JsonExtract.ScalarValueJsonExtractor (presto-main 345 API)

java.lang.Object
- io.prestosql.operator.scalar.JsonExtract.ScalarValueJsonExtractor

All Implemented Interfaces:: JsonExtract.JsonExtractor<io.airlift.slice.Slice>

Enclosing class:: JsonExtract

public static class JsonExtract.ScalarValueJsonExtractor
extends Object
implements JsonExtract.JsonExtractor<io.airlift.slice.Slice>

Constructor Summary

Constructors
Constructor Description

ScalarValueJsonExtractor()

Method Summary

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

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ScalarValueJsonExtractor
```
public ScalarValueJsonExtractor()
```
- Method Detail
  - extract
```
public io.airlift.slice.Slice extract(com.fasterxml.jackson.core.JsonParser jsonParser)
                               throws IOException
```
    Description copied from interface: JsonExtract.JsonExtractor
    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
    Specified by:
    
    extract in interface JsonExtract.JsonExtractor<io.airlift.slice.Slice>
    
    Returns:
    
    the value, or null if not applicable
    
    Throws:
    
    IOException