49 lines
1.1 KiB
PHP
49 lines
1.1 KiB
PHP
<?php
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namespace nulib\db\_private;
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class _delete extends _common {
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const SCHEMA = [
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"prefix" => "?string",
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"from" => "?string",
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"where" => "?array",
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"suffix" => "?string",
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];
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static function isa(string $sql): bool {
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return preg_match("/^delete(?:\s+from)?\b/i", $sql);
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}
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static function parse(array $query, ?array &$bindings=null): string {
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#XXX implémentation minimale
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$tmpsql = self::merge_seq($query);
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self::consume('delete(?:\s+from)?\b', $tmpsql);
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$sql = ["delete from"];
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if ($tmpsql) $sql[] = $tmpsql;
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## préfixe
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$prefix = $query["prefix"] ?? null;
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if ($prefix !== null) $sql[] = $prefix;
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## table
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$from = $query["from"] ?? null;
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if ($from !== null) $sql[] = $from;
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## where
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$where = $query["where"] ?? null;
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if ($where !== null) {
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self::parse_conds($where, $wheresql, $bindings);
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if ($wheresql) {
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$sql[] = "where";
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$sql[] = implode(" and ", $wheresql);
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}
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}
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## suffixe
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$suffix = $query["suffix"] ?? null;
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if ($suffix !== null) $sql[] = $suffix;
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## fin de la requête
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return implode(" ", $sql);
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}
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}
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