Realize column factory

CHANGELOG.md

@@ -34,6 +34,7 @@
 - Enh #862: Refactor PHP type of `ColumnSchemaInterface` instances (@Tigrov)
 - Enh #865: Raise minimum PHP version to `^8.1` with minor refactoring (@Tigrov, @vjik)
 - Enh #798: Allow `QueryInterface::one()` and `QueryInterface::all()` to return objects (@darkdef, @Tigrov)
+- Enh #864: Realize column factory (@Tigrov)
 - Enh #875: Ignore "Packets out of order..." warnings in `AbstractPdoCommand::internalExecute()` method (@Tigrov)
 
 ## 1.3.0 March 21, 2024

UPGRADE.md

@@ -67,6 +67,7 @@ and the following changes were made:
 - `getName()` method can return `string` or `null`;
 - `getPhpType()` method must return `string` PHP type of the column which used for generating related model properties;
 - `name(string|null $name)` method is added;
+- `load(array $info)` method is added;
 - constructor of `AbstractColumnSchema` class is changed to `__construct(string $type, string|null $phpType = null)`;
 - added method chaining.
 
@@ -88,9 +89,10 @@ Each table column has its own class in the `Yiisoft\Db\Schema\Column` namespace
 - `BinaryColumnSchema` for columns with binary type;
 - `JsonColumnSchema` for columns with json type.
 
-### New methods in `QuoterInterface`
+### New methods
 
-- `QuoterInterface::getRawTableName()` - returns the raw table name without quotes.
+- `QuoterInterface::getRawTableName()` - returns the raw table name without quotes;
+- `SchemaInterface::getColumnFactory()` - returns the column factory.
 
 ### Remove methods
 

src/Schema/AbstractSchema.php

@@ -13,15 +13,6 @@
 use Yiisoft\Db\Constraint\IndexConstraint;
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Constant\GettypeResult;
-use Yiisoft\Db\Schema\Column\BinaryColumnSchema;
-use Yiisoft\Db\Schema\Column\BitColumnSchema;
-use Yiisoft\Db\Schema\Column\BooleanColumnSchema;
-use Yiisoft\Db\Schema\Column\ColumnSchemaInterface;
-use Yiisoft\Db\Schema\Column\DoubleColumnSchema;
-use Yiisoft\Db\Schema\Column\IntegerColumnSchema;
-use Yiisoft\Db\Schema\Column\JsonColumnSchema;
-use Yiisoft\Db\Schema\Column\StringColumnSchema;
-use Yiisoft\Db\Schema\Column\BigIntColumnSchema;
 
 use function gettype;
 use function is_array;
@@ -374,49 +365,6 @@ protected function findTableNames(string $schema): array
         throw new NotSupportedException(static::class . ' does not support fetching all table names.');
     }
 
-    /**
-     * Creates a column schema for the database.
-     *
-     * This method may be overridden by child classes to create a DBMS-specific column schema.
-     *
-     * @param string $type The abstract data type.
-     * @param mixed ...$info The column information.
-     * @psalm-param array{unsigned?: bool} $info The set of parameters may be different for a specific DBMS.
-     *
-     * @return ColumnSchemaInterface
-     */
-    protected function createColumnSchema(string $type, mixed ...$info): ColumnSchemaInterface
-    {
-        $isUnsigned = !empty($info['unsigned']);
-
-        $column = $this->createColumnSchemaFromType($type, $isUnsigned);
-        $column->unsigned($isUnsigned);
-
-        return $column;
-    }
-
-    protected function createColumnSchemaFromType(string $type, bool $isUnsigned = false): ColumnSchemaInterface
-    {
-        return match ($type) {
-            SchemaInterface::TYPE_BOOLEAN => new BooleanColumnSchema($type),
-            SchemaInterface::TYPE_BIT => new BitColumnSchema($type),
-            SchemaInterface::TYPE_TINYINT => new IntegerColumnSchema($type),
-            SchemaInterface::TYPE_SMALLINT => new IntegerColumnSchema($type),
-            SchemaInterface::TYPE_INTEGER => PHP_INT_SIZE !== 8 && $isUnsigned
-                ? new BigIntColumnSchema($type)
-                : new IntegerColumnSchema($type),
-            SchemaInterface::TYPE_BIGINT => PHP_INT_SIZE !== 8 || $isUnsigned
-                ? new BigIntColumnSchema($type)
-                : new IntegerColumnSchema($type),
-            SchemaInterface::TYPE_DECIMAL => new DoubleColumnSchema($type),
-            SchemaInterface::TYPE_FLOAT => new DoubleColumnSchema($type),
-            SchemaInterface::TYPE_DOUBLE => new DoubleColumnSchema($type),
-            SchemaInterface::TYPE_BINARY => new BinaryColumnSchema($type),
-            SchemaInterface::TYPE_JSON => new JsonColumnSchema($type),
-            default => new StringColumnSchema($type),
-        };
-    }
-
     /**
      * Returns the metadata of the given type for all tables in the given schema.
      *

