Module org.apache.arrow.vector

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. unions with < V5 metadata).
static void	checkRead(Schema schema, MetadataVersion metadataVersion)	Check the schema, raising an error if an unsupported feature is used (e.g. unions with < V5 metadata).

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