[JAVA] Enum with Integer types formatted int64 does not generate the right

Description

Enum with Integer types formatted int64 value is mapped long type and TypeAdapter raise below Exception
Caused by: java.lang.ClassCastException: class java.lang.String cannot be cast to class java.lang.Long (java.lang.String and java.lang.Long are in module java.base of loader 'bootstrap')

generated code

/*
 * API
 * No description provided (generated by Swagger Codegen https://github.com/swagger-api/swagger-codegen)
 *
 * OpenAPI spec version: 0.0.1
 * 
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */

package io.swagger.client.model;

import java.util.Objects;
import java.util.Arrays;
import com.google.gson.TypeAdapter;
import com.google.gson.annotations.JsonAdapter;
import com.google.gson.annotations.SerializedName;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import io.swagger.v3.oas.annotations.media.Schema;
import java.io.IOException;
/**
 * Model
 */

@javax.annotation.Generated(value = "io.swagger.codegen.v3.generators.java.JavaClientCodegen", date = "2022-02-24T19:18:55.072810+09:00[Asia/Tokyo]")
public class Model {
  /**
   * Gets or Sets status
   */
  @JsonAdapter(StatusEnum.Adapter.class)
  public enum StatusEnum {
    NUMBER_0(0l),
    NUMBER_1(1l);

    private Long value;

    StatusEnum(Long value) {
      this.value = value;
    }
    public Long getValue() {
      return value;
    }

    @Override
    public String toString() {
      return String.valueOf(value);
    }
    public static StatusEnum fromValue(Long input) {
      for (StatusEnum b : StatusEnum.values()) {
        if (b.value.equals(input)) {
          return b;
        }
      }
      return null;
    }
    public static class Adapter extends TypeAdapter<StatusEnum> {
      @Override
      public void write(final JsonWriter jsonWriter, final StatusEnum enumeration) throws IOException {
        jsonWriter.value(String.valueOf(enumeration.getValue()));
      }

      @Override
      public StatusEnum read(final JsonReader jsonReader) throws IOException {
        Object value = jsonReader.nextString();
        return StatusEnum.fromValue((Long)(value));
      }
    }
  }  @SerializedName("status")
  private StatusEnum status = null;

  public Model status(StatusEnum status) {
    this.status = status;
    return this;
  }

   /**
   * Get status
   * @return status
  **/
  @Schema(description = "")
  public StatusEnum getStatus() {
    return status;
  }

  public void setStatus(StatusEnum status) {
    this.status = status;
  }


  @Override
  public boolean equals(java.lang.Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    Model model = (Model) o;
    return Objects.equals(this.status, model.status);
  }

  @Override
  public int hashCode() {
    return Objects.hash(status);
  }


  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append("class Model {\n");
    
    sb.append("    status: ").append(toIndentedString(status)).append("\n");
    sb.append("}");
    return sb.toString();
  }

  /**
   * Convert the given object to string with each line indented by 4 spaces
   * (except the first line).
   */
  private String toIndentedString(java.lang.Object o) {
    if (o == null) {
      return "null";
    }
    return o.toString().replace("\n", "\n    ");
  }

}

Swagger-codegen version

3.0.31

Swagger declaration file content or url

openapi: 3.0.2
info:
  version: "0.0.1"
  title: API
servers:
  - url: /
paths:
  /api:
    get:
      responses:
        "200":
          description: OK
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Model"
components:
  schemas:
      Model:
        properties:
          status:
            type: integer
            enum:
              - 0
              - 1
            format: int64

Command line used for generation

java -jar swagger-codegen-cli-3.0.31.jar generate -i ${yml} -l java -o ${outputDir}

Steps to reproduce

cli command

Related issues/PRs

https://github.com/swagger-api/swagger-codegen/issues/11166
https://github.com/swagger-api/swagger-codegen-generators/pull/978/files

Suggest a fix/enhancement

ForThisLine

Add a tag for long type , maybe fix this problem.

Reproduce the issue with the OpenAPI YAML and the swagger-codegen CLI command shown, then inspect the Java client generator/template responsible for the generated Model.StatusEnum.Adapter. Compare the related issue and generators PR 978; done means an int64 enum can be deserialized without the reported ClassCastException.