2020-04-02 01:48:46 +02:00
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<?php
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namespace Driver\SQL;
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use \Api\Parameter\Parameter;
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2021-04-08 18:29:47 +02:00
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use Api\User\Create;
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2020-06-18 15:08:09 +02:00
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use Driver\SQL\Column\Column;
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2020-04-02 01:48:46 +02:00
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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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2020-06-24 16:09:04 +02:00
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use Driver\SQL\Condition\CondRegex;
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2020-06-18 15:08:09 +02:00
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use Driver\SQL\Expression\Add;
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2021-04-08 19:08:05 +02:00
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use Driver\SQL\Expression\CurrentTimeStamp;
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use Driver\SQL\Expression\DateAdd;
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use Driver\SQL\Expression\Expression;
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2021-04-08 18:29:47 +02:00
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use Driver\SQL\Query\CreateProcedure;
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use Driver\SQL\Query\CreateTrigger;
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use Driver\SQL\Query\Query;
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2020-04-03 17:39:58 +02:00
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use Driver\SQL\Strategy\Strategy;
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2020-06-18 15:08:09 +02:00
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use Driver\SQL\Strategy\UpdateStrategy;
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2021-04-08 18:29:47 +02:00
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use Driver\SQL\Type\CurrentColumn;
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use Driver\SQL\Type\CurrentTable;
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use Driver\SQL\Type\Trigger;
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2020-04-02 01:48:46 +02:00
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class PostgreSQL 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('pg_connect');
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}
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public function getDriverName() {
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return 'pgsql';
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}
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2020-04-03 18:09:01 +02:00
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// Connection Management
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2020-04-02 01:48:46 +02:00
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public function connect() {
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if(!is_null($this->connection)) {
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return true;
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}
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$config = array(
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"host" => $this->connectionData->getHost(),
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"port" => $this->connectionData->getPort(),
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"dbname" => $this->connectionData->getProperty('database', 'public'),
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"user" => $this->connectionData->getLogin(),
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"password" => $this->connectionData->getPassword()
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);
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$connectionString = array();
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foreach($config as $key => $val) {
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if (!empty($val)) {
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$connectionString[] = "$key=$val";
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}
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}
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2021-04-06 20:31:52 +02:00
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$this->connection = @pg_connect(implode(" ", $connectionString), PGSQL_CONNECT_FORCE_NEW);
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2020-04-02 01:48:46 +02:00
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if (!$this->connection) {
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$this->lastError = "Failed to connect to Database";
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$this->connection = NULL;
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return false;
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}
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pg_set_client_encoding($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;
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2020-06-27 01:37:20 +02:00
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@pg_close($this->connection);
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2020-04-02 01:48:46 +02:00
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}
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2021-04-08 18:29:47 +02:00
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public function getLastError(): string {
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2020-04-02 21:19:06 +02:00
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$lastError = parent::getLastError();
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if (empty($lastError)) {
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2020-06-25 21:53:33 +02:00
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$lastError = trim(pg_last_error($this->connection) . " " . pg_last_error($this->connection));
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2020-04-02 21:19:06 +02:00
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}
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return $lastError;
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}
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2020-04-02 01:48:46 +02:00
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protected function execute($query, $values = NULL, $returnValues = false) {
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$this->lastError = "";
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$stmt_name = uniqid();
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$pgParams = array();
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if (!is_null($values)) {
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foreach($values as $value) {
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$paramType = Parameter::parseType($value);
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switch($paramType) {
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case Parameter::TYPE_DATE:
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$value = $value->format("Y-m-d");
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break;
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case Parameter::TYPE_TIME:
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$value = $value->format("H:i:s");
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break;
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case Parameter::TYPE_DATE_TIME:
