[Java] use raw type serializer for getSerialzier in jit (#943)

use raw type serializer for getSerialzier in jit

java/fury-core/src/main/java/io/fury/builder/BaseObjectCodecBuilder.java

@@ -499,7 +499,7 @@ protected Expression getOrCreateSerializer(Class<?> cls) {
       // Don't invoke `Serializer.newSerializer` here, since it(ex. ObjectSerializer) may set itself
       // as global serializer, which overwrite serializer updates in jit callback.
       Expression newSerializerExpr =
-          inlineInvoke(classResolverRef, "getSerializer", SERIALIZER_TYPE, fieldTypeExpr);
+          inlineInvoke(classResolverRef, "getRawSerializer", SERIALIZER_TYPE, fieldTypeExpr);
       String name = ctx.newName(StringUtils.uncapitalize(serializerClass.getSimpleName()));
       // It's ok it jit already finished and this method return false, in such cases
       // `serializerClass` is already jit generated class.

java/fury-core/src/main/java/io/fury/resolver/ClassResolver.java

@@ -30,6 +30,7 @@
 import com.google.common.primitives.Primitives;
 import com.google.common.reflect.TypeToken;
 import io.fury.Fury;
+import io.fury.annotation.CodegenInvoke;
 import io.fury.annotation.Internal;
 import io.fury.builder.CodecUtils;
 import io.fury.builder.Generated;
@@ -738,6 +739,17 @@ public <T> Serializer<T> getSerializer(Class<T> cls) {
     return (Serializer<T>) getOrUpdateClassInfo(cls).serializer;
   }
 
+  /**
+   * Return serializer without generics for specified class. The cast of Serializer to subclass
+   * serializer with generic is easy to raise compiler error for javac, so just use raw type.
+   */
+  @Internal
+  @CodegenInvoke
+  public Serializer<?> getRawSerializer(Class<?> cls) {
+    Preconditions.checkNotNull(cls);
+    return getOrUpdateClassInfo(cls).serializer;
+  }
+
   public boolean isSerializable(Class<?> cls) {
     if (ReflectionUtils.isAbstract(cls) || cls.isInterface()) {
       return false;