Package org.apache.arrow.vector.validate

Class MetadataV4UnionChecker

java.lang.Object

org.apache.arrow.vector.validate.MetadataV4UnionChecker

public final class MetadataV4UnionChecker
extends Object

Given a field, checks that no Union fields are present.

This is intended to be used to prevent unions from being read/written with V4 metadata.

Constructor Summary

Constructors

Constructor	Description
MetadataV4UnionChecker()

Method Summary

Modifier and Type	Method	Description
static void	checkForUnion(Iterator<Field> fields, MetadataVersion metadataVersion)	Check the schema, raising an error if an unsupported feature is used (e.g.
static void	checkRead(Schema schema, MetadataVersion metadataVersion)	Check the schema, raising an error if an unsupported feature is used (e.g.

Methods inherited from class java.lang.Object

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

Constructor Details

MetadataV4UnionChecker

public MetadataV4UnionChecker()

Method Details

checkForUnion

public static void checkForUnion(Iterator<Field> fields,
 MetadataVersion metadataVersion)

Check the schema, raising an error if an unsupported feature is used (e.g. unions with < V5 metadata).

checkRead

public static void checkRead(Schema schema,
 MetadataVersion metadataVersion)
                      throws IOException

Check the schema, raising an error if an unsupported feature is used (e.g. unions with < V5 metadata).

Throws:

IOException