org.apache.flink.table.api.internal

Class StaticResultProvider

java.lang.Object

org.apache.flink.table.api.internal.StaticResultProvider

All Implemented Interfaces:

ResultProvider

@Internal
public class StaticResultProvider
extends Object
implements ResultProvider

Create result provider from a static set of data using external types.

Field Summary

Fields

Modifier and Type	Field and Description
static RowDataToStringConverter	SIMPLE_ROW_DATA_TO_STRING_CONVERTER This converter supports only String, long, int and boolean fields.

Constructor Summary

Constructors

Constructor and Description
StaticResultProvider(List<Row> rows)
StaticResultProvider(List<Row> rows, java.util.function.Function<Row,RowData> externalToInternalConverter)

Method Summary

Modifier and Type	Method and Description
RowDataToStringConverter	getRowDataStringConverter()
boolean	isFirstRowReady() Return true if the first row is ready.
StaticResultProvider	setJobClient(JobClient jobClient) Set the job client associated with the select job to retrieve the result.
CloseableIterator<Row>	toExternalIterator() Returns the select result as row iterator using external data types.
CloseableIterator<RowData>	toInternalIterator() Returns the select result as row iterator using internal data types.

Methods inherited from class java.lang.Object

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

Field Detail

SIMPLE_ROW_DATA_TO_STRING_CONVERTER

public static final RowDataToStringConverter SIMPLE_ROW_DATA_TO_STRING_CONVERTER

This converter supports only String, long, int and boolean fields. Moreover, this converter works only with GenericRowData.

Constructor Detail

StaticResultProvider

public StaticResultProvider(List<Row> rows)

StaticResultProvider

public StaticResultProvider(List<Row> rows,
                            java.util.function.Function<Row,RowData> externalToInternalConverter)

Method Detail

setJobClient

public StaticResultProvider setJobClient(JobClient jobClient)

Description copied from interface: ResultProvider

Set the job client associated with the select job to retrieve the result.

Specified by:

setJobClient in interface ResultProvider

toInternalIterator

public CloseableIterator<RowData> toInternalIterator()

Description copied from interface: ResultProvider

Returns the select result as row iterator using internal data types. You must not invoke this method after invoking ResultProvider.toExternalIterator().

Specified by:

toInternalIterator in interface ResultProvider

toExternalIterator

public CloseableIterator<Row> toExternalIterator()

Description copied from interface: ResultProvider

Returns the select result as row iterator using external data types. You must not invoke this method after invoking ResultProvider.toInternalIterator().

Specified by:

toExternalIterator in interface ResultProvider

getRowDataStringConverter

public RowDataToStringConverter getRowDataStringConverter()

Specified by:

getRowDataStringConverter in interface ResultProvider

isFirstRowReady

public boolean isFirstRowReady()

Description copied from interface: ResultProvider

Return true if the first row is ready.

The first row is ready when Iterator.hasNext() method returns true or Iterator.next() method returns a row.

Specified by:

isFirstRowReady in interface ResultProvider