org.opencms.util

Class CmsCollectionsGenericWrapper

java.lang.Object

org.opencms.util.CmsCollectionsGenericWrapper

public final class CmsCollectionsGenericWrapper
extends java.lang.Object

Provides Map wrapping utility functions for Java generics.

Since:

8.0.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CmsCollectionsGenericWrapper.MapWrapper<K,V> Wrapper for lazy maps providing a better containsKey implementation.

Method Summary

Modifier and Type	Method and Description
static <K,V> java.util.Map<K,V>	createLazyMap(org.apache.commons.collections.Transformer T) Provides a wrapper to access the LazyMap functionality that avoids warnings with Java 1.5 generic code.
static <K,V> java.util.Map<K,V>	createLRUMap() Provides a wrapper to create a LRUMap that avoids warnings with Java 1.5 generic code.
static <K,V> java.util.Map<K,V>	createLRUMap(int size) Provides a wrapper to create a LRUMap with the given size that avoids warnings with Java 1.5 generic code.
static <K> java.util.Enumeration<K>	enumeration(java.util.Enumeration<?> enumeration) Provides a wrapper to convert an enumeration that avoids warnings with Java 1.5 generic code.
static <K> java.util.List<K>	list(java.lang.Object o) Provides a wrapper to convert an object into a list that avoids warnings with Java 1.5 generic code.
static <K,V> java.util.Map<K,V>	map(java.lang.Object o) Provides a wrapper to convert an object into a map that avoids warnings with Java 1.5 generic code.

Methods inherited from class java.lang.Object

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

Method Detail

createLazyMap

public static <K,V> java.util.Map<K,V> createLazyMap(org.apache.commons.collections.Transformer T)

Provides a wrapper to access the LazyMap functionality that avoids warnings with Java 1.5 generic code.

Type Parameters:

K - the type of keys maintained by the returned map

V - the type of mapped values

Parameters:

T - the transformer to use for the Lazy Map

Returns:

a LazyMap of the required generic type

createLRUMap

public static <K,V> java.util.Map<K,V> createLRUMap()

Provides a wrapper to create a LRUMap that avoids warnings with Java 1.5 generic code.

Type Parameters:

K - the type of keys maintained by the returned map

V - the type of mapped values

Returns:

a LRUMap of the required generic type

createLRUMap

public static <K,V> java.util.Map<K,V> createLRUMap(int size)

Provides a wrapper to create a LRUMap with the given size that avoids warnings with Java 1.5 generic code.

Type Parameters:

K - the type of keys maintained by the returned map

V - the type of mapped values

Parameters:

size - the initial size of the created Map

Returns:

a LRUMap with the given size of the required generic type

enumeration

public static <K> java.util.Enumeration<K> enumeration(java.util.Enumeration<?> enumeration)

Provides a wrapper to convert an enumeration that avoids warnings with Java 1.5 generic code.

Type Parameters:

K - the type of the returned enumeration elements

Parameters:

enumeration - the enumeration to be converted

Returns:

a Enumeration with the required generic type

list

public static <K> java.util.List<K> list(java.lang.Object o)

Provides a wrapper to convert an object into a list that avoids warnings with Java 1.5 generic code.

Type Parameters:

K - the type of the returned list elements

Parameters:

o - the object to be converted

Returns:

a List with the required generic type

map

public static <K,V> java.util.Map<K,V> map(java.lang.Object o)

Provides a wrapper to convert an object into a map that avoids warnings with Java 1.5 generic code.

Type Parameters:

K - the type of keys maintained by the returned map

V - the type of mapped values

Parameters:

o - the object to be converted

Returns:

a Map of the required generic type