io.activej.common.api.DecoderFunction Maven / Gradle / Ivy
/*
* Copyright (C) 2020 ActiveJ LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.activej.common.api;
import io.activej.common.exception.MalformedDataException;
import io.activej.common.exception.UncheckedException;
import org.jetbrains.annotations.Nullable;
import java.util.function.Function;
@FunctionalInterface
public interface DecoderFunction {
R decode(T value) throws MalformedDataException;
static Function asFunction(DecoderFunction fn) {
return item -> {
try {
return fn.decode(item);
} catch (MalformedDataException e) {
throw new UncheckedException(e);
}
};
}
static DecoderFunction of(Function fn) {
return value -> {
try {
return fn.apply(value);
} catch (Exception e) {
throw new MalformedDataException(e);
}
};
}
default R decodeOrDefault(@Nullable T value, R defaultResult) {
try {
if (value != null) {
return decode(value);
}
} catch (MalformedDataException ignore) {}
return defaultResult;
}
default DecoderFunction andThen(DecoderFunction after) {
return (T t) -> after.decode(decode(t));
}
}