Package com.twilio.kudu.sql.rules

Class RowValueExpressionConverter

java.lang.Object
org.apache.calcite.rex.RexShuttle
com.twilio.kudu.sql.rules.RowValueExpressionConverter
All Implemented Interfaces:
org.apache.calcite.rex.RexVisitor<org.apache.calcite.rex.RexNode>
public class RowValueExpressionConverter extends org.apache.calcite.rex.RexShuttle
Used to paginate through rows in the order of the primary key columns by comparing row expressions with a greater than operator If the the PK of the table is (A asc, B asc, C asc) (A, B, C) > ('a1', 'b1', * 'c1') is transformed to (A > 'a1') OR ((A = 'a1') AND (B > 'b1')) OR ((A = 'a1') AND (B = 'b1') AND (C > 'c1')) If the the PK of the table is (A asc, B desc, C asc) (A, B, C) > ('a1', 'b1', 'c1') is transformed to (A > 'a1') OR ((A = 'a1') AND (B < 'b1')) OR ((A = 'a1') AND (B = 'b1') AND (C > 'c1')) This implementation is different from the SQL-92 standard see https://stackoverflow.com/questions/32981903/sql-syntax-term-for-where-col1-col2-val1-val2/32982077#32982077

  • Constructor Summary

    Constructors
    Constructor
    Description
    RowValueExpressionConverter(org.apache.calcite.rex.RexBuilder rexBuilder, CalciteKuduTable calciteKuduTable)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    org.apache.calcite.rex.RexNode
    visitCall(org.apache.calcite.rex.RexCall call)
     

    Methods inherited from class org.apache.calcite.rex.RexShuttle

    apply, apply, mutate, visitArray, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitFieldCollations, visitInputRef, visitList, visitLiteral, visitLocalRef, visitOver, visitPatternFieldRef, visitRangeRef, visitSubQuery, visitTableInputRef, visitWindow

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface org.apache.calcite.rex.RexVisitor

    visitEach, visitList, visitList

  • Constructor Details

    • RowValueExpressionConverter

      public RowValueExpressionConverter(org.apache.calcite.rex.RexBuilder rexBuilder, CalciteKuduTable calciteKuduTable)

  • Method Details

    • visitCall

      public org.apache.calcite.rex.RexNode visitCall(org.apache.calcite.rex.RexCall call)
      Specified by:
      visitCall in interface org.apache.calcite.rex.RexVisitor<org.apache.calcite.rex.RexNode>
      Overrides:
      visitCall in class org.apache.calcite.rex.RexShuttle