Package io.trino.json

Class JsonPathInvocationContext

java.lang.Object

io.trino.json.JsonPathInvocationContext

public class JsonPathInvocationContext
extends Object

A class representing state, used by JSON-processing functions: JSON_EXISTS, JSON_VALUE, and JSON_QUERY. It is instantiated per driver, and allows gathering and reusing information across the processed rows. It contains a JsonPathEvaluator object, which caches ResolvedFunctions used by certain path nodes. Caching the ResolvedFunctions addresses the assumption that all or most rows shall provide values of the same types to certain JSON path operators.

Constructor Summary

Constructors

Constructor	Description
JsonPathInvocationContext()

Method Summary

Modifier and Type	Method	Description
JsonPathEvaluator	getEvaluator()
void	setEvaluator(JsonPathEvaluator evaluator)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JsonPathInvocationContext

public JsonPathInvocationContext()

Method Details

getEvaluator

public JsonPathEvaluator getEvaluator()

setEvaluator

public void setEvaluator(JsonPathEvaluator evaluator)