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authorpacien2019-04-05 04:25:09 +0200
committerpacien2019-04-05 04:25:09 +0200
commit614bd19ad5298bdf1504b8c2d190b1d6cad4e34d (patch)
treeeaffa151d9d3dbde1c231f7070689b24c273050b /src/main/java/org
parent00045fe7355b4cf07afe6bedba85d0bf7bde2b26 (diff)
downloadjava-lemonad-614bd19ad5298bdf1504b8c2d190b1d6cad4e34d.tar.gz
add shortcuts for mapping adapters
Diffstat (limited to 'src/main/java/org')
-rw-r--r--src/main/java/org/pacien/lemonad/attempt/Attempt.java20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/main/java/org/pacien/lemonad/attempt/Attempt.java b/src/main/java/org/pacien/lemonad/attempt/Attempt.java
index dcbb2d3..d5d82ed 100644
--- a/src/main/java/org/pacien/lemonad/attempt/Attempt.java
+++ b/src/main/java/org/pacien/lemonad/attempt/Attempt.java
@@ -81,6 +81,16 @@ public interface Attempt<R, E> {
81 } 81 }
82 82
83 /** 83 /**
84 * @param mapper a function producing an {@link Attempt}, called with the current result if this {@link Attempt} is a success.
85 * @param errorAdapter a function adapting any intermediate error returned by the {@code mapper} function.
86 * @return this {@link Attempt} if it is a failure, or the produced one otherwise.
87 */
88 default <RR, IE> Attempt<RR, E> mapResult(@NonNull Function<? super R, ? extends Attempt<? extends RR, ? extends IE>> mapper,
89 @NonNull Function<? super IE, ? extends E> errorAdapter) {
90 return mapResult(result -> mapper.apply(result).mapError(error -> failure(errorAdapter.apply(error))));
91 }
92
93 /**
84 * @param mapper a function producing an {@link Attempt}, called with the current error if this {@link Attempt} is a failure. 94 * @param mapper a function producing an {@link Attempt}, called with the current error if this {@link Attempt} is a failure.
85 * @return this {@link Attempt} if it is a success, or the alternative {@link Attempt} retrieved from the supplier otherwise. 95 * @return this {@link Attempt} if it is a success, or the alternative {@link Attempt} retrieved from the supplier otherwise.
86 */ 96 */
@@ -90,6 +100,16 @@ public interface Attempt<R, E> {
90 } 100 }
91 101
92 /** 102 /**
103 * @param mapper a function producing an {@link Attempt}, called with the current error if this {@link Attempt} is a failure.
104 * @param resultAdapter a function adapting any intermediate result returned by the {@code mapper} function.
105 * @return this {@link Attempt} if it is a success, or the alternative {@link Attempt} retrieved from the supplier otherwise.
106 */
107 default <IR, EE> Attempt<R, EE> mapError(@NonNull Function<? super E, ? extends Attempt<? extends IR, ? extends EE>> mapper,
108 @NonNull Function<? super IR, ? extends R> resultAdapter) {
109 return mapError(error -> mapper.apply(error).mapResult(result -> success(resultAdapter.apply(result))));
110 }
111
112 /**
93 * @param resultMapper a function producing an {@link Attempt}, called with the current result if this {@link Attempt} is a success. 113 * @param resultMapper a function producing an {@link Attempt}, called with the current result if this {@link Attempt} is a success.
94 * @param errorMapper a function producing an {@link Attempt}, called with the current error if this {@link Attempt} is a failure. 114 * @param errorMapper a function producing an {@link Attempt}, called with the current error if this {@link Attempt} is a failure.
95 * @return the transformed {@link Attempt}. 115 * @return the transformed {@link Attempt}.