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Neo4j kernel is a lightweight, embedded Java database designed to store data structured as graphs rather than tables. For more information, see http://neo4j.org.

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/*
 * Copyright (c) 2002-2015 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.kernel;

import org.neo4j.graphdb.TransientTransactionFailureException;

/**
 * Signals that a deadlock between two or more transactions has been detected.
 */
public class DeadlockDetectedException extends TransientTransactionFailureException
{
    public DeadlockDetectedException( String message )
    {
        super( message, null );
    }

    public DeadlockDetectedException( String message, Throwable cause )
    {
        super( "Don't panic.\n" +
                "\n" +
                "A deadlock scenario has been detected and avoided. This means that two or more transactions, which were " +
                "holding locks, were wanting to await locks held by one another, which would have resulted in a deadlock " +
                "between these transactions. This exception was thrown instead of ending up in that deadlock.\n" +
                "\n" +
                "See the deadlock section in the Neo4j manual for how to avoid this: " +
                "http://neo4j.com/docs/stable/transactions-deadlocks.html\n" +
                "\n" +
                "Details: '" + message + "'.", cause );
    }
}