Package org.apache.flink.table.planner.plan.rules.logical

Class ProjectWatermarkAssignerTransposeRule

java.lang.Object
org.apache.calcite.plan.RelOptRule
org.apache.flink.table.planner.plan.rules.logical.ProjectWatermarkAssignerTransposeRule
public class ProjectWatermarkAssignerTransposeRule extends org.apache.calcite.plan.RelOptRule
Transpose between the LogicalWatermarkAssigner and LogicalProject. The transposed LogicalProject works like a pruner to prune the unused fields from source. The top level LogicalProject still has to do the calculation, filter and prune the rowtime column if the query doesn't need.

NOTES: Currently the rule doesn't support nested projection push down.

  • Nested Class Summary

    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 ProjectWatermarkAssignerTransposeRule
    INSTANCE
     

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

    description, operands, relBuilderFactory

  • Constructor Summary

    Constructors
    Constructor
    Description
    ProjectWatermarkAssignerTransposeRule()
     

  • 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

  • Field Details

  • Constructor Details

    • ProjectWatermarkAssignerTransposeRule

      public ProjectWatermarkAssignerTransposeRule()

  • Method Details

    • matches

      public boolean matches(org.apache.calcite.plan.RelOptRuleCall call)
      Overrides:
      matches in class org.apache.calcite.plan.RelOptRule

    • onMatch

      public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)
      Specified by:
      onMatch in class org.apache.calcite.plan.RelOptRule