SupplierFactory

A factory for creating more complex Supplier objects, particularly useful for boolean conditions. This class is a more robust and recommended alternative to SupplierFilter (which is deprecated).

Methods

invert(Supplier<Boolean> supplier)

Returns a new Supplier<Boolean> that provides the logical inverse of the boolean value returned by the input supplier.

supplierFor(Supplier<T> supplier, Predicate<T> predicate)

Creates a Supplier<Boolean> that evaluates a predicate against the value provided by an input supplier.

• <T>: The type of value supplied by the input supplier.
• supplier: The Supplier that provides the value to be tested.
• predicate: The Predicate that tests the supplied value.

fromDouble(Supplier<Double> supplier, double tolerance)

Creates a Supplier<Boolean> that returns true if the absolute value of the double supplied by the input supplier is greater than or equal to the specified tolerance.

fromDouble(Supplier<Double> supplier)

Creates a Supplier<Boolean> that returns true if the absolute value of the double supplied by the input supplier is greater than or equal to 0 (effectively checking if the value is non-zero).

invertAll(Collection<Supplier<Boolean>> collection)

Returns a new Collection of Supplier<Boolean> objects, where each supplier in the new collection provides the inverted boolean value of the corresponding supplier in the input collection.

invertAll(Supplier<Boolean>[] collection)

Returns a new List of Supplier<Boolean> objects, where each supplier in the new list provides the inverted boolean value of the corresponding supplier in the input array.

anyTrue(Supplier<Boolean>... suppliers)

Returns a Supplier<Boolean> that returns true if any of the provided boolean suppliers return true.

anyFalse(Supplier<Boolean>... suppliers)

Returns a Supplier<Boolean> that returns true if any of the provided boolean suppliers return false.

allTrue(Supplier<Boolean>... suppliers)

Returns a Supplier<Boolean> that returns true if all of the provided boolean suppliers return true.

allFalse(Supplier<Boolean>... suppliers)

Returns a Supplier<Boolean> that returns true if all of the provided boolean suppliers return false.

trueThenAllFalse(Supplier<Boolean> mustBeTrue, Supplier<Boolean>... suppliers)

Returns a Supplier<Boolean> that returns true if the mustBeTrue supplier returns true AND all of the other suppliers return false.

falseThenAllTrue(Supplier<Boolean> mustBeFalse, Supplier<Boolean>... suppliers)

Returns a Supplier<Boolean> that returns true if the mustBeFalse supplier returns false AND all of the other suppliers return true.