/// <summary>
/// Combines this instance with another.
/// <para>
/// If both instances contain lists of the same type, the combining function will
/// often be {@code Guavate::concatToList}.
/// </para>
/// <para>
/// It is strongly advised to ensure that the function cannot throw an exception.
///
/// </para>
/// </summary>
/// @param <U> the type of the value in the other instance </param>
/// @param <R> the type of the value in the returned result </param>
/// <param name="other"> the other instance </param>
/// <param name="combiner"> the function that combines the two values </param>
/// <returns> the combined instance of value and failures </returns>
public ValueWithFailures <R> combinedWith <U, R>(ValueWithFailures <U> other, System.Func <T, U, R> combiner)
{
R combinedValue = Objects.requireNonNull(combiner(value, other.value));
ImmutableList <FailureItem> combinedFailures = concatToList(failures, other.failures);
return(ValueWithFailures.of(combinedValue, combinedFailures));
}
/// <summary>
/// Processes the value by applying a function that returns another result.
/// <para>
/// This operation allows post-processing of a result value.
/// This is similar to <seealso cref="#map(Function)"/> but the function returns a {@code ValueWithFailures}.
/// The result of this method consists of the transformed value, and the combined list of failures.
/// </para>
/// <para>
/// It is strongly advised to ensure that the function cannot throw an exception.
///
/// </para>
/// </summary>
/// @param <R> the type of the value in the returned result </param>
/// <param name="function"> the function to transform the value with </param>
/// <returns> the transformed instance of value and failures </returns>
//JAVA TO C# CONVERTER TODO TASK: There is no .NET equivalent to the Java 'super' constraint:
//ORIGINAL LINE: public <R> ValueWithFailures<R> flatMap(java.util.function.Function<? super T, ValueWithFailures<R>> function)
public ValueWithFailures <R> flatMap <R, T1>(System.Func <T1> function)
{
ValueWithFailures <R> transformedValue = Objects.requireNonNull(function(value));
ImmutableList <FailureItem> combinedFailures = ImmutableList.builder <FailureItem>().addAll(this.failures).addAll(transformedValue.failures).build();
return(ValueWithFailures.of(transformedValue.value, combinedFailures));
}
//-------------------------------------------------------------------------
public virtual void test_of_array_noFailures()
{
ValueWithFailures <string> test = ValueWithFailures.of("success");
assertEquals(test.hasFailures(), false);
assertEquals(test.Value, "success");
assertEquals(test.Failures, ImmutableList.of());
}
public virtual void test_of_list()
{
ValueWithFailures <string> test = ValueWithFailures.of("success", ImmutableList.of(FAILURE1, FAILURE2));
assertEquals(test.hasFailures(), true);
assertEquals(test.Value, "success");
assertEquals(test.Failures, ImmutableList.of(FAILURE1, FAILURE2));
}
public virtual void test_of_supplier_success()
{
ValueWithFailures <string> test = ValueWithFailures.of("", () => "A");
assertEquals(test.hasFailures(), false);
assertEquals(test.Value, "A");
assertEquals(test.Failures, ImmutableList.of());
}
public virtual void test_combinedWith_differentTypes()
{
ValueWithFailures <bool> @base = ValueWithFailures.of(true, ImmutableList.of(FAILURE1));
ValueWithFailures <int> other = ValueWithFailures.of(Convert.ToInt32(1), ImmutableList.of(FAILURE2));
ValueWithFailures <string> test = @base.combinedWith(other, (a, b) => a.ToString() + b.ToString());
assertEquals(test.Value, "true1");
assertEquals(test.Failures, ImmutableList.of(FAILURE1, FAILURE2));
}
// -------------------------------------------------------------------------
public virtual void test_combinedWith()
{
ValueWithFailures <IList <string> > @base = ValueWithFailures.of(ImmutableList.of("a"), ImmutableList.of(FAILURE1));
ValueWithFailures <IList <string> > other = ValueWithFailures.of(ImmutableList.of("b", "c"), ImmutableList.of(FAILURE2));
ValueWithFailures <IList <string> > test = @base.combinedWith(other, Guavate.concatToList);
assertEquals(test.Value, ImmutableList.of("a", "b", "c"));
assertEquals(test.Failures, ImmutableList.of(FAILURE1, FAILURE2));
}
//-------------------------------------------------------------------------
public virtual void test_map()
{
ValueWithFailures <IList <string> > @base = ValueWithFailures.of(ImmutableList.of("1", "2"), ImmutableList.of(FAILURE1));
//JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter:
ValueWithFailures <IList <int> > test = @base.map(list => list.Select(s => Convert.ToInt32(s)).collect(toImmutableList()));
assertEquals(test.Value, ImmutableList.of(Convert.ToInt32(1), Convert.ToInt32(2)));
assertEquals(test.Failures, ImmutableList.of(FAILURE1));
}
//-------------------------------------------------------------------------
public virtual void coverage()
{
ValueWithFailures <string> test = ValueWithFailures.of("success", FAILURE1, FAILURE2);
coverImmutableBean(test);
ValueWithFailures <string> test2 = ValueWithFailures.of("test");
coverBeanEquals(test, test2);
}
public virtual void test_flatMap()
{
ValueWithFailures <IList <string> > @base = ValueWithFailures.of(ImmutableList.of("1", "a", "2"), ImmutableList.of(FAILURE1));
ValueWithFailures <IList <int> > test = @base.flatMap(this.flatMapFunction);
assertEquals(test.Value, ImmutableList.of(Convert.ToInt32(1), Convert.ToInt32(2)));
assertEquals(test.Failures.size(), 2);
assertEquals(test.Failures.get(0), FAILURE1);
assertEquals(test.Failures.get(1).Reason, FailureReason.INVALID);
}
/// <summary>
/// Creates an instance using a supplier.
