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

Class FlinkTimestampDynamicFunction

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.FlinkTimestampDynamicFunction

Direct Known Subclasses:

FlinkTimestampWithPrecisionDynamicFunction

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

Function that used to define SQL time functions like LOCALTIME, CURRENT_TIME(these are all dynamic functions in Calcite's SqlStdOperatorTable) in Flink, the difference from the parent SqlAbstractTimeFunction is this function class be aware of whether it is used in batch mode, if true it will act totally same as the parent SqlAbstractTimeFunction, but will be a non-deterministic function if not in batch mode.

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	isBatchMode

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

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Constructor	Description
FlinkTimestampDynamicFunction(String functionName, org.apache.calcite.sql.type.SqlTypeName returnTypeName, boolean isBatchMode)

Method Summary

Modifier and Type	Method	Description
boolean	equals(@Nullable Object obj)
int	hashCode()
boolean	isDeterministic()
boolean	isDynamicFunction()

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

getMonotonicity, getSyntax, inferReturnType

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, createCall, createCall, createCall, deriveOperandType, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, inferReturnType, isAggregator, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, not, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, reverse, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

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

Field Details

isBatchMode

protected final boolean isBatchMode

Constructor Details

FlinkTimestampDynamicFunction

public FlinkTimestampDynamicFunction(String functionName,
 org.apache.calcite.sql.type.SqlTypeName returnTypeName,
 boolean isBatchMode)

Method Details

isDynamicFunction

public boolean isDynamicFunction()

Overrides:

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

isDeterministic

public boolean isDeterministic()

Overrides:

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

equals

public boolean equals(@Nullable Object obj)

Overrides:

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

hashCode

public int hashCode()

Overrides:

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