org.apache.flink.table.temptable.FlinkTableServiceSource.scala Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.flink.table.temptable
import org.apache.flink.streaming.api.datastream.DataStream
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment
import org.apache.flink.table.api.{TableEnvironment, TableSchema}
import org.apache.flink.table.dataformat.BaseRow
import org.apache.flink.table.sources.{BatchTableSource, StreamTableSource}
import org.apache.flink.table.temptable.io.TableServiceSourceFunction
import org.apache.flink.table.temptable.util.TableServiceUtil
import org.apache.flink.table.types.{DataType, RowType, TypeConverters}
import org.apache.flink.table.util.{TableProperties, TableSchemaUtil}
class FlinkTableServiceSource(
tableEnv: TableEnvironment,
tableProperties: TableProperties,
tableName: String,
resultType: RowType) extends BatchTableSource[BaseRow] with StreamTableSource[BaseRow] {
override def getBoundedStream(streamEnv: StreamExecutionEnvironment): DataStream[BaseRow] = {
TableServiceUtil.injectTableServiceInstances(
tableEnv.tableServiceManager.getTableServiceInstance(), tableProperties)
streamEnv.addSource(
new TableServiceSourceFunction(
tableProperties,
tableName,
resultType)
).returns(
TypeConverters.toBaseRowTypeInfo(resultType)
)
}
override def getDataStream(execEnv: StreamExecutionEnvironment): DataStream[BaseRow] = {
TableServiceUtil.injectTableServiceInstances(
tableEnv.tableServiceManager.getTableServiceInstance(), tableProperties)
execEnv.addSource(new TableServiceSourceFunction(
tableProperties,
tableName,
resultType)
).returns(
TypeConverters.toBaseRowTypeInfo(resultType)
)
}
override def getReturnType: DataType = resultType
override def getTableSchema: TableSchema = TableSchemaUtil.fromDataType(resultType)
}