Add binary strings

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/ClassGenerator.java

@@ -29,6 +29,7 @@ public abstract class ClassGenerator {
 	protected final boolean deepCheckBeforeCreatingNewEqualInstances;
 	protected final boolean useRecordBuilders;
 	protected final boolean generateOldSerializers;
+	protected final boolean binaryStrings;
 
 	public ClassGenerator(ClassGeneratorParams params) {
 		this.generatedFilesToDelete = params.generatedFilesToDelete;
@@ -38,6 +39,7 @@ public abstract class ClassGenerator {
 		this.deepCheckBeforeCreatingNewEqualInstances = params.deepCheckBeforeCreatingNewEqualInstances;
 		this.useRecordBuilders = params.useRecordBuilders;
 		this.generateOldSerializers = params.generateOldSerializers;
+		this.binaryStrings = params.binaryStrings;
 	}
 
 	public void run() throws IOException {
@@ -89,5 +91,6 @@ public abstract class ClassGenerator {
 									   Path outPath,
 									   boolean deepCheckBeforeCreatingNewEqualInstances,
 									   boolean useRecordBuilders,
-																		 boolean generateOldSerializers) {}
+									   boolean generateOldSerializers,
+									   boolean binaryStrings) {}
 }

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/ComputedTypeArrayNative.java

@@ -4,17 +4,7 @@ import com.squareup.javapoet.ClassName;
 import com.squareup.javapoet.ParameterizedTypeName;
 import com.squareup.javapoet.TypeName;
 import it.cavallium.datagen.NativeNullable;
-import it.cavallium.datagen.nativedata.ArrayInt52Serializer;
-import it.cavallium.datagen.nativedata.ArrayStringSerializer;
-import it.cavallium.datagen.nativedata.ArraybooleanSerializer;
-import it.cavallium.datagen.nativedata.ArraybyteSerializer;
-import it.cavallium.datagen.nativedata.ArraycharSerializer;
-import it.cavallium.datagen.nativedata.ArraydoubleSerializer;
-import it.cavallium.datagen.nativedata.ArrayfloatSerializer;
-import it.cavallium.datagen.nativedata.ArrayintSerializer;
-import it.cavallium.datagen.nativedata.ArraylongSerializer;
-import it.cavallium.datagen.nativedata.ArrayshortSerializer;
-import it.cavallium.datagen.nativedata.Serializers;
+import it.cavallium.datagen.nativedata.*;
 import it.unimi.dsi.fastutil.booleans.BooleanList;
 import it.unimi.dsi.fastutil.bytes.ByteList;
 import it.unimi.dsi.fastutil.chars.CharList;
@@ -30,13 +20,15 @@ import java.util.stream.Stream;
 public final class ComputedTypeArrayNative implements ComputedTypeArray {
 
 	private final String baseType;
+	private final boolean byteStrings;
 
 	private ComputedTypeNative computedChild;
 	private final ComputedTypeSupplier computedTypeSupplier;
 
-	public ComputedTypeArrayNative(String baseType, ComputedTypeSupplier computedTypeSupplier) {
+	public ComputedTypeArrayNative(String baseType, ComputedTypeSupplier computedTypeSupplier, boolean byteStrings) {
 		this.baseType = baseType;
 		this.computedTypeSupplier = computedTypeSupplier;
+		this.byteStrings = byteStrings;
 	}
 
 	public ComputedType getBase() {
@@ -113,7 +105,7 @@ public final class ComputedTypeArrayNative implements ComputedTypeArray {
 			case "long" -> ClassName.get(ArraylongSerializer.class);
 			case "float" -> ClassName.get(ArrayfloatSerializer.class);
 			case "double" -> ClassName.get(ArraydoubleSerializer.class);
-			case "String" -> ClassName.get(ArrayStringSerializer.class);
+			case "String" -> byteStrings ? ClassName.get(ArrayBinaryStringSerializer.class) : ClassName.get(ArrayStringSerializer.class);
 			case "Int52" -> ClassName.get(ArrayInt52Serializer.class);
 			default -> throw new UnsupportedOperationException();
 		};

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/ComputedTypeNative.java

@@ -2,10 +2,8 @@ package it.cavallium.datagen.plugin;
 
 import com.squareup.javapoet.ClassName;
 import com.squareup.javapoet.TypeName;
-import it.cavallium.datagen.nativedata.Int52Serializer;
-import it.cavallium.datagen.nativedata.Serializers;
-import it.cavallium.datagen.nativedata.StringSerializer;
-import it.cavallium.datagen.nativedata.Int52;
+import it.cavallium.datagen.nativedata.*;
+
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
@@ -17,12 +15,14 @@ public final class ComputedTypeNative implements ComputedType {
 
 	private final String type;
 	private final ComputedTypeSupplier computedTypeSupplier;
+	private final boolean binaryStrings;
 	private boolean primitive;
 
