org.apache.hudi.avro

Class AvroSchemaUtils

java.lang.Object

org.apache.hudi.avro.AvroSchemaUtils

public class AvroSchemaUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static org.apache.avro.Schema	appendFieldsToSchema(org.apache.avro.Schema schema, List<org.apache.avro.Schema.Field> newFields) Appends provided new fields at the end of the given schema NOTE: No deduplication is made, this method simply appends fields at the end of the list of the source schema as is
static boolean	containsFieldInSchema(org.apache.avro.Schema schema, String fieldName) Returns true in case when schema contains the field w/ provided name
static org.apache.avro.Schema	createNullableSchema(org.apache.avro.Schema.Type avroType) Creates schema following Avro's typical nullable schema definition: Union(Schema.Type.NULL, <NonNullType>), wrapping around provided target non-null type
static boolean	isNullable(org.apache.avro.Schema schema) Returns true in case provided Schema is nullable (ie accepting null values), returns false otherwise
static org.apache.avro.Schema	resolveNullableSchema(org.apache.avro.Schema schema) Resolves typical Avro's nullable schema definition: Union(Schema.Type.NULL, <NonNullType>), decomposing union and returning the target non-null type
static org.apache.avro.Schema	resolveUnionSchema(org.apache.avro.Schema schema, String fieldSchemaFullName) Passed in Union schema and will try to resolve the field with the fieldSchemaFullName w/in the union returning its corresponding schema

Methods inherited from class java.lang.Object

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

Method Detail

appendFieldsToSchema

public static org.apache.avro.Schema appendFieldsToSchema(org.apache.avro.Schema schema,
                                                          List<org.apache.avro.Schema.Field> newFields)

Appends provided new fields at the end of the given schema NOTE: No deduplication is made, this method simply appends fields at the end of the list of the source schema as is

resolveUnionSchema

public static org.apache.avro.Schema resolveUnionSchema(org.apache.avro.Schema schema,
                                                        String fieldSchemaFullName)

Passed in Union schema and will try to resolve the field with the fieldSchemaFullName w/in the union returning its corresponding schema

Parameters:

schema - target schema to be inspected

fieldSchemaFullName - target field-name to be looked up w/in the union

Returns:

schema of the field w/in the union identified by the fieldSchemaFullName

isNullable

public static boolean isNullable(org.apache.avro.Schema schema)

Returns true in case provided Schema is nullable (ie accepting null values), returns false otherwise

resolveNullableSchema

public static org.apache.avro.Schema resolveNullableSchema(org.apache.avro.Schema schema)

Resolves typical Avro's nullable schema definition: Union(Schema.Type.NULL, <NonNullType>), decomposing union and returning the target non-null type

createNullableSchema

public static org.apache.avro.Schema createNullableSchema(org.apache.avro.Schema.Type avroType)

Creates schema following Avro's typical nullable schema definition: Union(Schema.Type.NULL, <NonNullType>), wrapping around provided target non-null type

containsFieldInSchema

public static boolean containsFieldInSchema(org.apache.avro.Schema schema,
                                            String fieldName)

Returns true in case when schema contains the field w/ provided name