tillrohrmann commented on a change in pull request #19:
URL:
https://github.com/apache/flink-statefun-playground/pull/19#discussion_r797654985
##########
File path:
java/connected-components/src/main/java/org/apache/flink/statefun/playground/java/connectedcomponents/types/JavaType.java
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@@ -0,0 +1,70 @@
+package org.apache.flink.statefun.playground.java.connectedcomponents.types;
+
+import org.apache.flink.statefun.sdk.java.TypeName;
+import org.apache.flink.statefun.sdk.java.slice.Slice;
+import org.apache.flink.statefun.sdk.java.slice.Slices;
+import org.apache.flink.statefun.sdk.java.types.Type;
+import org.apache.flink.statefun.sdk.java.types.TypeCharacteristics;
+import org.apache.flink.statefun.sdk.java.types.TypeSerializer;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.Set;
+
+/**
+ * Simple type that uses Java serialization to serialize values.
+ *
+ * @param <T> type to hold
+ */
+final class JavaType<T> implements Type<T> {
+ private static final JavaSerializer INSTANCE = new JavaSerializer();
+ private final TypeName typeName;
+
+ JavaType(TypeName typeName) {
+ this.typeName = typeName;
+ }
+
+ @Override
+ public TypeName typeName() {
+ return typeName;
+ }
+
+ @Override
+ public TypeSerializer<T> typeSerializer() {
+ return INSTANCE;
+ }
+
+ @Override
+ public Set<TypeCharacteristics> typeCharacteristics() {
+ return
Collections.unmodifiableSet(EnumSet.of(TypeCharacteristics.IMMUTABLE_VALUES));
+ }
+
+ private static final class JavaSerializer<T> implements TypeSerializer<T> {
+ @Override
+ public Slice serialize(T value) {
+ final ByteArrayOutputStream baos = new ByteArrayOutputStream();
Review comment:
Sounds good. Let's not give a wrong example. I'll remove the Java
serialization.
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