-	public ComputedTypeNative(String type, ComputedTypeSupplier computedTypeSupplier) {
+	public ComputedTypeNative(String type, ComputedTypeSupplier computedTypeSupplier, boolean binaryStrings) {
 		this.type = type;
 		this.computedTypeSupplier = computedTypeSupplier;
 		this.primitive = PRIMITIVE_TYPES.contains(type);
+		this.binaryStrings = binaryStrings;
 	}
 
 	public String getName() {
@@ -32,7 +32,7 @@ public final class ComputedTypeNative implements ComputedType {
 	@Override
 	public TypeName getJTypeName(String basePackageName) {
 		return switch (type) {
-			case "String" -> ClassName.get(String.class);
+			case "String" -> binaryStrings ? ClassName.get(BinaryString.class) : ClassName.get(String.class);
 			case "boolean" -> TypeName.BOOLEAN;
 			case "short" -> TypeName.SHORT;
 			case "char" -> TypeName.CHAR;
@@ -54,7 +54,7 @@ public final class ComputedTypeNative implements ComputedType {
 	@Override
 	public TypeName getJSerializerName(String basePackageName) {
 		return switch (type) {
-			case "String" -> ClassName.get(StringSerializer.class);
+			case "String" -> binaryStrings ? ClassName.get(BinaryStringSerializer.class) : ClassName.get(StringSerializer.class);
 			case "boolean", "byte", "short", "char", "int", "long", "float", "double" ->
 					throw new UnsupportedOperationException("Type " + type
 							+ " is a native type, so it doesn't have a serializer");
@@ -107,10 +107,10 @@ public final class ComputedTypeNative implements ComputedType {
 		return computedTypeSupplier.getDependents(getName());
 	}
 
-	public static List<ComputedTypeNative> get(ComputedTypeSupplier computedTypeSupplier) {
+	public static List<ComputedTypeNative> get(ComputedTypeSupplier computedTypeSupplier, boolean binaryStrings) {
 		return Stream
 				.of("String", "boolean", "short", "char", "int", "long", "float", "double", "byte", "Int52")
-				.map(name -> new ComputedTypeNative(name, computedTypeSupplier))
+				.map(name -> new ComputedTypeNative(name, computedTypeSupplier, binaryStrings))
 				.toList();
 	}
 

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/ComputedTypeNullableNative.java

@@ -2,27 +2,8 @@ package it.cavallium.datagen.plugin;
 
 import com.squareup.javapoet.ClassName;
 import com.squareup.javapoet.TypeName;
-import it.cavallium.datagen.nativedata.NullableInt52;
-import it.cavallium.datagen.nativedata.NullableInt52Serializer;
-import it.cavallium.datagen.nativedata.NullableString;
-import it.cavallium.datagen.nativedata.NullableStringSerializer;
-import it.cavallium.datagen.nativedata.Nullableboolean;
-import it.cavallium.datagen.nativedata.NullablebooleanSerializer;
-import it.cavallium.datagen.nativedata.Nullablebyte;
-import it.cavallium.datagen.nativedata.NullablebyteSerializer;
-import it.cavallium.datagen.nativedata.Nullablechar;
-import it.cavallium.datagen.nativedata.NullablecharSerializer;
-import it.cavallium.datagen.nativedata.Nullabledouble;
-import it.cavallium.datagen.nativedata.NullabledoubleSerializer;
-import it.cavallium.datagen.nativedata.Nullablefloat;
-import it.cavallium.datagen.nativedata.NullablefloatSerializer;
-import it.cavallium.datagen.nativedata.Nullableint;
-import it.cavallium.datagen.nativedata.NullableintSerializer;
-import it.cavallium.datagen.nativedata.Nullablelong;
-import it.cavallium.datagen.nativedata.NullablelongSerializer;
-import it.cavallium.datagen.nativedata.Nullableshort;
-import it.cavallium.datagen.nativedata.NullableshortSerializer;
-import it.cavallium.datagen.nativedata.Serializers;
+import it.cavallium.datagen.nativedata.*;
+
 import java.util.Objects;
 import java.util.stream.Stream;
 
