io.prestosql.operator.scalar

Class JsonExtract.ScalarValueJsonExtractor

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 and Description
ScalarValueJsonExtractor()

Method Summary

Modifier and Type	Method and 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