io.github.theangrydev.businessflows.TechnicalFailureCase Maven / Gradle / Ivy

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/*
 * Copyright 2016 Liam Williams .
 *
 * This file is part of business-flows.
 *
 * 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.github.theangrydev.businessflows;

import java.util.Optional;
import java.util.function.Function;

/**
 * A {@link TechnicalFailureCase} is a {@link BusinessCase} that is in an unexpected exceptional state.
 *
 * {@inheritDoc}
 */
class TechnicalFailureCase implements BusinessCase {

    private final Exception technicalFailure;

    TechnicalFailureCase(Exception technicalFailure) {
        this.technicalFailure = technicalFailure;
    }

    @Override
    public  Result join(Mapping happyJoiner, Mapping sadJoiner, Function technicalFailureJoiner) {
        return technicalFailureJoiner.apply(technicalFailure);
    }

    @Override
    public  Result join(Mapping happyJoiner, Mapping sadJoiner) throws Exception {
        throw technicalFailure;
    }

    @Override
    public Optional happyOptional() {
        return Optional.empty();
    }

    @Override
    public Optional sadOptional() {
        return Optional.empty();
    }

    @Override
    public Optional technicalFailureOptional() {
        return Optional.of(technicalFailure);
    }

    @Override
    public String toString() {
        return "Technical Failure: " + technicalFailure;
    }
}