@@ -30,14 +11,16 @@ public final class ComputedTypeNullableNative implements ComputedTypeNullable {
 
 	private final String baseType;
 	private final ComputedVersion latestVersion;
+	private final boolean binaryStrings;
 
 	private ComputedTypeNative computedChild;
 	private final ComputedTypeSupplier computedTypeSupplier;
 
-	public ComputedTypeNullableNative(String baseType, ComputedVersion latestVersion, ComputedTypeSupplier computedTypeSupplier) {
+	public ComputedTypeNullableNative(String baseType, ComputedVersion latestVersion, ComputedTypeSupplier computedTypeSupplier, boolean binaryStrings) {
 		this.baseType = baseType;
 		this.latestVersion = latestVersion;
 		this.computedTypeSupplier = computedTypeSupplier;
+		this.binaryStrings = binaryStrings;
 	}
 
 	public ComputedTypeNative getBase() {
@@ -93,7 +76,7 @@ public final class ComputedTypeNullableNative implements ComputedTypeNullable {
 			case "long" -> ClassName.get(Nullablelong.class);
 			case "float" -> ClassName.get(Nullablefloat.class);
 			case "double" -> ClassName.get(Nullabledouble.class);
-			case "String" -> ClassName.get(NullableString.class);
+			case "String" -> binaryStrings ? ClassName.get(NullableBinaryString.class) : ClassName.get(NullableString.class);
 			case "Int52" -> ClassName.get(NullableInt52.class);
 			default -> ClassName.get(latestVersion.getDataNullablesPackage(basePackageName), "Nullable" + baseType);
 		};
@@ -115,7 +98,7 @@ public final class ComputedTypeNullableNative implements ComputedTypeNullable {
 			case "long" -> ClassName.get(NullablelongSerializer.class);
 			case "float" -> ClassName.get(NullablefloatSerializer.class);
 			case "double" -> ClassName.get(NullabledoubleSerializer.class);
-			case "String" -> ClassName.get(NullableStringSerializer.class);
+			case "String" -> binaryStrings ? ClassName.get(NullableBinaryStringSerializer.class) : ClassName.get(NullableStringSerializer.class);
 			case "Int52" -> ClassName.get(NullableInt52Serializer.class);
 			default -> throw new UnsupportedOperationException();
 		};

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/DataModel.java

@@ -63,7 +63,8 @@ public class DataModel {
 					 Map<String, ClassConfiguration> baseTypesData,
 					 Map<String, Set<String>> superTypesData,
 					 Map<String, CustomTypesConfiguration> customTypesData,
-			Map<String, VersionConfiguration> rawVersions) {
+					 Map<String, VersionConfiguration> rawVersions,
+					 boolean binaryStrings) {
 
 		this.hash = hash;
 
@@ -363,7 +364,7 @@ public class DataModel {
 						nullableRawTypes.stream()
 								.filter(NATIVE_TYPES::contains)
 								.map(baseType ->
-										new ComputedTypeNullableNative(baseType, computedVersions.get(latestVersion), computedTypeSupplier))
+										new ComputedTypeNullableNative(baseType, computedVersions.get(latestVersion), computedTypeSupplier, binaryStrings))
 								.forEach(versionBaseTypes::add);
 					}
 					// Compute array types
@@ -393,7 +394,7 @@ public class DataModel {
 								.forEach(versionBaseTypes::add);
 					}
 					// Compute native types
-					versionBaseTypes.addAll(ComputedTypeNative.get(computedTypeSupplier));
+					versionBaseTypes.addAll(ComputedTypeNative.get(computedTypeSupplier, binaryStrings));
 
 					var allLatestTypes = versionBaseTypes.stream().distinct().collect(Collectors.toMap(ComputedType::getName, identity()));
 

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/SourcesGenerator.java

@@ -69,14 +69,13 @@ public class SourcesGenerator {
 
 	private static final Logger logger = LoggerFactory.getLogger(SourcesGenerator.class);
 	private static final boolean OVERRIDE_ALL_NULLABLE_METHODS = false;
-	private static final String SERIAL_VERSION = "5";
+	private static final String SERIAL_VERSION = "6";
 
