org.wildfly.common.function.ExceptionFunction Maven / Gradle / Ivy
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* Copyright 2016 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 org.wildfly.common.function;
import org.wildfly.common.Assert;
/**
* A one-argument function which can throw an exception.
*
* @author David M. Lloyd
*/
@FunctionalInterface
public interface ExceptionFunction {
/**
* Applies this function to the given arguments.
*
* @param t the argument
* @return the function result
* @throws E if an exception occurs
*/
R apply(T t) throws E;
default ExceptionFunction andThen(ExceptionFunction after) {
Assert.checkNotNullParam("after", after);
return t -> after.apply(apply(t));
}
default ExceptionFunction andThen(ExceptionBiFunction after) {
Assert.checkNotNullParam("after", after);
return t -> after.apply(t, apply(t));
}
default ExceptionFunction compose(ExceptionFunction before) {
Assert.checkNotNullParam("before", before);
return t -> apply(before.apply(t));
}
default ExceptionConsumer andThen(ExceptionConsumer after) {
Assert.checkNotNullParam("after", after);
return t -> after.accept(apply(t));
}
default ExceptionConsumer andThen(ExceptionBiConsumer after) {
Assert.checkNotNullParam("after", after);
return t -> after.accept(t, apply(t));
}
default ExceptionPredicate andThen(ExceptionPredicate after) {
Assert.checkNotNullParam("after", after);
return t -> after.test(apply(t));
}
default ExceptionPredicate andThen(ExceptionBiPredicate after) {
Assert.checkNotNullParam("after", after);
return t -> after.test(t, apply(t));
}
default ExceptionSupplier compose(ExceptionSupplier before) {
Assert.checkNotNullParam("before", before);
return () -> apply(before.get());
}
}