Virtual XML Database for Distributed XQuery Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing distributed XQuery processing techniques, such as XRPC, require users to explicitly describe language extensions and face challenges with integration of different data types and performance issues, particularly when RPC functions are used within loops, leading to inefficiencies in processing and optimization.
Innovation Solution
A virtual XML database system that employs a central server with a virtual planner and XQuery processor to generate distributed search requests and integrate results without relying on XRPC, using REST methods like 'query' and 'gquery' for distributed XQuery processing, allowing for transparent processing and parallel execution across multiple servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If XRPC is used for distributed XQuery processing, then remote procedure call functionality is achieved, but the system requires explicit language extensions and suffers from performance issues when RPC functions are used within loops
Solution Approach 1:
The patent extracts the RPC function call mechanism from the loop structure and replaces it with a bulk data transfer approach. Instead of calling RPC functions iteratively for each element in a loop, the system generates a single distributed XQuery that processes all data in parallel across multiple servers, eliminating the performance penalty of repeated network calls within loops
2Adaptability or versatility
If traditional XRPC methods are used, then distributed processing is enabled, but transparency is reduced and integration of different data types becomes challenging
Solution Approach 1:
The patent implements a universal query processing framework that handles multiple data types (XML, relational, JSON, etc.) through a single distributed XQuery language. The system provides multi-functionality by enabling the same query language to work across different data sources and formats without requiring type-specific syntax extensions, thereby maintaining transparency and ease of operation
3Adaptability or versatility
If RPC functions are used within loops in XQuery, then complex queries can be executed, but the number of network messages increases significantly leading to performance degradation
Solution Approach 1:
The patent merges multiple separate RPC function calls that would be executed iteratively within a loop into a single distributed XQuery statement. The system combines the query logic and data retrieval operations into one unified query that is executed in parallel across servers, dramatically reducing network message count while maintaining the ability to handle complex queries
Data Source
AI summary
In a searching apparatus: a first receiving unit receives a search request from a client; based on the search request, a first generating unit generates a distributed search request to request a server to conduct a search and an integration request to integrate search results of the distributed search request; a first transmitting unit transmits the distributed search request to the server; a second transmitting unit transmits identification information of an execution result of the integration request to the client; a second receiving unit receives, from the client, an obtainment request to obtain the execution result identified by the identification information; a receiving unit receives the search results of the distributed search request from the server; an executing unit executes the integration request on the received search results; and a third transmitting unit transmits the execution result of the integration request to the client that transmitted the obtainment request.