org.apache.beam.sdk.extensions.protobuf

Class ProtoMessageSchema

java.lang.Object

org.apache.beam.sdk.schemas.GetterBasedSchemaProvider

org.apache.beam.sdk.extensions.protobuf.ProtoMessageSchema

All Implemented Interfaces:

java.io.Serializable, SchemaProvider

@Experimental(value=SCHEMAS)
public class ProtoMessageSchema
extends GetterBasedSchemaProvider

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ProtoMessageSchema()

Method Summary

Modifier and Type	Method and Description
java.util.List<FieldValueGetter>	fieldValueGetters(java.lang.Class<?> targetClass, Schema schema) Implementing class should override to return FieldValueGetters.
java.util.List<FieldValueTypeInformation>	fieldValueTypeInformations(java.lang.Class<?> targetClass, Schema schema) Implementing class should override to return a list of type-informations.
static <T> SimpleFunction<byte[],Row>	getProtoBytesToRowFn(java.lang.Class<T> clazz)
static <T> SimpleFunction<Row,byte[]>	getRowToProtoBytesFn(java.lang.Class<T> clazz)
<T> @Nullable Schema	schemaFor(TypeDescriptor<T> typeDescriptor) Lookup a schema for the given type.
SchemaUserTypeCreator	schemaTypeCreator(java.lang.Class<?> targetClass, Schema schema) Implementing class should override to return a constructor.

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

equals, fromRowFunction, hashCode, toRowFunction

Methods inherited from class java.lang.Object

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

Constructor Detail

ProtoMessageSchema

public ProtoMessageSchema()

Method Detail

schemaFor

public <T> @Nullable Schema schemaFor(TypeDescriptor<T> typeDescriptor)

Description copied from interface: SchemaProvider

Lookup a schema for the given type. If no schema exists, returns null.

fieldValueGetters

public java.util.List<FieldValueGetter> fieldValueGetters(java.lang.Class<?> targetClass,
                                                          Schema schema)

Description copied from class: GetterBasedSchemaProvider

Implementing class should override to return FieldValueGetters.

Specified by:

fieldValueGetters in class GetterBasedSchemaProvider

fieldValueTypeInformations

public java.util.List<FieldValueTypeInformation> fieldValueTypeInformations(java.lang.Class<?> targetClass,
                                                                            Schema schema)

Description copied from class: GetterBasedSchemaProvider

Implementing class should override to return a list of type-informations.

Specified by:

fieldValueTypeInformations in class GetterBasedSchemaProvider

schemaTypeCreator

public SchemaUserTypeCreator schemaTypeCreator(java.lang.Class<?> targetClass,
                                               Schema schema)

Description copied from class: GetterBasedSchemaProvider

Implementing class should override to return a constructor.

Specified by:

schemaTypeCreator in class GetterBasedSchemaProvider

getProtoBytesToRowFn

public static <T> SimpleFunction<byte[],Row> getProtoBytesToRowFn(java.lang.Class<T> clazz)

getRowToProtoBytesFn

public static <T> SimpleFunction<Row,byte[]> getRowToProtoBytesFn(java.lang.Class<T> clazz)