com.facebook.presto.hive

Class SubfieldExtractor

java.lang.Object

com.facebook.presto.hive.SubfieldExtractor

public final class SubfieldExtractor
extends Object

Constructor Summary

Constructors

Constructor and Description
SubfieldExtractor(com.facebook.presto.spi.function.StandardFunctionResolution functionResolution, com.facebook.presto.spi.relation.ExpressionOptimizer expressionOptimizer, com.facebook.presto.spi.ConnectorSession connectorSession)

Method Summary

Modifier and Type	Method and Description
Optional<com.facebook.presto.common.Subfield>	extract(com.facebook.presto.spi.relation.RowExpression expression)
com.facebook.presto.spi.relation.DomainTranslator.ColumnExtractor<com.facebook.presto.common.Subfield>	toColumnExtractor()
com.facebook.presto.spi.relation.RowExpression	toRowExpression(com.facebook.presto.common.Subfield subfield, com.facebook.presto.common.type.Type columnType)

Methods inherited from class java.lang.Object

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

Constructor Detail

SubfieldExtractor

public SubfieldExtractor(com.facebook.presto.spi.function.StandardFunctionResolution functionResolution,
                         com.facebook.presto.spi.relation.ExpressionOptimizer expressionOptimizer,
                         com.facebook.presto.spi.ConnectorSession connectorSession)

Method Detail

toColumnExtractor

public com.facebook.presto.spi.relation.DomainTranslator.ColumnExtractor<com.facebook.presto.common.Subfield> toColumnExtractor()

extract

public Optional<com.facebook.presto.common.Subfield> extract(com.facebook.presto.spi.relation.RowExpression expression)

toRowExpression

public com.facebook.presto.spi.relation.RowExpression toRowExpression(com.facebook.presto.common.Subfield subfield,
                                                                      com.facebook.presto.common.type.Type columnType)