446 lines
13 KiB
PHP
446 lines
13 KiB
PHP
<?php
|
|
|
|
namespace Driver\SQL;
|
|
|
|
use \Api\Parameter\Parameter;
|
|
|
|
use Api\User\Create;
|
|
use Driver\SQL\Column\Column;
|
|
use \Driver\SQL\Column\IntColumn;
|
|
use \Driver\SQL\Column\SerialColumn;
|
|
use \Driver\SQL\Column\StringColumn;
|
|
use \Driver\SQL\Column\EnumColumn;
|
|
use \Driver\SQL\Column\DateTimeColumn;
|
|
use Driver\SQL\Column\BoolColumn;
|
|
use Driver\SQL\Column\JsonColumn;
|
|
|
|
use Driver\SQL\Condition\CondRegex;
|
|
use Driver\SQL\Expression\Add;
|
|
use Driver\SQL\Expression\CurrentTimeStamp;
|
|
use Driver\SQL\Expression\DateAdd;
|
|
use Driver\SQL\Expression\DateSub;
|
|
use Driver\SQL\Expression\Expression;
|
|
use Driver\SQL\Query\CreateProcedure;
|
|
use Driver\SQL\Query\CreateTrigger;
|
|
use Driver\SQL\Query\Insert;
|
|
use Driver\SQL\Query\Query;
|
|
use Driver\SQL\Strategy\Strategy;
|
|
use Driver\SQL\Strategy\UpdateStrategy;
|
|
use Driver\SQL\Type\CurrentColumn;
|
|
use Driver\SQL\Type\CurrentTable;
|
|
use Driver\SQL\Type\Trigger;
|
|
|
|
class PostgreSQL extends SQL {
|
|
|
|
public function __construct($connectionData) {
|
|
parent::__construct($connectionData);
|
|
}
|
|
|
|
public function checkRequirements() {
|
|
return function_exists('pg_connect');
|
|
}
|
|
|
|
public function getDriverName() {
|
|
return 'pgsql';
|
|
}
|
|
|
|
// Connection Management
|
|
public function connect() {
|
|
if(!is_null($this->connection)) {
|
|
return true;
|
|
}
|
|
|
|
$config = array(
|
|
"host" => $this->connectionData->getHost(),
|
|
"port" => $this->connectionData->getPort(),
|
|
"dbname" => $this->connectionData->getProperty('database', 'public'),
|
|
"user" => $this->connectionData->getLogin(),
|
|
"password" => $this->connectionData->getPassword()
|
|
);
|
|
|
|
$connectionString = array();
|
|
foreach($config as $key => $val) {
|
|
if (!empty($val)) {
|
|
$connectionString[] = "$key=$val";
|
|
}
|
|
}
|
|
|
|
$this->connection = @pg_connect(implode(" ", $connectionString), PGSQL_CONNECT_FORCE_NEW);
|
|
if (!$this->connection) {
|
|
$this->lastError = "Failed to connect to Database";
|
|
$this->connection = NULL;
|
|
return false;
|
|
}
|
|
|
|
pg_set_client_encoding($this->connection, $this->connectionData->getProperty('encoding', 'UTF-8'));
|
|
return true;
|
|
}
|
|
|
|
public function disconnect() {
|
|
if(is_null($this->connection))
|
|
return;
|
|
|
|
@pg_close($this->connection);
|
|
}
|
|
|
|
public function getLastError(): string {
|
|
$lastError = parent::getLastError();
|
|
if (empty($lastError)) {
|
|
$lastError = trim(pg_last_error($this->connection) . " " . pg_last_error($this->connection));
|
|
}
|
|
|
|
return $lastError;
|
|
}
|
|
|
|
protected function execute($query, $values = NULL, $returnValues = false) {
|
|
|
|
$this->lastError = "";
|
|
$stmt_name = uniqid();
|
|
$pgParams = array();
|
|
|
|
if (!is_null($values)) {
|
|
foreach($values as $value) {
|
|
$paramType = Parameter::parseType($value);
|
|
switch($paramType) {
|
|
case Parameter::TYPE_DATE:
|
|
$value = $value->format("Y-m-d");
|
|
break;
|
|
case Parameter::TYPE_TIME:
|
|
$value = $value->format("H:i:s");
|
|
break;
|
|
case Parameter::TYPE_DATE_TIME:
|
|
$value = $value->format("Y-m-d H:i:s");
|
|
break;
|
|
case Parameter::TYPE_ARRAY:
|
|
$value = json_encode($value);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
$pgParams[] = $value;
|
|
}
|
|
}
|
|
|
|
$stmt = @pg_prepare($this->connection, $stmt_name, $query);
|
|
if ($stmt === FALSE) {
|
|
return false;
|
|
}
|
|
|
|
