Updated parquet thrift definitions

composer.json

@@ -262,6 +262,12 @@
         "build:docs": [
             "bin/docs.php dsl:dump web/landing/resources/dsl.json"
         ],
+        "build:parquet:thrift": [
+            "grep -q 'namespace php Flow.Parquet.Thrift' src/lib/parquet/src/Flow/Parquet/Resources/Thrift/parquet.thrift || { echo \"Flow php namespace not found in thrift definition!\"; exit 1; }\n",
+            "rm src/lib/parquet/src/Flow/Parquet/Thrift/*.php",
+            "thrift --gen php --out src/lib/parquet/src src/lib/parquet/src/Flow/Parquet/Resources/Thrift/parquet.thrift",
+            "@cs:php:fix"
+        ],
         "pre-autoload-dump": [
             "Google\\Task\\Composer::cleanup"
         ],

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

@@ -117,9 +117,9 @@ public function withSchema(Schema $schema) : self
     private function inferSchema(Rows $rows) : void
     {
         if ($this->inferredSchema === null) {
-            $this->inferredSchema = $rows->schema();
+            $this->inferredSchema = $rows->schema()->makeNullable();
         } else {
-            $this->inferredSchema = $this->inferredSchema->merge($rows->schema());
+            $this->inferredSchema = $this->inferredSchema->merge($rows->schema())->makeNullable();
         }
     }
 

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

@@ -26,6 +26,7 @@
 use Flow\ETL\PHP\Type\Logical\{DateTimeType, JsonType, ListType, MapType, StructureType, UuidType, XMLElementType, XMLType};
 use Flow\ETL\PHP\Type\Native\{ObjectType, ScalarType};
 use Flow\ETL\PHP\Type\Type;
+use Flow\ETL\PHP\Value\Uuid;
 use Flow\ETL\Row\{Schema};
 use Flow\Parquet\ParquetFile\Schema as ParquetSchema;
 use Flow\Parquet\ParquetFile\Schema\{Column, FlatColumn, ListElement, NestedColumn};
@@ -65,42 +66,43 @@ private function flowListToParquetList(ListType $type) : ListElement
             case ScalarType::class:
                 switch ($element->type()) {
                     case ScalarType::FLOAT:
-                        return ListElement::float();
+                        return ListElement::float(!$type->nullable());
                     case ScalarType::INTEGER:
-                        return ListElement::int64();
+                        return ListElement::int64(!$type->nullable());
                     case ScalarType::STRING:
-                        return ListElement::string();
+                        return ListElement::string(!$type->nullable());
                     case ScalarType::BOOLEAN:
-                        return ListElement::boolean();
+                        return ListElement::boolean(!$type->nullable());
                 }
 
                 break;
             case DateTimeType::class:
-                return ListElement::datetime();
+                return ListElement::datetime(!$type->nullable());
             case UuidType::class:
-                return ListElement::uuid();
+                return ListElement::uuid(!$type->nullable());
             case JsonType::class:
-                return ListElement::json();
+                return ListElement::json(!$type->nullable());
             case XMLType::class:
             case XMLElementType::class:
-                return ListElement::string();
+                return ListElement::string(!$type->nullable());
             case ObjectType::class:
                 $class = $element->class;
 
                 if ($class === \DateInterval::class) {
-                    return ListElement::time();
+                    return ListElement::time(!$type->nullable());
                 }
 
                 throw new \Flow\Parquet\Exception\RuntimeException($class . ' can\'t be converted to any parquet columns.');
             case ListType::class:
-                return ListElement::list($this->flowListToParquetList($element));
+                return ListElement::list($this->flowListToParquetList($element), !$type->nullable());
             case MapType::class:
                 return ListElement::map(
                     $this->flowMapKeyToParquetMapKey($element->key()),
-                    $this->flowMapValueToParquetMapValue($element->value())
+                    $this->flowMapValueToParquetMapValue($element->value()),
+                    !$type->nullable()
                 );
             case StructureType::class:
-                return ListElement::structure($this->flowStructureToParquetStructureElements($element));
+                return ListElement::structure($this->flowStructureToParquetStructureElements($element), !$type->nullable());
         }
 
