Package org.apache.commons.collections.functors

Class InstantiateTransformer

java.lang.Object
org.apache.commons.collections.functors.InstantiateTransformer
All Implemented Interfaces:
Serializable, Transformer
@Deprecated(since="2021-04-30") public class InstantiateTransformer extends Object implements Transformer, Serializable
Deprecated.
Apache Commons Collections version 3.x is being deprecated from AEMaaCS. The upgraded version 4.4 of Commons Collections is already included as replacement. Customers are advised to upgrade to this version of the library. Please note: the package name was changed to org.apache.commons.collections4. Further note that there are AEM APIs currently exposing the old collections classes; these will be updated in upcoming releases.
Transformer implementation that creates a new object instance by reflection.

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 InstantiateTransformer the following system property can be used (via -Dproperty=true): 

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

  • Field Details

    • NO_ARG_INSTANCE

      public static final Transformer NO_ARG_INSTANCE
      Deprecated.
      Singleton instance that uses the no arg constructor

  • Constructor Details

    • InstantiateTransformer

      public InstantiateTransformer(Class[] paramTypes, Object[] args)
      Deprecated.
      Constructor that performs no validation. Use getInstance if you want that.
      Parameters:
      paramTypes - the constructor parameter types, not cloned
      args - the constructor arguments, not cloned

  • Method Details

    • getInstance

      public static Transformer getInstance(Class[] paramTypes, Object[] args)
      Deprecated.
      Transformer method that performs validation.
      Parameters:
      paramTypes - the constructor parameter types
      args - the constructor arguments
      Returns:
      an instantiate transformer

    • transform

      public Object transform(Object input)
      Deprecated.
      Transforms the input Class object to a result by instantiation.
      Specified by:
      transform in interface Transformer
      Parameters:
      input - the input object to transform
      Returns:
      the transformed result