Package org.apache.iceberg.orc

Class OrcSchemaVisitor<T>

java.lang.Object

org.apache.iceberg.orc.OrcSchemaVisitor<T>

Direct Known Subclasses:

EstimateOrcAvgWidthVisitor

public abstract class OrcSchemaVisitor<T>
extends Object

Generic visitor of an ORC Schema.

Constructor Summary

Constructors

Constructor	Description
OrcSchemaVisitor()

Method Summary

Modifier and Type	Method	Description
void	afterElementField(org.apache.orc.TypeDescription element)
void	afterField(String name, org.apache.orc.TypeDescription type)
void	afterKeyField(org.apache.orc.TypeDescription key)
void	afterValueField(org.apache.orc.TypeDescription value)
void	beforeElementField(org.apache.orc.TypeDescription element)
void	beforeField(String name, org.apache.orc.TypeDescription type)
void	beforeKeyField(org.apache.orc.TypeDescription key)
void	beforeValueField(org.apache.orc.TypeDescription value)
String	currentFieldName()
protected String[]	currentPath()
String	elementName()
String	keyName()
T	list(org.apache.orc.TypeDescription array, T element)
T	map(org.apache.orc.TypeDescription map, T key, T value)
protected String[]	path(String name)
T	primitive(org.apache.orc.TypeDescription primitive)
T	record(org.apache.orc.TypeDescription record, List<String> names, List<T> fields)
String	valueName()
T	variant(org.apache.orc.TypeDescription variant, T metadata, T value)
static <T> T	visit(org.apache.orc.TypeDescription schema, OrcSchemaVisitor<T> visitor)
static <T> List<T>	visitSchema(org.apache.orc.TypeDescription schema, OrcSchemaVisitor<T> visitor)

Methods inherited from class java.lang.Object

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

Constructor Details

OrcSchemaVisitor

public OrcSchemaVisitor()

Method Details

visitSchema

public static <T> List<T> visitSchema(org.apache.orc.TypeDescription schema,
 OrcSchemaVisitor<T> visitor)

visit

public static <T> T visit(org.apache.orc.TypeDescription schema,
 OrcSchemaVisitor<T> visitor)

elementName

public String elementName()

keyName

public String keyName()

valueName

public String valueName()

currentFieldName

public String currentFieldName()

beforeField

public void beforeField(String name,
 org.apache.orc.TypeDescription type)

afterField

public void afterField(String name,
 org.apache.orc.TypeDescription type)

beforeElementField

public void beforeElementField(org.apache.orc.TypeDescription element)

afterElementField

public void afterElementField(org.apache.orc.TypeDescription element)

beforeKeyField

public void beforeKeyField(org.apache.orc.TypeDescription key)

afterKeyField

public void afterKeyField(org.apache.orc.TypeDescription key)

beforeValueField

public void beforeValueField(org.apache.orc.TypeDescription value)

afterValueField

public void afterValueField(org.apache.orc.TypeDescription value)

record

public T record(org.apache.orc.TypeDescription record,
 List<String> names,
 List<T> fields)

list

public T list(org.apache.orc.TypeDescription array,
 T element)

map

public T map(org.apache.orc.TypeDescription map,
 T key,
 T value)

variant

public T variant(org.apache.orc.TypeDescription variant,
 T metadata,
 T value)

primitive

public T primitive(org.apache.orc.TypeDescription primitive)

currentPath

protected String[] currentPath()

path

protected String[] path(String name)