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<?php/*** CakePHP(tm) : Rapid Development Framework (http://cakephp.org)* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)** Licensed under The MIT License* For full copyright and license information, please see the LICENSE.txt* Redistributions of files must retain the above copyright notice.** @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)* @link http://cakephp.org CakePHP(tm) Project* @package Cake.Model.Datasource.Database* @since CakePHP(tm) v 0.9.1.114* @license http://www.opensource.org/licenses/mit-license.php MIT License*/App::uses('DboSource', 'Model/Datasource');/*** PostgreSQL layer for DBO.** @package Cake.Model.Datasource.Database*/class Postgres extends DboSource {/*** Driver description** @var string*/public $description = "PostgreSQL DBO Driver";/*** Base driver configuration settings. Merged with user settings.** @var array*/protected $_baseConfig = array('persistent' => true,'host' => 'localhost','login' => 'root','password' => '','database' => 'cake','schema' => 'public','port' => 5432,'encoding' => '','sslmode' => 'allow','flags' => array());/*** Columns** @var array*/public $columns = array('primary_key' => array('name' => 'serial NOT NULL'),'string' => array('name' => 'varchar', 'limit' => '255'),'text' => array('name' => 'text'),'integer' => array('name' => 'integer', 'formatter' => 'intval'),'biginteger' => array('name' => 'bigint', 'limit' => '20'),'float' => array('name' => 'float', 'formatter' => 'floatval'),'decimal' => array('name' => 'decimal', 'formatter' => 'floatval'),'datetime' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'),'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'),'binary' => array('name' => 'bytea'),'boolean' => array('name' => 'boolean'),'number' => array('name' => 'numeric'),'inet' => array('name' => 'inet'));/*** Starting Quote** @var string*/public $startQuote = '"';/*** Ending Quote** @var string*/public $endQuote = '"';/*** Contains mappings of custom auto-increment sequences, if a table uses a sequence name* other than what is dictated by convention.** @var array*/protected $_sequenceMap = array();/*** The set of valid SQL operations usable in a WHERE statement** @var array*/protected $_sqlOps = array('like', 'ilike', 'or', 'not', 'in', 'between', '~', '~\*', '\!~', '\!~\*', 'similar to');/*** Connects to the database using options in the given configuration array.** @return bool True if successfully connected.* @throws MissingConnectionException*/public function connect() {$config = $this->config;$this->connected = false;$flags = $config['flags'] + array(PDO::ATTR_PERSISTENT => $config['persistent'],PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION);try {$this->_connection = new PDO("pgsql:host={$config['host']};port={$config['port']};dbname={$config['database']};sslmode={$config['sslmode']}",$config['login'],$config['password'],$flags);$this->connected = true;if (!empty($config['encoding'])) {$this->setEncoding($config['encoding']);}if (!empty($config['schema'])) {$this->_execute('SET search_path TO "' . $config['schema'] . '"');}if (!empty($config['settings'])) {foreach ($config['settings'] as $key => $value) {$this->_execute("SET $key TO $value");}}} catch (PDOException $e) {throw new MissingConnectionException(array('class' => get_class($this),'message' => $e->getMessage()));}return $this->connected;}/*** Check if PostgreSQL is enabled/loaded** @return bool*/public function enabled() {return in_array('pgsql', PDO::getAvailableDrivers());}/*** Returns an array of tables in the database. If there are no tables, an error is raised and the application exits.** @param mixed $data The sources to list.* @return array Array of table names in the database*/public function listSources($data = null) {$cache = parent::listSources();if ($cache) {return $cache;}$schema = $this->config['schema'];$sql = "SELECT table_name as name FROM INFORMATION_SCHEMA.tables WHERE table_schema = ?";$result = $this->_execute($sql, array($schema));if (!