Package org.apache.flink.table.types.inference

Class ConstantArgumentCount

java.lang.Object

org.apache.flink.table.types.inference.ConstantArgumentCount

All Implemented Interfaces:

ArgumentCount

@PublicEvolving
public final class ConstantArgumentCount
extends Object
implements ArgumentCount

Helper class for ArgumentCount with constant boundaries.

Note: All boundaries of this class are inclusive. All indices are 0-based.

Method Summary

Modifier and Type	Method	Description
static ConstantArgumentCount	any()
static ConstantArgumentCount	between(int minCount, int maxCount)
boolean	equals(Object o)
static ConstantArgumentCount	from(int minCount)
Optional<Integer>	getMaxCount()	Returns the maximum number of argument (inclusive) that a function can take.
Optional<Integer>	getMinCount()	Returns the minimum number of argument (inclusive) that a function can take.
int	hashCode()
boolean	isValidCount(int count)	Enables custom validation of argument counts after ArgumentCount.getMinCount() and ArgumentCount.getMaxCount() have been validated.
static ConstantArgumentCount	of(int count)
static ConstantArgumentCount	to(int maxCount)

Methods inherited from class java.lang.Object

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

Method Details

of

public static ConstantArgumentCount of(int count)

between

public static ConstantArgumentCount between(int minCount,
 int maxCount)

from

public static ConstantArgumentCount from(int minCount)

to

public static ConstantArgumentCount to(int maxCount)

any

public static ConstantArgumentCount any()

isValidCount

public boolean isValidCount(int count)

Description copied from interface: ArgumentCount

Enables custom validation of argument counts after ArgumentCount.getMinCount() and ArgumentCount.getMaxCount() have been validated.

Specified by:

isValidCount in interface ArgumentCount

Parameters:

count - total number of arguments including each argument for a vararg function call

getMinCount

public Optional<Integer> getMinCount()

Description copied from interface: ArgumentCount

Returns the minimum number of argument (inclusive) that a function can take.

Optional.empty() if such a lower bound is not defined.

Specified by:

getMinCount in interface ArgumentCount

getMaxCount

public Optional<Integer> getMaxCount()

Description copied from interface: ArgumentCount

Returns the maximum number of argument (inclusive) that a function can take.

Optional.empty() if such an upper bound is not defined.

Specified by:

getMaxCount in interface ArgumentCount

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object