Package org.opencms.util

Class CmsCollectionsGenericWrapper

  • public final class CmsCollectionsGenericWrapper
extends java.lang.Object
    Provides Map wrapping utility functions for Java generics.

    Since:
    8.0.0

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method 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