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• 0.1117.0
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• TransactionReadSentinelBehavior.java

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com.palantir.atlasdb.transaction.api.TransactionReadSentinelBehavior Maven / Gradle / Ivy

/*
 * (c) Copyright 2018 Palantir Technologies Inc. All rights reserved.
 *
 * 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 com.palantir.atlasdb.transaction.api;

/**
 * This enum handles the different behaviors that can happen as a result of doing reads before the
 * unreadable timestamp.
 */
public enum TransactionReadSentinelBehavior {
    /**
     * Throw an exception when a sentinel is read. This is the default value.
     */
    THROW_EXCEPTION,
    /**
     * Ignore the sentinel read, and pretend that there is no value for this cell. This should only
     * be used internally for special long running transactions.
     */
    IGNORE
}