Laravel version update

Laravel version update

vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/Driver.php

@@ -0,0 +1,72 @@
+<?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
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\DBAL\Driver\OCI8;
+
+use Doctrine\DBAL\DBALException;
+use Doctrine\DBAL\Driver\AbstractOracleDriver;
+use const OCI_DEFAULT;
+
+/**
+ * A Doctrine DBAL driver for the Oracle OCI8 PHP extensions.
+ *
+ * @author Roman Borschel <roman@code-factory.org>
+ * @since 2.0
+ */
+class Driver extends AbstractOracleDriver
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function connect(array $params, $username = null, $password = null, array $driverOptions = [])
+    {
+        try {
+            return new OCI8Connection(
+                $username,
+                $password,
+                $this->_constructDsn($params),
+                $params['charset'] ?? null,
+                $params['sessionMode'] ?? OCI_DEFAULT,
+                $params['persistent'] ?? false
+            );
+        } catch (OCI8Exception $e) {
+            throw DBALException::driverException($this, $e);
+        }
+    }
+
+    /**
+     * Constructs the Oracle DSN.
+     *
+     * @param array $params
+     *
+     * @return string The DSN.
+     */
+    protected function _constructDsn(array $params)
+    {
+        return $this->getEasyConnectString($params);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'oci8';
+    }
+}

vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Connection.php

@@ -0,0 +1,249 @@
+<?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
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\DBAL\Driver\OCI8;
+
+use Doctrine\DBAL\Driver\Connection;
+use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
+use Doctrine\DBAL\ParameterType;
+use const OCI_COMMIT_ON_SUCCESS;
+use const OCI_DEFAULT;
+use const OCI_NO_AUTO_COMMIT;
+use function addcslashes;
+use function define;
+use function defined;
+use function func_get_args;
+use function is_float;
+use function is_int;
+use function oci_commit;
+use function oci_connect;
+use function oci_error;
+use function oci_pconnect;
+use function oci_rollback;
+use function oci_server_version;
+use function preg_match;
+use function sprintf;
+use function str_replace;
+
+/**
+ * OCI8 implementation of the Connection interface.
+ *
+ * @since 2.0
+ */
+class OCI8Connection implements Connection, ServerInfoAwareConnection
+{
+    /**
+     * @var resource
+     */
+    protected $dbh;
+
+    /**
+     * @var int
+     */
+    protected $executeMode = OCI_COMMIT_ON_SUCCESS;
+
+    /**
+     * Creates a Connection to an Oracle Database using oci8 extension.
+     *
+     * @param string      $username
+     * @param string      $password
+     * @param string      $db
+     * @param string|null $charset
+     * @param int         $sessionMode
+     * @param bool        $persistent
+     *
+     * @throws OCI8Exception
+     */
+    public function __construct($username, $password, $db, $charset = null, $sessionMode = OCI_DEFAULT, $persistent = false)
+    {
+        if (!defined('OCI_NO_AUTO_COMMIT')) {
+            define('OCI_NO_AUTO_COMMIT', 0);
+        }
+
+        $this->dbh = $persistent
+            ? @oci_pconnect($username, $password, $db, $charset, $sessionMode)
+            : @oci_connect($username, $password, $db, $charset, $sessionMode);
+
+        if ( ! $this->dbh) {
+            throw OCI8Exception::fromErrorInfo(oci_error());
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws \UnexpectedValueException if the version string returned by the database server
+     *                                   does not contain a parsable version number.
+     */
+    public function getServerVersion()
+    {
+        if ( ! preg_match('/\s+(\d+\.\d+\.\d+\.\d+\.\d+)\s+/', oci_server_version($this->dbh), $version)) {
+            throw new \UnexpectedValueException(
+                sprintf(
+                    'Unexpected database version string "%s". Cannot parse an appropriate version number from it. ' .
+                    'Please report this database version string to the Doctrine team.',
+                    oci_server_version($this->dbh)
+                )
+            );
+        }
+
+        return $version[1];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function requiresQueryForServerVersion()
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prepare($prepareString)
+    {
+        return new OCI8Statement($this->dbh, $prepareString, $this);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function query()
+    {
+        $args = func_get_args();
+        $sql = $args[0];
+        //$fetchMode = $args[1];
+        $stmt = $this->prepare($sql);
+        $stmt->execute();
+
+        return $stmt;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function quote($value, $type = ParameterType::STRING)
+    {
+        if (is_int($value) || is_float($value)) {
+            return $value;
+        }
+        $value = str_replace("'", "''", $value);
+
+        return "'" . addcslashes($value, "\000\n\r\\\032") . "'";
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function exec($statement)
+    {
+        $stmt = $this->prepare($statement);
+        $stmt->execute();
+
+        return $stmt->rowCount();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function lastInsertId($name = null)
+    {
+        if ($name === null) {
+            return false;
+        }
+
+        $sql    = 'SELECT ' . $name . '.CURRVAL FROM DUAL';
+        $stmt   = $this->query($sql);
+        $result = $stmt->fetchColumn();
+
+        if ($result === false) {
+            throw new OCI8Exception("lastInsertId failed: Query was executed but no result was returned.");
+        }
+
+        return (int) $result;
+    }
+
+    /**
+     * Returns the current execution mode.
+     *
+     * @return int
+     */
+    public function getExecuteMode()
+    {
+        return $this->executeMode;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function beginTransaction()
+    {
+        $this->executeMode = OCI_NO_AUTO_COMMIT;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        if (!oci_commit($this->dbh)) {
+            throw OCI8Exception::fromErrorInfo($this->errorInfo());
+        }
+        $this->executeMode = OCI_COMMIT_ON_SUCCESS;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rollBack()
+    {
+        if (!oci_rollback($this->dbh)) {
+            throw OCI8Exception::fromErrorInfo($this->errorInfo());
+        }
+        $this->executeMode = OCI_COMMIT_ON_SUCCESS;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function errorCode()
+    {
+        $error = oci_error($this->dbh);
+        if ($error !== false) {
+            $error = $error['code'];
+        }
+
+        return $error;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function errorInfo()
+    {
+        return oci_error($this->dbh);
+    }
+}

vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Exception.php

@@ -0,0 +1,35 @@
+<?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
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\DBAL\Driver\OCI8;
+
+use Doctrine\DBAL\Driver\AbstractDriverException;
+
+class OCI8Exception extends AbstractDriverException
+{
+    /**
+     * @param array $error
+     *
+     * @return \Doctrine\DBAL\Driver\OCI8\OCI8Exception
+     */
+    public static function fromErrorInfo($error)
+    {
+        return new self($error['message'], null, $error['code']);
+    }
+}

vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php

@@ -0,0 +1,534 @@
+<?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
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\DBAL\Driver\OCI8;
+
+use Doctrine\DBAL\Driver\Statement;
+use Doctrine\DBAL\Driver\StatementIterator;
+use Doctrine\DBAL\FetchMode;
+use Doctrine\DBAL\ParameterType;
+use IteratorAggregate;
+use const OCI_ASSOC;
+use const OCI_B_BIN;
+use const OCI_B_BLOB;
+use const OCI_BOTH;
+use const OCI_D_LOB;
+use const OCI_FETCHSTATEMENT_BY_COLUMN;
+use const OCI_FETCHSTATEMENT_BY_ROW;
+use const OCI_NUM;
+use const OCI_RETURN_LOBS;
+use const OCI_RETURN_NULLS;
+use const OCI_TEMP_BLOB;
+use const PREG_OFFSET_CAPTURE;
+use const SQLT_CHR;
+use function array_key_exists;
+use function count;
+use function implode;
+use function is_numeric;
+use function oci_bind_by_name;
+use function oci_cancel;
+use function oci_error;
+use function oci_execute;
+use function oci_fetch_all;
+use function oci_fetch_array;
+use function oci_fetch_object;
+use function oci_new_descriptor;
+use function oci_num_fields;
+use function oci_num_rows;
+use function oci_parse;
+use function preg_match;
+use function preg_quote;
+use function sprintf;
+use function substr;
+
+/**
+ * The OCI8 implementation of the Statement interface.
+ *
+ * @since 2.0
+ * @author Roman Borschel <roman@code-factory.org>
+ */
+class OCI8Statement implements IteratorAggregate, Statement
+{
+    /**
+     * @var resource
+     */
+    protected $_dbh;
+
+    /**
+     * @var resource
+     */
+    protected $_sth;
+
+    /**
+     * @var \Doctrine\DBAL\Driver\OCI8\OCI8Connection
+     */
+    protected $_conn;
+
+    /**
+     * @var string
+     */
+    protected static $_PARAM = ':param';
+
+    /**
+     * @var array
+     */
+    protected static $fetchModeMap = [
+        FetchMode::MIXED       => OCI_BOTH,
+        FetchMode::ASSOCIATIVE => OCI_ASSOC,
+        FetchMode::NUMERIC     => OCI_NUM,
+        FetchMode::COLUMN      => OCI_NUM,
+    ];
+
+    /**
+     * @var int
+     */
+    protected $_defaultFetchMode = FetchMode::MIXED;
+
+    /**
+     * @var array
+     */
+    protected $_paramMap = [];
+
+    /**
+     * Holds references to bound parameter values.
+     *
+     * This is a new requirement for PHP7's oci8 extension that prevents bound values from being garbage collected.
+     *
+     * @var array
+     */
+    private $boundValues = [];
+
+    /**
+     * Indicates whether the statement is in the state when fetching results is possible
+     *
+     * @var bool
+     */
+    private $result = false;
+
+    /**
+     * Creates a new OCI8Statement that uses the given connection handle and SQL statement.
+     *
+     * @param resource                                  $dbh       The connection handle.
+     * @param string                                    $statement The SQL statement.
+     * @param \Doctrine\DBAL\Driver\OCI8\OCI8Connection $conn
+     */
+    public function __construct($dbh, $statement, OCI8Connection $conn)
+    {
+        list($statement, $paramMap) = self::convertPositionalToNamedPlaceholders($statement);
+        $this->_sth = oci_parse($dbh, $statement);
+        $this->_dbh = $dbh;
+        $this->_paramMap = $paramMap;
+        $this->_conn = $conn;
