org.apache.flink.table.planner.connectors

Class DynamicSinkUtils

java.lang.Object

org.apache.flink.table.planner.connectors.DynamicSinkUtils

@Internal
public final class DynamicSinkUtils
extends Object

Utilities for dealing with DynamicTableSink.

Method Summary

Modifier and Type	Method and Description
static org.apache.calcite.rel.RelNode	convertCollectToRel(FlinkRelBuilder relBuilder, org.apache.calcite.rel.RelNode input, org.apache.flink.table.operations.CollectModifyOperation collectModifyOperation, org.apache.flink.configuration.ReadableConfig configuration, ClassLoader classLoader) Converts an TableResult.collect() sink to a RelNode.
static org.apache.calcite.rel.RelNode	convertExternalToRel(FlinkRelBuilder relBuilder, org.apache.calcite.rel.RelNode input, org.apache.flink.table.operations.ExternalModifyOperation externalModifyOperation) Converts an external sink (i.e.
static org.apache.calcite.rel.RelNode	convertSinkToRel(FlinkRelBuilder relBuilder, org.apache.calcite.rel.RelNode input, org.apache.flink.table.operations.SinkModifyOperation sinkModifyOperation, org.apache.flink.table.connector.sink.DynamicTableSink sink) Converts a given DynamicTableSink to a RelNode.
static org.apache.calcite.rel.RelNode	validateSchemaAndApplyImplicitCast(org.apache.calcite.rel.RelNode query, org.apache.flink.table.catalog.ResolvedSchema sinkSchema, String tableDebugName, org.apache.flink.table.catalog.DataTypeFactory dataTypeFactory, org.apache.flink.table.planner.calcite.FlinkTypeFactory typeFactory) Checks if the given query can be written into the given sink's table schema.

Methods inherited from class java.lang.Object

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

Method Detail

convertCollectToRel

public static org.apache.calcite.rel.RelNode convertCollectToRel(FlinkRelBuilder relBuilder,
                                                                 org.apache.calcite.rel.RelNode input,
                                                                 org.apache.flink.table.operations.CollectModifyOperation collectModifyOperation,
                                                                 org.apache.flink.configuration.ReadableConfig configuration,
                                                                 ClassLoader classLoader)

Converts an TableResult.collect() sink to a RelNode.

convertExternalToRel

public static org.apache.calcite.rel.RelNode convertExternalToRel(FlinkRelBuilder relBuilder,
                                                                  org.apache.calcite.rel.RelNode input,
                                                                  org.apache.flink.table.operations.ExternalModifyOperation externalModifyOperation)

Converts an external sink (i.e. further DataStream transformations) to a RelNode.

convertSinkToRel

public static org.apache.calcite.rel.RelNode convertSinkToRel(FlinkRelBuilder relBuilder,
                                                              org.apache.calcite.rel.RelNode input,
                                                              org.apache.flink.table.operations.SinkModifyOperation sinkModifyOperation,
                                                              org.apache.flink.table.connector.sink.DynamicTableSink sink)

Converts a given DynamicTableSink to a RelNode. It adds helper projections if necessary.

validateSchemaAndApplyImplicitCast

public static org.apache.calcite.rel.RelNode validateSchemaAndApplyImplicitCast(org.apache.calcite.rel.RelNode query,
                                                                                org.apache.flink.table.catalog.ResolvedSchema sinkSchema,
                                                                                String tableDebugName,
                                                                                org.apache.flink.table.catalog.DataTypeFactory dataTypeFactory,
                                                                                org.apache.flink.table.planner.calcite.FlinkTypeFactory typeFactory)

Checks if the given query can be written into the given sink's table schema.

It checks whether field types are compatible (types should be equal including precisions). If types are not compatible, but can be implicitly cast, a cast projection will be applied. Otherwise, an exception will be thrown.