Parsers tested:
- Jayway JSONPath
- Java reference implementation of JSON Processing (Glassfish JSONP)
- A plain old Java Map with recursion
The goal was to investigate different ways and the performance of each way to determine which is the faster parser. The
path to the field / key would look something like field1.subField1.<array position>.finalField and variants of the
same in their own implementations.
It isn't a surprise that the Map implementation is faster than anything else. Results measured with StopWatch from
Spring in a JUnit test:
| nanoseconds | % of time | Test name |
|---|---|---|
| 15803083 | 62% | JsonPath |
| 7270000 | 28% | JSONP |
| 1111375 | 4% | Map Recursion |
| 21375 | 0% | Map Recursion |
| 22416 | 0% | Map Recursion |
| 1307334 | 5% | Map Recursion |
| 23417 | 0% | Map Recursion |