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

Class SqlTryCastFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

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

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

All Implemented Interfaces:

BuiltInSqlOperator

@Internal
public class SqlTryCastFunction
extends BuiltInSqlFunction

This class implements the TRY_CAST built-in, essentially delegating all the method invocations, whenever is possible, to Calcite's SqlCastFunction.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.table.planner.functions.sql.BuiltInSqlFunction

BuiltInSqlFunction.Builder

Field Summary

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

kind, MDX_PRECEDENCE, NL

Method Summary

Modifier and Type	Method and Description
boolean	checkOperandTypes(org.apache.calcite.sql.SqlCallBinding callBinding, boolean throwOnFailure)
org.apache.calcite.sql.SqlOperandCountRange	getOperandCountRange()
String	getSignatureTemplate(int operandsCount)
org.apache.calcite.sql.SqlSyntax	getSyntax()
org.apache.calcite.rel.type.RelDataType	inferReturnType(org.apache.calcite.sql.SqlOperatorBinding opBinding)
void	unparse(org.apache.calcite.sql.SqlWriter writer, org.apache.calcite.sql.SqlCall call, int leftPrec, int rightPrec)

Methods inherited from class org.apache.flink.table.planner.functions.sql.BuiltInSqlFunction

getMonotonicity, getQualifiedName, getVersion, isDeterministic, isInternal, newBuilder

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

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

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

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getStrongPolicyInference, hashCode, inferReturnType, isAggregator, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, 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

Methods inherited from interface org.apache.flink.table.planner.functions.sql.BuiltInSqlOperator

extractNameFromQualifiedName, toQualifiedName, unwrapIsInternal, unwrapVersion

Method Detail

getSignatureTemplate

public String getSignatureTemplate(int operandsCount)

Overrides:

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

getOperandCountRange

public org.apache.calcite.sql.SqlOperandCountRange getOperandCountRange()

Overrides:

getOperandCountRange 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

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

inferReturnType

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

Overrides:

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