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Hibernate's core ORM functionality

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or .
 */
package org.hibernate.internal;

import java.io.Serializable;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Objects;

import org.hibernate.SessionEventListener;
import org.hibernate.engine.jdbc.connections.spi.ConnectionProvider;
import org.hibernate.engine.jdbc.connections.spi.JdbcConnectionAccess;

/**
 * @author Steve Ebersole
 */
public class NonContextualJdbcConnectionAccess implements JdbcConnectionAccess, Serializable {
	private final SessionEventListener listener;
	private final ConnectionProvider connectionProvider;

	public NonContextualJdbcConnectionAccess(
			SessionEventListener listener,
			ConnectionProvider connectionProvider) {
		Objects.requireNonNull( listener );
		Objects.requireNonNull( connectionProvider );
		this.listener = listener;
		this.connectionProvider = connectionProvider;
	}

	@Override
	public Connection obtainConnection() throws SQLException {
		try {
			listener.jdbcConnectionAcquisitionStart();
			return connectionProvider.getConnection();
		}
		finally {
			listener.jdbcConnectionAcquisitionEnd();
		}
	}

	@Override
	public void releaseConnection(Connection connection) throws SQLException {
		try {
			listener.jdbcConnectionReleaseStart();
			connectionProvider.closeConnection( connection );
		}
		finally {
			listener.jdbcConnectionReleaseEnd();
		}
	}

	@Override
	public boolean supportsAggressiveRelease() {
		return connectionProvider.supportsAggressiveRelease();
	}
}