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The core O/RM functionality as provided by Hibernate
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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.engine.transaction.spi;

import java.io.Serializable;

import org.hibernate.ConnectionReleaseMode;
import org.hibernate.engine.jdbc.spi.JdbcConnectionAccess;

/**
 * Access to services needed in the context of processing transaction requests.
 * 
 * The context is roughly speaking equivalent to the Hibernate session, as opposed to the {@link TransactionEnvironment}
 * which is roughly equivalent to the Hibernate session factory
 * 
 * @author Steve Ebersole
 */
public interface TransactionContext extends Serializable {
	/**
	 * Obtain the {@link TransactionEnvironment} associated with this context.
	 *
	 * @return The transaction environment.
	 */
	public TransactionEnvironment getTransactionEnvironment();

	/**
	 * Get the mode for releasing JDBC connection in effect for ths context.
	 *
	 * @return The connection release mode.
	 */
	public ConnectionReleaseMode getConnectionReleaseMode();

	/**
	 * Should transactions be auto joined?  Generally this is only a concern for CMT transactions.  The default
	 * should be to auto join.  JPA defines an explicit operation for joining a CMT transaction.
	 *
	 * @return Should we automatically join transactions
	 */
	public boolean shouldAutoJoinTransaction();

	/**
	 * Should session automatically be closed after transaction completion in this context?
	 *
	 * @return {@literal true}/{@literal false} appropriately.
	 */
	public boolean isAutoCloseSessionEnabled();

	/**
	 * Is this context already closed?
	 *
	 * @return {@literal true}/{@literal false} appropriately.
	 */
	public boolean isClosed();

	/**
	 * Should flushes only happen manually for this context?
	 *
	 * @return {@literal true}/{@literal false} appropriately.
	 */
	public boolean isFlushModeNever();

	/**
	 * Should before transaction completion processing perform a flush when initiated from JTA synchronization for this
	 * context?
	 *
	 * @return {@literal true}/{@literal false} appropriately.
	 */
	public boolean isFlushBeforeCompletionEnabled();

	/**
	 * Perform a managed flush.
	 */
	public void managedFlush();

	/**
	 * Should JTA synchronization processing perform a automatic close (call to {@link #managedClose} for this
	 * context?
	 * 
	 * @return {@literal true}/{@literal false} appropriately.
	 */
	public boolean shouldAutoClose();

	/**
	 * Perform a managed close.
	 */
	public void managedClose();

	public void afterTransactionBegin(TransactionImplementor hibernateTransaction);

	public void beforeTransactionCompletion(TransactionImplementor hibernateTransaction);

	public void afterTransactionCompletion(TransactionImplementor hibernateTransaction, boolean successful);

	public String onPrepareStatement(String sql);

	public JdbcConnectionAccess getJdbcConnectionAccess();

	public void startPrepareStatement();

	public void endPrepareStatement();

	public void startStatementExecution();

	public void endStatementExecution();

	public void startBatchExecution();

	public void endBatchExecution();
}