org.apache.flink.formats.avro.typeutils

类 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>

所有已实现的接口:

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.

另请参阅:

序列化表格

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.api.java.typeutils.PojoTypeInfo

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

从类继承的嵌套类/接口 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>

构造器概要

构造器

构造器和说明
AvroTypeInfo(Class<T> typeClass) Creates a new Avro type info for the given class.

方法概要

限定符和类型	方法和说明
org.apache.flink.api.common.typeutils.TypeSerializer<T>	createSerializer(org.apache.flink.api.common.ExecutionConfig config)

从类继承的方法 org.apache.flink.api.java.typeutils.PojoTypeInfo

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

从类继承的方法 org.apache.flink.api.common.typeutils.CompositeType

createComparator, getFlatFields, getTypeClass, hasDeterministicFieldOrder, hasField, isKeyType

从类继承的方法 org.apache.flink.api.common.typeinfo.TypeInformation

getGenericParameters, of, of

从类继承的方法 java.lang.Object

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

构造器详细资料

AvroTypeInfo

public AvroTypeInfo(Class<T> typeClass)

Creates a new Avro type info for the given class.

方法详细资料

createSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<T> createSerializer(org.apache.flink.api.common.ExecutionConfig config)

覆盖:

createSerializer 在类中 org.apache.flink.api.java.typeutils.PojoTypeInfo<T extends org.apache.avro.specific.SpecificRecordBase>