XML Node Mutation Map for Random Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current XML document processing systems face inefficiencies in random updates and serialization due to the need for materializing entire documents, leading to high memory and time consumption, with existing solutions like DOM and SAX/StAX lacking optimal performance for random updates and serialization.
Innovation Solution
Assigning unique IDs to nodes, using a 'mutation map' to track changes, and employing a 'lazy materialization' technique to update and serialize XML documents efficiently, avoiding unnecessary object creation and allowing for random updates and serialization without loading the entire document into memory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If DOM is used to update XML documents, then random update capability is provided, but memory consumption and processing time increase significantly due to materialization of the complete document into objects
Solution Approach 1:
The patent segments the XML document into a hierarchical structure of nodes (document node, element nodes, attribute nodes, text nodes) that can be independently accessed and updated. Each node is represented as a lightweight object containing only essential information (tag name, attributes, child node references) rather than materializing the entire document, enabling random updates with reduced memory consumption.
Solution Approach 2:
The patent applies local quality by materializing only the specific portions of the document that need to be accessed or updated, rather than the entire document. The system allows selective materialization of nodes based on access patterns, so that frequently accessed or modified sections are in memory while other sections remain in their compact representation.
2Reliability
If DOM is used to serialize XML documents, then complete document serialization is achieved, but processing time increases due to materialization of the entire document
Solution Approach 1:
The patent applies partial action by serializing only the portions of the document that have been modified or need to be output, rather than forcing serialization of the entire materialized document. The system tracks which nodes have changed and serializes only those sections, significantly reducing processing time while maintaining serialization completeness for the required data.
Solution Approach 2:
The patent performs preliminary actions by pre-compiling the document into a hierarchical node structure that facilitates efficient serialization. The node hierarchy is built once during parsing, and subsequent serialization operations can efficiently traverse and output only the necessary portions without re-parsing or re-materializing the entire document.
3Productivity
If SAX or StAX is used for fast serialization, then processing speed improves, but random update capability is lost
Solution Approach 1:
The patent introduces dynamics by creating a flexible node-based representation that supports both random updates and efficient serialization. The hierarchical node structure allows dynamic access to any node in the document hierarchy, enabling random updates while maintaining the ability to efficiently serialize by traversing only the necessary nodes based on change tracking.
4Productivity
If EMF is used to update XML documents, then performance improves over DOM, but memory consumption increases due to loading the entire document into memory
Solution Approach 1:
The patent segments the document into a hierarchical node structure that can be selectively loaded into memory. Instead of loading the entire document as EMF does, the system loads only the necessary nodes based on access patterns and update requirements. Each node contains minimal information needed for processing, reducing overall memory consumption while maintaining update performance.
Data Source
AI summary
A method, system, and computer program product for updating and serialization of a document, includes: assigning a unique ID to each node created in the document; materializing a root element start tag of the document; materializing a start tag for a child element of the root element; determining whether a change to the child element is required; in response to determining that the change to the child element is not required, skipping content of the child element; in response to determining that the change to the child element is required, updating the child element to form an updated element; pushing updated information for the child element into a mutation map; and serializing the document using the mutation map.