+    }
+
+    /**
+     * Converts positional (?) into named placeholders (:param<num>).
+     *
+     * Oracle does not support positional parameters, hence this method converts all
+     * positional parameters into artificially named parameters. Note that this conversion
+     * is not perfect. All question marks (?) in the original statement are treated as
+     * placeholders and converted to a named parameter.
+     *
+     * The algorithm uses a state machine with two possible states: InLiteral and NotInLiteral.
+     * Question marks inside literal strings are therefore handled correctly by this method.
+     * This comes at a cost, the whole sql statement has to be looped over.
+     *
+     * @todo extract into utility class in Doctrine\DBAL\Util namespace
+     * @todo review and test for lost spaces. we experienced missing spaces with oci8 in some sql statements.
+     *
+     * @param string $statement The SQL statement to convert.
+     *
+     * @return array [0] => the statement value (string), [1] => the paramMap value (array).
+     * @throws \Doctrine\DBAL\Driver\OCI8\OCI8Exception
+     */
+    public static function convertPositionalToNamedPlaceholders($statement)
+    {
+        $fragmentOffset = $tokenOffset = 0;
+        $fragments = $paramMap = [];
+        $currentLiteralDelimiter = null;
+
+        do {
+            if (!$currentLiteralDelimiter) {
+                $result = self::findPlaceholderOrOpeningQuote(
+                    $statement,
+                    $tokenOffset,
+                    $fragmentOffset,
+                    $fragments,
+                    $currentLiteralDelimiter,
+                    $paramMap
+                );
+            } else {
+                $result = self::findClosingQuote($statement, $tokenOffset, $currentLiteralDelimiter);
+            }
+        } while ($result);
+
+        if ($currentLiteralDelimiter) {
+            throw new OCI8Exception(sprintf(
+                'The statement contains non-terminated string literal starting at offset %d',
+                $tokenOffset - 1
+            ));
+        }
+
+        $fragments[] = substr($statement, $fragmentOffset);
+        $statement = implode('', $fragments);
+
+        return [$statement, $paramMap];
+    }
+
+    /**
+     * Finds next placeholder or opening quote.
+     *
+     * @param string             $statement               The SQL statement to parse
+     * @param string             $tokenOffset             The offset to start searching from
+     * @param int                $fragmentOffset          The offset to build the next fragment from
+     * @param string[]           $fragments               Fragments of the original statement not containing placeholders
+     * @param string|null        $currentLiteralDelimiter The delimiter of the current string literal
+     *                                                    or NULL if not currently in a literal
+     * @param array<int, string> $paramMap                Mapping of the original parameter positions to their named replacements
+     * @return bool Whether the token was found
+     */
+    private static function findPlaceholderOrOpeningQuote(
+        $statement,
+        &$tokenOffset,
+        &$fragmentOffset,
+        &$fragments,
+        &$currentLiteralDelimiter,
+        &$paramMap
+    ) {
+        $token = self::findToken($statement, $tokenOffset, '/[?\'"]/');
+
+        if (!$token) {
+            return false;
+        }
+
+        if ($token === '?') {
+            $position = count($paramMap) + 1;
+            $param = ':param' . $position;
+            $fragments[] = substr($statement, $fragmentOffset, $tokenOffset - $fragmentOffset);
+            $fragments[] = $param;
+            $paramMap[$position] = $param;
+            $tokenOffset += 1;
+            $fragmentOffset = $tokenOffset;
