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 org.apache.flink.table.utils.print.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<org.apache.flink.types.Row> rows)
StaticResultProvider(List<org.apache.flink.types.Row> rows, java.util.function.Function<org.apache.flink.types.Row,org.apache.flink.table.data.RowData> externalToInternalConverter)

Method Summary

Modifier and Type	Method and Description
org.apache.flink.table.utils.print.RowDataToStringConverter	getRowDataStringConverter()
boolean	isFirstRowReady() Return true if the first row is ready.
StaticResultProvider	setJobClient(org.apache.flink.core.execution.JobClient jobClient) Set the job client associated with the select job to retrieve the result.
org.apache.flink.util.CloseableIterator<org.apache.flink.types.Row>	toExternalIterator() Returns the select result as row iterator using external data types.
org.apache.flink.util.CloseableIterator<org.apache.flink.table.data.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 org.apache.flink.table.utils.print.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<org.apache.flink.types.Row> rows)

StaticResultProvider

public StaticResultProvider(List<org.apache.flink.types.Row> rows,
                            java.util.function.Function<org.apache.flink.types.Row,org.apache.flink.table.data.RowData> externalToInternalConverter)

Method Detail

setJobClient

public StaticResultProvider setJobClient(org.apache.flink.core.execution.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 org.apache.flink.util.CloseableIterator<org.apache.flink.table.data.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 org.apache.flink.util.CloseableIterator<org.apache.flink.types.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 org.apache.flink.table.utils.print.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