$result = @pg_execute($this->connection, $stmt_name, $pgParams);
|
|
if ($result === FALSE) {
|
|
return false;
|
|
}
|
|
|
|
if ($returnValues) {
|
|
$rows = pg_fetch_all($result);
|
|
if ($rows === FALSE) {
|
|
if (empty(trim($this->getLastError()))) {
|
|
$rows = array();
|
|
}
|
|
}
|
|
|
|
return $rows;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
public function getOnDuplicateStrategy(?Strategy $strategy, &$params): ?string {
|
|
if (!is_null($strategy)) {
|
|
if ($strategy instanceof UpdateStrategy) {
|
|
$updateValues = array();
|
|
foreach($strategy->getValues() as $key => $value) {
|
|
$leftColumn = $this->columnName($key);
|
|
if ($value instanceof Column) {
|
|
$columnName = $this->columnName($value->getName());
|
|
$updateValues[] = "$leftColumn=EXCLUDED.$columnName";
|
|
} else if ($value instanceof Add) {
|
|
$columnName = $this->columnName($value->getColumn());
|
|
$operator = $value->getOperator();
|
|
$value = $value->getValue();
|
|
$updateValues[] = "$leftColumn=$columnName$operator" . $this->addValue($value, $params);
|
|
} else {
|
|
$updateValues[] = "$leftColumn=" . $this->addValue($value, $parameters);
|
|
}
|
|
}
|
|
|
|
$conflictingColumns = $this->columnName($strategy->getConflictingColumns());
|
|
$updateValues = implode(",", $updateValues);
|
|
return " ON CONFLICT ($conflictingColumns) DO UPDATE SET $updateValues";
|
|
} else {
|
|
$strategyClass = get_class($strategy);
|
|
$this->lastError = "ON DUPLICATE Strategy $strategyClass is not supported yet.";
|
|
return null;
|
|
}
|
|
} else {
|
|
return "";
|
|
}
|
|
}
|
|
|
|
public function getReturning(?string $columns): string {
|
|
return $columns ? (" RETURNING " . $this->columnName($columns)) : "";
|
|
}
|
|
|
|
public function executeQuery(Query $query, bool $fetchResult = false) {
|
|
return parent::executeQuery($query, $fetchResult || ($query instanceof Insert && !empty($query->getReturning())));
|
|
}
|
|
|
|
protected function fetchReturning($res, string $returningCol) {
|
|
$this->lastInsertId = $res[0][$returningCol];
|
|
}
|
|
|
|
// UGLY but.. what should i do?
|
|
private function createEnum(EnumColumn $enumColumn, string $typeName): string {
|
|
$values = array();
|
|
foreach($enumColumn->getValues() as $value) {
|
|
$values[] = $this->getValueDefinition($value);
|
|
}
|
|
|
|
$values = implode(",", $values);
|
|
$query =
|
|
"DO $$ BEGIN
|
|
CREATE TYPE \"$typeName\" AS ENUM ($values);
|
|
EXCEPTION
|
|
WHEN duplicate_object THEN null;
|
|
END $$;";
|
|
|
|
return $this->execute($query);
|
|
}
|
|
|
|
public function getColumnType(Column $column): ?string {
|
|
if ($column instanceof StringColumn) {
|
|
$maxSize = $column->getMaxSize();
|
|
if ($maxSize) {
|
|
return "VARCHAR($maxSize)";
|
|
} else {
|
|
return "TEXT";
|
|
}
|
|
} else if($column instanceof SerialColumn) {
|
|
return "SERIAL";
|
|
} else if($column instanceof IntColumn) {
|
|
return "INTEGER";
|
|
} else if($column instanceof DateTimeColumn) {
|
|
return "TIMESTAMP";
|
|
} else if($column instanceof EnumColumn) {
|
|
$typeName = $column->getName();
|
|
if(!endsWith($typeName, "_type")) {
|
|
$typeName = "${typeName}_type";
|
|
}
|
|
return $typeName;
|
|
} else if($column instanceof BoolColumn) {
|
|
return "BOOLEAN";
|
|
} else if($column instanceof JsonColumn) {
|
|
return "JSON";
|
|
} else {
|
|
$this->lastError = "Unsupported Column Type: " . get_class($column);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
public function getColumnDefinition($column): ?string {
|
|
$columnName = $this->columnName($column->getName());
