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Method for constructing universal query language for multiple storage systems

A construction method and query language technology, applied in the direction of compiler construction, structured data retrieval, creation/generation of source code, etc. The effect of work efficiency

Pending Publication Date: 2021-12-21
上海观测未来信息技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] For large-scale software, a variety of different data storage systems are generally used. Different types of data storage systems have different characteristics such as management modes, capacities, and storage methods, and the types of data query operations, including query languages, also vary greatly. Differences, which bring a lot of technical difficulties to the use and maintenance of data storage systems

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  • Method for constructing universal query language for multiple storage systems

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Embodiment Construction

[0033] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0034] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood...

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Abstract

The invention provides a method for constructing a universal query language for multiple storage systems. The method comprises the following steps: designing grammar of a unified query language; compiling a description script of a grammatical rule; using a compiler, taking the grammar rule file as input, and generating an executable grammar analysis code; inputting specific statements of the unified query language, and generating a grammar analysis tree through lexical analysis and grammar analysis processing; analyzing contents in the grammar analysis tree, and translating the grammar analysis tree into a target query language in combination with a target storage system type; executing the target query language to realize query of the target storage system; and converting the query result into a uniform structure to be provided for the query client. Storage system selection is simplified, and the freedom degree of storage system selection is improved; a business system developer only needs to learn one grammar to realize data query of multiple storage systems; the invention has high expansibility, is convenient to transplant, is compatible with an existing storage system, and improves the development efficiency of application software.

Description

technical field [0001] The invention relates to the technical field of data storage and query, in particular to a method for constructing a general query language for multiple storage systems. Background technique [0002] For large-scale software, a variety of different data storage systems are generally used. Different types of data storage systems have different characteristics such as management modes, capacities, and storage methods, and the types of data query operations, including query languages, also vary greatly. This brings a lot of technical difficulties to the use and maintenance of the data storage system. Contents of the invention [0003] In view of this, the object of the present invention is to design a general query language for data query of various storage systems. [0004] The present invention provides a method for constructing a general query language of a multi-storage system, comprising the following steps: [0005] S1. Design the grammar of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/30G06F8/41G06F16/22G06F16/242
CPCG06F8/37G06F8/425G06F8/427G06F16/221G06F16/2246G06F16/2282G06F16/2433
Inventor 谭彪
Owner 上海观测未来信息技术有限公司
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