-	private final DataModel dataModel;
+	private final SourcesGeneratorConfiguration configuration;
 
 	private SourcesGenerator(InputStream yamlDataStream) {
 		Yaml yaml = new Yaml();
-		var configuration = yaml.loadAs(yamlDataStream, SourcesGeneratorConfiguration.class);
-		this.dataModel = configuration.buildDataModel();
+		this.configuration = yaml.loadAs(yamlDataStream, SourcesGeneratorConfiguration.class);
 	}
 
 	public static SourcesGenerator load(InputStream yamlData) {
@@ -101,8 +100,15 @@ public class SourcesGenerator {
 	 * @param useRecordBuilders if true, the data will have @RecordBuilder annotation
 	 * @param force           force overwrite
 	 * @param deepCheckBeforeCreatingNewEqualInstances if true, use equals, if false, use ==
+	 * @param binaryStrings   use binary strings
 	 */
-	public void generateSources(String basePackageName, Path outPath, boolean useRecordBuilders, boolean force, boolean deepCheckBeforeCreatingNewEqualInstances, boolean generateOldSerializers) throws IOException {
+	public void generateSources(String basePackageName,
+								Path outPath,
+								boolean useRecordBuilders,
+								boolean force,
+								boolean deepCheckBeforeCreatingNewEqualInstances,
+								boolean generateOldSerializers,
+								boolean binaryStrings) throws IOException {
 		Path basePackageNamePath;
 		{
 			Path basePackageNamePathPartial = outPath;
@@ -112,22 +118,25 @@ public class SourcesGenerator {
 			basePackageNamePath = basePackageNamePathPartial;
 		}
 		var hashPath = basePackageNamePath.resolve(".hash");
+		var dataModel = configuration.buildDataModel(binaryStrings);
 		var curHash = dataModel.computeHash();
 		if (Files.isRegularFile(hashPath) && Files.isReadable(hashPath)) {
 			var lines = Files.readAllLines(hashPath, StandardCharsets.UTF_8);
-			if (lines.size() >= 6) {
+			if (lines.size() >= 7) {
 				var prevBasePackageName = lines.get(0);
 				var prevRecordBuilders = lines.get(1);
 				var prevHash = lines.get(2);
 				var prevDeepCheckBeforeCreatingNewEqualInstances = lines.get(3);
 				var prevGenerateOldSerializers = lines.get(4);
 				var prevSerialVersion = lines.get(5);
+				var prevBinaryStrings = lines.get(6);
 
 				if (!force
 						&& prevBasePackageName.equals(basePackageName)
 						&& (prevRecordBuilders.equalsIgnoreCase("true") == useRecordBuilders)
 						&& (prevDeepCheckBeforeCreatingNewEqualInstances.equalsIgnoreCase("true") == deepCheckBeforeCreatingNewEqualInstances)
 						&& (prevGenerateOldSerializers.equalsIgnoreCase("true") == generateOldSerializers)
+						&& (prevBinaryStrings.equalsIgnoreCase("true") == binaryStrings)
 						&& (prevSerialVersion.equals(SERIAL_VERSION))
 						&& prevHash.equals(Integer.toString(curHash))) {
 					logger.info("Skipped sources generation because it didn't change");
@@ -154,7 +163,8 @@ public class SourcesGenerator {
 					.collect(Collectors.toCollection(HashSet::new));
 		}
 
-		var genParams = new ClassGeneratorParams(generatedFilesToDelete, dataModel, basePackageName, outPath, deepCheckBeforeCreatingNewEqualInstances, useRecordBuilders, generateOldSerializers);
+		var genParams = new ClassGeneratorParams(generatedFilesToDelete, dataModel, basePackageName, outPath,
+				deepCheckBeforeCreatingNewEqualInstances, useRecordBuilders, generateOldSerializers, binaryStrings);
 
 		// Create the Versions class
 		new GenVersions(genParams).run();
@@ -202,7 +212,13 @@ public class SourcesGenerator {
 		new GenUpgraderSuperX(genParams).run();
 
 		// Update the hash at the end
-		var newHashRaw = basePackageName + '\n' + useRecordBuilders + '\n' + deepCheckBeforeCreatingNewEqualInstances + '\n' + curHash + '\n';
+		var newHashRaw = basePackageName + '\n'
+				+ useRecordBuilders + '\n'
+				+ deepCheckBeforeCreatingNewEqualInstances + '\n'
+				+ generateOldSerializers + '\n'
+				+ binaryStrings + '\n'
+				+ SERIAL_VERSION + '\n'
+				+ curHash + '\n';
 		String oldHashRaw;
 		if (Files.exists(hashPath)) {
 			oldHashRaw = Files.readString(hashPath, StandardCharsets.UTF_8);

datagen-plugin/src/main/java/it/cavallium/datagen/plugin/SourcesGeneratorConfiguration.java

@@ -37,14 +37,15 @@ public class SourcesGeneratorConfiguration {
 		return hash;
 	}
 