$result) {return array();}$tables = array();foreach ($result as $item) {$tables[] = $item->name;}$result->closeCursor();parent::listSources($tables);return $tables;}/*** Returns an array of the fields in given table name.** @param Model|string $model Name of database table to inspect* @return array Fields in table. Keys are name and type*/public function describe($model) {$table = $this->fullTableName($model, false, false);$fields = parent::describe($table);$this->_sequenceMap[$table] = array();$cols = null;if ($fields === null) {$cols = $this->_execute("SELECT DISTINCT table_schema AS schema, column_name AS name, data_type AS type, is_nullable AS null,column_default AS default, ordinal_position AS position, character_maximum_length AS char_length,character_octet_length AS oct_length FROM information_schema.columnsWHERE table_name = ? AND table_schema = ? ORDER BY position",array($table, $this->config['schema']));// @codingStandardsIgnoreStart// Postgres columns don't match the coding standards.foreach ($cols as $c) {$type = $c->type;if (!empty($c->oct_length) && $c->char_length === null) {if ($c->type === 'character varying') {$length = null;$type = 'text';} elseif ($c->type === 'uuid') {$length = 36;} else {$length = (int)$c->oct_length;}} elseif (!empty($c->char_length)) {$length = (int)$c->char_length;} else {$length = $this->length($c->type);}if (empty($length)) {$length = null;}$fields[$c->name] = array('type' => $this->column($type),'null' => ($c->null === 'NO' ? false : true),'default' => preg_replace("/^'(.*)'$/","$1",preg_replace('/::.*/', '', $c->default)),'length' => $length);if ($model instanceof Model) {if ($c->name === $model->primaryKey) {$fields[$c->name]['key'] = 'primary';if ($fields[$c->name]['type'] !== 'string') {$fields[$c->name]['length'] = 11;}}}if ($fields[$c->name]['default'] === 'NULL' ||$c->default === null ||preg_match('/nextval\([\'"]?([\w.]+)/', $c->default, $seq)) {$fields[$c->name]['default'] = null;if (!empty($seq) && isset($seq[1])) {if (strpos($seq[1], '.') === false) {$sequenceName = $c->schema . '.' . $seq[1];} else {$sequenceName = $seq[1];}$this->_sequenceMap[$table][$c->name] = $sequenceName;}}if ($fields[$c->name]['type'] === 'timestamp' && $fields[$c->name]['default'] === '') {$fields[$c->name]['default'] = null;}if ($fields[$c->name]['type'] === 'boolean' && !empty($fields[$c->name]['default'])) {$fields[$c->name]['default'] = constant($fields[$c->name]['default']);}}$this->_cacheDescription($table, $fields);}// @codingStandardsIgnoreEndif (isset($model->sequence)) {$this->_sequenceMap[$table][$model->primaryKey] = $model->sequence;}if ($cols) {$cols->closeCursor();}return $fields;}/*** Returns the ID generated from the previous INSERT operation.** @param string $source Name of the database table* @param string $field Name of the ID database field. Defaults to "id"* @return int*/public function lastInsertId($source = null, $field = 'id') {$seq = $this->getSequence($source, $field);return $this->_connection->lastInsertId($seq);}/*** Gets the associated sequence for the given table/field** @param string|Model $table Either a full table name (with prefix) as a string, or a model object* @param string $field Name of the ID database field. Defaults to "id"* @return string The associated sequence name from the sequence map, defaults to "{$table}_{$field}_seq"*/public function getSequence($table, $field = 'id') {if (is_object($table)) {$table = $this->fullTableName($table, false, false);}if (!isset($this->_sequenceMap[$table])) {$this->describe($table);}if (isset($this->_sequenceMap[$table][$field])) {return $this->_sequenceMap[$table][$field];}return "{$table}_{$field}_seq";}/*** Reset a sequence based on the MAX() value of $column. Useful* for resetting sequences after using insertMulti().** @param string $table The name of the table to update.* @param string $column The column to use when resetting the sequence value,* the sequence name will be fetched using Postgres::getSequence();* @return bool success.