net.oneandone.stool.locking.Mode Maven / Gradle / Ivy

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Stool's main component. Java Library, cli, setup code.

There is a newer version: 4.0.3

/*
 * Copyright 1&1 Internet AG, https://github.com/1and1/
 *
 * 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 net.oneandone.stool.locking;

public enum Mode {
    NONE, SHARED, EXCLUSIVE;

    public boolean toSharedExclusive() {
        switch (this) {
            case NONE:
                throw new IllegalStateException();
            case SHARED:
                return false;
            case EXCLUSIVE:
                return true;
            default:
                throw new IllegalStateException();
        }
    }
}