/// <para>
/// If the supplier succeeds normally, the supplied value will be returned.
/// If the supplier fails, the empty value will be returned along with a failure.
///
/// </para>
/// </summary>
/// @param <T> the type of the value </param>
/// <param name="emptyValue"> the empty value </param>
/// <param name="supplier"> supplier of the result value </param>
/// <returns> an instance containing the supplied value, or a failure if an exception is thrown </returns>
public static ValueWithFailures <T> of <T>(T emptyValue, System.Func <T> supplier)
{
try
{
return(of(supplier()));
}
catch (Exception ex)
{
return(ValueWithFailures.of(emptyValue, FailureItem.of(FailureReason.ERROR, ex)));
}
}
public virtual void test_of_supplier_failure()
{
ValueWithFailures <string> test = ValueWithFailures.of("", () =>
{
throw new System.ArgumentException();
});
assertEquals(test.hasFailures(), true);
assertEquals(test.Value, "");
assertEquals(test.Failures.size(), 1);
assertEquals(test.Failures.get(0).Reason, FailureReason.ERROR);
}
//-------------------------------------------------------------------------
public virtual void test_toValueWithFailures()
{
IList <double> testList = ImmutableList.of(5d, 6d, 7d);
//JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter:
ValueWithFailures <double> result = testList.Select(value => mockCalc(value)).collect(ValueWithFailures.toValueWithFailures(1d, (val1, val2) => val1 * val2));
assertEquals(result.Value, 210d); //5 * 6 * 7 = 210
IList <FailureItem> failures = result.Failures;
assertEquals(failures.Count, 3); //One failure item for each element in testList.
assertEquals(failures[0].Message, Messages.format("Error calculating result for input value {}", 5d));
assertEquals(failures[1].Message, Messages.format("Error calculating result for input value {}", 6d));
assertEquals(failures[2].Message, Messages.format("Error calculating result for input value {}", 7d));
}
//-----------------------------------------------------------------------
public override bool Equals(object obj)
{
if (obj == this)
{
return(true);
}
if (obj != null && obj.GetType() == this.GetType())
{
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: ValueWithFailures<?> other = (ValueWithFailures<?>) obj;
ValueWithFailures <object> other = (ValueWithFailures <object>)obj;
return(JodaBeanUtils.equal(value, other.value) && JodaBeanUtils.equal(failures, other.failures));
}
return(false);
}
private ValueWithFailures <IList <int> > flatMapFunction(IList <string> input)
{
IList <int> integers = new List <int>();
IList <FailureItem> failures = new List <FailureItem>();
foreach (string str in input)
{
try
{
integers.Add(Convert.ToInt32(str));
}
catch (System.FormatException ex)
{
failures.Add(FailureItem.of(FailureReason.INVALID, ex));
}
}
return(ValueWithFailures.of(integers, failures));
}
/// <summary>
/// Processes the value by applying a function that alters the value.
/// <para>
/// This operation allows post-processing of a result value.
/// The specified function represents a conversion to be performed on the value.
/// </para>
/// <para>
/// It is strongly advised to ensure that the function cannot throw an exception.
///
/// </para>
/// </summary>
/// @param <R> the type of the value in the returned result </param>
/// <param name="function"> the function to transform the value with </param>
/// <returns> the transformed instance of value and failures </returns>
//JAVA TO C# CONVERTER TODO TASK: There is no .NET equivalent to the Java 'super' constraint:
//ORIGINAL LINE: public <R> ValueWithFailures<R> map(java.util.function.Function<? super T, ? extends R> function)
public ValueWithFailures <R> map <R, T1>(System.Func <T1> function) where T1 : R
{
R transformedValue = Objects.requireNonNull(function(value));
return(ValueWithFailures.of(transformedValue, this.failures));
}
/// <summary>
/// Returns a collector that can be used to create a ValueWithFailure instance from a stream of ValueWithFailure
/// instances.
/// <para>
/// The <seealso cref="Collector"/> returned performs a reduction of its <seealso cref="ValueWithFailures"/> input elements under a
/// specified <seealso cref="BinaryOperator"/> using the provided identity.
///
/// </para>
/// </summary>
/// @param <T> the type of the success value in the <seealso cref="ValueWithFailures"/> </param>
/// <param name="identityValue"> the identity value </param>
/// <param name="operator"> the operator used for the reduction. </param>
/// <returns> a <seealso cref="Collector"/> </returns>
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: public static <T> java.util.stream.Collector<ValueWithFailures<T>, ?, ValueWithFailures<T>> toValueWithFailures(T identityValue, java.util.function.BinaryOperator<T> operator)
public static Collector <ValueWithFailures <T>, ?, ValueWithFailures <T> > toValueWithFailures <T>(T identityValue, System.Func <T, T, T> @operator)
{
System.Func <ValueWithFailures <T>, ValueWithFailures <T>, ValueWithFailures <T> > reduceFunction = (result1, result2) => result1.combinedWith(result2, @operator);
return(Collectors.reducing(ValueWithFailures.of(identityValue), reduceFunction));
}
private static ValueWithFailures <double> mockCalc(double value)
{
FailureItem failure = FailureItem.of(FailureReason.CALCULATION_FAILED, "Error calculating result for input value {}", value);
return(ValueWithFailures.of(value, ImmutableList.of(failure)));
}
public virtual void test_serialization()
{
ValueWithFailures <string> test = ValueWithFailures.of("success", FAILURE1, FAILURE2);
assertSerialization(test);
}
