Update runtime

src/main/java/it/cavallium/data/generator/nativedata/Int52.java

@@ -19,7 +19,10 @@ public class Int52 extends Number implements Comparable<Int52> {
 	 */
 	public static final int BYTES = 7;
 
-	public static final Int52 ZERO = new Int52(0);
+	public static final Int52 ZERO = new Int52(0L);
+	public static final Int52 ONE = new Int52(1L);
+	public static final Int52 TWO = new Int52(2L);
+	public static final Int52 TEN = new Int52(10L);
 
 	private final long value;
 
@@ -28,13 +31,21 @@ public class Int52 extends Number implements Comparable<Int52> {
 	}
 
 	public static Int52 fromLong(long value) {
-		if (value < 0) {
+		if (value == 0) {
+			return ZERO;
+		} else if (value == 1) {
+			return ONE;
+		} else if (value == 2) {
+			return TWO;
+		} else if (value == 10) {
+			return TEN;
+		} else if (value <= 0) {
 			throw new IllegalArgumentException("Only positive values are supported");
-		}
-		if (value > 0x0F_FF_FF_FF_FF_FF_FFL) {
+		} else if (value > 0x0F_FF_FF_FF_FF_FF_FFL) {
 			throw new IllegalArgumentException("Only values below or equal to " + 0xFFFFFFFFFFFFFL + " are supported");
+		} else {
+			return new Int52(value);
 		}
-		return new Int52(value);
 	}
 
 	long getValue() {

src/main/java/it/cavallium/data/generator/nativedata/NullableInt52.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class NullableInt52 implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final NullableInt52 NULL = new NullableInt52(null);
 
 	private final Int52 value;
 
@@ -20,11 +23,15 @@ public class NullableInt52 implements Serializable, IGenericNullable {
 	}
 
 	public static NullableInt52 ofNullable(@Nullable Int52 value) {
-		return new NullableInt52(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new NullableInt52(value);
+		}
 	}
 
-	public static <T> NullableInt52 empty() {
-		return new NullableInt52(null);
+	public static NullableInt52 empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/NullableString.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class NullableString implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final NullableString NULL = new NullableString(null);
 
 	private final String value;
 
@@ -15,6 +18,7 @@ public class NullableString implements Serializable, IGenericNullable {
 		this.value = value;
 	}
 
+	@SuppressWarnings("ConstantConditions")
 	public static NullableString of(@NotNull String value) {
 		if (value == null) {
 			throw new NullPointerException();
@@ -24,18 +28,22 @@ public class NullableString implements Serializable, IGenericNullable {
 	}
 
 	public static NullableString ofNullable(@Nullable String value) {
-		return new NullableString(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new NullableString(value);
+		}
 	}
 
 	public static NullableString ofNullableBlank(@Nullable String value) {
 		if (value == null || value.isBlank()) {
-			return empty();
+			return NULL;
 		}
 		return new NullableString(value);
 	}
 
-	public static <T> NullableString empty() {
-		return new NullableString(null);
+	public static NullableString empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullableboolean.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullableboolean implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullableboolean NULL = new Nullableboolean(null);
 
 	private final Boolean value;
 
@@ -20,11 +23,15 @@ public class Nullableboolean implements Serializable, IGenericNullable {
 	}
 
 	public static Nullableboolean ofNullable(@Nullable Boolean value) {
-		return new Nullableboolean(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullableboolean(value);
+		}
 	}
 
-	public static <T> Nullableboolean empty() {
-		return new Nullableboolean(null);
+	public static Nullableboolean empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullablebyte.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullablebyte implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullablebyte NULL = new Nullablebyte(null);
 
 	private final Byte value;
 
@@ -20,11 +23,15 @@ public class Nullablebyte implements Serializable, IGenericNullable {
 	}
 
 	public static Nullablebyte ofNullable(@Nullable Byte value) {
-		return new Nullablebyte(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablebyte(value);
+		}
 	}
 
-	public static <T> Nullablebyte empty() {
-		return new Nullablebyte(null);
+	public static Nullablebyte empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullablechar.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullablechar implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullablechar NULL = new Nullablechar(null);
 
 	private final Character value;
 
@@ -20,11 +23,15 @@ public class Nullablechar implements Serializable, IGenericNullable {
 	}
 
 	public static Nullablechar ofNullable(@Nullable Character value) {
-		return new Nullablechar(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablechar(value);
+		}
 	}
 
-	public static <T> Nullablechar empty() {
-		return new Nullablechar(null);
+	public static Nullablechar empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullabledouble.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullabledouble implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullabledouble NULL = new Nullabledouble(null);
 
 	private final Double value;
 
@@ -20,11 +23,15 @@ public class Nullabledouble implements Serializable, IGenericNullable {
 	}
 
 	public static Nullabledouble ofNullable(@Nullable Double value) {
-		return new Nullabledouble(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullabledouble(value);
+		}
 	}
 
-	public static <T> Nullabledouble empty() {
-		return new Nullabledouble(null);
+	public static Nullabledouble empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullablefloat.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullablefloat implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullablefloat NULL = new Nullablefloat(null);
 
 	private final Float value;
 
@@ -20,11 +23,15 @@ public class Nullablefloat implements Serializable, IGenericNullable {
 	}
 
 	public static Nullablefloat ofNullable(@Nullable Float value) {
-		return new Nullablefloat(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablefloat(value);
+		}
 	}
 
-	public static <T> Nullablefloat empty() {
-		return new Nullablefloat(null);
+	public static Nullablefloat empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullableint.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullableint implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullableint NULL = new Nullableint(null);
 
 	private final Integer value;
 
@@ -20,11 +23,15 @@ public class Nullableint implements Serializable, IGenericNullable {
 	}
 
 	public static Nullableint ofNullable(@Nullable Integer value) {
-		return new Nullableint(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullableint(value);
+		}
 	}
 
-	public static <T> Nullableint empty() {
-		return new Nullableint(null);
+	public static Nullableint empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullablelong.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullablelong implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullablelong NULL = new Nullablelong(null);
 
 	private final Long value;
 
@@ -20,11 +23,15 @@ public class Nullablelong implements Serializable, IGenericNullable {
 	}
 
 	public static Nullablelong ofNullable(@Nullable Long value) {
-		return new Nullablelong(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablelong(value);
+		}
 	}
 
-	public static <T> Nullablelong empty() {
-		return new Nullablelong(null);
+	public static Nullablelong empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {

src/main/java/it/cavallium/data/generator/nativedata/Nullableshort.java

@@ -1,5 +1,6 @@
 package it.cavallium.data.generator.nativedata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 public class Nullableshort implements Serializable, IGenericNullable {
 
+	@Serial
 	private static final long serialVersionUID = 1L;
+	private static final Nullableshort NULL = new Nullableshort(null);
 
 	private final Short value;
 
@@ -20,11 +23,15 @@ public class Nullableshort implements Serializable, IGenericNullable {
 	}
 
 	public static Nullableshort ofNullable(@Nullable Short value) {
-		return new Nullableshort(value);
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullableshort(value);
+		}
 	}
 
-	public static <T> Nullableshort empty() {
-		return new Nullableshort(null);
+	public static Nullableshort empty() {
+		return NULL;
 	}
 
 	public boolean isEmpty() {