*/public function resetSequence($table, $column) {$tableName = $this->fullTableName($table, false, false);$fullTable = $this->fullTableName($table);$sequence = $this->value($this->getSequence($tableName, $column));$column = $this->name($column);$this->execute("SELECT setval($sequence, (SELECT MAX($column) FROM $fullTable))");return true;}/*** Deletes all the records in a table and drops all associated auto-increment sequences** @param string|Model $table A string or model class representing the table to be truncated* @param bool $reset true for resetting the sequence, false to leave it as is.* and if 1, sequences are not modified* @return bool SQL TRUNCATE TABLE statement, false if not applicable.*/public function truncate($table, $reset = false) {$table = $this->fullTableName($table, false, false);if (!isset($this->_sequenceMap[$table])) {$cache = $this->cacheSources;$this->cacheSources = false;$this->describe($table);$this->cacheSources = $cache;}if ($this->execute('DELETE FROM ' . $this->fullTableName($table))) {if (isset($this->_sequenceMap[$table]) && $reset != true) {foreach ($this->_sequenceMap[$table] as $sequence) {$quoted = $this->name($sequence);$this->_execute("ALTER SEQUENCE {$quoted} RESTART WITH 1");}}return true;}return false;}/*** Prepares field names to be quoted by parent** @param string $data The name to format.* @return string SQL field*/public function name($data) {if (is_string($data)) {$data = str_replace('"__"', '__', $data);}return parent::name($data);}/*** Generates the fields list of an SQL query.** @param Model $model The model to get fields for.* @param string $alias Alias table name.* @param mixed $fields The list of fields to get.* @param bool $quote Whether or not to quote identifiers.* @return array*/public function fields(Model $model, $alias = null, $fields = array(), $quote = true) {if (empty($alias)) {$alias = $model->alias;}$fields = parent::fields($model, $alias, $fields, false);if (!$quote) {return $fields;}$count = count($fields);if ($count >= 1 && !preg_match('/^\s*COUNT\(\*/', $fields[0])) {$result = array();for ($i = 0; $i < $count; $i++) {if (!preg_match('/^.+\\(.*\\)/', $fields[$i]) && !preg_match('/\s+AS\s+/', $fields[$i])) {if (substr($fields[$i], -1) === '*') {if (strpos($fields[$i], '.') !== false && $fields[$i] != $alias . '.*') {$build = explode('.', $fields[$i]);$AssociatedModel = $model->{$build[0]};} else {$AssociatedModel = $model;}$_fields = $this->fields($AssociatedModel, $AssociatedModel->alias, array_keys($AssociatedModel->schema()));$result = array_merge($result, $_fields);continue;}$prepend = '';if (strpos($fields[$i], 'DISTINCT') !== false) {$prepend = 'DISTINCT ';$fields[$i] = trim(str_replace('DISTINCT', '', $fields[$i]));}if (strrpos($fields[$i], '.') === false) {$fields[$i] = $prepend . $this->name($alias) . '.' . $this->name($fields[$i]) . ' AS ' . $this->name($alias . '__' . $fields[$i]);} else {$build = explode('.', $fields[$i]);$fields[$i] = $prepend . $this->name($build[0]) . '.' . $this->name($build[1]) . ' AS ' . $this->name($build[0] . '__' . $build[1]);}} else {$fields[$i] = preg_replace_callback('/\(([\s\.\w]+)\)/', array(&$this, '_quoteFunctionField'), $fields[$i]);}$result[] = $fields[$i];}return $result;}return $fields;}/*** Auxiliary function to quote matched `(Model.fields)` from a preg_replace_callback call* Quotes the fields in a function call.** @param string $match matched string* @return string quoted string*/protected function _quoteFunctionField($match) {$prepend = '';if (strpos($match[1], 'DISTINCT') !== false) {$prepend = 'DISTINCT ';$match[1] = trim(str_replace('DISTINCT', '', $match[1]));}$constant = preg_match('/^\d+|NULL|FALSE|TRUE$/i', $match[1]);if (!$constant && strpos($match[1], '.') === false) {$match[1] = $this->name($match[1]);} elseif (!$constant) {$parts = explode('.', $match[1]);if (!Hash::numeric($parts)) {$match[1] = $this->name($match[1]);}}return '(' . $prepend . $match[1] . ')';}/*** Returns an array of the indexes in given datasource name.