-	public DataModel buildDataModel() {
+	public DataModel buildDataModel(boolean binaryStrings) {
 		return new DataModel(hashCode(),
 				currentVersion,
 				Objects.requireNonNullElse(interfacesData, Map.of()),
 				Objects.requireNonNullElse(baseTypesData, Map.of()),
 				Objects.requireNonNullElse(superTypesData, Map.of()),
 				Objects.requireNonNullElse(customTypesData, Map.of()),
-				Objects.requireNonNullElse(versions, Map.of())
+				Objects.requireNonNullElse(versions, Map.of()),
+				binaryStrings
 		);
 	}
 }

datagen/src/main/java/it/cavallium/datagen/nativedata/ArrayBinaryStringSerializer.java

@@ -0,0 +1,33 @@
+package it.cavallium.datagen.nativedata;
+
+import it.cavallium.datagen.DataSerializer;
+import it.cavallium.stream.SafeDataInput;
+import it.cavallium.stream.SafeDataOutput;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+public class ArrayBinaryStringSerializer implements DataSerializer<List<BinaryString>> {
+
+	@Override
+	public void serialize(SafeDataOutput dataOutput, @NotNull List<BinaryString> data) {
+		dataOutput.writeInt(data.size());
+		for (BinaryString item : data) {
+			dataOutput.writeShort(item.sizeBytes());
+			dataOutput.write(item.data());
+		}
+	}
+
+	@NotNull
+	@Override
+	public List<BinaryString> deserialize(SafeDataInput dataInput) {
+		var data = new BinaryString[dataInput.readInt()];
+		for (int i = 0; i < data.length; i++) {
+			var len = dataInput.readUnsignedShort();
+			byte[] stringData = new byte[len];
+			dataInput.readFully(stringData);
+			data[i] = new BinaryString(stringData);
+		}
+		return List.of(data);
+	}
+}

datagen/src/main/java/it/cavallium/datagen/nativedata/BinaryString.java

@@ -0,0 +1,29 @@
+package it.cavallium.datagen.nativedata;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Objects;
+
+public record BinaryString(byte[] data) {
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        BinaryString that = (BinaryString) o;
+        return Objects.deepEquals(data, that.data);
+    }
+
+    @Override
+    public int hashCode() {
+        return Arrays.hashCode(data);
+    }
+
+    @Override
+    public String toString() {
+        return new String(data, StandardCharsets.UTF_8);
+    }
+
+    public int sizeBytes() {
+        return data.length;
+    }
+}

datagen/src/main/java/it/cavallium/datagen/nativedata/BinaryStringSerializer.java

@@ -0,0 +1,26 @@
+package it.cavallium.datagen.nativedata;
+
+import it.cavallium.datagen.DataSerializer;
+import it.cavallium.stream.SafeDataInput;
+import it.cavallium.stream.SafeDataOutput;
+import org.jetbrains.annotations.NotNull;
+
+public class BinaryStringSerializer implements DataSerializer<BinaryString> {
+
+	public static final BinaryStringSerializer INSTANCE = new BinaryStringSerializer();
+
+	@Override
+	public void serialize(SafeDataOutput dataOutput, @NotNull BinaryString data) {
+		dataOutput.writeInt(data.sizeBytes());
+		dataOutput.write(data.data());
+	}
+
+	@NotNull
+	@Override
+	public BinaryString deserialize(SafeDataInput dataInput) {
+		var size = dataInput.readInt();
+		byte[] bytes = new byte[size];
+		dataInput.readFully(bytes);
+		return new BinaryString(bytes);
+	}
+}

