Package org.apache.flink.formats.avro.typeutils

Class AvroTypeInfo<T extends org.apache.avro.specific.SpecificRecordBase>

java.lang.Object
org.apache.flink.api.common.typeinfo.TypeInformation<T>
org.apache.flink.api.common.typeutils.CompositeType<T>
org.apache.flink.api.java.typeutils.PojoTypeInfo<T>
org.apache.flink.formats.avro.typeutils.AvroTypeInfo<T>
All Implemented Interfaces:
Serializable
public class AvroTypeInfo<T extends org.apache.avro.specific.SpecificRecordBase> extends org.apache.flink.api.java.typeutils.PojoTypeInfo<T>
Special type information to generate a special AvroTypeInfo for Avro POJOs (implementing SpecificRecordBase, the typed Avro POJOs)

Proceeding: It uses a regular pojo type analysis and replaces all GenericType<CharSequence> with a GenericType<avro.Utf8>. All other types used by Avro are standard Java types. Only strings are represented as CharSequence fields and represented as Utf8 classes at runtime. CharSequence is not comparable. To make them nicely usable with field expressions, we replace them here by generic type infos containing Utf8 classes (which are comparable),

This class is checked by the AvroPojoTest.

See Also:

  • Nested Class Summary

    Nested classes/interfaces inherited from class org.apache.flink.api.java.typeutils.PojoTypeInfo

    org.apache.flink.api.java.typeutils.PojoTypeInfo.NamedFlatFieldDescriptor

    Nested classes/interfaces inherited from class org.apache.flink.api.common.typeutils.CompositeType

    org.apache.flink.api.common.typeutils.CompositeType.FlatFieldDescriptor, org.apache.flink.api.common.typeutils.CompositeType.InvalidFieldReferenceException, org.apache.flink.api.common.typeutils.CompositeType.TypeComparatorBuilder<T extends Object>

  • Constructor Summary

    Constructors
    Constructor
    Description
    AvroTypeInfo(Class<T> typeClass)
    Creates a new Avro type info for the given class.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.apache.flink.api.common.typeutils.TypeSerializer<T>
    createSerializer(org.apache.flink.api.common.serialization.SerializerConfig config)
     

    Methods inherited from class org.apache.flink.api.java.typeutils.PojoTypeInfo

    canEqual, createPojoSerializer, createTypeComparatorBuilder, equals, getArity, getFieldIndex, getFieldNames, getFlatFields, getPojoFieldAt, getTotalFields, getTypeAt, getTypeAt, hashCode, isBasicType, isSortKeyType, isTupleType, toString

    Methods inherited from class org.apache.flink.api.common.typeutils.CompositeType

    createComparator, getFlatFields, getTypeClass, hasDeterministicFieldOrder, hasField, isKeyType

    Methods inherited from class org.apache.flink.api.common.typeinfo.TypeInformation

    getGenericParameters, of, of

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • AvroTypeInfo

      public AvroTypeInfo(Class<T> typeClass)
      Creates a new Avro type info for the given class.

  • Method Details

    • createSerializer

      public org.apache.flink.api.common.typeutils.TypeSerializer<T> createSerializer(org.apache.flink.api.common.serialization.SerializerConfig config)
      Overrides:
      createSerializer in class org.apache.flink.api.java.typeutils.PojoTypeInfo<T extends org.apache.avro.specific.SpecificRecordBase>