+
+            return true;
+        }
+
+        $currentLiteralDelimiter = $token;
+        ++$tokenOffset;
+
+        return true;
+    }
+
+    /**
+     * Finds closing quote
+     *
+     * @param string      $statement               The SQL statement to parse
+     * @param string      $tokenOffset             The offset to start searching from
+     * @param string|null $currentLiteralDelimiter The delimiter of the current string literal
+     *                                             or NULL if not currently in a literal
+     * @return bool Whether the token was found
+     */
+    private static function findClosingQuote(
+        $statement,
+        &$tokenOffset,
+        &$currentLiteralDelimiter
+    ) {
+        $token = self::findToken(
+            $statement,
+            $tokenOffset,
+            '/' . preg_quote($currentLiteralDelimiter, '/') . '/'
+        );
+
+        if (!$token) {
+            return false;
+        }
+
+        $currentLiteralDelimiter = false;
+        ++$tokenOffset;
+
+        return true;
+    }
+
+    /**
+     * Finds the token described by regex starting from the given offset. Updates the offset with the position
+     * where the token was found.
+     *
+     * @param string $statement The SQL statement to parse
+     * @param string $offset    The offset to start searching from
+     * @param string $regex     The regex containing token pattern
+     * @return string|null Token or NULL if not found
+     */
+    private static function findToken($statement, &$offset, $regex)
+    {
+        if (preg_match($regex, $statement, $matches, PREG_OFFSET_CAPTURE, $offset)) {
+            $offset = $matches[0][1];
+            return $matches[0][0];
+        }
+
+        return null;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function bindValue($param, $value, $type = ParameterType::STRING)
+    {
+        return $this->bindParam($param, $value, $type, null);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null)
+    {
+        $column = $this->_paramMap[$column] ?? $column;
+
+        if ($type === ParameterType::LARGE_OBJECT) {
+            $lob = oci_new_descriptor($this->_dbh, OCI_D_LOB);
+            $lob->writeTemporary($variable, OCI_TEMP_BLOB);
+
+            $variable =& $lob;
+        }
+
+        $this->boundValues[$column] =& $variable;
+
+        return oci_bind_by_name(
+            $this->_sth,
+            $column,
+            $variable,
+            $length ?? -1,
+            $this->convertParameterType($type)
+        );
+    }
+
+    /**
+     * Converts DBAL parameter type to oci8 parameter type
+     */
+    private function convertParameterType(int $type) : int
+    {
+        switch ($type) {
+            case ParameterType::BINARY:
+                return OCI_B_BIN;
+
+            case ParameterType::LARGE_OBJECT:
+                return OCI_B_BLOB;
+
+            default:
+                return SQLT_CHR;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function closeCursor()
+    {
+        // not having the result means there's nothing to close
+        if (!$this->result) {
+            return true;
+        }
+
+        oci_cancel($this->_sth);
+
+        $this->result = false;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function columnCount()
+    {
+        return oci_num_fields($this->_sth);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function errorCode()
+    {
+        $error = oci_error($this->_sth);
+        if ($error !== false) {
+            $error = $error['code'];
+        }
+
+        return $error;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function errorInfo()
+    {
+        return oci_error($this->_sth);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function execute($params = null)
+    {
+        if ($params) {
