org.apache.flink.table.planner.functions.sql

Class CalciteSqlFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.flink.table.planner.functions.sql.CalciteSqlFunction

public class CalciteSqlFunction
extends org.apache.calcite.sql.SqlFunction

This is a simple override class for Calcite's SqlFunction which provide isDeterministic() as a constructor parameter to simplify construct a new SqlFunction in FlinkSqlOperatorTable.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description

CalciteSqlFunction(String name, org.apache.calcite.sql.SqlKind kind, org.apache.calcite.sql.type.SqlReturnTypeInference returnTypeInference, org.apache.calcite.sql.type.SqlOperandTypeInference operandTypeInference, org.apache.calcite.sql.type.SqlOperandTypeChecker operandTypeChecker, org.apache.calcite.sql.SqlFunctionCategory category, boolean deterministic) Creates a new SqlFunction for a call to a builtin function.

Method Summary

Modifier and Type	Method and Description
boolean	isDeterministic()

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

deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, unparse, validateCall, validateQuantifier

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

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, hashCode, inferReturnType, inferReturnType, isAggregator, isDynamicFunction, isGroup, isGroupAuxiliary, isName, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

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

Constructor Detail

CalciteSqlFunction

public CalciteSqlFunction(String name,
                          org.apache.calcite.sql.SqlKind kind,
                          org.apache.calcite.sql.type.SqlReturnTypeInference returnTypeInference,
                          org.apache.calcite.sql.type.SqlOperandTypeInference operandTypeInference,
                          org.apache.calcite.sql.type.SqlOperandTypeChecker operandTypeChecker,
                          org.apache.calcite.sql.SqlFunctionCategory category,
                          boolean deterministic)

Creates a new SqlFunction for a call to a builtin function.

Parameters:

name - Name of builtin function

kind - kind of operator implemented by function

returnTypeInference - strategy to use for return type inference

operandTypeInference - strategy to use for parameter type inference

operandTypeChecker - strategy to use for parameter type checking

category - categorization for function

deterministic - whether this operator is guaranteed to always return the same result given the same operands

Method Detail

isDeterministic

public boolean isDeterministic()

Overrides:

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