src/Schema/Column/AbstractColumnFactory.php

@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Db\Schema\Column;
+
+use Yiisoft\Db\Schema\SchemaInterface;
+
+use function explode;
+use function preg_match;
+use function str_ireplace;
+use function stripos;
+use function strlen;
+use function strtolower;
+use function substr;
+use function trim;
+
+use const PHP_INT_SIZE;
+
+/**
+ * The default implementation of the {@see ColumnFactoryInterface}.
+ *
+ * @psalm-import-type ColumnInfo from ColumnSchemaInterface
+ * @psalm-suppress MixedArgumentTypeCoercion
+ */
+abstract class AbstractColumnFactory implements ColumnFactoryInterface
+{
+    /**
+     * Get the abstract database type for a database column type.
+     *
+     * @param string $dbType The database column type.
+     * @param array $info The column information.
+     *
+     * @return string The abstract database type.
+     *
+     * @psalm-param ColumnInfo $info
+     */
+    abstract protected function getType(string $dbType, array $info = []): string;
+
+    public function fromDbType(string $dbType, array $info = []): ColumnSchemaInterface
+    {
+        $info['db_type'] = $dbType;
+        $type = $info['type'] ?? $this->getType($dbType, $info);
+
+        return $this->fromType($type, $info);
+    }
+
+    public function fromDefinition(string $definition, array $info = []): ColumnSchemaInterface
+    {
+        preg_match('/^(\w*)(?:\(([^)]+)\))?\s*/', $definition, $matches);
+
+        $dbType = strtolower($matches[1]);
+
+        if (isset($matches[2])) {
+            $values = explode(',', $matches[2]);
+            $info['size'] = (int) $values[0];
+            $info['precision'] = (int) $values[0];
+
+            if (isset($values[1])) {
+                $info['scale'] = (int) $values[1];
+            }
+        }
+
+        $extra = substr($definition, strlen($matches[0]));
+
+        if (!empty($extra)) {
+            if (stripos($extra, 'unsigned') !== false) {
+                $info['unsigned'] = true;
+                $extra = trim(str_ireplace('unsigned', '', $extra));
+            }
+
+            if (!empty($extra)) {
+                if (empty($info['extra'])) {
+                    $info['extra'] = $extra;
+                } else {
+                    /** @psalm-suppress MixedOperand */
+                    $info['extra'] = $extra . ' ' . $info['extra'];
+                }
+            }
+        }
+
+        return $this->fromDbType($dbType, $info);
+    }
+
+    public function fromType(string $type, array $info = []): ColumnSchemaInterface
+    {
+        $column = match ($type) {
+            SchemaInterface::TYPE_BOOLEAN => new BooleanColumnSchema($type),
+            SchemaInterface::TYPE_BIT => new BitColumnSchema($type),
+            SchemaInterface::TYPE_TINYINT => new IntegerColumnSchema($type),
+            SchemaInterface::TYPE_SMALLINT => new IntegerColumnSchema($type),
+            SchemaInterface::TYPE_INTEGER => PHP_INT_SIZE !== 8 && !empty($info['unsigned'])
+                ? new BigIntColumnSchema($type)
+                : new IntegerColumnSchema($type),
+            SchemaInterface::TYPE_BIGINT => PHP_INT_SIZE !== 8 || !empty($info['unsigned'])
+                ? new BigIntColumnSchema($type)
+                : new IntegerColumnSchema($type),
+            SchemaInterface::TYPE_DECIMAL => new DoubleColumnSchema($type),
+            SchemaInterface::TYPE_FLOAT => new DoubleColumnSchema($type),
+            SchemaInterface::TYPE_DOUBLE => new DoubleColumnSchema($type),
+            SchemaInterface::TYPE_BINARY => new BinaryColumnSchema($type),
+            SchemaInterface::TYPE_JSON => new JsonColumnSchema($type),
+            default => new StringColumnSchema($type),
+        };
+
+        return $column->load($info);
+    }
+}

src/Schema/Column/AbstractColumnSchema.php

@@ -6,6 +6,8 @@
 
 use Yiisoft\Db\Constant\PhpType;
 
