434 lines
12 KiB
PHP
434 lines
12 KiB
PHP
<?php
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namespace Driver\SQL;
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use \Api\Parameter\Parameter;
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use \Driver\SQL\Column\Column;
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use \Driver\SQL\Column\IntColumn;
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use \Driver\SQL\Column\SerialColumn;
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use \Driver\SQL\Column\StringColumn;
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use \Driver\SQL\Column\EnumColumn;
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use \Driver\SQL\Column\DateTimeColumn;
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use Driver\SQL\Column\BoolColumn;
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use Driver\SQL\Column\JsonColumn;
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use \Driver\SQL\Strategy\CascadeStrategy;
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use \Driver\SQL\Strategy\SetDefaultStrategy;
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use \Driver\SQL\Strategy\SetNullStrategy;
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use \Driver\SQL\Strategy\UpdateStrategy;
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use \Driver\SQL\Constraint\Unique;
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use \Driver\SQL\Constraint\PrimaryKey;
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use \Driver\SQL\Constraint\ForeignKey;
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class MySQL extends SQL {
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public function __construct($connectionData) {
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parent::__construct($connectionData);
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}
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public function checkRequirements() {
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return function_exists('mysqli_connect');
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}
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public function getDriverName() {
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return 'mysqli';
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}
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// Connection Managment
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public function connect() {
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if(!is_null($this->connection)) {
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return true;
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}
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@$this->connection = mysqli_connect(
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$this->connectionData->getHost(),
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$this->connectionData->getLogin(),
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$this->connectionData->getPassword(),
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$this->connectionData->getProperty('database'),
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$this->connectionData->getPort()
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);
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if (mysqli_connect_errno($this->connection)) {
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$this->lastError = "Failed to connect to MySQL: " . mysqli_connect_error();
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$this->connection = NULL;
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return false;
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}
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mysqli_set_charset($this->connection, $this->connectionData->getProperty('encoding', 'UTF-8'));
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return true;
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}
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public function disconnect() {
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if(is_null($this->connection)) {
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return true;
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}
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mysqli_close($this->connection);
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}
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public function getLastError() {
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$lastError = parent::getLastError();
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if (empty($lastError)) {
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$lastError = mysqli_error($this->connection);
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}
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return $lastError;
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}
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private function getPreparedParams($values) {
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$sqlParams = array('');
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foreach($values as $value) {
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$paramType = Parameter::parseType($value);
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switch($paramType) {
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case Parameter::TYPE_BOOLEAN:
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$value = $value ? 1 : 0;
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case Parameter::TYPE_INT:
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$sqlParams[0] .= 'i';
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break;
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case Parameter::TYPE_FLOAT:
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$sqlParams[0] .= 'd';
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break;
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case Parameter::TYPE_DATE:
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$value = $value->format('Y-m-d');
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$sqlParams[0] .= 's';
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break;
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case Parameter::TYPE_TIME:
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$value = $value->format('H:i:s');
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$sqlParams[0] .= 's';
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break;
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case Parameter::TYPE_DATE_TIME:
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$value = $value->format('Y-m-d H:i:s');
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$sqlParams[0] .= 's';
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break;
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case Parameter::TYPE_EMAIL:
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default:
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$sqlParams[0] .= 's';
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}
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$sqlParams[] = $value;
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}
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return $sqlParams;
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}
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protected function execute($query, $values = NULL, $returnValues = false) {
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$resultRows = array();
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$this->lastError = "";
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if (is_null($values) || empty($values)) {
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$res = mysqli_query($this->connection, $query);
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$success = $res !== FALSE;
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if ($success && $returnValues) {
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while($row = $res->fetch_assoc()) {
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$resultRows[] = $row;
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}
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$res->close();
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}
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} else if($stmt = $this->connection->prepare($query)) {
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$success = false;
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$sqlParams = $this->getPreparedParams($values);
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$tmp = array();
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foreach($sqlParams as $key => $value) $tmp[$key] = &$sqlParams[$key];
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if(call_user_func_array(array($stmt, "bind_param"), $tmp)) {
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if($stmt->execute()) {
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if ($returnValues) {
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$res = $stmt->get_result();
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if($res) {
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while($row = $res->fetch_assoc()) {
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$resultRows[] = $row;
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}
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$res->close();
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$success = true;
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} else {
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$this->lastError = "PreparedStatement::get_result failed: $stmt->error ($stmt->errno)";
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}
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} else {
