Package org.apache.drill.exec.planner.sql

Class DrillCalciteSqlFunctionWrapper

java.lang.Object
org.apache.calcite.sql.SqlOperator
org.apache.calcite.sql.SqlFunction
org.apache.drill.exec.planner.sql.DrillCalciteSqlFunctionWrapper
All Implemented Interfaces:
DrillCalciteSqlWrapper
public class DrillCalciteSqlFunctionWrapper extends org.apache.calcite.sql.SqlFunction implements DrillCalciteSqlWrapper
This class serves as a wrapper class for SqlFunction. The motivation is to plug-in the return type inference and operand type check algorithms of Drill into Calcite's sql validation procedure. Except for the methods which are relevant to the return type inference and operand type check algorithms, the wrapper simply forwards the method calls to the wrapped SqlFunction.

  • Field Summary

    Fields inherited from class org.apache.calcite.sql.SqlOperator

    kind, MDX_PRECEDENCE, NL

  • Constructor Summary

    Constructors
    Constructor
    Description
    DrillCalciteSqlFunctionWrapper(org.apache.calcite.sql.SqlFunction wrappedFunction, List<DrillFuncHolder> functions)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    argumentMustBeScalar(int ordinal)
     
    boolean
    checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding, boolean throwOnFailure)
     
    org.apache.calcite.rel.type.RelDataType
    deriveType(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.sql.validate.SqlValidatorScope scope, org.apache.calcite.sql.SqlCall call)
     
    String
    getAllowedSignatures(String opNameToUse)
     
    org.apache.calcite.sql.validate.SqlMonotonicity
    getMonotonicity(org.apache.calcite.sql.SqlOperatorBinding call)
     
    org.apache.calcite.sql.SqlOperator
    getOperator()
    Get the wrapped SqlOperator
    List<String>
    getParamNames()
     
    String
    getSignatureTemplate(int operandsCount)
     
    org.apache.calcite.sql.SqlSyntax
    getSyntax()
     
    boolean
    isDeterministic()
     
    boolean
    isDynamicFunction()
     
    boolean
    requiresDecimalExpansion()
     
    org.apache.calcite.sql.SqlNode
    rewriteCall(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.sql.SqlCall call)
     
    String
    toString()
     
    void
    unparse(org.apache.calcite.sql.SqlWriter writer, org.apache.calcite.sql.SqlCall call, int leftPrec, int rightPrec)
     
    boolean
    validRexOperands(int count, org.apache.calcite.util.Litmus litmus)
     

    Methods inherited from class org.apache.calcite.sql.SqlFunction

    getFunctionType, getNameAsId, getParamTypes, getSqlIdentifier, isQuantifierAllowed, validateCall, validateQuantifier

    Methods inherited from class org.apache.calcite.sql.SqlOperator

    acceptCall, acceptCall, adjustType, allowsFraming, checkOperandCount, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, createCall, createCall, createCall, deriveOperandType, equals, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, not, preValidateCall, requiresOrder, requiresOver, reverse, rightPrec, unparseListClause, unparseListClause, validateOperands

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • DrillCalciteSqlFunctionWrapper

      public DrillCalciteSqlFunctionWrapper(org.apache.calcite.sql.SqlFunction wrappedFunction, List<DrillFuncHolder> functions)

  • Method Details

    • rewriteCall

      public org.apache.calcite.sql.SqlNode rewriteCall(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.sql.SqlCall call)
      Overrides:
      rewriteCall in class org.apache.calcite.sql.SqlOperator

    • getOperator

      public org.apache.calcite.sql.SqlOperator getOperator()
      Description copied from interface: DrillCalciteSqlWrapper
      Get the wrapped SqlOperator
      Specified by:
      getOperator in interface DrillCalciteSqlWrapper
      Returns:
      SqlOperator get the wrapped SqlOperator

    • validRexOperands

      public boolean validRexOperands(int count, org.apache.calcite.util.Litmus litmus)
      Overrides:
      validRexOperands in class org.apache.calcite.sql.SqlOperator

    • getAllowedSignatures

      public String getAllowedSignatures(String opNameToUse)
      Overrides:
      getAllowedSignatures in class org.apache.calcite.sql.SqlOperator

    • getMonotonicity

      public org.apache.calcite.sql.validate.SqlMonotonicity getMonotonicity(org.apache.calcite.sql.SqlOperatorBinding call)
      Overrides:
      getMonotonicity in class org.apache.calcite.sql.SqlOperator

    • isDeterministic

      public boolean isDeterministic()
      Overrides:
      isDeterministic in class org.apache.calcite.sql.SqlOperator

    • isDynamicFunction

      public boolean isDynamicFunction()
      Overrides:
      isDynamicFunction in class org.apache.calcite.sql.SqlOperator

    • requiresDecimalExpansion

      public boolean requiresDecimalExpansion()
      Overrides:
      requiresDecimalExpansion in class org.apache.calcite.sql.SqlOperator

    • argumentMustBeScalar

      public boolean argumentMustBeScalar(int ordinal)
      Overrides:
      argumentMustBeScalar in class org.apache.calcite.sql.SqlOperator

    • checkOperandTypes

      public boolean checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding, boolean throwOnFailure)
      Overrides:
      checkOperandTypes in class org.apache.calcite.sql.SqlOperator

    • getSyntax

      public org.apache.calcite.sql.SqlSyntax getSyntax()
      Overrides:
      getSyntax in class org.apache.calcite.sql.SqlFunction

    • getParamNames

      public List<String> getParamNames()
      Overrides:
      getParamNames in class org.apache.calcite.sql.SqlFunction

    • getSignatureTemplate

      public String getSignatureTemplate(int operandsCount)
      Overrides:
      getSignatureTemplate in class org.apache.calcite.sql.SqlOperator

    • deriveType

      public org.apache.calcite.rel.type.RelDataType deriveType(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.sql.validate.SqlValidatorScope scope, org.apache.calcite.sql.SqlCall call)
      Overrides:
      deriveType in class org.apache.calcite.sql.SqlFunction

    • toString

      public String toString()
      Overrides:
      toString in class org.apache.calcite.sql.SqlOperator

    • unparse

      public void unparse(org.apache.calcite.sql.SqlWriter writer, org.apache.calcite.sql.SqlCall call, int leftPrec, int rightPrec)
      Overrides:
      unparse in class org.apache.calcite.sql.SqlFunction