org.apache.flink.table.api

Interface Explainable<SELF extends Explainable<SELF>>

All Known Subinterfaces:

CompiledPlan, StatementSet, Table, TablePipeline

All Known Implementing Classes:

StatementSetImpl, TableImpl

@PublicEvolving
public interface Explainable<SELF extends Explainable<SELF>>

Represents an artifact that can be explained using a summary string.

See Also:

explain(ExplainDetail...)

Method Summary

Modifier and Type	Method and Description
default String	explain(ExplainDetail... extraDetails) Returns the AST of this object and the execution plan to compute the result of the given statement.
String	explain(ExplainFormat format, ExplainDetail... extraDetails) Returns the AST of this object and the execution plan to compute the result of the given statement.
default SELF	printExplain(ExplainDetail... extraDetails) Like explain(ExplainDetail...), but piping the result to System.out.

Method Detail

explain

default String explain(ExplainDetail... extraDetails)

Returns the AST of this object and the execution plan to compute the result of the given statement.

Parameters:

extraDetails - The extra explain details which the result of this method should include, e.g. estimated cost, changelog mode for streaming

Returns:

AST and the execution plan.

explain

String explain(ExplainFormat format,
               ExplainDetail... extraDetails)

Returns the AST of this object and the execution plan to compute the result of the given statement.

Parameters:

format - The output format of explained plan

extraDetails - The extra explain details which the result of this method should include, e.g. estimated cost, changelog mode for streaming

Returns:

AST and the execution plan.

printExplain

default SELF printExplain(ExplainDetail... extraDetails)

Like explain(ExplainDetail...), but piping the result to System.out.