** @param string $model Name of model to inspect* @return array Fields in table. Keys are column and unique*/public function index($model) {$index = array();$table = $this->fullTableName($model, false, false);if ($table) {$indexes = $this->query("SELECT c2.relname, i.indisprimary, i.indisunique, i.indisclustered, i.indisvalid, pg_catalog.pg_get_indexdef(i.indexrelid, 0, true) as statement, c2.reltablespaceFROM pg_catalog.pg_class c, pg_catalog.pg_class c2, pg_catalog.pg_index iWHERE c.oid = (SELECT c.oidFROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespaceWHERE c.relname ~ '^(" . $table . ")$'AND pg_catalog.pg_table_is_visible(c.oid)AND n.nspname ~ '^(" . $this->config['schema'] . ")$')AND c.oid = i.indrelid AND i.indexrelid = c2.oidORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname", false);foreach ($indexes as $info) {$key = array_pop($info);if ($key['indisprimary']) {$key['relname'] = 'PRIMARY';}preg_match('/\(([^\)]+)\)/', $key['statement'], $indexColumns);$parsedColumn = $indexColumns[1];if (strpos($indexColumns[1], ',') !== false) {$parsedColumn = explode(', ', $indexColumns[1]);}$index[$key['relname']]['unique'] = $key['indisunique'];$index[$key['relname']]['column'] = $parsedColumn;}}return $index;}/*** Alter the Schema of a table.** @param array $compare Results of CakeSchema::compare()* @param string $table name of the table* @return array*/public function alterSchema($compare, $table = null) {if (!is_array($compare)) {return false;}$out = '';$colList = array();foreach ($compare as $curTable => $types) {$indexes = $colList = array();if (!$table || $table === $curTable) {$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";foreach ($types as $type => $column) {if (isset($column['indexes'])) {$indexes[$type] = $column['indexes'];unset($column['indexes']);}switch ($type) {case 'add':foreach ($column as $field => $col) {$col['name'] = $field;$colList[] = 'ADD COLUMN ' . $this->buildColumn($col);}break;case 'drop':foreach ($column as $field => $col) {$col['name'] = $field;$colList[] = 'DROP COLUMN ' . $this->name($field);}break;case 'change':$schema = $this->describe($curTable);foreach ($column as $field => $col) {if (!isset($col['name'])) {$col['name'] = $field;}$original = $schema[$field];$fieldName = $this->name($field);$default = isset($col['default']) ? $col['default'] : null;$nullable = isset($col['null']) ? $col['null'] : null;$boolToInt = $original['type'] === 'boolean' && $col['type'] === 'integer';unset($col['default'], $col['null']);if ($field !== $col['name']) {$newName = $this->name($col['name']);$out .= "\tRENAME {$fieldName} TO {$newName};\n";$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";$fieldName = $newName;}if ($boolToInt) {$colList[] = 'ALTER COLUMN ' . $fieldName . ' SET DEFAULT NULL';$colList[] = 'ALTER COLUMN ' . $fieldName . ' TYPE ' . str_replace(array($fieldName, 'NOT NULL'), '', $this->buildColumn($col)) . ' USING CASE WHEN TRUE THEN 1 ELSE 0 END';} else {if ($original['type'] === 'text' && $col['type'] === 'integer') {$colList[] = 'ALTER COLUMN ' . $fieldName . ' TYPE ' . str_replace(array($fieldName, 'NOT NULL'), '', $this->buildColumn($col)) . " USING cast({$fieldName} as INTEGER)";} else {$colList[] = 'ALTER COLUMN ' . $fieldName . ' TYPE ' . str_replace(array($fieldName, 'NOT NULL'), '', $this->buildColumn($col));}}if (isset($nullable)) {$nullable = ($nullable) ? 'DROP NOT NULL' : 'SET NOT NULL';$colList[] = 'ALTER COLUMN ' . $fieldName . ' ' . $nullable;}if (isset($default)) {if (!$boolToInt) {$colList[] = 'ALTER COLUMN ' . $fieldName . ' SET DEFAULT ' . $this->value($default, $col['type']);}} else {$colList[] = 'ALTER COLUMN ' . $fieldName . ' DROP DEFAULT';}}break;}}if (isset($indexes['drop']['PRIMARY'])) {$colList[] = 'DROP CONSTRAINT ' . $curTable . '_pkey';}if (isset($indexes['add']['PRIMARY'])) {$cols = $indexes['add']['PRIMARY']['column'];if (is_array($cols)) {$cols = implode(', ', $cols);}$colList[] = 'ADD PRIMARY KEY (' . $cols . ')';}if (!empty($colList)) {$out .= "\t" . implode(",\n\t", $colList) . ";\n\n";} else {$out = '';}$out .= implode(";\n\t", $this->_alterIndexes($curTable, $indexes));}}return $out;}/*** Generate PostgreSQL index alteration statements for a table.