org.apache.beam.sdk.io.aws2.schemas

Class AwsSchemaProvider

java.lang.Object

org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

org.apache.beam.sdk.io.aws2.schemas.AwsSchemaProvider

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.schemas.SchemaProvider

public class AwsSchemaProvider
extends org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

Schema provider for AWS SdkPojo models using the provided field metadata (@see SdkPojo.sdkFields()) rather than reflection.

Note: Beam doesn't support self-referential schemas. Some AWS models are not compatible with schemas for that reason and require a dedicated coder, such as DynamoDB AttributeValue (coder).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AwsSchemaProvider()

Method Summary

Modifier and Type	Method and Description
java.util.List<org.apache.beam.sdk.schemas.FieldValueGetter>	fieldValueGetters(java.lang.Class<?> clazz, org.apache.beam.sdk.schemas.Schema schema)
java.util.List<org.apache.beam.sdk.schemas.FieldValueTypeInformation>	fieldValueTypeInformations(java.lang.Class<?> cls, org.apache.beam.sdk.schemas.Schema schema)
<T> org.apache.beam.sdk.transforms.SerializableFunction<org.apache.beam.sdk.values.Row,T>	fromRowFunction(org.apache.beam.sdk.values.TypeDescriptor<T> type)
<T> @Nullable org.apache.beam.sdk.schemas.Schema	schemaFor(org.apache.beam.sdk.values.TypeDescriptor<T> type)
org.apache.beam.sdk.schemas.SchemaUserTypeCreator	schemaTypeCreator(java.lang.Class<?> cls, org.apache.beam.sdk.schemas.Schema schema)

Methods inherited from class org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

equals, hashCode, toRowFunction

Methods inherited from class java.lang.Object

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

Constructor Detail

AwsSchemaProvider

public AwsSchemaProvider()

Method Detail

schemaFor

public <T> @Nullable org.apache.beam.sdk.schemas.Schema schemaFor(org.apache.beam.sdk.values.TypeDescriptor<T> type)

fieldValueGetters

public java.util.List<org.apache.beam.sdk.schemas.FieldValueGetter> fieldValueGetters(java.lang.Class<?> clazz,
                                                                                      org.apache.beam.sdk.schemas.Schema schema)

Specified by:

fieldValueGetters in class org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

fromRowFunction

public <T> org.apache.beam.sdk.transforms.SerializableFunction<org.apache.beam.sdk.values.Row,T> fromRowFunction(org.apache.beam.sdk.values.TypeDescriptor<T> type)

Specified by:

fromRowFunction in interface org.apache.beam.sdk.schemas.SchemaProvider

Overrides:

fromRowFunction in class org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

fieldValueTypeInformations

public java.util.List<org.apache.beam.sdk.schemas.FieldValueTypeInformation> fieldValueTypeInformations(java.lang.Class<?> cls,
                                                                                                        org.apache.beam.sdk.schemas.Schema schema)

Specified by:

fieldValueTypeInformations in class org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

schemaTypeCreator

public org.apache.beam.sdk.schemas.SchemaUserTypeCreator schemaTypeCreator(java.lang.Class<?> cls,
                                                                           org.apache.beam.sdk.schemas.Schema schema)

Specified by:

schemaTypeCreator in class org.apache.beam.sdk.schemas.GetterBasedSchemaProvider