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

Class ExtendedTypeFieldFactory

java.lang.Object

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

org.apache.drill.exec.store.easy.json.extended.ExtendedTypeFieldFactory

All Implemented Interfaces:

FieldFactory

public class ExtendedTypeFieldFactory
extends BaseFieldFactory

Field Summary

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

child, loader

Constructor Summary

Constructors

Constructor	Description
ExtendedTypeFieldFactory(JsonLoaderImpl loader, FieldFactory child)

Method Summary

Modifier and Type	Method	Description
ElementParser	fieldParser(FieldDefn fieldDefn)	Create a parser for a field.
ValueParser	scalarParserFor(FieldDefn fieldDefn, ColumnMetadata colSchema)	Infer the extended parser from the provided field type.

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

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

Methods inherited from class java.lang.Object

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

Constructor Details

ExtendedTypeFieldFactory

public ExtendedTypeFieldFactory(JsonLoaderImpl loader,
 FieldFactory child)

Method Details

fieldParser

public ElementParser fieldParser(FieldDefn fieldDefn)

Description copied from interface: FieldFactory

Create a parser for a field. The caller will add the field to the parent object. Called only for projected fields. May add a "deferred" undefined field if the value type is undefined. Such fields are added to the underlying row or map at a later time.

scalarParserFor

public ValueParser scalarParserFor(FieldDefn fieldDefn,
 ColumnMetadata colSchema)

Infer the extended parser from the provided field type. The user is required to pick field type consistent with this mapping from their data types. Cannot handle, say, a column which is an int in one row and long in another.

Specified by:

scalarParserFor in interface FieldFactory

Overrides:

scalarParserFor in class BaseFieldFactory