** @param string $table Table to alter indexes for* @param array $indexes Indexes to add and drop* @return array Index alteration statements*/protected function _alterIndexes($table, $indexes) {$alter = array();if (isset($indexes['drop'])) {foreach ($indexes['drop'] as $name => $value) {$out = 'DROP ';if ($name === 'PRIMARY') {continue;} else {$out .= 'INDEX ' . $name;}$alter[] = $out;}}if (isset($indexes['add'])) {foreach ($indexes['add'] as $name => $value) {$out = 'CREATE ';if ($name === 'PRIMARY') {continue;} else {if (!empty($value['unique'])) {$out .= 'UNIQUE ';}$out .= 'INDEX ';}if (is_array($value['column'])) {$out .= $name . ' ON ' . $table . ' (' . implode(', ', array_map(array(&$this, 'name'), $value['column'])) . ')';} else {$out .= $name . ' ON ' . $table . ' (' . $this->name($value['column']) . ')';}$alter[] = $out;}}return $alter;}/*** Returns a limit statement in the correct format for the particular database.** @param int $limit Limit of results returned* @param int $offset Offset from which to start results* @return string SQL limit/offset statement*/public function limit($limit, $offset = null) {if ($limit) {$rt = sprintf(' LIMIT %u', $limit);if ($offset) {$rt .= sprintf(' OFFSET %u', $offset);}return $rt;}return null;}/*** Converts database-layer column types to basic types** @param string $real Real database-layer column type (i.e. "varchar(255)")* @return string Abstract column type (i.e. "string")*/public function column($real) {if (is_array($real)) {$col = $real['name'];if (isset($real['limit'])) {$col .= '(' . $real['limit'] . ')';}return $col;}$col = str_replace(')', '', $real);if (strpos($col, '(') !== false) {list($col, $limit) = explode('(', $col);}$floats = array('float', 'float4', 'float8', 'double', 'double precision', 'real');switch (true) {case (in_array($col, array('date', 'time', 'inet', 'boolean'))):return $col;case (strpos($col, 'timestamp') !== false):return 'datetime';case (strpos($col, 'time') === 0):return 'time';case ($col === 'bigint'):return 'biginteger';case (strpos($col, 'int') !== false && $col !== 'interval'):return 'integer';case (strpos($col, 'char') !== false || $col === 'uuid'):return 'string';case (strpos($col, 'text') !== false):return 'text';case (strpos($col, 'bytea') !== false):return 'binary';case ($col === 'decimal' || $col === 'numeric'):return 'decimal';case (in_array($col, $floats)):return 'float';default:return 'text';}}/*** Gets the length of a database-native column description, or null if no length** @param string $real Real database-layer column type (i.e. "varchar(255)")* @return int An integer representing the length of the column*/public function length($real) {$col = str_replace(array(')', 'unsigned'), '', $real);$limit = null;if (strpos($col, '(') !== false) {list($col, $limit) = explode('(', $col);}if ($col === 'uuid') {return 36;}if ($limit) {return (int)$limit;}return null;}/*** resultSet method** @param array &$results The results* @return void*/public function resultSet(&$results) {$this->map = array();$numFields = $results->columnCount();$index = 0;$j = 0;while ($j < $numFields) {$column = $results->getColumnMeta($j);if (strpos($column['name'], '__')) {list($table, $name) = explode('__', $column['name']);$this->map[$index++] = array($table, $name, $column['native_type']);} else {$this->map[$index++] = array(0, $column['name'], $column['native_type']);}$j++;}}/*** Fetches the next row from the current result set** @return array*/public function fetchResult() {if ($row = $this->_result->fetch(PDO::FETCH_NUM)) {$resultRow = array();foreach ($this->map as $index => $meta) {list($table, $column, $type) = $meta;switch ($type) {case 'bool':$resultRow[$table][$column] = $row[$index] === null ? null : $this->boolean($row[$index]);break;case 'binary':case 'bytea':$resultRow[$table][$column] = $row[$index] === null ? null : stream_get_contents($row[$index]);break;default:$resultRow[$table][$column] = $row[$index];}}return $resultRow;}$this->_result->closeCursor();return false;}/*** Translates between PHP boolean values and PostgreSQL boolean values** @param mixed $data Value to be translated* @param bool $quote true to quote a boolean to be used in a query, false to return the boolean value* @return bool Converted boolean value*/public function boolean($data, $quote = false) {switch (true) {case ($data === true || $data === false):$result = $data;break;case ($data === 't' || $data === 'f'):$result = ($data === 't');break;case ($data === 'true' || $data === 'false'):$result = ($data === 'true');break;case ($data === 'TRUE' || $data === 'FALSE'):$result = ($data === 'TRUE');break;default:$result = (bool)$data;}if ($quote) {return ($result) ? 