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

类 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

所有已实现的接口:

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.

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.table.planner.functions.sql.BuiltInSqlFunction

BuiltInSqlFunction.Builder

字段概要

从类继承的字段 org.apache.calcite.sql.SqlOperator

kind, MDX_PRECEDENCE, NL

方法概要

限定符和类型	方法和说明
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)

从类继承的方法 org.apache.flink.table.planner.functions.sql.BuiltInSqlFunction

getMonotonicity, getQualifiedName, getVersion, isDeterministic, isInternal, newBuilder

从类继承的方法 org.apache.calcite.sql.SqlFunction

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

从类继承的方法 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

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.planner.functions.sql.BuiltInSqlOperator

extractNameFromQualifiedName, toQualifiedName, unwrapIsInternal, unwrapVersion

方法详细资料

getSignatureTemplate

public String getSignatureTemplate(int operandsCount)

覆盖:

getSignatureTemplate 在类中 org.apache.calcite.sql.SqlOperator

getOperandCountRange

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

覆盖:

getOperandCountRange 在类中 org.apache.calcite.sql.SqlOperator

checkOperandTypes

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

覆盖:

checkOperandTypes 在类中 org.apache.calcite.sql.SqlOperator

getSyntax

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

覆盖:

getSyntax 在类中 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)

覆盖:

unparse 在类中 org.apache.calcite.sql.SqlFunction

inferReturnType

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

覆盖:

inferReturnType 在类中 org.apache.calcite.sql.SqlOperator