Package play.libs.reflect

Class ConstructorUtils

java.lang.Object
play.libs.reflect.ConstructorUtils
public class ConstructorUtils extends Object
Imported from apache.commons.lang3 3.6

  • Constructor Details

    • ConstructorUtils

      public ConstructorUtils()

  • Method Details

    • getAccessibleConstructor

      public static <T> Constructor<T> getAccessibleConstructor(Constructor<T> ctor)
      Checks if the specified constructor is accessible.

      This simply ensures that the constructor is accessible.

      Type Parameters:
      T - the constructor type
      Parameters:
      ctor - the prototype constructor object, not null
      Returns:
      the constructor, null if no matching accessible constructor found
      Throws:
      NullPointerException - if ctor is null
      See Also:

    • getMatchingAccessibleConstructor

      public static <T> Constructor<T> getMatchingAccessibleConstructor(Class<T> cls, Class<?>... parameterTypes)
      Finds an accessible constructor with compatible parameters.

      This checks all the constructor and finds one with compatible parameters This requires that every parameter is assignable from the given parameter types. This is a more flexible search than the normal exact matching algorithm.

      First it checks if there is a constructor matching the exact signature. If not then all the constructors of the class are checked to see if their signatures are assignment-compatible with the parameter types. The first assignment-compatible matching constructor is returned.

      Type Parameters:
      T - the constructor type
      Parameters:
      cls - the class to find a constructor for, not null
      parameterTypes - find method with compatible parameters
      Returns:
      the constructor, null if no matching accessible constructor found
      Throws:
      NullPointerException - if cls is null