template, and then send the email.

In addition to the above application scenarios, other business scenarios can also be covered, such as quotation rules, trigger rules, approval flow, CreekFlow, calculated fields, association filters, and lead conversion, etc.

In some specific application scenarios, the embodiment of the present invention realizes batch operations on business data by setting default values and engine expressions by customers, thereby improving operation efficiency and avoiding repeated and cumbersome operations by users.

Based on any of the above embodiments, the expression engine generates corresponding rule data according to the configuration information, specifically including:

The lower-end routing layer of the expression engine performs data query;

The upper-end analysis layer of the expression engine uses expressions described by metadata to output the corresponding rule data.

Wherein, the lower-end routing layer of the expression engine performs data query, specifically including:

In the lower routing layer, a database group is composed of several databases;

The database group performs routing and merging between data based on the metadata framework.

Wherein, the upper-end analysis layer of the expression engine uses an expression based on metadata description to output the corresponding rule data, specifically including:

The upper-end analysis layer obtains the configuration information, performs lexical analysis and syntax analysis on the configuration information based on the metadata framework, returns an optimization result, and outputs the corresponding rule data to the routing layer.

Specifically, Fig. 2 is an overall architecture diagram of the expression engine based on the metadata architecture of the present invention. As shown in Fig. 2, due to the introduction of the metadata architecture, the expression rules can be unified, and the upper layer (analysis layer) uses metadata-based description The storage structure of the lower layer (routing layer) remains stable and can be continuously optimized for this architecture.

The data stored in the routing layer in Figure 2 is placed in several databases. The database group formed can perform routing and merging processing between data based on the metadata architecture. The analysis layer obtains the configuration information provided by the user through the external interface, which is also Based on the metadata structure, the configuration information is comprehensively analyzed from the perspectives of lexical analysis and syntax analysis, and at the same time, after the analysis is completed, the optimization result is returned, and the corresponding data is finally output to the user.

The embodiment of the present invention realizes the response to user needs through the layered structure of the expression engine. The structure is clear and complete, and the functions and business modules are clearly defined. At the same time, the expression engine uses a unified exit, so that users do not need to care about where the data is obtained. .

Based on any of the above-mentioned embodiments, the acquiring user configuration information specifically includes:

The user provides preset expression rules according to preset business rules to form the configuration information.

Specifically, as shown in Figure 2, before the expression engine obtains the user's configuration information, the user formulates multiple corresponding configuration information according to his actual business needs, including multiple business scenarios, and inputs them to the expression engine. Data configuration can quickly generate expressions that meet business scenarios, and can be configured to any entity field created by oneself. Further, by adding entity fields to metadata, expressions can be configured in real time in corresponding business scenarios; at the same time, according to Business scenarios can also be expanded according to requirements, while the underlying storage structure of expressions is still stable and can be continuously optimized for this structure.

The embodiment of the present invention can quickly generate an expression conforming to a business scenario through metadata configuration, and can flexibly configure any self-created entity field.

Based on any of the above embodiments, the expression engine provides a unified interface externally, and the unified interface is used to obtain a value corresponding to an expression.

Specifically, due to the use of metadata structure description, it can shield the internal complex implementation of the engine, and the interface is unified, while the expression engine only provides the most basic interface to obtain the value corresponding to the expression.

The embodiment of the present invention simplifies the interface structure by unifying the external interface of the expression engine, so that the user can quickly transfer configuration information.

Fig. 3 is a structural diagram of an expression engine implementation system based on a metadata architecture provided by an embodiment of the present invention, as shown in Fig. 3 , including: an acquisition module 31, a generation module 32 and a return module 33; wherein:

The obtaining module 31 is used to obtain the configuration information of the user; the generating module 32 is used for the expression engine to generate corresponding rule data according to the configuration information; the returning module 33 is used for when the user operates the business data of the entity, through the The expression engine obtains the corresponding data.

The embodiment of the present invention adopts the expression engine based on the metadata architecture, which has the characteristics of more flexible configuration, strong expansibility, clear structure, perfect function and more convenient optimization compared with the traditional engine system.

Based on any of the above embodiments, the system further includes a preset module 34, the preset module 34 is used for the user to set a default value in the preset field, obtain the default value by calling the expression engine, and Preset operations are performed on the service data based on the default value.

In some specific application scenarios, the embodiment of the present invention realizes batch operations on business data by setting default values and engine expressions by customers, thereby improving operation efficiency and avoiding repeated and cumbersome operations by users.