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$value = $value->format("Y-m-d H:i:s");
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break;
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2020-06-27 01:37:20 +02:00
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case Parameter::TYPE_ARRAY:
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$value = json_encode($value);
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break;
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2020-04-02 01:48:46 +02:00
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default:
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break;
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}
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$pgParams[] = $value;
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}
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}
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$stmt = @pg_prepare($this->connection, $stmt_name, $query);
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if ($stmt === FALSE) {
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return false;
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}
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$result = @pg_execute($this->connection, $stmt_name, $pgParams);
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if ($result === FALSE) {
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return false;
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}
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if ($returnValues) {
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$rows = pg_fetch_all($result);
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if ($rows === FALSE) {
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if (empty(trim($this->getLastError()))) {
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$rows = array();
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}
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}
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return $rows;
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} else {
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return true;
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}
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}
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2021-04-08 18:29:47 +02:00
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public function getOnDuplicateStrategy(?Strategy $strategy, &$params): ?string {
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2020-04-03 17:39:58 +02:00
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if (!is_null($strategy)) {
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2020-06-18 15:08:09 +02:00
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if ($strategy instanceof UpdateStrategy) {
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2021-04-08 18:29:47 +02:00
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$updateValues = array();
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foreach($strategy->getValues() as $key => $value) {
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$leftColumn = $this->columnName($key);
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if ($value instanceof Column) {
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$columnName = $this->columnName($value->getName());
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$updateValues[] = "$leftColumn=EXCLUDED.$columnName";
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} else if ($value instanceof Add) {
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2021-04-08 19:08:05 +02:00
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$columnName = $this->columnName($value->getLHS());
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2021-04-08 18:29:47 +02:00
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$operator = $value->getOperator();
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$value = $value->getValue();
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$updateValues[] = "$leftColumn=$columnName$operator" . $this->addValue($value, $params);
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} else {
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$updateValues[] = "$leftColumn=" . $this->addValue($value, $parameters);
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}
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2020-06-18 15:08:09 +02:00
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}
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2021-04-08 18:29:47 +02:00
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$conflictingColumns = $this->columnName($strategy->getConflictingColumns());
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$updateValues = implode(",", $updateValues);
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return " ON CONFLICT ($conflictingColumns) DO UPDATE SET $updateValues";
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} else {
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$strategyClass = get_class($strategy);
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$this->lastError = "ON DUPLICATE Strategy $strategyClass is not supported yet.";
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return null;
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}
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2020-04-03 17:39:58 +02:00
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} else {
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return "";
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2020-04-02 01:48:46 +02:00
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}
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2020-04-03 17:39:58 +02:00
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}
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2020-04-02 01:48:46 +02:00
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2021-04-08 18:29:47 +02:00
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public function getReturning(?string $columns): string {
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2020-04-03 17:39:58 +02:00
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return $columns ? (" RETURNING " . $this->columnName($columns)) : "";
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}
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2020-04-02 01:48:46 +02:00
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2020-04-03 17:39:58 +02:00
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protected function fetchReturning($res, string $returningCol) {
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$this->lastInsertId = $res[0][$returningCol];
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2020-04-02 01:48:46 +02:00
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}
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// UGLY but.. what should i do?
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2021-04-08 18:29:47 +02:00
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private function createEnum(EnumColumn $enumColumn, string $typeName): string {
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2020-04-02 01:48:46 +02:00
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$values = array();
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foreach($enumColumn->getValues() as $value) {
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$values[] = $this->getValueDefinition($value);
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}
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$values = implode(",", $values);
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$query =
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"DO $$ BEGIN
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CREATE TYPE \"$typeName\" AS ENUM ($values);