         throw new RuntimeException($element::class . ' is not supported.');
@@ -141,50 +143,51 @@ private function flowMapValueToParquetMapValue(MapValue $mapValue) : ParquetSche
             case ScalarType::class:
                 switch ($mapValueType->type()) {
                     case ScalarType::FLOAT:
-                        return ParquetSchema\MapValue::float();
+                        return ParquetSchema\MapValue::float(!$mapValueType->nullable());
                     case ScalarType::INTEGER:
-                        return ParquetSchema\MapValue::int64();
+                        return ParquetSchema\MapValue::int64(!$mapValueType->nullable());
                     case ScalarType::STRING:
-                        return ParquetSchema\MapValue::string();
+                        return ParquetSchema\MapValue::string(!$mapValueType->nullable());
                     case ScalarType::BOOLEAN:
-                        return ParquetSchema\MapValue::boolean();
+                        return ParquetSchema\MapValue::boolean(!$mapValueType->nullable());
                 }
 
                 break;
             case UuidType::class:
-                return ParquetSchema\MapValue::uuid();
+                return ParquetSchema\MapValue::uuid(!$mapValueType->nullable());
             case DateTimeType::class:
-                return ParquetSchema\MapValue::datetime();
+                return ParquetSchema\MapValue::datetime(!$mapValueType->nullable());
             case JsonType::class:
-                return ParquetSchema\MapValue::json();
+                return ParquetSchema\MapValue::json(!$mapValueType->nullable());
             case XMLType::class:
             case XMLElementType::class:
-                return ParquetSchema\MapValue::string();
+                return ParquetSchema\MapValue::string(!$mapValueType->nullable());
             case ObjectType::class:
                 $class = $mapValueType->class;
 
                 if (\is_a($class, \DateTimeInterface::class, true)) {
-                    return ParquetSchema\MapValue::datetime();
+                    return ParquetSchema\MapValue::datetime(!$mapValueType->nullable());
                 }
 
-                if ($class === \Flow\ETL\PHP\Value\Uuid::class) {
-                    return ParquetSchema\MapValue::string();
+                if ($class === Uuid::class) {
+                    return ParquetSchema\MapValue::string(!$mapValueType->nullable());
                 }
 
                 if ($class === \DateInterval::class) {
-                    return ParquetSchema\MapValue::time();
+                    return ParquetSchema\MapValue::time(!$mapValueType->nullable());
                 }
 
                 throw new \Flow\Parquet\Exception\RuntimeException($class . ' can\'t be converted to any parquet columns.');
             case ListType::class:
-                return ParquetSchema\MapValue::list($this->flowListToParquetList($mapValueType));
+                return ParquetSchema\MapValue::list($this->flowListToParquetList($mapValueType), !$mapValueType->nullable());
             case MapType::class:
                 return ParquetSchema\MapValue::map(
                     $this->flowMapKeyToParquetMapKey($mapValueType->key()),
-                    $this->flowMapValueToParquetMapValue($mapValueType->value())
+                    $this->flowMapValueToParquetMapValue($mapValueType->value()),
+                    !$mapValueType->nullable()
                 );
             case StructureType::class:
-                return ParquetSchema\MapValue::structure(...$this->flowStructureToParquetStructureElements($mapValueType));
+                return ParquetSchema\MapValue::structure($this->flowStructureToParquetStructureElements($mapValueType), !$mapValueType->nullable());
         }
 
         throw new RuntimeException($mapValueType::class . ' is not supported.');
@@ -195,7 +198,7 @@ private function flowObjectToParquetFlat(ObjectType $type, string $name) : FlatC
         $class = $type->class;
 
         if ($class === \DateInterval::class) {
-            return FlatColumn::time($name);
+            return FlatColumn::time($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
         }
 
         throw new RuntimeException($type->toString() . ' can\'t be converted to any parquet columns.');
@@ -205,13 +208,13 @@ private function flowScalarToParquetFlat(ScalarType $type, string $name) : FlatC
     {
         switch ($type->type()) {
             case ScalarType::FLOAT:
-                return FlatColumn::float($name);
+                return FlatColumn::float($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case ScalarType::INTEGER:
-                return FlatColumn::int64($name);
+                return FlatColumn::int64($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case ScalarType::STRING:
-                return FlatColumn::string($name);
+                return FlatColumn::string($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case ScalarType::BOOLEAN:
-                return FlatColumn::boolean($name);
+                return FlatColumn::boolean($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
 
