Start on kryo-jdkgdxds.

That means FilteredStringSetSerializer for now.

gradle.properties

@@ -24,7 +24,7 @@ funderbyVersion=0.1.1
 regexodusVersion=0.1.15
 digitalVersion=0.4.5
 juniperVersion=0.5.0
-jdkgdxdsVersion=1.4.4
+jdkgdxdsVersion=1.4.6
 simpleGraphsVersion=v5.1.1
 
 GROUP=com.github.tommyettinger

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

kryo-jdkgdxds/build.gradle

@@ -26,7 +26,7 @@ if(JavaVersion.current().isJava9Compatible()) {
 }
 
 dependencies {
-    api "com.github.tommyettinger:kryo-digital:0.4.3.0"
+    api "com.github.tommyettinger:kryo-digital:0.4.5.0"
     api "com.esotericsoftware:kryo:$kryoVersion"
     api "com.github.tommyettinger:jdkgdxds:$jdkgdxdsVersion"
     testImplementation "junit:junit:4.13.2"

kryo-jdkgdxds/gradle.properties

@@ -19,4 +19,4 @@ POM_ARTIFACT_ID=kryo-jdkgdxds
 POM_NAME=kryo-jdkgdxds
 POM_DESCRIPTION=Kryo 5.x serializers for jdkgdxds types
 POM_INCEPTION_YEAR=2022
-VERSION_NAME=1.4.4.1-SNAPSHOT
+VERSION_NAME=1.4.6.0-SNAPSHOT

kryo-jdkgdxds/src/main/java/com/github/tommyettinger/kryo/jdkgdxds/FilteredStringSetSerializer.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2022-2023 See AUTHORS file.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.github.tommyettinger.kryo.jdkgdxds;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import com.esotericsoftware.kryo.serializers.CollectionSerializer;
+import com.github.tommyettinger.ds.CharFilter;
+import com.github.tommyettinger.ds.FilteredStringSet;
+import com.github.tommyettinger.ds.Utilities;
+
+import java.util.NoSuchElementException;
+
+public class FilteredStringSetSerializer extends CollectionSerializer<FilteredStringSet> {
+    public FilteredStringSetSerializer() {
+        super();
+        setElementsCanBeNull(false);
+    }
+
+    @Override
+    protected void writeHeader(Kryo kryo, Output output, FilteredStringSet collection) {
+        CharFilter fil = collection.getFilter();
+        if(fil == null)
+            throw new NoSuchElementException("A FilteredStringSet must have a non-null filter to be serialized.");
+        output.writeString(fil.getName());
+    }
+
+    @Override
+    protected FilteredStringSet create(Kryo kryo, Input input, Class<? extends FilteredStringSet> type, int size) {
+        return new FilteredStringSet(CharFilter.get(input.readString()), size, Utilities.getDefaultLoadFactor());
+    }
+
+    @Override
+    protected FilteredStringSet createCopy(Kryo kryo, FilteredStringSet original) {
+        return new FilteredStringSet(original.getFilter(), original.size(), original.getLoadFactor());
+    }
+}

kryo-jdkgdxds/src/test/java/com/github/tommyettinger/kryo/jdkgdxds/SetTest.java

@@ -247,4 +247,26 @@ public void testHolderOrderedSet() {
             Assert.assertEquals(data, data2);
         }
     }
+
+
+    @Test
+    public void testFilteredStringSet() {
+        CharFilter filter = CharFilter.getOrCreate("LettersOnlyIgnoreCase", Character::isLetter, Character::toUpperCase);
+        Kryo kryo = new Kryo();
+        kryo.register(String.class);
+        kryo.register(FilteredStringSet.class, new FilteredStringSetSerializer());
+
+        FilteredStringSet data = FilteredStringSet.with(filter, "Hello", "World", "!", "YES", "HELLO", "WORLD", "!");
+
+        ByteArrayOutputStream baos = new ByteArrayOutputStream(32);
+        Output output = new Output(baos);
+        kryo.writeObject(output, data);
+        byte[] bytes = output.toBytes();
+        try (Input input = new Input(bytes)) {
+            FilteredStringSet data2 = kryo.readObject(input, FilteredStringSet.class);
+            Assert.assertEquals(data, data2);
+        }
+    }
+
+
 }