Package org.apache.commons.collections.functors

Class CloneTransformer

  • All Implemented Interfaces:
    java.io.Serializable, Transformer
    public class CloneTransformer
extends java.lang.Object
implements Transformer, java.io.Serializable
    Transformer implementation that returns a clone of the input object.

    Clone is performed using PrototypeFactory.getInstance(input).create().

    WARNING: from v3.2.2 onwards this class will throw an UnsupportedOperationException when trying to serialize or de-serialize an instance to prevent potential remote code execution exploits.

    In order to re-enable serialization support for CloneTransformer the following system property can be used (via -Dproperty=true): 

     org.apache.commons.collections.enableUnsafeSerialization
    Since:
    Commons Collections 3.0
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static Transformer INSTANCE
      Singleton predicate instance

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static Transformer getInstance()
      Factory returning the singleton instance.
      java.lang.Object transform​(java.lang.Object input)
      Transforms the input to result by cloning it.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • INSTANCE

        public static final Transformer INSTANCE
        Singleton predicate instance

    • Method Detail

      • getInstance

        public static Transformer getInstance()
        Factory returning the singleton instance.
        Returns:
        the singleton instance
        Since:
        Commons Collections 3.1

      • transform

        public java.lang.Object transform​(java.lang.Object input)
        Transforms the input to result by cloning it.
        Specified by:
        transform in interface Transformer
        Parameters:
        input - the input object to transform
        Returns:
        the transformed result