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Method and device for accessing database

A database and data technology, applied in the field of accessing databases, can solve problems such as difficulty in achieving interface consistency, hidden dangers in database upgrades and replacements, difficulty in unifying code norms, etc., to facilitate expansion and maintenance, reduce memory overhead, and ensure specifications sexual effect

Active Publication Date: 2015-12-30
BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Here, the current common practice still has the problem that the code standardization is not easy to unify
Specifically, although the HQL language provided by Hibernate solves the cross-database problem, the Hibernate framework itself supports both HQL and SQL. Hidden danger

Method used

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  • Method and device for accessing database
  • Method and device for accessing database
  • Method and device for accessing database

Examples

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Embodiment Construction

[0033]Exemplary implementations of the present invention are described below in conjunction with the accompanying drawings, which include various details of the implementations of the present invention to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0034] In the embodiment of the present invention, PO and VO are encapsulated in the form of Map to improve system performance. Hibernate is a table that maps entity classes to data. In the embodiment of the present invention, a parent class BaseObject is defined. Objects that inherit this class must correspond to tables in the database. Conversely, each table in th...

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Abstract

The invention provides a method and a device for accessing a database. According to the method and the device, the system performance and the development efficiency are beneficially improved, and besides, the standardization problem of interfaces is beneficially solved. The method comprises the following steps: receiving a class object and a value mapping table of a public interface class of a persistent layer, wherein the class object is obtained by abstracting the persistent layer as the public interface class; acquiring a value object according to the class object, and carrying out father entity filling on the value object according to the value mapping table and the class object; converting the filled value object into a persistent object; and storing data in the persistent object into the database.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for accessing a database. Background technique [0002] JDBC (JavaDataBaseConnectivity, java database connection) is a Java API for executing SQL statements, which can provide unified access to various relational databases. It consists of a set of classes and interfaces written in the Java language. JDBC provides a baseline from which higher-level tools and interfaces can be built to enable database developers to write database applications. At present, very few J2EE applications will directly access the database in the form of JDBC. After all, using an object-oriented programming language to access a relational database requires a lot of work in the development process. Most of the time, J2EE applications use the ORM framework for data access. The ORM (ObjectRelationalMapping) framework uses metadata to describe the details of object-relational mapping. M...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/2433
Inventor 李慧岩
Owner BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD
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