+use function is_array;
+
 /**
  * Represents the metadata of a column in a database table.
  *
@@ -21,11 +23,10 @@
  * ```php
  * use Yiisoft\Db\Schema\ColumnSchema;
  *
- * $column = (new ColumnSchema())
+ * $column = (new IntegerColumnSchema())
  *     ->name('id')
  *     ->allowNull(false)
  *     ->dbType('int(11)')
- *     ->phpType('integer')
  *     ->type('integer')
  *     ->defaultValue(0)
  *     ->autoIncrement()
@@ -182,6 +183,35 @@ public function isUnsigned(): bool
         return $this->unsigned;
     }
 
+    public function load(array $info): static
+    {
+        foreach ($info as $key => $value) {
+            /**
+             * @psalm-suppress PossiblyInvalidCast
+             * @psalm-suppress RiskyCast
+             */
+            match ($key) {
+                'allow_null' => $this->allowNull((bool) $value),
+                'auto_increment' => $this->autoIncrement((bool) $value),
+                'comment' => $this->comment($value !== null ? (string) $value : null),
+                'computed' => $this->computed((bool) $value),
+                'db_type' => $this->dbType($value !== null ? (string) $value : null),
+                'default_value' => $this->defaultValue($value),
+                'enum_values' => $this->enumValues(is_array($value) ? $value : null),
+                'extra' => $this->extra($value !== null ? (string) $value : null),
+                'name' => $this->name($value !== null ? (string) $value : null),
+                'primary_key' => $this->primaryKey((bool) $value),
+                'precision' => $this->precision($value !== null ? (int) $value : null),
+                'scale' => $this->scale($value !== null ? (int) $value : null),
+                'size' => $this->size($value !== null ? (int) $value : null),
+                'unsigned' => $this->unsigned((bool) $value),
+                default => null,
+            };
+        }
+
+        return $this;
+    }
+
     public function name(string|null $name): static
     {
         $this->name = $name;

src/Schema/Column/ColumnFactoryInterface.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Db\Schema\Column;
+
+/**
+ * The interface must be implemented by a column factory class. It should create a column schema for a database column
+ * type and initialize column information.
+ *
+ * @psalm-import-type ColumnInfo from ColumnSchemaInterface
+ */
+interface ColumnFactoryInterface
+{
+    /**
+     * Creates a column schema for a database column type and initializes column information.
+     *
+     * @param string $dbType The database column type.
+     * @param array $info The column information.
+     *
+     * @psalm-param ColumnInfo $info The set of parameters may be different for a specific DBMS.
+     */
+    public function fromDbType(string $dbType, array $info = []): ColumnSchemaInterface;
+
+    /**
+     * Creates a column schema for a database column definition and initializes column information.
+     *
+     * @param string $definition The database column definition.
+     * @param array $info The column information.
+     *
+     * @psalm-param ColumnInfo $info The set of parameters may be different for a specific DBMS.
+     */
+    public function fromDefinition(string $definition, array $info = []): ColumnSchemaInterface;
+
+    /**
+     * Creates a column schema for an abstract database type and initializes column information.
+     *
+     * @param string $type The abstract database type.
+     * @param array $info The column information.
+     *
+     * @psalm-param ColumnInfo $info The set of parameters may be different for a specific DBMS.
+     */
+    public function fromType(string $type, array $info = []): ColumnSchemaInterface;
+}

src/Schema/Column/ColumnSchemaInterface.php

@@ -9,6 +9,27 @@
 /**
  * This interface defines a set of methods that must be implemented by a class that represents the column schema of a
  * database table column.
+ *
+ * @psalm-type ColumnInfo = array{
+ *     allow_null?: bool|string|null,
+ *     auto_increment?: bool|string,
+ *     comment?: string|null,
+ *     computed?: bool|string,
+ *     db_type?: string|null,
+ *     default_value?: mixed,
+ *     enum_values?: array|null,
+ *     extra?: string|null,
+ *     primary_key?: bool|string,
+ *     name?: string|null,
+ *     precision?: int|string|null,
+ *     scale?: int|string|null,
+ *     schema?: string|null,
+ *     size?: int|string|null,
+ *     table?: string|null,
+ *     type?: string,
+ *     unsigned?: bool|string,
+ *     ...<string, mixed>
+ * }
  */
 interface ColumnSchemaInterface
 {
@@ -250,7 +271,14 @@ public function isPrimaryKey(): bool;
     public function isUnsigned(): bool;
 
     /**
-     * Sets the name of the column.
+     * Loads the column's schema information from an array.
+     *
+     * @psalm-param ColumnInfo $info
+     */
+    public function load(array $info): static;
+
+    /**
+     * Sets a name of the column.
      *
      * ```php
      * $columns = [

src/Schema/SchemaInterface.php

@@ -11,6 +11,7 @@
 use Yiisoft\Db\Exception\InvalidConfigException;
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Schema\Builder\ColumnInterface;
+use Yiisoft\Db\Schema\Column\ColumnFactoryInterface;
 
 /**
  * Represents the schema for a database table.
@@ -228,6 +229,11 @@ interface SchemaInterface extends ConstraintSchemaInterface
      */
     public function createColumn(string $type, array|int|string $length = null): ColumnInterface;
 
+    /**
+     * Returns the column factory for creating column instances.
+     */
+    public function getColumnFactory(): ColumnFactoryInterface;
+
     /**
      * @return string|null The default schema name.
      */