co.cask.cdap.internal.io

Class ASMDatumWriterFactory

java.lang.Object

co.cask.cdap.internal.io.ASMDatumWriterFactory

All Implemented Interfaces:

DatumWriterFactory

public final class ASMDatumWriterFactory
extends Object
implements DatumWriterFactory

A factory class for creating DatumWriter instance for different data type and schema. It serves as an in memory cache for generated DatumWriter Class using ASM.

Constructor Summary

Constructors

Constructor and Description
ASMDatumWriterFactory(FieldAccessorFactory fieldAccessorFactory)

Method Summary

Methods

Modifier and Type	Method and Description
<T> DatumWriter<T>	create(com.google.common.reflect.TypeToken<T> type, co.cask.cdap.api.data.schema.Schema schema) Creates a DatumWriter that is able to encode given data type with the given Schema.

Methods inherited from class java.lang.Object

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

Constructor Detail

ASMDatumWriterFactory

@Inject
public ASMDatumWriterFactory(FieldAccessorFactory fieldAccessorFactory)

Method Detail

create

public <T> DatumWriter<T> create(com.google.common.reflect.TypeToken<T> type,
                        co.cask.cdap.api.data.schema.Schema schema)

Creates a DatumWriter that is able to encode given data type with the given Schema. The instance created is thread safe and reusable.

Specified by:

create in interface DatumWriterFactory

Type Parameters:

T - Type of the data type.

Parameters:

type - Type information of the data type to be encoded.

schema - Schema of the data type.

Returns:

A DatumWriter instance.