org.apache.calcite.util.mapping

Class IntPair

java.lang.Object

org.apache.calcite.util.mapping.IntPair

public class IntPair
extends Object

An immutable pair of integers.

See Also:

Mapping.iterator()

Field Summary

Fields

Modifier and Type	Field and Description
static com.google.common.base.Function<IntPair,Integer>	LEFT Deprecated.
static com.google.common.collect.Ordering<IntPair>	ORDERING Ordering that compares pairs lexicographically: first by their source, then by their target.
static com.google.common.base.Function<IntPair,Integer>	RIGHT Deprecated.
int	source
static com.google.common.base.Function<IntPair,IntPair>	SWAP Deprecated.
int	target

Constructor Summary

Constructors

Constructor and Description
IntPair(int source, int target)

Method Summary

Modifier and Type	Method and Description
boolean	equals(@Nullable Object obj)
int	hashCode()
static List<Integer>	left(List<IntPair> pairs) Returns the left side of a list of pairs.
static IntPair	of(int left, int right)
static List<Integer>	right(List<IntPair> pairs) Returns the right side of a list of pairs.
String	toString()
static List<IntPair>	zip(List<? extends Number> lefts, List<? extends Number> rights) Converts two lists into a list of IntPairs, whose length is the lesser of the lengths of the source lists.
static List<IntPair>	zip(List<? extends Number> lefts, List<? extends Number> rights, boolean strict) Converts two lists into a list of IntPairs.

Methods inherited from class java.lang.Object

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

Field Detail

SWAP

@Deprecated
public static final com.google.common.base.Function<IntPair,IntPair> SWAP

Deprecated.

Function that swaps source and target fields of an IntPair.

ORDERING

public static final com.google.common.collect.Ordering<IntPair> ORDERING

Ordering that compares pairs lexicographically: first by their source, then by their target.

LEFT

@Deprecated
public static final com.google.common.base.Function<IntPair,Integer> LEFT

Deprecated.

Function that returns the left (source) side of a pair.

RIGHT

@Deprecated
public static final com.google.common.base.Function<IntPair,Integer> RIGHT

Deprecated.

Function that returns the right (target) side of a pair.

source

public final int source

target

public final int target

Constructor Detail

IntPair

public IntPair(int source,
               int target)

Method Detail

of

public static IntPair of(int left,
                         int right)

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(@Nullable Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

zip

public static List<IntPair> zip(List<? extends Number> lefts,
                                List<? extends Number> rights)

Converts two lists into a list of IntPairs, whose length is the lesser of the lengths of the source lists.

Parameters:

lefts - Left list

rights - Right list

Returns:

List of pairs

zip

public static List<IntPair> zip(List<? extends Number> lefts,
                                List<? extends Number> rights,
                                boolean strict)

Converts two lists into a list of IntPairs.

The length of the combined list is the lesser of the lengths of the source lists. But typically the source lists will be the same length.

Parameters:

lefts - Left list

rights - Right list

strict - Whether to fail if lists have different size

Returns:

List of pairs

left

public static List<Integer> left(List<IntPair> pairs)

Returns the left side of a list of pairs.

right

public static List<Integer> right(List<IntPair> pairs)

Returns the right side of a list of pairs.