Package org.apache.drill.exec.store.easy.json.loader

Class InferredFieldFactory

java.lang.Object

org.apache.drill.exec.store.easy.json.loader.BaseFieldFactory

org.apache.drill.exec.store.easy.json.loader.InferredFieldFactory

All Implemented Interfaces:

FieldFactory

public class InferredFieldFactory
extends BaseFieldFactory

Create Drill field listeners based on the observed look-ahead tokens in JSON.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final org.slf4j.Logger	logger

Fields inherited from class org.apache.drill.exec.store.easy.json.loader.BaseFieldFactory

child, loader

Constructor Summary

Constructors

Constructor	Description
InferredFieldFactory(JsonLoaderImpl loader)

Method Summary

Modifier and Type	Method	Description
TypeProtos.MinorType	drillTypeFor(ValueDef.JsonType type)
ElementParser	fieldParser(FieldDefn fieldDefn)	Build a column and its listener based on a look-ahead hint.
ElementParser	forceArrayResolution(FieldDefn fieldDefn)
ElementParser	forceNullResolution(FieldDefn fieldDefn)
ElementParser	objectArrayParserFor(FieldDefn fieldDefn)	Create a map array column and its associated object array listener for the given key.
ValueParser	scalarParserFor(FieldDefn fieldDefn, boolean isArray)

Methods inherited from class org.apache.drill.exec.store.easy.json.loader.BaseFieldFactory

buildOuterArrays, ignoredFieldParser, loader, multiDimObjectArrayFor, multiDimScalarArrayFor, multiDimVariantArrayParserFor, objectArrayParserFor, objectArrayParserFor, objectParserFor, objectParserFor, objectParserFor, parserFactory, repeatedListSchemaFor, scalarArrayParserFor, scalarArrayParserFor, scalarListenerFor, scalarParserFor, scalarParserFor, variantArrayParserFor, variantParserFor

Methods inherited from class java.lang.Object

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

Field Details

logger

protected static final org.slf4j.Logger logger

Constructor Details

InferredFieldFactory

public InferredFieldFactory(JsonLoaderImpl loader)

Method Details

fieldParser

public ElementParser fieldParser(FieldDefn fieldDefn)

Build a column and its listener based on a look-ahead hint.

forceNullResolution

public ElementParser forceNullResolution(FieldDefn fieldDefn)

Specified by:

forceNullResolution in interface FieldFactory

Overrides:

forceNullResolution in class BaseFieldFactory

forceArrayResolution

public ElementParser forceArrayResolution(FieldDefn fieldDefn)

Specified by:

forceArrayResolution in interface FieldFactory

Overrides:

forceArrayResolution in class BaseFieldFactory

scalarParserFor

public ValueParser scalarParserFor(FieldDefn fieldDefn,
 boolean isArray)

objectArrayParserFor

public ElementParser objectArrayParserFor(FieldDefn fieldDefn)

Create a map array column and its associated object array listener for the given key.

drillTypeFor

public TypeProtos.MinorType drillTypeFor(ValueDef.JsonType type)