Add $ifExists and $cascade to dropTable() methods

CHANGELOG.md

@@ -33,6 +33,8 @@
 - New #301: Add `IndexType` class (@Tigrov)
 - New #303: Support JSON type (@Tigrov)
 - Bug #305: Explicitly mark nullable parameters (@vjik)
+- New #307: Add parameters `$ifExists` and `$cascade` to `CommandInterface::dropTable()` and
+  `DDLQueryBuilderInterface::dropTable()` methods (@vjik)
 
 ## 1.3.0 March 21, 2024
 

src/DDLQueryBuilder.php

@@ -83,6 +83,19 @@ public function dropIndex(string $table, string $name): string
         return 'DROP INDEX ' . $this->quoter->quoteTableName($name);
     }
 
+    /**
+     * @throws NotSupportedException Oracle doesn't support "IF EXISTS" option on drop table.
+     */
+    public function dropTable(string $table, bool $ifExists = false, bool $cascade = false): string
+    {
+        if ($ifExists) {
+            throw new NotSupportedException('Oracle doesn\'t support "IF EXISTS" option on drop table.');
+        }
+        return 'DROP TABLE '
+            . $this->quoter->quoteTableName($table)
+            . ($cascade ? ' CASCADE CONSTRAINTS' : '');
+    }
+
     public function renameTable(string $oldName, string $newName): string
     {
         return 'ALTER TABLE ' . $this->quoter->quoteTableName($oldName) . ' RENAME TO ' .

tests/CommandTest.php

@@ -269,6 +269,25 @@ public function testDropDefaultValue(): void
         $command->dropDefaultValue('{{table}}', '{{name}}');
     }
 
+    public function testDropTableIfExists(): void
+    {
+        $command = $this->getConnection()->createCommand();
+
+        $this->expectException(NotSupportedException::class);
+        $this->expectExceptionMessage('Oracle doesn\'t support "IF EXISTS" option on drop table.');
+        $command->dropTable('{{table}}', ifExists: true);
+    }
+
+    public function testDropTableIfExistsWithExistTable(): void
+    {
+        $this->markTestSkipped('Oracle doesn\'t support "IF EXISTS" option on drop table.');
+    }
+
+    public function testDropTableIfExistsWithNonExistTable(): void
+    {
+        $this->markTestSkipped('Oracle doesn\'t support "IF EXISTS" option on drop table.');
+    }
+
     /**
      * @throws Exception
      * @throws InvalidConfigException

tests/QueryBuilderTest.php

@@ -4,6 +4,7 @@
 
 namespace Yiisoft\Db\Oracle\Tests;
 
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\DataProviderExternal;
 use Throwable;
 use Yiisoft\Db\Exception\Exception;
@@ -681,4 +682,27 @@ public function testPrepareValue(string $expected, mixed $value): void
     {
         parent::testPrepareValue($expected, $value);
     }
+
+    #[DataProvider('dataDropTable')]
+    public function testDropTable(string $expected, ?bool $ifExists, ?bool $cascade): void
+    {
+        if ($ifExists) {
+            $qb = $this->getConnection()->getQueryBuilder();
+
+            $this->expectException(NotSupportedException::class);
+            $this->expectExceptionMessage('Oracle doesn\'t support "IF EXISTS" option on drop table.');
+
+            $cascade === null
+                ? $qb->dropTable('customer', ifExists: true)
+                : $qb->dropTable('customer', ifExists: true, cascade: $cascade);
+
+            return;
+        }
+
+        if ($cascade) {
+            $expected = str_replace('CASCADE', 'CASCADE CONSTRAINTS', $expected);
+        }
+
+        parent::testDropTable($expected, $ifExists, $cascade);
+    }
 }