|
|
|
|
$type = $this->getColumnType($column);
|
|
if (!$type) {
|
|
return null;
|
|
} else if ($column instanceof EnumColumn) {
|
|
if (!$this->createEnum($column, $type)) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
$notNull = $column->notNull() ? " NOT NULL" : "";
|
|
$defaultValue = "";
|
|
if (!is_null($column->getDefaultValue()) || !$column->notNull()) {
|
|
$defaultValue = " DEFAULT " . $this->getValueDefinition($column->getDefaultValue());
|
|
}
|
|
|
|
return "$columnName $type$notNull$defaultValue";
|
|
}
|
|
|
|
protected function getValueDefinition($value) {
|
|
if (is_numeric($value)) {
|
|
return $value;
|
|
} else if(is_bool($value)) {
|
|
return $value ? "TRUE" : "FALSE";
|
|
} else if(is_null($value)) {
|
|
return "NULL";
|
|
} else if ($value instanceof Keyword) {
|
|
return $value->getValue();
|
|
} else if ($value instanceof CurrentTimeStamp) {
|
|
return "CURRENT_TIMESTAMP";
|
|
} else {
|
|
$str = str_replace("'", "''", $value);
|
|
return "'$str'";
|
|
}
|
|
}
|
|
|
|
public function addValue($val, &$params = NULL, bool $unsafe = false) {
|
|
if ($val instanceof Keyword) {
|
|
return $val->getValue();
|
|
} else if ($val instanceof CurrentTable) {
|
|
return "TG_TABLE_NAME";
|
|
} else if ($val instanceof CurrentColumn) {
|
|
return "NEW." . $this->columnName($val->getName());
|
|
} else if ($val instanceof Column) {
|
|
return $this->columnName($val->getName());
|
|
} else if ($val instanceof Expression) {
|
|
return $this->createExpression($val, $params);
|
|
} else {
|
|
if ($unsafe) {
|
|
return $this->getUnsafeValue($val);
|
|
} else {
|
|
$params[] = is_bool($val) ? ($val ? "TRUE" : "FALSE") : $val;
|
|
return '$' . count($params);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function tableName($table): string {
|
|
if (is_array($table)) {
|
|
$tables = array();
|
|
foreach($table as $t) $tables[] = $this->tableName($t);
|
|
return implode(",", $tables);
|
|
} else {
|
|
return "\"$table\"";
|
|
}
|
|
}
|
|
|
|
public function columnName($col): string {
|
|
if ($col instanceof KeyWord) {
|
|
return $col->getValue();
|
|
} elseif(is_array($col)) {
|
|
$columns = array();
|
|
foreach($col as $c) $columns[] = $this->columnName($c);
|
|
return implode(",", $columns);
|
|
} else {
|
|
if (($index = strrpos($col, ".")) !== FALSE) {
|
|
$tableName = $this->tableName(substr($col, 0, $index));
|
|
$columnName = $this->columnName(substr($col, $index + 1));
|
|
return "$tableName.$columnName";
|
|
} else if(($index = stripos($col, " as ")) !== FALSE) {
|
|
$columnName = $this->columnName(trim(substr($col, 0, $index)));
|
|
$alias = $this->columnName(trim(substr($col, $index + 4)));
|
|
return "$columnName as $alias";
|
|
} else {
|
|
return "\"$col\"";
|
|
}
|
|
}
|
|
}
|
|
|
|
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)";
|
|
}
|
|
|
|
protected function buildCondition($condition, &$params) {
|
|
if($condition instanceof CondRegex) {
|
|
$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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
protected function createExpression(Expression $exp, array &$params): ?string {
|
|
if ($exp instanceof DateAdd || $exp instanceof DateSub) {
|
|
$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";
|
|
}
|
|
|
|
$operator = ($exp instanceof DateAdd ? "+" : "-");
|
|
return "$lhs $operator $rhs";
|
|
} else if ($exp instanceof CurrentTimeStamp) {
|
|
return "CURRENT_TIMESTAMP";
|
|
} else {
|
|
return parent::createExpression($exp, $params);
|
|
}
|
|
}
|
|
}
|