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EXCEPTION
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WHEN duplicate_object THEN null;
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END $$;";
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2021-04-08 18:29:47 +02:00
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return $this->execute($query);
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2020-04-02 01:48:46 +02:00
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}
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2021-04-08 18:29:47 +02:00
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public function getColumnType(Column $column): ?string {
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2020-04-02 01:48:46 +02:00
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if ($column instanceof StringColumn) {
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$maxSize = $column->getMaxSize();
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if ($maxSize) {
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2021-04-08 18:29:47 +02:00
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return "VARCHAR($maxSize)";
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2020-04-02 01:48:46 +02:00
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} else {
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2021-04-08 18:29:47 +02:00
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return "TEXT";
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2020-04-02 01:48:46 +02:00
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}
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} else if($column instanceof SerialColumn) {
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2021-04-08 18:29:47 +02:00
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return "SERIAL";
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2020-04-02 01:48:46 +02:00
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} else if($column instanceof IntColumn) {
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2021-04-08 18:29:47 +02:00
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return "INTEGER";
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2020-04-02 01:48:46 +02:00
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} else if($column instanceof DateTimeColumn) {
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2021-04-08 18:29:47 +02:00
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return "TIMESTAMP";
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2020-04-02 01:48:46 +02:00
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} else if($column instanceof EnumColumn) {
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2021-04-08 18:29:47 +02:00
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$typeName = $column->getName();
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if(!endsWith($typeName, "_type")) {
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$typeName = "${typeName}_type";
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}
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return $typeName;
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2020-04-02 01:48:46 +02:00
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} else if($column instanceof BoolColumn) {
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2021-04-08 18:29:47 +02:00
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return "BOOLEAN";
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2020-04-02 01:48:46 +02:00
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} else if($column instanceof JsonColumn) {
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2021-04-08 18:29:47 +02:00
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return "JSON";
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2020-04-02 01:48:46 +02:00
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} else {
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$this->lastError = "Unsupported Column Type: " . get_class($column);
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return NULL;
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}
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2021-04-08 18:29:47 +02:00
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}
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public function getColumnDefinition($column): ?string {
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$columnName = $this->columnName($column->getName());
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$type = $this->getColumnType($column);
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if (!$type) {
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return null;
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} else if ($column instanceof EnumColumn) {
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if (!$this->createEnum($column, $type)) {
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return null;
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}
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}
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2020-04-02 01:48:46 +02:00
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$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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2020-04-02 16:16:58 +02:00
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return "$columnName $type$notNull$defaultValue";
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2020-04-02 01:48:46 +02:00
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}
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protected function getValueDefinition($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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2021-04-08 19:08:05 +02:00
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} else if ($value instanceof Keyword) {
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2020-04-02 01:48:46 +02:00
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return $value->getValue();
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2021-04-08 19:08:05 +02:00
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} else if ($value instanceof CurrentTimeStamp) {
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return "CURRENT_TIMESTAMP";
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2020-04-02 01:48:46 +02:00
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} else {
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$str = str_replace("'", "''", $value);
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return "'$str'";
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}
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}
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2021-04-08 18:29:47 +02:00
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public function addValue($val, &$params = NULL) {
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2020-04-02 01:48:46 +02:00
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if ($val instanceof Keyword) {
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return $val->getValue();
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2021-04-08 18:29:47 +02:00
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} else if ($val instanceof CurrentTable) {
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return "TG_TABLE_NAME";
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} else if ($val instanceof CurrentColumn) {
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return "NEW." . $this->columnName($val->getName());
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} else if ($val instanceof Column) {
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return $this->columnName($val->getName());
