242 lines
6.5 KiB
PHP
242 lines
6.5 KiB
PHP
<?php
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namespace nur\sery\db\sqlite;
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use nur\sery\cl;
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use nur\sery\db\CapacitorChannel;
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use nur\sery\db\CapacitorStorage;
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use nur\sery\php\func;
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use nur\sery\ValueException;
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/**
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* Class SqliteCapacitor
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*/
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class SqliteCapacitor extends CapacitorStorage {
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function __construct($sqlite) {
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$this->sqlite = Sqlite::with($sqlite);
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}
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/** @var Sqlite */
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protected $sqlite;
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function sqlite(): Sqlite {
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return $this->sqlite;
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}
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protected function _create(CapacitorChannel $channel): void {
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if (!$channel->isCreated()) {
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$columns = cl::merge([
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"_id" => "integer primary key autoincrement",
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"_item" => "text",
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"_sum" => "varchar(40)",
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"_created" => "datetime",
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"_modified" => "datetime",
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], $channel->getKeyDefinitions());
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$this->sqlite->exec([
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"create table if not exists",
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"table" => $channel->getTableName(),
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"cols" => $columns,
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]);
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$channel->setCreated();
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}
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}
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/** @var CapacitorChannel[] */
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protected $channels;
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function addChannel(CapacitorChannel $channel): CapacitorChannel {
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$this->_create($channel);
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$this->channels[$channel->getName()] = $channel;
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return $channel;
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}
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protected function getChannel(?string $name): CapacitorChannel {
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$name = CapacitorChannel::verifix_name($name);
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$channel = $this->channels[$name] ?? null;
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if ($channel === null) {
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$channel = $this->addChannel(new CapacitorChannel($name));
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}
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return $channel;
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}
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function _exists(CapacitorChannel $channel): bool {
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$tableName = $this->sqlite->get([
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"select name from sqlite_schema",
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"where" => [
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"name" => $channel->getTableName(),
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],
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]);
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return $tableName !== null;
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}
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function _ensureExists(CapacitorChannel $channel): void {
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$this->_create($channel);
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}
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function _reset(CapacitorChannel $channel): void {
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$this->sqlite->exec([
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"drop table if exists",
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$channel->getTableName(),
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]);
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$channel->setCreated(false);
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}
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function _charge(CapacitorChannel $channel, $item, ?callable $func, ?array $args): int {
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$this->_create($channel);
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$now = date("Y-m-d H:i:s");
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$_item = serialize($item);
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$_sum = sha1($_item);
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$values = cl::merge([
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"_item" => $_item,
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"_sum" => $_sum,
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], $channel->getKeyValues($item));
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$row = null;
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$id = $values["_id"] ?? null;
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if ($id !== null) {
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# modification
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$row = $this->sqlite->one([
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"select _item, _sum, _created, _modified",
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"from" => $channel->getTableName(),
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"where" => ["_id" => $id],
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]);
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}
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$insert = null;
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if ($row === null) {
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# création
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$values = cl::merge($values, [
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"_created" => $now,
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"_modified" => $now,
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]);
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$insert = true;
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} elseif ($_sum !== $row["_sum"]) {
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# modification
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$values = cl::merge($values, [
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"_modified" => $now,
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]);
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$insert = false;
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}
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if ($func === null) $func = [$channel, "onCharge"];
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$onCharge = func::_prepare($func);
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$args ??= [];
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$updates = func::_call($onCharge, [$item, $values, $row, ...$args]);
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if (is_array($updates)) {
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if (array_key_exists("_item", $updates)) {
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$_item = serialize($updates["_item"]);
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$updates["_item"] = $_item;
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$updates["_sum"] = sha1($_item);
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if (!array_key_exists("_modified", $updates)) {
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$updates["_modified"] = $now;
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}
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}
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$values = cl::merge($values, $updates);
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}
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if ($insert === null) {
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# aucune modification
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return 0;
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} elseif ($insert) {
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$this->sqlite->exec([
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"insert",
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"into" => $channel->getTableName(),
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"values" => $values,
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]);
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} else {
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$this->sqlite->exec([
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"update",
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"table" => $channel->getTableName(),
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"values" => $values,
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"where" => ["_id" => $id],
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]);
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}
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return 1;
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}
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function _count(CapacitorChannel $channel, $filter): int {
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if ($filter !== null && !is_array($filter)) $filter = ["_id" => $filter];
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return $this->sqlite->get([
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"select count(*)",
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"from" => $channel->getTableName(),
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"where" => $filter,
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]);
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}
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function _discharge(CapacitorChannel $channel, $filter, ?bool $reset): iterable {
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if ($filter !== null && !is_array($filter)) $filter = ["_id" => $filter];
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if ($reset === null) $reset = $filter === null;
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$rows = $this->sqlite->all([
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"select _item",
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"from" => $channel->getTableName(),
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"where" => $filter,
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]);
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foreach ($rows as $row) {
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$item = unserialize($row['_item']);
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yield $item;
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}
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if ($reset) $this->_reset($channel);
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}
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function _get(CapacitorChannel $channel, $filter) {
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if ($filter === null) throw ValueException::null("keys");
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if (!is_array($filter)) $filter = ["_id" => $filter];
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$row = $this->sqlite->one([
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"select _item",
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"from" => $channel->getTableName(),
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"where" => $filter,
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]);
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if ($row === null) return null;
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else return unserialize($row["_item"]);
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}
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function _each(CapacitorChannel $channel, $filter, ?callable $func, ?array $args): int {
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if ($func === null) $func = [$channel, "onEach"];
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$onEach = func::_prepare($func);
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if ($filter !== null && !is_array($filter)) $filter = ["_id" => $filter];
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$sqlite = $this->sqlite;
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$tableName = $channel->getTableName();
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$commited = false;
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$count = 0;
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$sqlite->beginTransaction();
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$commitThreshold = $channel->getEachCommitThreshold();
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try {
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$rows = $sqlite->all([
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"select",
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"from" => $tableName,
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"where" => $filter,
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]);
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$args ??= [];
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foreach ($rows as $row) {
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$item = unserialize($row['_item']);
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$updates = func::_call($onEach, [$item, $row, ...$args]);
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if (is_array($updates)) {
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if (array_key_exists("_item", $updates)) {
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$updates["_item"] = serialize($updates["_item"]);
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}
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$sqlite->exec([
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"update",
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"table" => $tableName,
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"values" => $updates,
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"where" => ["_id" => $row["_id"]],
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]);
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if ($commitThreshold !== null) {
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$commitThreshold--;
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if ($commitThreshold == 0) {
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$sqlite->commit();
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$commitThreshold = $channel->getEachCommitThreshold();
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}
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}
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}
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$count++;
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}
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$sqlite->commit();
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$commited = true;
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return $count;
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} finally {
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if (!$commited) $sqlite->rollback();
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}
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}
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function close(): void {
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$this->sqlite->close();
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}
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}
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