Block chain query external index development framework

Abstract

The embodiment of the invention provides a block chain query external index development framework, and aims to improve query efficiency of an application platform layer in a block chain for a block chain infrastructure layer, so that the block chain query function is more diversified. The framework is applied to a block chain, and comprises a contract generation module for establishing a contractaccording to index logic and query logic defined by an index module; and modifying SDK calling codes and query logic in the contract according to query requirements to complete contract definition; adata adaptation module which adapts the data structure on the block chain to be a frame preset data structure; a data synchronization module which selects a corresponding data synchronization mode tosynchronize the data on the block chain into the framework; after data synchronization, calls an index logic in the contract to establish an index, and stores index data into a corresponding preset database, calls query logic in the contract according to the established index to complete a data query task, and defines library return query data according to query requirements.

Description

Technical field [0001] The present invention relates to a block chain, and more particularly, to a chain query block index external development framework. Background technique [0002] Block chain is a distributed shared books and databases, agreed by consensus on a specific algorithm, distributed accounting in the whole network, has decentralized, can not be altered, the entire left marks can be traced, collective defense, open and transparent Features. Initially applied block chain is used in public bitcoin chain project parties to the transaction can not be tampered with transactions generated in the case of distrust, but the researchers are pursuing to block chain worth more than that, with the block floor chain continues to mature and application of technology, high-speed block chain will eventually develop into the mature stage, the amount of data and applications based on the amount of the block chain, there will be a qualitative leap, how to provide rich query functionali...

AI Technical Summary

Problems solved by technology

[0003] However, since the blockchain infrastructure layer often focuses on the improvement of writing performance, there is less demand for the interface of the application platform layer, so only a small number of standard query interfaces can be provided, and the application platform layer is difficult to define due to changing requirements. Unified query requirements are realized by the infrastructure layer, which leads to the inability of the interface provided by the infrastructure layer to be directly used by the application platform layer, which in turn leads to the single query function and low query efficiency of the application platform layer for the blockchain infrastructure layer

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