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$success = true;
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}
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} else {
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$this->lastError = "PreparedStatement::execute failed: $stmt->error ($stmt->errno)";
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}
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} else {
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$this->lastError = "PreparedStatement::prepare failed: $stmt->error ($stmt->errno)";
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}
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$stmt->close();
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} else {
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$success = false;
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}
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return ($success && $returnValues) ? $resultRows : $success;
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}
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public function executeInsert($insert) {
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$tableName = $this->tableName($insert->getTableName());
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$columns = $insert->getColumns();
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$rows = $insert->getRows();
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$onDuplicateKey = $insert->onDuplicateKey() ?? "";
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if (empty($rows)) {
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$this->lastError = "No rows to insert given.";
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return false;
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}
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if (is_null($columns) || empty($columns)) {
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$columns = "";
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$numColumns = count($rows[0]);
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} else {
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$numColumns = count($columns);
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$columns = " (" . $this->columnName($columns) . ")";
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}
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$numRows = count($rows);
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$parameters = array();
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$values = implode(",", array_fill(0, $numRows, "(" . implode(",", array_fill(0, $numColumns, "?")) . ")"));
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foreach($rows as $row) {
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$parameters = array_merge($parameters, $row);
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}
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if ($onDuplicateKey) {
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if ($onDuplicateKey instanceof UpdateStrategy) {
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$updateValues = array();
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foreach($onDuplicateKey->getValues() as $key => $value) {
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if ($value instanceof Column) {
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$columnName = $value->getName();
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$updateValues[] = "`$key`=`$columnName`";
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} else {
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$updateValues[] = "`$key`=" . $this->addValue($value, $parameters);
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}
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}
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$onDuplicateKey = " ON DUPLICATE KEY UPDATE " . implode(",", $updateValues);
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} else {
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$strategy = get_class($onDuplicateKey);
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$this->lastError = "ON DUPLICATE Strategy $strategy is not supported yet.";
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return false;
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}
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}
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$query = "INSERT INTO $tableName$columns VALUES$values$onDuplicateKey";
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$success = $this->execute($query, $parameters);
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if($success) {
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$this->lastInsertId = mysqli_insert_id($this->connection);
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}
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return $success;
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}
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public function executeSelect($select) {
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$columns = $this->columnName($select->getColumns());
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$tables = $select->getTables();
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$params = array();
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if (is_null($tables) || empty($tables)) {
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return "SELECT $columns";
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} else {
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$tables = $this->tableName($tables);
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}
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$conditions = $select->getConditions();
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if (!empty($conditions)) {
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$condition = " WHERE " . $this->buildCondition($conditions, $params);
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} else {
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$condition = "";
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}
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$joinStr = "";
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$joins = $select->getJoins();
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if (!empty($joins)) {
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$joinStr = "";
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foreach($joins as $join) {
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$type = $join->getType();
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$joinTable = $this->tableName($join->getTable());
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$columnA = $this->columnName($join->getColumnA());
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$columnB = $this->columnName($join->getColumnB());
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$joinStr .= " $type JOIN $joinTable ON $columnA=$columnB";
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}
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}
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$orderBy = "";
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$limit = "";
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$offset = "";
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$query = "SELECT $columns FROM $tables$joinStr$condition$orderBy$limit$offset";
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return $this->execute($query, $params, true);
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}
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public function executeDelete($delete) {
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$table = $delete->getTable();
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$conditions = $delete->getConditions();
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if (!empty($conditions)) {
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$condition = " WHERE " . $this->buildCondition($conditions, $params);
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} else {
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$condition = "";
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}
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$query = "DELETE FROM $table$condition";
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return $this->execute($query);
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}
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public function executeTruncate($truncate) {
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return $this->execute("TRUNCATE " . $truncate->getTable());
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}
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public function executeUpdate($update) {
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$params = array();
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$table = $update->getTable();
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$valueStr = array();
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foreach($update->getValues() as $key => $val) {
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$valueStr[] = "$key=" . $this->addValue($val, $params);
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}
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$valueStr = implode(",", $valueStr);
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$conditions = $update->getConditions();
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if (!empty($conditions)) {
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$condition = " WHERE " . $this->buildCondition($conditions, $params);
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} else {
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$condition = "";