             default:
                 throw new RuntimeException($type->type() . ' is not supported.');
@@ -235,26 +238,27 @@ private function flowTypeToParquetType(string $name, Type $type) : Column
             case ScalarType::class:
                 return $this->flowScalarToParquetFlat($type, $name);
             case DateTimeType::class:
-                return FlatColumn::datetime($name);
+                return FlatColumn::datetime($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case UuidType::class:
-                return FlatColumn::uuid($name);
+                return FlatColumn::uuid($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case JsonType::class:
-                return FlatColumn::json($name);
+                return FlatColumn::json($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case XMLType::class:
             case XMLElementType::class:
-                return FlatColumn::string($name);
+                return FlatColumn::string($name, $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case ObjectType::class:
                 return $this->flowObjectToParquetFlat($type, $name);
             case ListType::class:
-                return NestedColumn::list($name, $this->flowListToParquetList($type));
+                return NestedColumn::list($name, $this->flowListToParquetList($type), $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
             case MapType::class:
                 return NestedColumn::map(
                     $name,
                     $this->flowMapKeyToParquetMapKey($type->key()),
-                    $this->flowMapValueToParquetMapValue($type->value())
+                    $this->flowMapValueToParquetMapValue($type->value()),
+                    $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED
                 );
             case StructureType::class:
-                return NestedColumn::struct($name, $this->flowStructureToParquetStructureElements($type));
+                return NestedColumn::struct($name, $this->flowStructureToParquetStructureElements($type), $type->nullable() ? ParquetSchema\Repetition::OPTIONAL : ParquetSchema\Repetition::REQUIRED);
         }
 
         throw new RuntimeException($type::class . ' is not supported.');

src/adapter/etl-adapter-parquet/tests/Flow/ETL/Adapter/Parquet/Tests/Unit/FlowToParquetSchemaTest.php

@@ -32,22 +32,23 @@ public function test_convert_etl_entries_to_parquet_fields() : void
     {
         self::assertEquals(
             ParquetSchema::with(
-                FlatColumn::int64('integer'),
-                FlatColumn::boolean('boolean'),
-                FlatColumn::string('string'),
-                FlatColumn::float('float'),
-                FlatColumn::dateTime('datetime'),
-                FlatColumn::json('json'),
-                NestedColumn::list('list', ParquetSchema\ListElement::string()),
+                FlatColumn::int64('integer', ParquetSchema\Repetition::REQUIRED),
+                FlatColumn::boolean('boolean', ParquetSchema\Repetition::REQUIRED),
+                FlatColumn::string('string', ParquetSchema\Repetition::REQUIRED),
+                FlatColumn::float('float', ParquetSchema\Repetition::REQUIRED),
+                FlatColumn::dateTime('datetime', ParquetSchema\Repetition::REQUIRED),
+                FlatColumn::json('json', ParquetSchema\Repetition::REQUIRED),
+                NestedColumn::list('list', ParquetSchema\ListElement::string(true), ParquetSchema\Repetition::REQUIRED),
                 NestedColumn::list('list_of_structs', ParquetSchema\ListElement::structure(
                     [
-                        FlatColumn::int64('integer'),
-                        FlatColumn::boolean('boolean'),
-                    ]
-                )),
-                NestedColumn::struct('structure', [FlatColumn::string('a')]),
-                NestedColumn::map('map', ParquetSchema\MapKey::string(), ParquetSchema\MapValue::int64()),
-                FlatColumn::time('time')
+                        FlatColumn::int64('integer', ParquetSchema\Repetition::REQUIRED),
+                        FlatColumn::boolean('boolean', ParquetSchema\Repetition::REQUIRED),
+                    ],
+                    true
+                ), ParquetSchema\Repetition::REQUIRED),
+                NestedColumn::struct('structure', [FlatColumn::string('a', ParquetSchema\Repetition::REQUIRED)], ParquetSchema\Repetition::REQUIRED),
+                NestedColumn::map('map', ParquetSchema\MapKey::string(), ParquetSchema\MapValue::int64(true), ParquetSchema\Repetition::REQUIRED),
+                FlatColumn::time('time', ParquetSchema\Repetition::REQUIRED)
             ),
             (new SchemaConverter())->toParquet(new Schema(
                 Schema\Definition::integer('integer'),
@@ -65,7 +66,7 @@ public function test_convert_etl_entries_to_parquet_fields() : void
                 ))),
                 Schema\Definition::structure('structure', new StructureType([new StructureElement('a', type_string())])),
                 Schema\Definition::map('map', new MapType(MapKey::string(), MapValue::integer())),
-                Schema\Definition::object('time', type_object(\DateInterval::class, false))
+                Schema\Definition::object('time', type_object(\DateInterval::class))
             ))
         );
     }
@@ -76,7 +77,7 @@ public function test_convert_object_entry_to_parquet_array() : void
         $this->expectExceptionMessage("object<stdClass> can't be converted to any parquet columns.");
 
