diff options
| author | Benjamin J. Culkin <bjculkin@mix.wvu.edu> | 2017-10-08 22:39:59 -0300 |
|---|---|---|
| committer | Benjamin J. Culkin <bjculkin@mix.wvu.edu> | 2017-10-08 22:39:59 -0300 |
| commit | c82e3b3b2de0633317ec8fc85925e91422820597 (patch) | |
| tree | 96567416ce23c5ce85601f9cedc3a94bb1c55cba /BJC-Utils2/src/main/java/bjc/utils/data/Identity.java | |
| parent | b3ac1c8690c3e14c879913e5dcc03a5f5e14876e (diff) | |
Start splitting into maven modules
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/data/Identity.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/data/Identity.java | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/data/Identity.java b/BJC-Utils2/src/main/java/bjc/utils/data/Identity.java deleted file mode 100644 index a8c8d70..0000000 --- a/BJC-Utils2/src/main/java/bjc/utils/data/Identity.java +++ /dev/null @@ -1,118 +0,0 @@ -package bjc.utils.data; - -import java.util.function.Function; -import java.util.function.UnaryOperator; - -/** - * @author ben - * - * @param <ContainedType> - */ -/** - * Simple implementation of IHolder that has no hidden behavior - * - * @author ben - * - * @param <ContainedType> - * The type contained in the holder - */ -public class Identity<ContainedType> implements IHolder<ContainedType> { - private ContainedType heldValue; - - /** - * Create a holder holding null - */ - public Identity() { - heldValue = null; - } - - /** - * Create a holder holding the specified value - * - * @param value - * The value to hold - */ - public Identity(final ContainedType value) { - heldValue = value; - } - - @Override - public <BoundType> IHolder<BoundType> bind(final Function<ContainedType, IHolder<BoundType>> binder) { - return binder.apply(heldValue); - } - - @Override - public int hashCode() { - final int prime = 31; - int result = 1; - - result = prime * result + (heldValue == null ? 0 : heldValue.hashCode()); - - return result; - } - - @Override - public boolean equals(final Object obj) { - if (this == obj) return true; - if (obj == null) return false; - if (!(obj instanceof Identity)) return false; - - final Identity<?> other = (Identity<?>) obj; - - if (heldValue == null) { - if (other.heldValue != null) return false; - } else if (!heldValue.equals(other.heldValue)) return false; - - return true; - } - - @Override - public <NewType> Function<ContainedType, IHolder<NewType>> lift(final Function<ContainedType, NewType> func) { - return (val) -> { - return new Identity<>(func.apply(val)); - }; - } - - @Override - public <MappedType> IHolder<MappedType> map(final Function<ContainedType, MappedType> mapper) { - return new Identity<>(mapper.apply(heldValue)); - } - - @Override - public String toString() { - return String.format("Identity [heldValue=%s]", heldValue); - } - - @Override - public IHolder<ContainedType> transform(final UnaryOperator<ContainedType> transformer) { - heldValue = transformer.apply(heldValue); - - return this; - } - - @Override - public <UnwrappedType> UnwrappedType unwrap(final Function<ContainedType, UnwrappedType> unwrapper) { - return unwrapper.apply(heldValue); - } - - /** - * Create a new identity container. - * - * @param val - * The contained value. - * - * @return A new identity container. - */ - public static <ContainedType> Identity<ContainedType> id(final ContainedType val) { - return new Identity<>(val); - } - - /** - * Create a new empty identity container. - * - * @return A new empty identity container. - */ - public static <ContainedType> Identity<ContainedType> id() { - return new Identity<>(); - } -}
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