JsonExtract.JsonExtractor (presto-main 345 API)

All Known Implementing Classes:

JsonExtract.JsonSizeExtractor, JsonExtract.JsonValueJsonExtractor, JsonExtract.ObjectFieldJsonExtractor, JsonExtract.ScalarValueJsonExtractor

Enclosing class:

JsonExtract
```
public static interface JsonExtract.JsonExtractor<T>
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`extract(com.fasterxml.jackson.core.JsonParser jsonParser)`	Executes the extraction on the existing content of the JsonParser and outputs the match.

- Method Detail
  - extract
```
T extract(com.fasterxml.jackson.core.JsonParser jsonParser)
   throws IOException
```
    Executes the extraction on the existing content of the JsonParser and outputs the match.
    Notes:
    
    JsonParser must be on the FIRST token of the value to be processed when extract is called
    
    INVARIANT: when extract() returns, the current token of the parser will be the LAST token of the value
    Returns:
    
    the value, or null if not applicable
    
    Throws:
    
    IOException