CollectionHelper (Hibernate Core Aggregator 3.6.10.Final API)

java.lang.Object
- org.hibernate.util.CollectionHelper

```
public final class CollectionHelper
extends Object
```
Various help for handling collections.

Author:

Gavin King, Steve Ebersole

Field Summary

Fields
Modifier and Type	Field and Description
`static Collection`	`EMPTY_COLLECTION`
`static List`	`EMPTY_LIST`
`static Map`	`EMPTY_MAP`
`static float`	`LOAD_FACTOR`
`static int`	`MINIMUM_INITIAL_CAPACITY`

Method Summary

Methods
Modifier and Type	Method and Description
`static <T> List<T>`	`arrayList(int anticipatedSize)`
`static int`	`determineProperSizing(int numberOfElements)` Determine the proper initial size for a new collection in order for it to hold the given a number of elements.
`static int`	`determineProperSizing(Map original)` Given a map, determine the proper initial size for a new Map to hold the same number of values.
`static int`	`determineProperSizing(Set original)` Given a set, determine the proper initial size for a new set to hold the same number of values.
`static Map`	`mapOfSize(int size)` Build a properly sized map, especially handling load size and load factor to prevent immediate resizing.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MINIMUM_INITIAL_CAPACITY
```
public static final int MINIMUM_INITIAL_CAPACITY
```
    See Also:
    Constant Field Values
  - LOAD_FACTOR
```
public static final float LOAD_FACTOR
```
    See Also:
    Constant Field Values
  - EMPTY_LIST
```
public static final List EMPTY_LIST
```
  - EMPTY_COLLECTION
```
public static final Collection EMPTY_COLLECTION
```
  - EMPTY_MAP
```
public static final Map EMPTY_MAP
```
- Method Detail
  - mapOfSize
```
public static Map mapOfSize(int size)
```
    Build a properly sized map, especially handling load size and load factor to prevent immediate resizing.
    Especially helpful for copy map contents.
    
    Parameters:
    size - The size to make the map.
    
    Returns:
    The sized map.
  - determineProperSizing
```
public static int determineProperSizing(Map original)
```
    Given a map, determine the proper initial size for a new Map to hold the same number of values. Specifically we want to account for load size and load factor to prevent immediate resizing.
    
    Parameters:
    original - The original map
    
    Returns:
    The proper size.
  - determineProperSizing
```
public static int determineProperSizing(Set original)
```
    Given a set, determine the proper initial size for a new set to hold the same number of values. Specifically we want to account for load size and load factor to prevent immediate resizing.
    
    Parameters:
    original - The original set
    
    Returns:
    The proper size.
  - determineProperSizing
```
public static int determineProperSizing(int numberOfElements)
```
    Determine the proper initial size for a new collection in order for it to hold the given a number of elements. Specifically we want to account for load size and load factor to prevent immediate resizing.
    
    Parameters:
    numberOfElements - The number of elements to be stored.
    
    Returns:
    The proper size.
  - arrayList
```
public static <T> List<T> arrayList(int anticipatedSize)
```

Class CollectionHelper

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MINIMUM_INITIAL_CAPACITY

LOAD_FACTOR

EMPTY_LIST

EMPTY_COLLECTION

EMPTY_MAP

Method Detail

mapOfSize

determineProperSizing

determineProperSizing

determineProperSizing

arrayList