json-path/JsonPath
JsonPath
JsonPath is a Java library designed for querying and manipulating JSON documents using the JsonPath expression language. It functions as a query engine for extracting and filtering specific data from JSON structures through path-based expressions.
The library provides capabilities for transforming JSON documents by modifying values or mapping extracted data into Java objects. It also includes an aggregation library for calculating statistical metrics, such as sums and averages, on numeric arrays.
The project handles data extraction through array filtering and numerical aggregation. Performance is managed via path expression caching to reduce overhead during repeated queries.
Features
- Data Extraction - Provides a specialized domain language for querying and extracting specific data points from JSON documents.
- Array Filtering - Provides programmatic array filtering using boolean expressions to extract matching elements from JSON.
- Aggregation Libraries - Includes a dedicated library for performing statistical calculations on numeric arrays in JSON.
- JSON Document Manipulation - Enables modifying values and updating arrays within JSON documents.
- Numerical Aggregations - Provides a library for calculating sums, averages, and other statistical metrics on JSON numeric arrays.
- JSON Path Navigation - Implements path-based navigation to extract and filter data from hierarchical JSON structures.
- JsonPath Implementations - Provides a complete Java implementation of the JsonPath expression language for querying JSON.
- JSON-to-Model Mappers - Transforms extracted JSON data into plain Java objects using configurable mapping providers.
- In-Memory Caches - Uses in-memory caches to store pre-compiled path objects and reduce repetitive parsing overhead.
- Statistical Aggregates - Computes sums, averages, minimums, maximums, and standard deviations on numeric arrays.
- Query Expression Caching - Optimizes JSON query performance by caching pre-compiled path expressions.
- Pointer Path Caching - Optimizes repeated data access by caching pre-defined document paths.
- Adapter-Based Mapping - Implements adapter-based mapping to decouple the query engine from the final Java output types.
- JSON-Verarbeitung - Extracts data from JSON using XPATH-like syntax.