         (new SchemaConverter())->toParquet(new Schema(
-            Schema\Definition::object('object', type_object(\stdClass::class, false))
+            Schema\Definition::object('object', type_object(\stdClass::class))
         ));
     }
 }

src/core/etl/tests/Flow/ETL/Tests/Unit/PHP/Type/Logical/StructureTypeTest.php

@@ -107,7 +107,7 @@ public function test_merging_nested_structures() : void
                         struct_element('id', type_string()),
                         struct_element('name', type_float()),
                     ],
-                    true
+                    nullable: true
                 )),
             ]),
             struct_type([

src/lib/parquet-viewer/src/Flow/ParquetViewer/Command/ReadMetadataCommand.php

@@ -78,13 +78,13 @@ protected function execute(InputInterface $input, OutputInterface $output) : int
         if ($displayColumns) {
             $columnsTable = $style->createTable();
             $columnsTable->setStyle('box');
-            $columnsTable->setHeaderTitle('Flat Columns');
+            $columnsTable->setHeaderTitle('Columns');
             $columnsTable->setHeaders(['path', 'type', 'logical type', 'repetition', 'max repetition', 'max definition']);
 
             foreach ($parquetFile->schema()->columnsFlat() as $column) {
                 $columnsTable->addRow([
                     $column->flatPath(),
-                    $column->type() ? $column->type()->name : 'group',
+                    ($column->type() ? $column->type()->name : 'group') . ($column->typeLength() ? '(' . $column->typeLength() . ')' : ''),
                     $column->logicalType() ? $column->logicalType()->name() : '-',
                     $column->repetition()?->name ?? 'N/A',
                     $column->maxRepetitionsLevel(),

src/lib/parquet/src/Flow/Parquet/ParquetFile.php

@@ -54,7 +54,11 @@ public function metadata() : Metadata
         $metadata = $this->stream->read($metadataLength, -($metadataLength + 8));
 
         $thriftMetadata = new FileMetaData();
-        $thriftMetadata->read(new TCompactProtocol(new TMemoryBuffer($metadata)));
+        $thriftMetadata->read(
+            new TCompactProtocol(
+                new TMemoryBuffer($metadata)
+            )
+        );
 
         $this->metadata = Metadata::fromThrift($thriftMetadata, $this->options);
 

src/lib/parquet/src/Flow/Parquet/ParquetFile/Data/PlainValueUnpacker.php

@@ -42,6 +42,7 @@ public function unpack(FlatColumn $column, int $total) : array
             PhysicalType::FIXED_LEN_BYTE_ARRAY => match ($column->logicalType()?->name()) {
                 /** @phpstan-ignore-next-line */
                 LogicalType::DECIMAL => $this->reader->readDecimals($total, $column->typeLength(), $column->logicalType()?->decimalData()?->precision(), $column->logicalType()?->decimalData()?->scale()),
+                LogicalType::UUID => $this->reader->readStrings($total),
                 default => throw new RuntimeException('Unsupported logical type ' . ($column->logicalType()?->name() ?: 'null') . ' for FIXED_LEN_BYTE_ARRAY'),
             },
             PhysicalType::BOOLEAN => $this->reader->readBooleans($total),

src/lib/parquet/src/Flow/Parquet/ParquetFile/Data/PlainValuesPacker.php

@@ -70,6 +70,10 @@ public function packValues(FlatColumn $column, array $values) : void
                 break;
             case PhysicalType::FIXED_LEN_BYTE_ARRAY:
                 switch ($column->logicalType()?->name()) {
+                    case LogicalType::UUID:
+                        $this->writer->writeStrings($parquetValues);
+
+                        break;
                     case LogicalType::DECIMAL:
                         /**
                          * @phpstan-ignore-next-line
@@ -87,7 +91,6 @@ public function packValues(FlatColumn $column, array $values) : void
                 break;
             case PhysicalType::BYTE_ARRAY:
                 switch ($column->logicalType()?->name()) {
-                    case LogicalType::UUID:
                     case LogicalType::JSON:
                     case LogicalType::STRING:
                         $this->writer->writeStrings($parquetValues);

src/lib/parquet/src/Flow/Parquet/ParquetFile/Schema/FlatColumn.php

@@ -137,9 +137,9 @@ public static function time(string $name, Repetition $repetition = Repetition::O
         return new self($name, PhysicalType::INT64, ConvertedType::TIME_MICROS, LogicalType::time(), $repetition);
     }
 
-    public static function uuid(string $string, Repetition $repetition = Repetition::OPTIONAL) : self
+    public static function uuid(string $uuid, Repetition $repetition = Repetition::OPTIONAL) : self
     {
-        return new self($string, PhysicalType::BYTE_ARRAY, null, LogicalType::uuid(), $repetition);
+        return new self($uuid, PhysicalType::FIXED_LEN_BYTE_ARRAY, null, LogicalType::uuid(), $repetition, typeLength: 16);
     }
 
     public function __debugInfo() : ?array