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<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
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 * and is licensed under the MIT license. For more information, see
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 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\DBAL\Driver\OCI8;

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use Doctrine\DBAL\DBALException;
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use Doctrine\DBAL\Driver\AbstractOracleDriver;
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/**
 * A Doctrine DBAL driver for the Oracle OCI8 PHP extensions.
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 *
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 * @author Roman Borschel <roman@code-factory.org>
 * @since 2.0
 */
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class Driver extends AbstractOracleDriver
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{
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    /**
     * {@inheritdoc}
     */
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    public function connect(array $params, $username = null, $password = null, array $driverOptions = array())
    {
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        try {
            return new OCI8Connection(
                $username,
                $password,
                $this->_constructDsn($params),
                isset($params['charset']) ? $params['charset'] : null,
                isset($params['sessionMode']) ? $params['sessionMode'] : OCI_DEFAULT,
                isset($params['persistent']) ? $params['persistent'] : false
            );
        } catch (OCI8Exception $e) {
            throw DBALException::driverException($this, $e);
        }
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    }

    /**
     * Constructs the Oracle DSN.
     *
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     * @param array $params
     *
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     * @return string The DSN.
     */
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    protected function _constructDsn(array $params)
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    {
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        return $this->getEasyConnectString($params);
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    }

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    /**
     * {@inheritdoc}
     */
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    public function getName()
    {
        return 'oci8';
    }
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}