Module dk.cloudcreate.essentials.shared
Package dk.cloudcreate.essentials.shared

Class FailFast

java.lang.Object
dk.cloudcreate.essentials.shared.FailFast
public final class FailFast extends Object
Collection of Objects.requireNonNull(Object) replacement methods

  • Constructor Details

    • FailFast

      public FailFast()

  • Method Details

    • requireMustBeInstanceOf

      public static <T> T requireMustBeInstanceOf(Object objectThatMustBeAnInstanceOf, Class<T> mustBeAnInstanceOf)
      Assert that the objectThatMustBeAnInstanceOf is an instance of mustBeAnInstanceOf parameter, if not then IllegalArgumentException is thrown
      Type Parameters:
      T - the type of class that the objectThatMustBeAnInstanceOf must be an instance of
      Parameters:
      objectThatMustBeAnInstanceOf - the object that must be an instance of mustBeAnInstanceOf parameter
      mustBeAnInstanceOf - the type that the objectThatMustBeAnInstanceOf parameter must be an instance of
      Returns:
      the "objectThatMustBeAnInstanceOf" IF it is of the right type

    • requireMustBeInstanceOf

      public static <T> T requireMustBeInstanceOf(Object objectThatMustBeAnInstanceOf, Class<?> mustBeAnInstanceOf, String message)
      Assert that the objectThatMustBeAnInstanceOf is an instance of mustBeAnInstanceOf parameter, if not then IllegalArgumentException is thrown
      Type Parameters:
      T - the type of class that the objectThatMustBeAnInstanceOf must be an instance of
      Parameters:
      objectThatMustBeAnInstanceOf - the object that must be an instance of mustBeAnInstanceOf parameter
      mustBeAnInstanceOf - the type that the objectThatMustBeAnInstanceOf parameter must be an instance of
      message - the optional message that will become the message of the IllegalArgumentException in case the objectThatMustBeAnInstanceOf is NOT an instance of mustBeAnInstanceOf
      Returns:
      the "objectThatMustBeAnInstanceOf" IF it is of the right type

    • requireNonNull

      public static <T> T requireNonNull(T objectThatMayNotBeNull, String message)
      Assert that the objectThatMayNotBeNull is NOT null. If it's null then an IllegalArgumentException is thrown
      Type Parameters:
      T - the type of the objectThatMayNotBeNull
      Parameters:
      objectThatMayNotBeNull - the object that must NOT be null
      message - the optional message that will become the message of the IllegalArgumentException in case the objectThatMayNotBeNull is NULL
      Returns:
      the "objectThatMayNotBeNull" IF it's not null

    • requireNonBlank

      public static <T extends CharSequence> T requireNonBlank(T characterStreamThatMustNotBeEmptyOrNull, String message)
      Assert that the characterStreamThatMustNotBeEmptyOrNull is NOT null AND NOT empty/blank, otherwise a IllegalArgumentException is thrown
      Type Parameters:
      T - the type of the characterStreamThatMustNotBeEmptyOrNull
      Parameters:
      characterStreamThatMustNotBeEmptyOrNull - the object that must NOT be null or empty
      message - the optional message that will become the message of the IllegalArgumentException in case the characterStreamThatMustNotBeEmptyOrNull is NULL
      Returns:
      the "characterStreamThatMustNotBeEmptyOrNull" IF it's not null

    • requireNonNull

      public static <T> T requireNonNull(T objectThatMayNotBeNull, String message, Object... messageArguments)
      Assert that the objectThatMayNotBeNull is NOT null. If it's null then an IllegalArgumentException is thrown
      Short handle for calling requireNonNull(someObjectThatMustNotBeNull, m("Message with {} placeholder", someMessageObject)) - (see MessageFormatter.msg(String, Object...))
      Type Parameters:
      T - the type of the objectThatMayNotBeNull
      Parameters:
      objectThatMayNotBeNull - the object that must NOT be null
      message - the optional message that will become the message of the IllegalArgumentException in case the objectThatMayNotBeNull is NULL
      messageArguments - any placeholders for the message (see MessageFormatter.msg(String, Object...))
      Returns:
      the "objectThatMayNotBeNull" IF it's not null

    • requireNonNull

      public static <T> T requireNonNull(T objectThatMayNotBeNull)
      Assert that the objectThatMayNotBeNull is NOT null. If it's null then an IllegalArgumentException is thrown
      Type Parameters:
      T - the type of the objectThatMayNotBeNull
      Parameters:
      objectThatMayNotBeNull - the object that must NOT be null
      Returns:
      the "objectThatMayNotBeNull" IF it's not null

    • requireTrue

      public static void requireTrue(boolean mustBeTrue, String message)
      Assert that the boolean value mustBeTrue is true. If not then an IllegalArgumentException is thrown
      Parameters:
      mustBeTrue - boolean value that we will assert MUST be TRUE
      message - the NON optional message that will become the message of the IllegalArgumentException in case the mustBeTrue is FALSE

    • requireFalse

      public static void requireFalse(boolean mustBeFalse, String message)
      Assert that the boolean value mustBeTrue is true. If not then an IllegalArgumentException is thrown
      Parameters:
      mustBeFalse - boolean value that we will assert MUST be FALSE
      message - the NON optional message that will become the message of the IllegalArgumentException in case the mustBeFalse is TRUE

    • requireNonEmpty

      public static Object[] requireNonEmpty(Object[] items, String message)

    • requireNonEmpty

      public static <T> List<T> requireNonEmpty(List<T> items, String message)

    • requireNonEmpty

      public static <T> Set<T> requireNonEmpty(Set<T> items, String message)

    • requireNonEmpty

      public static <K, V> Map<K,V> requireNonEmpty(Map<K,V> items, String message)