datagen/src/main/java/it/cavallium/datagen/nativedata/NullableBinaryString.java

@@ -0,0 +1,160 @@
+package it.cavallium.datagen.nativedata;
+
+import it.cavallium.datagen.NativeNullable;
+import it.cavallium.datagen.TypedNullable;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.io.Serial;
+import java.io.Serializable;
+import java.nio.charset.StandardCharsets;
+import java.util.Objects;
+
+public class NullableBinaryString implements Serializable, INullable, TypedNullable<BinaryString> {
+
+	@Serial
+	private static final long serialVersionUID = 1L;
+	private static final NullableBinaryString NULL = new NullableBinaryString(null);
+
+	private final BinaryString value;
+
+	public NullableBinaryString(BinaryString value) {
+		this.value = value;
+	}
+
+	@SuppressWarnings("ConstantConditions")
+	public static NullableBinaryString of(@NotNull BinaryString value) {
+		if (value == null) {
+			throw new NullPointerException();
+		} else {
+			return new NullableBinaryString(value);
+		}
+	}
+
+	public static NullableBinaryString ofNullable(@Nullable BinaryString value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new NullableBinaryString(value);
+		}
+	}
+
+	public static NullableBinaryString empty() {
+		return NULL;
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return value == null;
+	}
+
+	@Override
+	public boolean isPresent() {
+		return value != null;
+	}
+
+	public boolean isContentful() {
+		return value != null && !isBlank();
+	}
+
+	public boolean isBlank() {
+		return value == null || value.sizeBytes() == 0;
+	}
+
+	@Override
+	@NotNull
+	public BinaryString get() {
+		if (value == null) {
+			throw new NullPointerException();
+		} else {
+			return value;
+		}
+	}
+
+	@Override
+	public @NotNull NullableBinaryString or(@NotNull NativeNullable<? extends BinaryString> fallback) {
+		if (value == null) {
+			if (fallback.getClass() == NullableBinaryString.class) {
+				return (NullableBinaryString) fallback;
+			} else {
+				return ofNullable(fallback.getNullable());
+			}
+		} else {
+			return this;
+		}
+	}
+
+	@NotNull
+	public NullableBinaryString or(NullableBinaryString fallback) {
+		if (value == null) {
+			return fallback;
+		} else {
+			return this;
+		}
+	}
+
+	public @NotNull NullableBinaryString orIfBlank(@NotNull NativeNullable<? extends BinaryString> fallback) {
+		if (isBlank()) {
+			if (fallback.getClass() == NullableBinaryString.class) {
+				return (NullableBinaryString) fallback;
+			} else {
+				return ofNullable(fallback.getNullable());
+			}
+		} else {
+			return this;
+		}
+	}
+
+	@NotNull
+	public NullableBinaryString orIfBlank(NullableBinaryString fallback) {
+		if (isBlank()) {
+			return fallback;
+		} else {
+			return this;
+		}
+	}
+
+	@Nullable
+	public BinaryString getNullable() {
+		return value;
+	}
+
+	@Override
+	@Nullable
+	public BinaryString getNullable(BinaryString defaultValue) {
+		return value == null ? defaultValue : value;
+	}
+
+	@NotNull
+	@Override
+	public NullableBinaryString clone() {
+		if (value != null) {
+			return NullableBinaryString.of(value);
+		} else {
+			return NullableBinaryString.empty();
+		}
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) {
+			return true;
+		}
+		if (o == null || getClass() != o.getClass()) {
+			return false;
+		}
+		var that = (NullableBinaryString) o;
+		return Objects.equals(value, that.value);
+	}
+
+	@Override
+	public int hashCode() {
+		return value == null ? 0 : value.hashCode();
+	}
+
+	@Override
+	public String toString() {
+		if (value == null) return "null";
+		return new String(value.data(), StandardCharsets.UTF_8);
+	}
+}

datagen/src/main/java/it/cavallium/datagen/nativedata/NullableBinaryStringSerializer.java

@@ -0,0 +1,39 @@
+package it.cavallium.datagen.nativedata;
+
+import it.cavallium.datagen.DataSerializer;
+import it.cavallium.stream.SafeDataInput;
+import it.cavallium.stream.SafeDataOutput;
+import org.jetbrains.annotations.NotNull;
+
+import java.nio.charset.StandardCharsets;
+
+public class NullableBinaryStringSerializer implements DataSerializer<NullableBinaryString> {
+
+	public static final NullableBinaryStringSerializer INSTANCE = new NullableBinaryStringSerializer();
+
+	@Override
+	public void serialize(SafeDataOutput dataOutput, @NotNull NullableBinaryString data) {
+		if (data.isEmpty()) {
+			dataOutput.writeBoolean(false);
+		} else {
+			dataOutput.writeBoolean(true);
+			BinaryString dataContent = data.get();
+			dataOutput.writeShort(dataContent.sizeBytes());
+			dataOutput.write(dataContent.data());
+		}
+	}
+
+	@NotNull
+	@Override
+	public NullableBinaryString deserialize(SafeDataInput dataInput) {
+		var isPresent = dataInput.readBoolean();
+		if (!isPresent) {
+			return NullableBinaryString.empty();
+		} else {
+			var size = dataInput.readUnsignedShort();
+			var data = new byte[size];
+			dataInput.readFully(data);
+			return NullableBinaryString.of(new BinaryString(data));
+		}
+	}
+}