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

Class FlinkSqlTimestampFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.fun.SqlAbstractTimeFunction

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

@Internal
public class FlinkSqlTimestampFunction
extends org.apache.calcite.sql.fun.SqlAbstractTimeFunction

Function that used to define SQL time function like LOCALTIMESTAMP, CURRENT_TIMESTAMP, CURRENT_ROW_TIMESTAMP(), NOW() in Flink, the function support configuring the return type and the precision of return type.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor and Description
FlinkSqlTimestampFunction(String functionName, org.apache.calcite.sql.type.SqlTypeName returnTypeName, int precision)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.rel.type.RelDataType	inferReturnType(org.apache.calcite.sql.SqlOperatorBinding opBinding)
boolean	isDeterministic()

Methods inherited from class org.apache.calcite.sql.fun.SqlAbstractTimeFunction

getMonotonicity, getSyntax, isDynamicFunction

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

deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, 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, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, isAggregator, 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

Constructor Detail

FlinkSqlTimestampFunction

public FlinkSqlTimestampFunction(String functionName,
                                 org.apache.calcite.sql.type.SqlTypeName returnTypeName,
                                 int precision)

Method Detail

inferReturnType

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

Overrides:

inferReturnType in class org.apache.calcite.sql.fun.SqlAbstractTimeFunction

isDeterministic

public boolean isDeterministic()

Overrides:

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