Package org.apache.storm.sql.kafka
Class RecordTranslatorSchemeAdapter
- java.lang.Object
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- org.apache.storm.sql.kafka.RecordTranslatorSchemeAdapter
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- All Implemented Interfaces:
Serializable
,Func<org.apache.kafka.clients.consumer.ConsumerRecord<ByteBuffer,ByteBuffer>,List<Object>>
,RecordTranslator<ByteBuffer,ByteBuffer>
public class RecordTranslatorSchemeAdapter extends Object implements RecordTranslator<ByteBuffer,ByteBuffer>
RecordTranslator that delegates to a Scheme.- See Also:
- Serialized Form
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Field Summary
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Fields inherited from interface org.apache.storm.kafka.spout.RecordTranslator
DEFAULT_STREAM
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Constructor Summary
Constructors Constructor Description RecordTranslatorSchemeAdapter(Scheme delegate)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description List<Object>
apply(org.apache.kafka.clients.consumer.ConsumerRecord<ByteBuffer,ByteBuffer> record)
Translate the ConsumerRecord into a list of objects that can be emitted.Fields
getFieldsFor(String stream)
Get the fields associated with a stream.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.storm.kafka.spout.RecordTranslator
streams
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Constructor Detail
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RecordTranslatorSchemeAdapter
public RecordTranslatorSchemeAdapter(Scheme delegate)
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Method Detail
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apply
public List<Object> apply(org.apache.kafka.clients.consumer.ConsumerRecord<ByteBuffer,ByteBuffer> record)
Description copied from interface:RecordTranslator
Translate the ConsumerRecord into a list of objects that can be emitted.- Specified by:
apply
in interfaceFunc<org.apache.kafka.clients.consumer.ConsumerRecord<ByteBuffer,ByteBuffer>,List<Object>>
- Specified by:
apply
in interfaceRecordTranslator<ByteBuffer,ByteBuffer>
- Parameters:
record
- the record to translate- Returns:
- the objects in the tuple. Return a
KafkaTuple
if you want to route the tuple to a non-default stream. Returnnull
to discard an invalidConsumerRecord
ifKafkaSpoutConfig.Builder.setEmitNullTuples(boolean)
is set tofalse
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getFieldsFor
public Fields getFieldsFor(String stream)
Description copied from interface:RecordTranslator
Get the fields associated with a stream. The streams passed in are returned by theRecordTranslator.streams()
method.- Specified by:
getFieldsFor
in interfaceRecordTranslator<ByteBuffer,ByteBuffer>
- Parameters:
stream
- the stream the fields are for- Returns:
- the fields for that stream.
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