Add XML writer

composer.json

@@ -17,6 +17,7 @@
         "ext-json": "*",
         "ext-mbstring": "*",
         "ext-xmlreader": "*",
+        "ext-xmlwriter": "*",
         "ext-zlib": "*",
         "composer-runtime-api": "^2.1",
         "coduo/php-humanizer": "^4.0",
@@ -33,7 +34,8 @@
         "psr/log": "^2.0 || ^3.0",
         "psr/simple-cache": "^1.0 || ^2.0 || ^3.0",
         "symfony/console": "^6.3 || ^7.0",
-        "webmozart/glob": "^3.0 || ^4.0"
+        "webmozart/glob": "^3.0 || ^4.0",
+        "veewee/xml": "^2.13.0"
     },
     "require-dev": {
         "aeon-php/calendar": "^1.0",

src/adapter/etl-adapter-avro/src/Flow/ETL/Adapter/Avro/FlixTech/AvroLoader.php

@@ -64,6 +64,7 @@ public function load(Rows $rows, FlowContext $context) : void
                     Row\Entry\DateTimeEntry::class => (int) $entry->value()->format('Uu'),
                     Row\Entry\UuidEntry::class => $entry->value()->toString(),
                     Row\Entry\EnumEntry::class => $entry->value()->name,
+                    Row\Entry\XMLEntry::class => $entry->toString(),
                     default => $entry->value(),
                 };
             }

src/adapter/etl-adapter-parquet/src/Flow/ETL/Adapter/Parquet/RowsNormalizer.php

@@ -3,6 +3,7 @@
 namespace Flow\ETL\Adapter\Parquet;
 
 use Flow\ETL\Row\Entry\UuidEntry;
+use Flow\ETL\Row\Entry\XMLEntry;
 use Flow\ETL\Rows;
 
 final class RowsNormalizer
@@ -20,6 +21,7 @@ public function normalize(Rows $rows) : array
             foreach ($row->entries() as $entry) {
                 $columns[$entry->name()] = match ($entry::class) {
                     UuidEntry::class => $entry->value()->toString(),
+                    XMLEntry::class => $entry->toString(),
                     default => $entry->value(),
                 };
             }

src/adapter/etl-adapter-xml/composer.json

@@ -14,7 +14,9 @@
         "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
         "ext-dom": "*",
         "ext-xmlreader": "*",
-        "flow-php/etl": "^0.5.0 || 1.x-dev"
+        "ext-xmlwriter": "*",
+        "flow-php/etl": "^0.5.0 || 1.x-dev",
+        "veewee/xml": "^2.13.0"
     },
     "config": {
         "optimize-autoloader": true,