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/*
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 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
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 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
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 */

package javax.transaction;

import java.lang.IllegalArgumentException;
import java.lang.IllegalStateException;
import java.lang.SecurityException;

/**
 * The UserTransaction interface defines the methods that allow an
 * application to explicitly manage transaction boundaries.
 */
public interface UserTransaction {

    /**
     * Create a new transaction and associate it with the current thread.
     *
     * @exception NotSupportedException Thrown if the thread is already
     *    associated with a transaction and the Transaction Manager
     *    implementation does not support nested transactions.
     *
     * @exception SystemException Thrown if the transaction manager
     *    encounters an unexpected error condition.
     *
     */
    void begin() throws NotSupportedException, SystemException;

    /**
     * Complete the transaction associated with the current thread. When this
     * method completes, the thread is no longer associated with a transaction.
     *
     * @exception RollbackException Thrown to indicate that
     *    the transaction has been rolled back rather than committed.
     *
     * @exception HeuristicMixedException Thrown to indicate that a heuristic
     *    decision was made and that some relevant updates have been committed
     *    while others have been rolled back.
     *
     * @exception HeuristicRollbackException Thrown to indicate that a
     *    heuristic decision was made and that all relevant updates have been
     *    rolled back.
     *
     * @exception SecurityException Thrown to indicate that the thread is
     *    not allowed to commit the transaction.
     *
     * @exception IllegalStateException Thrown if the current thread is
     *    not associated with a transaction.
     *
     * @exception SystemException Thrown if the transaction manager
     *    encounters an unexpected error condition.
    */
    void commit() throws RollbackException,
	HeuristicMixedException, HeuristicRollbackException, SecurityException,
	IllegalStateException, SystemException;

    /**
     * Roll back the transaction associated with the current thread. When this
     * method completes, the thread is no longer associated with a transaction.
     *
     * @exception SecurityException Thrown to indicate that the thread is
     *    not allowed to roll back the transaction.
     *
     * @exception IllegalStateException Thrown if the current thread is
     *    not associated with a transaction.
     *
     * @exception SystemException Thrown if the transaction manager
     *    encounters an unexpected error condition.
     *
     */
    void rollback() throws IllegalStateException, SecurityException,
        SystemException;

    /**
     * Modify the transaction associated with the current thread such that
     * the only possible outcome of the transaction is to roll back the
     * transaction.
     *
     * @exception IllegalStateException Thrown if the current thread is
     *    not associated with a transaction.
     *
     * @exception SystemException Thrown if the transaction manager
     *    encounters an unexpected error condition.
     *
     */
    void setRollbackOnly() throws IllegalStateException, SystemException;

    /**
     * Obtain the status of the transaction associated with the current thread.
     *
     * @return The transaction status. If no transaction is associated with
     *    the current thread, this method returns the Status.NoTransaction
     *    value.
     *
     * @exception SystemException Thrown if the transaction manager
     *    encounters an unexpected error condition.
     *
     */
    int getStatus() throws SystemException;

    /**
     * Modify the timeout value that is associated with transactions started
     * by the current thread with the begin method.
     *
     *  If an application has not called this method, the transaction
     * service uses some default value for the transaction timeout.
     *
     * @param seconds The value of the timeout in seconds. If the value is zero,
     *        the transaction service restores the default value. If the value
     *        is negative a SystemException is thrown.
     *
     * @exception SystemException Thrown if the transaction manager
     *    encounters an unexpected error condition.
     *
     */
    void setTransactionTimeout(int seconds) throws SystemException;
}