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2021-04-08 19:08:05 +02:00
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} else if ($val instanceof Expression) {
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return $this->createExpression($val, $params);
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2020-04-02 01:48:46 +02:00
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} else {
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2020-04-02 21:19:06 +02:00
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$params[] = is_bool($val) ? ($val ? "TRUE" : "FALSE") : $val;
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2020-04-02 01:48:46 +02:00
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return '$' . count($params);
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}
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}
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2021-04-08 18:29:47 +02:00
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public function tableName($table): string {
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2020-04-02 16:16:58 +02:00
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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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2020-04-02 15:08:14 +02:00
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}
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2021-04-08 18:29:47 +02:00
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public function columnName($col): string {
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2020-04-02 15:08:14 +02:00
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if ($col instanceof KeyWord) {
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return $col->getValue();
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2020-04-02 16:16:58 +02:00
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} elseif(is_array($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(",", $columns);
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2020-04-02 15:08:14 +02:00
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} else {
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2020-04-02 16:16:58 +02:00
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if (($index = strrpos($col, ".")) !== FALSE) {
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2020-04-02 15:08:14 +02:00
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$tableName = $this->tableName(substr($col, 0, $index));
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$columnName = $this->columnName(substr($col, $index + 1));
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return "$tableName.$columnName";
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2020-04-02 16:16:58 +02:00
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} else if(($index = stripos($col, " as ")) !== FALSE) {
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$columnName = $this->columnName(trim(substr($col, 0, $index)));
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$alias = $this->columnName(trim(substr($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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2020-04-02 15:08:14 +02:00
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}
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}
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}
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2020-06-19 13:13:13 +02:00
|
|
|
public function getStatus() {
|
|
|
|
$version = pg_version($this->connection)["client"] ?? "??";
|
|
|
|
$status = pg_connection_status($this->connection);
|
|
|
|
static $statusTexts = array(
|
|
|
|
PGSQL_CONNECTION_OK => "PGSQL_CONNECTION_OK",
|
|
|
|
PGSQL_CONNECTION_BAD => "PGSQL_CONNECTION_BAD",
|
|
|
|
);
|
|
|
|
|
|
|
|
return ($statusTexts[$status] ?? "Unknown") . " (v$version)";
|
|
|
|
}
|
2020-06-20 15:49:53 +02:00
|
|
|
|
|
|
|
protected function buildCondition($condition, &$params) {
|
2020-06-24 16:09:04 +02:00
|
|
|
if($condition instanceof CondRegex) {
|
2020-06-20 15:49:53 +02:00
|
|
|
$left = $condition->getLeftExp();
|
|
|
|
$right = $condition->getRightExp();
|
|
|
|
$left = ($left instanceof Column) ? $this->columnName($left->getName()) : $this->addValue($left, $params);
|
|
|
|
$right = ($right instanceof Column) ? $this->columnName($right->getName()) : $this->addValue($right, $params);
|
|
|
|
return $left . " ~ " . $right;
|
|
|
|
} else {
|
|
|
|
return parent::buildCondition($condition, $params);
|
|
|
|
}
|
|
|
|
}
|
2021-04-08 18:29:47 +02:00
|
|
|
|
|
|
|
private function createTriggerProcedure(string $name, array $statements) {
|
|
|
|
$params = [];
|
|
|
|
$query = "CREATE OR REPLACE FUNCTION $name() RETURNS TRIGGER AS \$table\$ BEGIN ";
|
|
|
|
foreach($statements as $stmt) {
|
|
|
|
if ($stmt instanceof Keyword) {
|
|
|
|
$query .= $stmt->getValue() . ";";
|
|
|
|
} else {
|
|
|
|
$query .= $stmt->build($this, $params) . ";";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
$query .= "END;";
|
|
|
|
$query .= "\$table\$ LANGUAGE plpgsql;";
|
|
|
|
|
|
|
|
var_dump($query);
|
|
|
|
var_dump($params);
|
|
|
|
|
|
|
|
return $this->execute($query, $params);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function createTriggerBody(CreateTrigger $trigger): ?string {
|
|
|
|
$procName = $this->tableName($trigger->getProcedure()->getName());
|
|
|
|
return "EXECUTE PROCEDURE $procName()";
|
|
|
|
}
|
|
|
|
|
|
|
|
public function getProcedureHead(CreateProcedure $procedure): ?string {
|
|
|
|
$name = $this->tableName($procedure->getName());
|
|
|
|
$returns = $procedure->getReturns() ?? "";
|
|
|
|
$paramDefs = [];
|
|
|
|
|
|
|
|
if (!($procedure->getReturns() instanceof Trigger)) {
|
|
|
|
foreach ($procedure->getParameters() as $parameter) {
|
|
|
|
$paramDefs[] = $parameter->getName() . " " . $this->getColumnType($parameter);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
$paramDefs = implode(",", $paramDefs);
|
|
|
|
if ($returns) {
|
|
|
|
if ($returns instanceof Column) {
|
|
|
|
$returns = " RETURNS " . $this->getColumnType($returns);
|
|
|
|
} else if ($returns instanceof Keyword) {
|
|
|
|
$returns = " RETURNS " . $returns->getValue();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return "CREATE OR REPLACE FUNCTION $name($paramDefs)$returns AS $$";
|
|
|
|
}
|
|
|
|
|
|
|
|
public function getProcedureTail(): string {
|
|
|
|
return "$$ LANGUAGE plpgsql;";
|
|
|
|
}
|
|
|
|
|
|
|
|
public function getProcedureBody(CreateProcedure $procedure): string {
|
|
|
|
$statements = parent::getProcedureBody($procedure);
|
|
|
|
if ($procedure->getReturns() instanceof Trigger) {
|
|
|
|
$statements .= "RETURN NEW;";
|
|
|
|
}
|
|
|
|
return $statements;
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function buildUnsafe(Query $statement): string {
|
|
|
|
$params = [];
|
|
|
|
$query = $statement->build($params);
|
|
|
|
|
|
|
|
foreach ($params as $index => $value) {
|
|
|
|
$value = $this->getUnsafeValue($value);
|
|
|
|
$query = preg_replace("\$$index", $value, $query, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
return $query;
|
|
|
|
}
|
2021-04-08 19:08:05 +02:00
|
|
|
|
|
|
|
protected function createExpression(Expression $exp, array &$params) {
|
|
|
|
if ($exp instanceof DateAdd) {
|
|
|
|
$lhs = $this->addValue($exp->getLHS(), $params);
|
|
|
|
$rhs = $this->addValue($exp->getRHS(), $params);
|
|
|
|
$unit = $exp->getUnit();
|
|
|
|
|
|
|
|
if ($exp->getRHS() instanceof Column) {
|
|
|
|
$rhs = "$rhs * INTERVAL '1 $unit'";
|
|
|
|
} else {
|
|
|
|
$rhs = "$rhs $unit";
|
|
|
|
}
|
|
|
|
|
|
|
|
return "$lhs + $rhs";
|
|
|
|
} else if ($exp instanceof CurrentTimeStamp) {
|
|
|
|
return "CURRENT_TIMESTAMP";
|
|
|
|
} else {
|
|
|
|
return parent::createExpression($exp, $params);
|
|
|
|
}
|
|
|
|
}
|
2020-04-03 17:39:58 +02:00
|
|
|
}
|