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}
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$query = "UPDATE $table SET $valueStr$condition";
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return $this->execute($query, $params);
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}
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public function getColumnDefinition($column) {
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$columnName = $column->getName();
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if ($column instanceof StringColumn) {
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$maxSize = $column->getMaxSize();
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if ($maxSize) {
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$type = "VARCHAR($maxSize)";
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} else {
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$type = "TEXT";
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}
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} else if($column instanceof SerialColumn) {
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$type = "INTEGER AUTO_INCREMENT";
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} else if($column instanceof IntColumn) {
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$type = "INTEGER";
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} else if($column instanceof DateTimeColumn) {
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$type = "DATETIME";
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} else if($column instanceof EnumColumn) {
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$values = array();
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foreach($column->getValues() as $value) {
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$values[] = $this->getValueDefinition($value);
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}
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$values = implode(",", $values);
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$type = "ENUM($values)";
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} else if($column instanceof BoolColumn) {
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$type = "BOOLEAN";
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} else if($column instanceof JsonColumn) {
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$type = "JSON";
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} else {
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$this->lastError = "Unsupported Column Type: " . get_class($column);
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return NULL;
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}
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$notNull = $column->notNull() ? " NOT NULL" : "";
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$defaultValue = "";
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if (!is_null($column->getDefaultValue()) || !$column->notNull()) {
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$defaultValue = " DEFAULT " . $this->getValueDefinition($column->getDefaultValue());
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}
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return "`$columnName` $type$notNull$defaultValue";
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}
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public function getConstraintDefinition($constraint) {
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$columnName = $constraint->getColumnName();
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if ($constraint instanceof PrimaryKey) {
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if (is_array($columnName)) $columnName = implode('`,`', $columnName);
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return "PRIMARY KEY (`$columnName`)";
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} else if ($constraint instanceof Unique) {
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if (is_array($columnName)) $columnName = implode('`,`', $columnName);
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return "UNIQUE (`$columnName`)";
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} else if ($constraint instanceof ForeignKey) {
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$refTable = $constraint->getReferencedTable();
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$refColumn = $constraint->getReferencedColumn();
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$strategy = $constraint->onDelete();
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$code = "FOREIGN KEY (`$columnName`) REFERENCES `$refTable` (`$refColumn`)";
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if ($strategy instanceof SetDefaultStrategy) {
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$code .= " ON DELETE SET DEFAULT";
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} else if($strategy instanceof SetNullStrategy) {
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$code .= " ON DELETE SET NULL";
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} else if($strategy instanceof CascadeStrategy) {
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$code .= " ON DELETE CASCADE";
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}
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return $code;
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}
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}
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// TODO: check this please..
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public function getValueDefinition($value) {
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if (is_numeric($value)) {
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return $value;
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} else if(is_bool($value)) {
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return $value ? "TRUE" : "FALSE";
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} else if(is_null($value)) {
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return "NULL";
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} else if($value instanceof Keyword) {
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return $value->getValue();
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} else {
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$str = addslashes($value);
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return "'$str'";
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}
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}
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protected function addValue($val, &$params) {
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if ($val instanceof Keyword) {
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return $val->getValue();
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} else {
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$params[] = $val;
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return "?";
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}
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}
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protected function tableName($table) {
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if (is_array($table)) {
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$tables = array();
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foreach($table as $t) $tables[] = $this->tableName($t);
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return implode(",", $tables);
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} else {
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return "`$table`";
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}
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}
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protected function columnName($col) {
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if ($col instanceof Keyword) {
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return $col->getValue();
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} elseif(is_array($col)) {
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$columns = array();
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foreach($col as $c) $columns[] = $this->columnName($c);
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return implode(",", $columns);
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} else {
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if (($index = strrpos($col, ".")) !== FALSE) {
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$tableName = $this->tableName(substr($col, 0, $index));
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$columnName = $this->columnName(substr($col, $index + 1));
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return "$tableName.$columnName";
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} else if(($index = stripos($col, " as ")) !== FALSE) {
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$columnName = $this->columnName(trim(substr($col, 0, $index)));
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$alias = trim(substr($col, $index + 4));
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return "$columnName as $alias";
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} else {
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return "`$col`";
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}
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}
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}
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public function currentTimestamp() {
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return new Keyword("NOW()");
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}
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};
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