Package org.apache.flink.table.planner.plan.rules.physical.stream

Class StreamPhysicalConstantTableFunctionScanRule

java.lang.Object
org.apache.calcite.plan.RelOptRule
org.apache.calcite.plan.RelRule<StreamPhysicalConstantTableFunctionScanRule.StreamPhysicalConstantTableFunctionScanRuleConfig>
org.apache.flink.table.planner.plan.rules.physical.stream.StreamPhysicalConstantTableFunctionScanRule
@Enclosing public class StreamPhysicalConstantTableFunctionScanRule extends org.apache.calcite.plan.RelRule<StreamPhysicalConstantTableFunctionScanRule.StreamPhysicalConstantTableFunctionScanRuleConfig>
Converts FlinkLogicalTableFunctionScan with constant RexCall. To 
                           StreamPhysicalCorrelate
                              /                     \
       empty StreamPhysicalValues  FlinkLogicalTableFunctionScan

Add the rule to support select from a UDF directly, such as the following SQL: SELECT * FROM LATERAL TABLE(func()) as T(c)

Note: @{link StreamPhysicalCorrelateRule} is responsible for converting a reasonable physical plan for the normal correlate query, such as the following SQL: example1: SELECT * FROM T, LATERAL TABLE(func()) as T(c) example2: SELECT a, c FROM T, LATERAL TABLE(func(a)) as T(c)

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static interface 
    StreamPhysicalConstantTableFunctionScanRule.StreamPhysicalConstantTableFunctionScanRuleConfig
    Configuration for StreamPhysicalConstantTableFunctionScanRule.

    Nested classes/interfaces inherited from class org.apache.calcite.plan.RelRule

    org.apache.calcite.plan.RelRule.Config, org.apache.calcite.plan.RelRule.Done, org.apache.calcite.plan.RelRule.MatchHandler<R extends org.apache.calcite.plan.RelOptRule>, org.apache.calcite.plan.RelRule.OperandBuilder, org.apache.calcite.plan.RelRule.OperandDetailBuilder<R extends org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelRule.OperandTransform

    Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

    org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final StreamPhysicalConstantTableFunctionScanRule
    INSTANCE
     

    Fields inherited from class org.apache.calcite.plan.RelRule

    config

    Fields inherited from class org.apache.calcite.plan.RelOptRule

    description, operands, relBuilderFactory

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    StreamPhysicalConstantTableFunctionScanRule(StreamPhysicalConstantTableFunctionScanRule.StreamPhysicalConstantTableFunctionScanRuleConfig config)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    matches(org.apache.calcite.plan.RelOptRuleCall call)
     
    void
    onMatch(org.apache.calcite.plan.RelOptRuleCall call)
     

    Methods inherited from class org.apache.calcite.plan.RelOptRule

    any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait