Docs/examples/CI polish

.github/workflows/ci.yml

@@ -34,6 +34,19 @@ jobs:
           --health-interval 10s
           --health-timeout 5s
           --health-retries 30
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: pairity
+          POSTGRES_USER: postgres
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd "pg_isready -U postgres" 
+          --health-interval 10s 
+          --health-timeout 5s 
+          --health-retries 20
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -42,7 +55,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          extensions: pdo, pdo_mysql, pdo_sqlite, mongodb
+          extensions: pdo, pdo_mysql, pdo_sqlite, pdo_pgsql, mongodb
           coverage: none
 
       - name: Install dependencies
@@ -61,6 +74,15 @@ jobs:
           done
           mysql -h 127.0.0.1 -uroot -proot -e 'CREATE DATABASE IF NOT EXISTS pairity;'
 
+      - name: Prepare Postgres
+        run: |
+          for i in {1..30}; do
+            if pg_isready -h 127.0.0.1 -p 5432 -U postgres; then
+              break
+            fi
+            sleep 2
+          done
+
       - name: Run tests
         env:
           MYSQL_HOST: 127.0.0.1
@@ -70,5 +92,18 @@ jobs:
           MYSQL_PASS: root
           MONGO_HOST: 127.0.0.1
           MONGO_PORT: 27017
+          POSTGRES_HOST: 127.0.0.1
+          POSTGRES_PORT: 5432
+          POSTGRES_DB: pairity
+          POSTGRES_USER: postgres
+          POSTGRES_PASS: postgres
         run: |
           vendor/bin/phpunit --colors=always
+
+      - name: Static analysis (PHPStan)
+        run: |
+          if [ -f phpstan.neon.dist ]; then vendor/bin/phpstan analyse --no-progress || true; fi
+
+      - name: Style check (PHPCS)
+        run: |
+          if [ -f phpcs.xml.dist ]; then vendor/bin/phpcs || true; fi

CHANGELOG.md

@@ -0,0 +1,15 @@
+### Changelog
+
+All notable changes to this project will be documented in this file.
+
+#### Unreleased
+
+- Core ORM (DAO/DTO) with dynamic finders, `fields()` projection, relations (hasOne/hasMany/belongsTo), nested eager loading, per‑relation constraints, and SQL `belongsToMany` with pivot helpers (`attach`, `detach`, `sync`).
+- MongoDB production adapter (`ext-mongodb` + `mongodb/mongodb`) and Mongo DAO layer with relations (MVP), projections/sort/limit, pagination, and a small filter builder.
+- Pagination helpers for SQL and Mongo: `paginate` and `simplePaginate`.
+- Model metadata & schema mapping: column casts (incl. custom casters), timestamps, soft deletes.
+- Migrations & Schema Builder (portable): create/drop/alter; CLI (`vendor/bin/pairity`) with migrate/rollback/status/reset/make:migration. Drivers: MySQL/MariaDB, SQLite, PostgreSQL, SQL Server, Oracle.
+- Join‑based eager loading (opt‑in, SQL, single‑level) with safe fallbacks.
+- Unit of Work (opt‑in): identity map; deferred updates/deletes; relation‑aware delete cascades; optimistic locking; snapshot diffing (flagged); identity map controls; coalescing.
+- Event system: DAO and UoW events; listeners/subscribers.
+- CI: GitHub Actions matrix (PHP 8.1–8.3) with MySQL + Mongo services; guarded tests.

README.md

@@ -971,6 +971,28 @@ final class AuditSubscriber implements SubscriberInterface
 Events::dispatcher()->subscribe(new AuditSubscriber());
 ```
 
+## Performance knobs (Milestone G)
+
+Pairity includes a few opt‑in performance features. Defaults remain conservative and portable.
+
+- PDO prepared‑statement cache (bounded LRU):
+  - Internals: `Pairity\Database\PdoConnection` caches prepared statements by SQL string.
+  - API: `$conn->setStatementCacheSize(100);` (0 disables). Default: 100.
+
+- Query timing hook:
+  - API: `$conn->setQueryLogger(function(string $sql, array $params, float $ms) { /* log */ });`
+  - Called for both `query()` and `execute()`; zero overhead when unset.
+
+- Eager loader IN‑batching (SQL + Mongo):
+  - DAOs chunk large `IN (...)` / `$in` lookups to avoid huge parameter lists.
+  - API: `$dao->setInBatchSize(1000);` (default 1000) — affects internal relation fetches and `findAllWhereIn()`.
+
+- Metadata memoization:
+  - DAOs memoize `schema()` and `relations()` per instance to reduce repeated array building.
+  - No user action required; available automatically.
+
+Example UoW + locking + snapshots demo: see `examples/uow_locking_snapshot.php`.
+
 ## Roadmap
 
 - Relations enhancements:

examples/events_audit.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+require __DIR__ . '/../vendor/autoload.php';
+
+use Pairity\Database\ConnectionManager;
+use Pairity\Model\AbstractDto;
+use Pairity\Model\AbstractDao;
+use Pairity\Events\Events;
+
+// SQLite demo DB
+$conn = ConnectionManager::make([
+    'driver' => 'sqlite',
+    'path'   => __DIR__ . '/../db.sqlite',
+]);
+
+// Ensure table
+$conn->execute('CREATE TABLE IF NOT EXISTS audit_users (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  email TEXT,
+  name TEXT,
+  status TEXT
+)');
+
+class UserDto extends AbstractDto {}
+class UserDao extends AbstractDao {
+    public function getTable(): string { return 'audit_users'; }
+    protected function dtoClass(): string { return UserDto::class; }
+    protected function schema(): array { return ['primaryKey'=>'id','columns'=>[
+        'id'=>['cast'=>'int'],'email'=>['cast'=>'string'],'name'=>['cast'=>'string'],'status'=>['cast'=>'string']
+    ]]; }
+}
+
+// Simple audit buffer
+$audit = [];
+
+// Register listeners
+Events::dispatcher()->clear();
+Events::dispatcher()->listen('dao.beforeInsert', function(array &$p) {
+    if (($p['table'] ?? '') === 'audit_users') {
+        // normalize
+        $p['data']['email'] = strtolower((string)($p['data']['email'] ?? ''));
+    }
+});
+Events::dispatcher()->listen('dao.afterInsert', function(array &$p) use (&$audit) {
+    if (($p['table'] ?? '') === 'audit_users' && isset($p['dto'])) {
+        $audit[] = '[afterInsert] id=' . ($p['dto']->toArray(false)['id'] ?? '?');
+    }
+});
+Events::dispatcher()->listen('dao.afterUpdate', function(array &$p) use (&$audit) {
+    if (($p['table'] ?? '') === 'audit_users' && isset($p['dto'])) {
+        $audit[] = '[afterUpdate] id=' . ($p['dto']->toArray(false)['id'] ?? '?');
+    }
+});
+
+$dao = new UserDao($conn);
+
+// Clean for demo
+foreach ($dao->findAllBy() as $row) { $dao->deleteById((int)$row->toArray(false)['id']); }
+
+// Perform some ops
+$u = $dao->insert(['email' => 'AUDIT@EXAMPLE.COM', 'name' => 'Audit Me']);
+$id = (int)($u->toArray(false)['id'] ?? 0);
+$dao->update($id, ['name' => 'Audited']);
+
+echo "Audit log:\n" . implode("\n", $audit) . "\n";

examples/uow_locking_snapshot.php

@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+require __DIR__ . '/../vendor/autoload.php';
+
+use Pairity\Database\ConnectionManager;
+use Pairity\Model\AbstractDto;
+use Pairity\Model\AbstractDao;
+use Pairity\Orm\UnitOfWork;
+
+// SQLite demo DB (local file)
+$conn = ConnectionManager::make([
+    'driver' => 'sqlite',
+    'path'   => __DIR__ . '/../db.sqlite',
+]);
+
+// Ensure table
+$conn->execute('CREATE TABLE IF NOT EXISTS uow_users (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  name TEXT,
+  version INTEGER NOT NULL DEFAULT 0
+)');
+
+class UserDto extends AbstractDto {}
+
+class UserDao extends AbstractDao {
+    public function getTable(): string { return 'uow_users'; }
+    protected function dtoClass(): string { return UserDto::class; }
+    protected function schema(): array
+    {
+        return [
+            'primaryKey' => 'id',
+            'columns' => [
+                'id' => ['cast' => 'int'],
+                'name' => ['cast' => 'string'],
+                'version' => ['cast' => 'int'],
+            ],
+            // Enable optimistic locking on integer version column
+            'locking' => ['type' => 'version', 'column' => 'version'],
+        ];
+    }
+}
+
+$dao = new UserDao($conn);
+
+// Clean for demo
+foreach ($dao->findAllBy() as $row) {
+    $dao->deleteById((int)($row->toArray(false)['id'] ?? 0));
+}
+
+// Create one
+$u = $dao->insert(['name' => 'Alice']);
+$id = (int)($u->toArray(false)['id'] ?? 0);
+
+// Demonstrate UoW with snapshot diffing: modify DTO then commit
+UnitOfWork::run(function(UnitOfWork $uow) use ($dao, $id) {
+    // Enable snapshot diffing (optional)
+    $uow->enableSnapshots(true);
+
+    // Load and modify the DTO directly (no explicit update call)
+    $user = $dao->findById($id);
+    if ($user) {
+        // mutate DTO attributes
+        $user->setRelation('name', 'Alice (uow)');
+    }
+
+    // Also stage an explicit update to show coalescing
+    $dao->update($id, ['name' => 'Alice (explicit)']);
+});
+
+$after = $dao->findById($id);
+echo 'After UoW commit: ' . json_encode($after?->toArray(false)) . "\n";

src/Database/PdoConnection.php

@@ -9,6 +9,11 @@ use Pairity\Contracts\ConnectionInterface;
 class PdoConnection implements ConnectionInterface
 {
     private PDO $pdo;
+    /** @var array<string, \PDOStatement> */
+    private array $stmtCache = [];
+    private int $stmtCacheSize = 100; // LRU bound
+    /** @var null|callable */
+    private $queryLogger = null; // function(string $sql, array $params, float $ms): void
 
     public function __construct(PDO $pdo)
     {
@@ -17,18 +22,69 @@ class PdoConnection implements ConnectionInterface
         $this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
     }
 
+    /** Enable/disable a bounded prepared statement cache (default size 100). */
+    public function setStatementCacheSize(int $size): void
+    {
+        $this->stmtCacheSize = max(0, $size);
+        if ($this->stmtCacheSize === 0) {
+            $this->stmtCache = [];
+        } else if (count($this->stmtCache) > $this->stmtCacheSize) {
+            // trim
+            $this->stmtCache = array_slice($this->stmtCache, -$this->stmtCacheSize, null, true);
+        }
+    }
+
+    /** Set a logger callable to receive [sql, params, ms] for each query/execute. */
+    public function setQueryLogger(?callable $logger): void
+    {
+        $this->queryLogger = $logger;
+    }
+
+    private function prepare(string $sql): \PDOStatement
+    {
+        if ($this->stmtCacheSize <= 0) {
+            return $this->pdo->prepare($sql);
+        }
+        if (isset($this->stmtCache[$sql])) {
+            // Touch for LRU by moving to end
+            $stmt = $this->stmtCache[$sql];
+            unset($this->stmtCache[$sql]);
+            $this->stmtCache[$sql] = $stmt;
+            return $stmt;
+        }
+        $stmt = $this->pdo->prepare($sql);
+        $this->stmtCache[$sql] = $stmt;
+        // Enforce LRU bound
+        if (count($this->stmtCache) > $this->stmtCacheSize) {
+            array_shift($this->stmtCache);
+        }
+        return $stmt;
+    }
+
     public function query(string $sql, array $params = []): array
     {
-        $stmt = $this->pdo->prepare($sql);
+        $t0 = microtime(true);
+        $stmt = $this->prepare($sql);
         $stmt->execute($params);
-        return $stmt->fetchAll();
+        $rows = $stmt->fetchAll();
+        if ($this->queryLogger) {
+            $ms = (microtime(true) - $t0) * 1000.0;
+            try { ($this->queryLogger)($sql, $params, $ms); } catch (\Throwable) {}
+        }
+        return $rows;
     }
 
     public function execute(string $sql, array $params = []): int
     {
-        $stmt = $this->pdo->prepare($sql);
+        $t0 = microtime(true);
+        $stmt = $this->prepare($sql);
         $stmt->execute($params);
-        return $stmt->rowCount();
+        $count = $stmt->rowCount();
+        if ($this->queryLogger) {
+            $ms = (microtime(true) - $t0) * 1000.0;
+            try { ($this->queryLogger)($sql, $params, $ms); } catch (\Throwable) {}
+        }
+        return $count;
     }
 
     public function transaction(callable $callback): mixed

src/Model/AbstractDao.php

@@ -51,6 +51,11 @@ abstract class AbstractDao implements DaoInterface
      * 'join' opts in to join-based eager loading for supported SQL relations (single level).
      */
     private ?string $eagerStrategy = null;
+    /** Memoized schema/relations for perf */
+    private ?array $schemaCache = null;
+    private ?array $relationsCache = null;
+    /** Eager IN batching size for related queries */
+    protected int $inBatchSize = 1000;
 
     public function __construct(ConnectionInterface $connection)
     {
@@ -94,6 +99,13 @@ abstract class AbstractDao implements DaoInterface
         return [];
     }
 
+    /** Override point: set eager IN batching size (default 1000). */
+    public function setInBatchSize(int $size): static
+    {
+        $this->inBatchSize = max(1, $size);
+        return $this;
+    }
+
     public function getPrimaryKey(): string
     {
         $schema = $this->getSchema();
@@ -482,7 +494,7 @@ abstract class AbstractDao implements DaoInterface
     /** Expose relation metadata for UoW ordering/cascades. */
     public function relationMap(): array
     {
-        return $this->relations();
+        return $this->getRelations();
     }
 
     /**
@@ -530,21 +542,26 @@ abstract class AbstractDao implements DaoInterface
             return [];
         }
         $values = array_values(array_unique($values, SORT_REGULAR));
+        $chunks = array_chunk($values, max(1, (int)$this->inBatchSize));
+        $selectList = $selectFields && $selectFields !== ['*'] ? implode(', ', $selectFields) : $this->selectList();
+        $dtos = [];
+        foreach ($chunks as $chunkIdx => $chunk) {
             $placeholders = [];
             $bindings = [];
-        foreach ($values as $i => $val) {
+            foreach ($chunk as $i => $val) {
-            $ph = "in_{$i}";
+                $ph = "in_{$chunkIdx}_{$i}";
                 $placeholders[] = ":{$ph}";
                 $bindings[$ph] = $val;
             }
-        $selectList = $selectFields && $selectFields !== ['*']
-            ? implode(', ', $selectFields)
-            : $this->selectList();
             $where = $column . ' IN (' . implode(', ', $placeholders) . ')';
             $where = $this->appendScopedWhere($where);
             $sql = 'SELECT ' . $selectList . ' FROM ' . $this->getTable() . ' WHERE ' . $where;
             $rows = $this->connection->query($sql, $bindings);
-        return array_map(fn($r) => $this->hydrate($this->castRowFromStorage($r)), $rows);
+            foreach ($rows as $r) {
+                $dtos[] = $this->hydrate($this->castRowFromStorage($r));
+            }
+        }
+        return $dtos;
     }
 
     /**
@@ -660,7 +677,7 @@ abstract class AbstractDao implements DaoInterface
     protected function attachRelations(array $parents): void
     {
         if (!$parents) return;
-        $relations = $this->relations();
+        $relations = $this->getRelations();
         foreach ($this->with as $name) {
             if (!isset($relations[$name])) {
                 continue; // silently ignore unknown
@@ -904,7 +921,7 @@ abstract class AbstractDao implements DaoInterface
         $joins = [];
         $meta = [ 'rels' => [] ];
 
-        $relations = $this->relations();
+        $relations = $this->getRelations();
         $aliasIndex = 1;
         foreach ($this->with as $name) {
             if (!isset($relations[$name])) continue;
@@ -1041,7 +1058,7 @@ abstract class AbstractDao implements DaoInterface
     public function attach(string $relationName, int|string $parentId, array $relatedIds): int
     {
         if (!$relatedIds) return 0;
-        $cfg = $this->relations()[$relationName] ?? null;
+        $cfg = $this->getRelations()[$relationName] ?? null;
         if (!is_array($cfg) || ($cfg['type'] ?? '') !== 'belongsToMany') {
             throw new \InvalidArgumentException("Relation '{$relationName}' is not a belongsToMany relation");
         }
@@ -1071,7 +1088,7 @@ abstract class AbstractDao implements DaoInterface
      */
     public function detach(string $relationName, int|string $parentId, array $relatedIds = []): int
     {
-        $cfg = $this->relations()[$relationName] ?? null;
+        $cfg = $this->getRelations()[$relationName] ?? null;
         if (!is_array($cfg) || ($cfg['type'] ?? '') !== 'belongsToMany') {
             throw new \InvalidArgumentException("Relation '{$relationName}' is not a belongsToMany relation");
         }
@@ -1100,7 +1117,7 @@ abstract class AbstractDao implements DaoInterface
      */
     public function sync(string $relationName, int|string $parentId, array $relatedIds): array
     {
-        $cfg = $this->relations()[$relationName] ?? null;
+        $cfg = $this->getRelations()[$relationName] ?? null;
         if (!is_array($cfg) || ($cfg['type'] ?? '') !== 'belongsToMany') {
             throw new \InvalidArgumentException("Relation '{$relationName}' is not a belongsToMany relation");
         }
@@ -1240,7 +1257,21 @@ abstract class AbstractDao implements DaoInterface
 
     protected function getSchema(): array
     {
-        return $this->schema();
+        if ($this->schemaCache !== null) {
+            return $this->schemaCache;
+        }
+        $this->schemaCache = $this->schema();
+        return $this->schemaCache;
+    }
+
+    /** Return memoized relations metadata. */
+    protected function getRelations(): array
+    {
+        if ($this->relationsCache !== null) {
+            return $this->relationsCache;
+        }
+        $this->relationsCache = $this->relations();
+        return $this->relationsCache;
     }
 
     protected function hasSoftDeletes(): bool

src/NoSql/Mongo/AbstractMongoDao.php

@@ -44,6 +44,11 @@ abstract class AbstractMongoDao
     /** @var array<string, callable> */
     private array $namedScopes = [];
 
+    /** Memoized relations */
+    private ?array $relationsCache = null;
+    /** Eager IN batching size for related lookups */
+    protected int $inBatchSize = 1000;
+
     public function __construct(MongoConnectionInterface $connection)
     {
         $this->connection = $connection;
@@ -67,6 +72,23 @@ abstract class AbstractMongoDao
         return [];
     }
 
+    /** Return memoized relations map. */
+    protected function getRelations(): array
+    {
+        if ($this->relationsCache !== null) {
+            return $this->relationsCache;
+        }
+        $this->relationsCache = $this->relations();
+        return $this->relationsCache;
+    }
+
+    /** Override point: set eager IN batching size (default 1000). */
+    public function setInBatchSize(int $size): static
+    {
+        $this->inBatchSize = max(1, $size);
+        return $this;
+    }
+
     // ========= Query modifiers =========
 
     /**
@@ -295,11 +317,17 @@ abstract class AbstractMongoDao
         if (!$values) return [];
         // Normalize values (unique)
         $values = array_values(array_unique($values));
-        $filter = [ $field => ['$in' => $values] ];
+        $chunks = array_chunk($values, max(1, (int)$this->inBatchSize));
+        $dtos = [];
+        foreach ($chunks as $chunk) {
+            $filter = [ $field => ['$in' => $chunk] ];
             $this->applyRuntimeScopesToFilter($filter);
             $opts = $this->buildOptions();
             $docs = $this->connection->find($this->databaseName(), $this->collection(), $filter, $opts);
-        return array_map(fn($d) => $this->hydrate($d), is_iterable($docs) ? $docs : []);
+            $iter = is_iterable($docs) ? $docs : [];
+            foreach ($iter as $d) { $dtos[] = $this->hydrate($d); }
+        }
+        return $dtos;
     }
 
     // ========= Dynamic helpers =========
@@ -523,7 +551,7 @@ abstract class AbstractMongoDao
     protected function attachRelations(array $parents): void
     {
         if (!$parents) return;
-        $relations = $this->relations();
+        $relations = $this->getRelations();
         foreach ($this->with as $name) {
             if (!isset($relations[$name])) continue;
             $cfg = $relations[$name];

tests/PostgresSmokeTest.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pairity\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Pairity\Database\ConnectionManager;
+use Pairity\Schema\SchemaManager;
+use Pairity\Schema\Blueprint;
+
+final class PostgresSmokeTest extends TestCase
+{
+    private function pgConfig(): array
+    {
+        $host = getenv('POSTGRES_HOST') ?: null;
+        if (!$host) {
+            $this->markTestSkipped('POSTGRES_HOST not set; skipping Postgres smoke test');
+        }
+        return [
+            'driver' => 'pgsql',
+            'host' => $host,
+            'port' => (int)(getenv('POSTGRES_PORT') ?: 5432),
+            'database' => getenv('POSTGRES_DB') ?: 'pairity',
+            'username' => getenv('POSTGRES_USER') ?: 'postgres',
+            'password' => getenv('POSTGRES_PASS') ?: 'postgres',
+        ];
+    }
+
+    public function testCreateAlterDropCycle(): void
+    {
+        $cfg = $this->pgConfig();
+        $conn = ConnectionManager::make($cfg);
+        $schema = SchemaManager::forConnection($conn);
+
+        $suffix = substr(sha1((string)microtime(true)), 0, 6);
+        $table = 'pg_smoke_' . $suffix;
+
+        // Create
+        $schema->create($table, function (Blueprint $t) {
+            $t->increments('id');
+            $t->string('name', 100);
+        });
+
+        $rows = $conn->query('SELECT tablename FROM pg_tables WHERE tablename = :t', ['t' => $table]);
+        $this->assertNotEmpty($rows, 'Table should be created');
+
+        // Alter add column
+        $schema->table($table, function (Blueprint $t) {
+            $t->integer('qty');
+        });
+        $cols = $conn->query('SELECT column_name FROM information_schema.columns WHERE table_name = :t', ['t' => $table]);
+        $names = array_map(fn($r) => $r['column_name'] ?? '', $cols);
+        $this->assertContains('qty', $names);
+
+        // Drop
+        $schema->drop($table);
+        $rows = $conn->query('SELECT tablename FROM pg_tables WHERE tablename = :t', ['t' => $table]);
+        $this->assertEmpty($rows, 'Table should be dropped');
+    }
+}