org.apache.avro

Class Resolver.EnumAdjust

java.lang.Object

org.apache.avro.Resolver.Action

org.apache.avro.Resolver.EnumAdjust

Enclosing class:

Resolver

public static class Resolver.EnumAdjust
extends Resolver.Action

Contains information needed to resolve enumerations. When resolving enums, adjustments need to be made in two scenarios: the index for an enum symbol might be different in the reader or writer, or the reader might not have a symbol that was written out for the writer (which is an error, but one we can only detect when decoding data). These adjustments are reflected in the instance variable adjustments. For the symbol with index i in the writer's enum definition, adjustments[i] -- and integer -- contains the adjustment for that symbol. If the integer is positive, then reader also has the symbol and the integer is its index in the reader's schema. If adjustment[i] is negative, then the reader does not have the corresponding symbol (which is the error case). Sometimes there's no adjustments needed: all symbols in the reader have the same index in the reader's and writer's schema. This is a common case, and it allows for some optimization. To signal that this is the case, noAdjustmentsNeeded is set to true.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.avro.Resolver.Action

Resolver.Action.Type

Field Summary

Fields

Modifier and Type	Field and Description
int[]	adjustments
boolean	noAdjustmentsNeeded
Object[]	values

Fields inherited from class org.apache.avro.Resolver.Action

conversion, logicalType, reader, type, writer

Method Summary

Modifier and Type	Method and Description
static Resolver.Action	resolve(Schema w, Schema r, GenericData d) If writer and reader don't have same name, a Resolver.ErrorAction.ErrorType.NAMES_DONT_MATCH is returned, otherwise an appropriate Resolver.EnumAdjust is.

Methods inherited from class java.lang.Object

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

Field Detail

adjustments

public final int[] adjustments

values

public final Object[] values

noAdjustmentsNeeded

public final boolean noAdjustmentsNeeded

Method Detail

resolve

public static Resolver.Action resolve(Schema w,
                                      Schema r,
                                      GenericData d)

If writer and reader don't have same name, a Resolver.ErrorAction.ErrorType.NAMES_DONT_MATCH is returned, otherwise an appropriate Resolver.EnumAdjust is.