Based on any of the above-mentioned embodiments, the generation module 32 includes a routing submodule 321 and an analysis submodule 322; wherein:

The routing sub-module 321 is used for the lower-end routing layer of the expression engine to query data, and the analysis sub-module 322 is used for the upper-end analysis layer of the expression engine to use expressions based on metadata descriptions to output the corresponding rules data;

Wherein the routing sub-module 321 is specifically used in the lower-end routing layer, and is composed of several databases to form a database group; the database group performs routing and merging between data based on the metadata architecture; the analysis sub-module 322 is specifically used Obtain the configuration information at the upper-end analysis layer, perform lexical analysis and syntax analysis on the configuration information based on the metadata framework, return an optimization result, and output the corresponding rule data to the routing layer.

The embodiment of the present invention realizes the response to user needs through the layered structure of the expression engine. The structure is clear and complete, and the functions and business modules are clearly defined. At the same time, the expression engine uses a unified exit, so that users do not need to care about where the data is obtained. .

Based on any of the above embodiments, the obtaining module 31 is specifically configured for the user to provide preset expression rules according to preset business rules to form the configuration information.

The embodiment of the present invention can quickly generate an expression conforming to a business scenario through metadata configuration, and can flexibly configure any self-created entity field.

Based on any of the above embodiments, the expression engine in each module provides a unified interface to the outside, and the unified interface is used to obtain the value corresponding to the expression.

The embodiment of the present invention simplifies the interface structure by unifying the external interface of the expression engine, so that the user can quickly transfer configuration information.

FIG. 4 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 4, the electronic device may include: a processor (processor) 410, a communication interface (Communications Interface) 420, a memory (memory) 430 and a communication bus 440, Wherein, the processor 410 , the communication interface 420 , and the memory 430 communicate with each other through the communication bus 440 . The processor 410 can call the logical instructions in the memory 430 to execute the following method: obtain the configuration information of the user; the expression engine generates corresponding rule data according to the configuration information; when the user operates the business data of the entity, through The expression engine obtains corresponding data.

In addition, the above logic instructions in the memory 430 may be implemented in the form of software function units and be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

On the other hand, an embodiment of the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the transmission method provided by the above-mentioned embodiments is implemented, for example, including : Obtain configuration information of the user; the expression engine generates corresponding rule data according to the configuration information; when the user operates on the business data of the entity, the corresponding data is obtained through the expression engine.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (8)

1. An expression engine implementation method based on a metadata architecture, which is characterized by comprising the following steps:

acquiring configuration information of a user;

the expression engine generates corresponding rule data according to the configuration information;

when the user operates the business data of the entity, the corresponding data is obtained through the expression engine;

the expression engine generates corresponding rule data according to the configuration information, and specifically comprises the following steps:

the lower end routing layer of the expression engine performs data query;

the upper analysis layer of the expression engine outputs the corresponding rule data by using an expression based on metadata description;

the upper analysis layer of the expression engine outputs the corresponding rule data by using an expression based on metadata description, and specifically comprises the following steps:

the upper analysis layer acquires the configuration information, performs lexical analysis and grammar analysis on the configuration information based on a metadata architecture, returns an optimization result, and outputs the corresponding rule data to the routing layer.

2. The method for implementing an expression engine based on a metadata architecture according to claim 1, wherein when the user operates on service data of an entity, obtaining corresponding data by the expression engine, further includes:

and the user sets a default value in a preset field, acquires the default value by calling the expression engine, and performs preset operation on the service data based on the default value.

3. The method for implementing an expression engine based on metadata architecture according to claim 1, wherein the lower routing layer of the expression engine performs data query, specifically comprising:

in the lower-end routing layer, a plurality of databases are combined to form a database group;

the database group performs routing and merging between data based on a metadata architecture.

4. The method for implementing an expression engine based on a metadata architecture according to claim 1, wherein the obtaining configuration information of a user specifically includes:

and the user provides a preset expression rule according to a preset service rule to form the configuration information.

5. The method according to any one of claims 1 to 4, wherein the expression engine provides a unified interface to the outside, and the unified interface is used for obtaining a value corresponding to an expression.

6. An expression engine implementation system based on a metadata architecture, comprising:

the acquisition module is used for acquiring configuration information of a user;

the generation module is used for generating corresponding rule data according to the configuration information by the expression engine;

the return module is used for acquiring corresponding data through the expression engine when the user operates the business data of the entity;

the expression engine generates corresponding rule data according to the configuration information, and specifically comprises the following steps:

the lower end routing layer of the expression engine performs data query;

the upper analysis layer of the expression engine outputs the corresponding rule data by using an expression based on metadata description;

the upper analysis layer of the expression engine outputs the corresponding rule data by using an expression based on metadata description, and specifically comprises the following steps:

the upper analysis layer acquires the configuration information, performs lexical analysis and grammar analysis on the configuration information based on a metadata architecture, returns an optimization result, and outputs the corresponding rule data to the routing layer.

7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the metadata architecture based expression engine implementation method of any one of claims 1 to 5 when the program is executed.

8. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of a metadata architecture based expression engine implementation method according to any of claims 1 to 5.

Images