'TRUE' : 'FALSE';}return (bool)$result;}/*** Sets the database encoding** @param mixed $enc Database encoding* @return bool True on success, false on failure*/public function setEncoding($enc) {return $this->_execute('SET NAMES ' . $this->value($enc)) !== false;}/*** Gets the database encoding** @return string The database encoding*/public function getEncoding() {$result = $this->_execute('SHOW client_encoding')->fetch();if ($result === false) {return false;}return (isset($result['client_encoding'])) ? $result['client_encoding'] : false;}/*** Generate a Postgres-native column schema string** @param array $column An array structured like the following:* array('name'=>'value', 'type'=>'value'[, options]),* where options can be 'default', 'length', or 'key'.* @return string*/public function buildColumn($column) {$col = $this->columns[$column['type']];if (!isset($col['length']) && !isset($col['limit'])) {unset($column['length']);}$out = parent::buildColumn($column);$out = preg_replace('/integer\([0-9]+\)/','integer',$out);$out = preg_replace('/bigint\([0-9]+\)/','bigint',$out);$out = str_replace('integer serial', 'serial', $out);$out = str_replace('bigint serial', 'bigserial', $out);if (strpos($out, 'timestamp DEFAULT')) {if (isset($column['null']) && $column['null']) {$out = str_replace('DEFAULT NULL', '', $out);} else {$out = str_replace('DEFAULT NOT NULL', '', $out);}}if (strpos($out, 'DEFAULT DEFAULT')) {if (isset($column['null']) && $column['null']) {$out = str_replace('DEFAULT DEFAULT', 'DEFAULT NULL', $out);} elseif (in_array($column['type'], array('integer', 'float'))) {$out = str_replace('DEFAULT DEFAULT', 'DEFAULT 0', $out);} elseif ($column['type'] === 'boolean') {$out = str_replace('DEFAULT DEFAULT', 'DEFAULT FALSE', $out);}}return $out;}/*** Format indexes for create table** @param array $indexes The index to build* @param string $table The table name.* @return string*/public function buildIndex($indexes, $table = null) {$join = array();if (!is_array($indexes)) {return array();}foreach ($indexes as $name => $value) {if ($name === 'PRIMARY') {$out = 'PRIMARY KEY (' . $this->name($value['column']) . ')';} else {$out = 'CREATE ';if (!empty($value['unique'])) {$out .= 'UNIQUE ';}if (is_array($value['column'])) {$value['column'] = implode(', ', array_map(array(&$this, 'name'), $value['column']));} else {$value['column'] = $this->name($value['column']);}$out .= "INDEX {$name} ON {$table}({$value['column']});";}$join[] = $out;}return $join;}/*** Overrides DboSource::renderStatement to handle schema generation with Postgres-style indexes** @param string $type The query type.* @param array $data The array of data to render.* @return string*/public function renderStatement($type, $data) {switch (strtolower($type)) {case 'schema':extract($data);foreach ($indexes as $i => $index) {if (preg_match('/PRIMARY KEY/', $index)) {unset($indexes[$i]);$columns[] = $index;break;}}$join = array('columns' => ",\n\t", 'indexes' => "\n");foreach (array('columns', 'indexes') as $var) {if (is_array(${$var})) {${$var} = implode($join[$var], array_filter(${$var}));}}return "CREATE TABLE {$table} (\n\t{$columns}\n);\n{$indexes}";default:return parent::renderStatement($type, $data);}}/*** Gets the schema name** @return string The schema name*/public function getSchemaName() {return $this->config['schema'];}/*** Check if the server support nested transactions** @return bool*/public function nestedTransactionSupported() {return $this->useNestedTransactions && version_compare($this->getVersion(), '8.0', '>=');}}