Package com.querydsl.core.util

Class CollectionUtils

java.lang.Object

com.querydsl.core.util.CollectionUtils

public final class CollectionUtils
extends Object

CollectionUtils provides addition operations for Collection types that provide an immutable type for single item collections and after that mutable instances

Author:

tiwe

Method Summary

Modifier and Type	Method	Description
static <T> List<T>	add(List<T> list, T element)
static <T> Set<T>	add(Set<T> set, T element)
static <T> Set<T>	addSorted(Set<T> set, T element)
static <T> List<T>	copyOf(List<T> list)
static <K, V> Map<K,V>	copyOf(Map<K,V> map)
static <T> Set<T>	copyOf(Set<T> set)
static <T> Set<T>	copyOfSorted(Set<T> set)
static boolean	isUnmodifiableType(Class<?> clazz)	Returns true if the type is a known unmodifiable type.
static <T> List<List<T>>	partition(List<T> list, int batchSize)
static <K, V> Map<K,V>	put(Map<K,V> map, K key, V value)
static <T> Set<T>	removeSorted(Set<T> set, T element)
static <T> List<T>	unmodifiableList(List<T> list)	Return an unmodifiable copy of a list, or the same list if its already an unmodifiable type.
static <T> Set<T>	unmodifiableSet(Set<T> set)	Return an unmodifiable copy of a set, or the same set if its already an unmodifiable type.

Methods inherited from class java.lang.Object

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

Method Details

isUnmodifiableType

public static boolean isUnmodifiableType(Class<?> clazz)

Returns true if the type is a known unmodifiable type.

Parameters:

clazz - the type

Returns:

true if the type is a known unmodifiable type

unmodifiableList

public static <T> List<T> unmodifiableList(List<T> list)

Return an unmodifiable copy of a list, or the same list if its already an unmodifiable type.

Type Parameters:

T - element type

Parameters:

list - the list

Returns:

unmodifiable copy of a list, or the same list if its already an unmodifiable type

unmodifiableSet

public static <T> Set<T> unmodifiableSet(Set<T> set)

Return an unmodifiable copy of a set, or the same set if its already an unmodifiable type.

Type Parameters:

T - element type

Parameters:

set - the set

Returns:

unmodifiable copy of a set, or the same set if its already an unmodifiable type

partition

public static <T> List<List<T>> partition(List<T> list,
 int batchSize)

add

public static <T> List<T> add(List<T> list,
 T element)

copyOf

public static <T> List<T> copyOf(List<T> list)

add

public static <T> Set<T> add(Set<T> set,
 T element)

copyOf

public static <T> Set<T> copyOf(Set<T> set)

addSorted

public static <T> Set<T> addSorted(Set<T> set,
 T element)

removeSorted

public static <T> Set<T> removeSorted(Set<T> set,
 T element)

copyOfSorted

public static <T> Set<T> copyOfSorted(Set<T> set)

put

public static <K,
V> Map<K,V> put(Map<K,V> map,
 K key,
 V value)

copyOf

public static <K,
V> Map<K,V> copyOf(Map<K,V> map)