juneau-core/juneau-marshall/src/main/java/org/apache/juneau/utils/ThrowingFunction.java

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package org.apache.juneau.utils;

import static org.apache.juneau.internal.ExceptionUtils.*;

import java.util.function.*;

/**
 * A subclass of {@link Function} that allows for thrown exceptions.
 *
 * @param <T> the type of the input to the function.
 * @param <R> the type of the result of the function.
 */
@FunctionalInterface
public interface ThrowingFunction<T,R> extends Function<T,R> {

	@Override
	default R apply(T t) {
		try {
			return applyThrows(t);
		} catch (Exception e) {
			throw runtimeException(e);
		}
	}

	/**
	 * The functional method to implement.
	 *
	 * @param t The type of the input to the function.
	 * @return The type of the result of the function.
	 * @throws Exception
	 */
	R applyThrows(T t) throws Exception;
}