Package net.groboclown.retval

Combine values with problems associated with the values.

Interface Summary

Interface	Description
Problem	A standard problem that prevents a valid value from being returned.
ProblemContainer	An object that contains problems.
RetNullable<T>	A problem container that contains a nullable value or problems, but not both.
RetVal<T>	A non-null value holder version of a problem container.
RetVoid	A simple returnable that can have problems, but no value.
SourcedProblem	A problem that includes a known source.
ValuedProblemContainer<T>	A generic type that contains a value and possible problems.

Class Summary

Class	Description
ProblemCollector	Collects problems from multiple requests to gather data.
Ret	Utility class for working with collections of return values.
ValueAccumulator<T>	Allows for accumulating a list of values, some of which may have errors associated with them.
ValueBuilder<T>	Contains a non-null value and accumulates problems as aspects of the value are updated.
WarningVal<T>	A container for a non-null value and associated problems.