org.apache.drill.exec.planner.sql

Class DrillCalciteSqlOperatorWrapper

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.drill.exec.planner.sql.DrillCalciteSqlOperatorWrapper

All Implemented Interfaces:

DrillCalciteSqlWrapper

public class DrillCalciteSqlOperatorWrapper
extends org.apache.calcite.sql.SqlOperator
implements DrillCalciteSqlWrapper

This class serves as a wrapper class for SqlOperator. 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 SqlOperator.

Field Summary

Fields

Modifier and Type	Field and Description
org.apache.calcite.sql.SqlOperator	operator

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description
DrillCalciteSqlOperatorWrapper(org.apache.calcite.sql.SqlOperator operator, String rename, List<DrillFuncHolder> functions)

Method Summary

Modifier and Type	Method and Description
boolean	argumentMustBeScalar(int ordinal)
boolean	checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding, boolean throwOnFailure)
org.apache.calcite.sql.SqlCall	createCall(org.apache.calcite.sql.SqlLiteral functionQualifier, org.apache.calcite.sql.parser.SqlParserPos pos, org.apache.calcite.sql.SqlNode... operands)
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
String	getSignatureTemplate(int operandsCount)
org.apache.calcite.sql.SqlSyntax	getSyntax()
org.apache.calcite.rel.type.RelDataType	inferReturnType(org.apache.calcite.sql.SqlOperatorBinding opBinding)
boolean	isDeterministic()
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.SqlOperator

acceptCall, acceptCall, adjustType, allowsFraming, checkOperandCount, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, deriveType, equals, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getNameAsId, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, hashCode, inferReturnType, isAggregator, isDynamicFunction, isGroup, isGroupAuxiliary, isName, leftPrec, preValidateCall, requiresOrder, requiresOver, rightPrec, unparseListClause, unparseListClause, validateCall, validateOperands

Methods inherited from class java.lang.Object

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

Field Detail

operator

public final org.apache.calcite.sql.SqlOperator operator

Constructor Detail

DrillCalciteSqlOperatorWrapper

public DrillCalciteSqlOperatorWrapper(org.apache.calcite.sql.SqlOperator operator,
                                      String rename,
                                      List<DrillFuncHolder> functions)

Method Detail

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

getSyntax

public org.apache.calcite.sql.SqlSyntax getSyntax()

Specified by:

getSyntax in class org.apache.calcite.sql.SqlOperator

createCall

public org.apache.calcite.sql.SqlCall createCall(org.apache.calcite.sql.SqlLiteral functionQualifier,
                                                 org.apache.calcite.sql.parser.SqlParserPos pos,
                                                 org.apache.calcite.sql.SqlNode... operands)

Overrides:

createCall in class org.apache.calcite.sql.SqlOperator

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

checkOperandTypes

public boolean checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding,
                                 boolean throwOnFailure)

Overrides:

checkOperandTypes in class org.apache.calcite.sql.SqlOperator

validRexOperands

public boolean validRexOperands(int count,
                                org.apache.calcite.util.Litmus litmus)

Overrides:

validRexOperands in class org.apache.calcite.sql.SqlOperator

getSignatureTemplate

public String getSignatureTemplate(int operandsCount)

Overrides:

getSignatureTemplate 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

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

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.SqlOperator

inferReturnType

public org.apache.calcite.rel.type.RelDataType inferReturnType(org.apache.calcite.sql.SqlOperatorBinding opBinding)

Overrides:

inferReturnType in class org.apache.calcite.sql.SqlOperator