org.seedstack.business.util

Class Tuples

java.lang.Object

org.seedstack.business.util.Tuples

public final class Tuples
extends Object

Static utility methods to manage tuples.

Method Summary

Modifier and Type	Method and Description
static Class<? extends org.javatuples.Tuple>	classOfTuple(Collection<?> objects) Returns the tuple class corresponding to the collection size.
static Class<? extends org.javatuples.Tuple>	classOfTuple(int cardinality) Returns the tuple class corresponding to the specified cardinality.
static Class<? extends org.javatuples.Tuple>	classOfTuple(Object... objects) Returns the tuple class corresponding to the array size.
static <T extends org.javatuples.Tuple> T	create(Collection<?> objects) Builds a tuple from a collection of objects.
static <T extends org.javatuples.Tuple> T	create(Iterable<?> objects) Builds a tuple from an Iterable.
static <T extends org.javatuples.Tuple> T	create(Iterable<?> objects, int limit) Builds a tuple from an Iterable, optionally limiting the number of items.
static <T extends org.javatuples.Tuple> T	create(Object... objects) Builds a tuple from an array of objects.
static <T> Class<T>[]	itemClasses(org.javatuples.Tuple tuple) Returns a list containing the classes of the elements of the tuple.
static ParameterizedType	typeOfTuple(Class<?>... classes) Returns the ParameterizedType of the Tuple class corresponding to the specified classes.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static <T extends org.javatuples.Tuple> T create(Collection<?> objects)

Builds a tuple from a collection of objects.

Type Parameters:

T - the tuple type.

Parameters:

objects - the collection of objects (size must be less or equal than 10).

Returns:

the constructed tuple.

create

public static <T extends org.javatuples.Tuple> T create(Object... objects)

Builds a tuple from an array of objects.

Type Parameters:

T - the tuple type.

Parameters:

objects - the collection of objects (size must be less or equal than 10).

Returns:

the constructed tuple.

create

public static <T extends org.javatuples.Tuple> T create(Iterable<?> objects,
                                                        int limit)

Builds a tuple from an Iterable, optionally limiting the number of items.

Type Parameters:

T - the tuple type.

Parameters:

objects - the iterable of objects (size must be less or equal than 10).

limit - the item number limit (-1 means no limit).

Returns:

the constructed tuple.

create

public static <T extends org.javatuples.Tuple> T create(Iterable<?> objects)

Builds a tuple from an Iterable.

Type Parameters:

T - the tuple type.

Parameters:

objects - the iterable of objects (size must be less or equal than 10).

Returns:

the constructed tuple.

classOfTuple

public static Class<? extends org.javatuples.Tuple> classOfTuple(Collection<?> objects)

Returns the tuple class corresponding to the collection size.

Parameters:

objects - the collection of objects (size must be less or equal than 10).

Returns:

the corresponding tuple class.

classOfTuple

public static Class<? extends org.javatuples.Tuple> classOfTuple(Object... objects)

Returns the tuple class corresponding to the array size.

Parameters:

objects - the array of objects (size must be less or equal than 10).

Returns:

the corresponding tuple class.

classOfTuple

public static Class<? extends org.javatuples.Tuple> classOfTuple(int cardinality)

Returns the tuple class corresponding to the specified cardinality.

Parameters:

cardinality - the cardinality (must be less or equal than 10).

Returns:

the corresponding tuple class.

typeOfTuple

public static ParameterizedType typeOfTuple(Class<?>... classes)

Returns the ParameterizedType of the Tuple class corresponding to the specified classes.

For instance, for a list with Customer.class and Order.class the method will return Pair<Customer, Order>.

Parameters:

classes - the tuple classes.

Returns:

the tuple type.

itemClasses

public static <T> Class<T>[] itemClasses(org.javatuples.Tuple tuple)

Returns a list containing the classes of the elements of the tuple.

Type Parameters:

T - the common of the classes contained by the tuple.

Parameters:

tuple - the tuple to convert.

Returns:

the list of classes.