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[BAHIR-256] Fix ClassCastException in sql-streaming-mqtt #100

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[BAHIR-256] Fix ClassCastException in sql-streaming-mqtt #100

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10 changes: 8 additions & 2 deletions sql-streaming-mqtt/src/main/scala/org/apache/bahir/sql/streaming/mqtt/MQTTStreamSource.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -33,11 +33,13 @@ import org.eclipse.paho.client.mqttv3._

import org.apache.spark.sql._
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.util.DateTimeUtils
import org.apache.spark.sql.sources.DataSourceRegister
import org.apache.spark.sql.sources.v2.{DataSourceOptions, DataSourceV2, MicroBatchReadSupport}
import org.apache.spark.sql.sources.v2.reader.{InputPartition, InputPartitionReader}
import org.apache.spark.sql.sources.v2.reader.streaming.{MicroBatchReader, Offset => OffsetV2}
import org.apache.spark.sql.types._
import org.apache.spark.unsafe.types.UTF8String

import org.apache.bahir.utils.Logging

Expand Down Expand Up @@ -199,8 +201,12 @@ class MQTTStreamSource(options: DataSourceOptions, brokerUrl: String, persistenc
}

override def get(): InternalRow = {
InternalRow(slice(currentIdx).id, slice(currentIdx).topic,
slice(currentIdx).payload, slice(currentIdx).timestamp)
InternalRow(
slice(currentIdx).id,
UTF8String.fromString(slice(currentIdx).topic),
slice(currentIdx).payload,
DateTimeUtils.fromJavaTimestamp(slice(currentIdx).timestamp)
)
}

override def close(): Unit = {}
Expand Down