+            $hasZeroIndex = array_key_exists(0, $params);
+            foreach ($params as $key => $val) {
+                if ($hasZeroIndex && is_numeric($key)) {
+                    $this->bindValue($key + 1, $val);
+                } else {
+                    $this->bindValue($key, $val);
+                }
+            }
+        }
+
+        $ret = @oci_execute($this->_sth, $this->_conn->getExecuteMode());
+        if ( ! $ret) {
+            throw OCI8Exception::fromErrorInfo($this->errorInfo());
+        }
+
+        $this->result = true;
+
+        return $ret;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null)
+    {
+        $this->_defaultFetchMode = $fetchMode;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getIterator()
+    {
+        return new StatementIterator($this);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function fetch($fetchMode = null, $cursorOrientation = \PDO::FETCH_ORI_NEXT, $cursorOffset = 0)
+    {
+        // do not try fetching from the statement if it's not expected to contain result
+        // in order to prevent exceptional situation
+        if (!$this->result) {
+            return false;
+        }
+
+        $fetchMode = $fetchMode ?: $this->_defaultFetchMode;
+
+        if ($fetchMode === FetchMode::COLUMN) {
+            return $this->fetchColumn();
+        }
+
+        if ($fetchMode === FetchMode::STANDARD_OBJECT) {
+            return oci_fetch_object($this->_sth);
+        }
+
+        if (! isset(self::$fetchModeMap[$fetchMode])) {
+            throw new \InvalidArgumentException("Invalid fetch style: " . $fetchMode);
+        }
+
+        return oci_fetch_array(
+            $this->_sth,
+            self::$fetchModeMap[$fetchMode] | OCI_RETURN_NULLS | OCI_RETURN_LOBS
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function fetchAll($fetchMode = null, $fetchArgument = null, $ctorArgs = null)
+    {
+        $fetchMode = $fetchMode ?: $this->_defaultFetchMode;
+
+        $result = [];
+
+        if ($fetchMode === FetchMode::STANDARD_OBJECT) {
+            while ($row = $this->fetch($fetchMode)) {
+                $result[] = $row;
+            }
+
+            return $result;
+        }
+
+        if ( ! isset(self::$fetchModeMap[$fetchMode])) {
+            throw new \InvalidArgumentException("Invalid fetch style: " . $fetchMode);
+        }
+
+        if (self::$fetchModeMap[$fetchMode] === OCI_BOTH) {
+            while ($row = $this->fetch($fetchMode)) {
+                $result[] = $row;
+            }
+        } else {
+            $fetchStructure = OCI_FETCHSTATEMENT_BY_ROW;
+
+            if ($fetchMode === FetchMode::COLUMN) {
+                $fetchStructure = OCI_FETCHSTATEMENT_BY_COLUMN;
+            }
+
+            // do not try fetching from the statement if it's not expected to contain result
+            // in order to prevent exceptional situation
+            if (!$this->result) {
+                return [];
+            }
+
+            oci_fetch_all($this->_sth, $result, 0, -1,
+                self::$fetchModeMap[$fetchMode] | OCI_RETURN_NULLS | $fetchStructure | OCI_RETURN_LOBS);
+
+            if ($fetchMode === FetchMode::COLUMN) {
+                $result = $result[0];
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function fetchColumn($columnIndex = 0)
+    {
+        // do not try fetching from the statement if it's not expected to contain result
+        // in order to prevent exceptional situation
+        if (!$this->result) {
+            return false;
+        }
+
+        $row = oci_fetch_array($this->_sth, OCI_NUM | OCI_RETURN_NULLS | OCI_RETURN_LOBS);
+
+        if (false === $row) {
+            return false;
+        }
+
+        return $row[$columnIndex] ?? null;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rowCount()
+    {
+        return oci_num_rows($this->_sth);
+    }
+}