java classes generation using @discriminator

[KaryNaiKo]

here is a piece of code:

enum TypeEnum {
  TYPE_A : "TYPE_A",
  TYPE_B : "TYPE_B",
}

@discriminator("type")
model BaseRequest {
  title: string;
  content: string;
}

model ARequest extends BaseRequest {
  type: TypeEnum.TYPE_A;
  homepageId: int64;
}

model BRequest extends BaseRequest {
  type: TypeEnum.TYPE_B;
  itemId: int64;
  itemVersion: int32;
  itemLanguage: string;
}

It generates the following java classes:

BaseRequest

import java.net.URI;
import java.util.Objects;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import org.openapitools.jackson.nullable.JsonNullable;
import java.time.OffsetDateTime;
import jakarta.validation.Valid;
import jakarta.validation.constraints.*;
import io.swagger.v3.oas.annotations.media.Schema;


import java.util.*;
import jakarta.annotation.Generated;

/**
 * BaseRequest
 */

@JsonIgnoreProperties(
  value = "type", // ignore manually set type, it will be automatically generated by Jackson during serialization
  allowSetters = true // allows the type to be set during deserialization
)
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type", visible = true)
@JsonSubTypes({
  @JsonSubTypes.Type(value = ARequest.class, name = "TYPE_A"),
  @JsonSubTypes.Type(value = BRequest.class, name = "TYPE_B")
})

public class BaseRequest {

  private String title;

  private String content;

  private String type;

  public BaseRequest() {
    super();
  }

  /**
   * Constructor with only required parameters
   */
  public BaseRequest(String title, String content, String type) {
    this.title = title;
    this.content = content;
    this.type = type;
  }

  public BaseRequest title(String title) {
    this.title = title;
    return this;
  }

  /**
   * Get title
   * @return title
   */
  @NotNull 
  @Schema(name = "title", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("title")
  public String getTitle() {
    return title;
  }

  public void setTitle(String title) {
    this.title = title;
  }

  public BaseRequest content(String content) {
    this.content = content;
    return this;
  }

  /**
   * Get content
   * @return content
   */
  @NotNull 
  @Schema(name = "content", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("content")
  public String getContent() {
    return content;
  }

  public void setContent(String content) {
    this.content = content;
  }

  public BaseRequest type(String type) {
    this.type = type;
    return this;
  }

  /**
   * Discriminator property for BaseRequest.
   * @return type
   */
  @NotNull 
  @Schema(name = "type", description = "Discriminator property for BaseRequest.", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("type")
  public String getType() {
    return type;
  }

  public void setType(String type) {
    this.type = type;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    BaseRequest baseRequest = (BaseRequest) o;
    return Objects.equals(this.title, baseRequest.title) &&
        Objects.equals(this.content, baseRequest.content) &&
        Objects.equals(this.type, baseRequest.type);
  }

  @Override
  public int hashCode() {
    return Objects.hash(title, content, type);
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append("class BaseRequest {\n");
    sb.append("    title: ").append(toIndentedString(title)).append("\n");
    sb.append("    content: ").append(toIndentedString(content)).append("\n");
    sb.append("    type: ").append(toIndentedString(type)).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(Object o) {
    if (o == null) {
      return "null";
    }
    return o.toString().replace("\n", "\n    ");
  }
}

ARequest

import java.net.URI;
import java.util.Objects;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.JsonValue;
import feedbackservice.openapi.settings.model.BaseRequest;
import org.openapitools.jackson.nullable.JsonNullable;
import java.time.OffsetDateTime;
import jakarta.validation.Valid;
import jakarta.validation.constraints.*;
import io.swagger.v3.oas.annotations.media.Schema;


import java.util.*;
import jakarta.annotation.Generated;

/**
 * ARequest
 */


public class ARequest extends BaseRequest {

  /**
   * Gets or Sets type
   */
  public enum TypeEnum {
    TYPE_A("TYPE_A");

    private String value;

    TypeEnum(String value) {
      this.value = value;
    }

    @JsonValue
    public String getValue() {
      return value;
    }

    @Override
    public String toString() {
      return String.valueOf(value);
    }

    @JsonCreator
    public static TypeEnum fromValue(String value) {
      for (TypeEnum b : TypeEnum.values()) {
        if (b.value.equals(value)) {
          return b;
        }
      }
      throw new IllegalArgumentException("Unexpected value '" + value + "'");
    }
  }

  private TypeEnum type;

  private Long homepageId;

  public ARequest() {
    super();
  }

  /**
   * Constructor with only required parameters
   */
  public ARequest(TypeEnum type, Long homepageId, String title, String content) {
    super(title, content, type);
    this.type = type;
    this.homepageId = homepageId;
  }

  public ARequest type(TypeEnum type) {
    this.type = type;
    return this;
  }

  /**
   * Get type
   * @return type
   */
  @NotNull 
  @Schema(name = "type", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("type")
  public TypeEnum getType() {
    return type;
  }

  public void setType(TypeEnum type) {
    this.type = type;
  }

  public ARequest homepageId(Long homepageId) {
    this.homepageId = homepageId;
    return this;
  }

  /**
   * Get homepageId
   * @return homepageId
   */
  @NotNull 
  @Schema(name = "homepageId", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("homepageId")
  public Long getHomepageId() {
    return homepageId;
  }

  public void setHomepageId(Long homepageId) {
    this.homepageId = homepageId;
  }


  public ARequest title(String title) {
    super.title(title);
    return this;
  }

  public ARequest content(String content) {
    super.content(content);
    return this;
  }
  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    ARequest arequest = (ARequest) o;
    return Objects.equals(this.type, arequest.type) &&
        Objects.equals(this.homepageId, arequest.homepageId) &&
        super.equals(o);
  }

  @Override
  public int hashCode() {
    return Objects.hash(type, homepageId, super.hashCode());
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append("class ARequest {\n");
    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
    sb.append("    type: ").append(toIndentedString(type)).append("\n");
    sb.append("    homepageId: ").append(toIndentedString(homepageId)).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(Object o) {
    if (o == null) {
      return "null";
    }
    return o.toString().replace("\n", "\n    ");
  }
}

BRequest

import java.net.URI;
import java.util.Objects;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.JsonValue;
import feedbackservice.openapi.settings.model.BaseRequest;
import org.openapitools.jackson.nullable.JsonNullable;
import java.time.OffsetDateTime;
import jakarta.validation.Valid;
import jakarta.validation.constraints.*;
import io.swagger.v3.oas.annotations.media.Schema;


import java.util.*;
import jakarta.annotation.Generated;

/**
 * BRequest
 */


public class BRequest extends BaseRequest {

  /**
   * Gets or Sets type
   */
  public enum TypeEnum {
    TYPE_B("TYPE_B");

    private String value;

    TypeEnum(String value) {
      this.value = value;
    }

    @JsonValue
    public String getValue() {
      return value;
    }

    @Override
    public String toString() {
      return String.valueOf(value);
    }

    @JsonCreator
    public static TypeEnum fromValue(String value) {
      for (TypeEnum b : TypeEnum.values()) {
        if (b.value.equals(value)) {
          return b;
        }
      }
      throw new IllegalArgumentException("Unexpected value '" + value + "'");
    }
  }

  private TypeEnum type;

  private Long itemId;

  private Integer itemVersion;

  private String itemLanguage;

  public BRequest() {
    super();
  }

  /**
   * Constructor with only required parameters
   */
  public BRequest(TypeEnum type, Long itemId, Integer itemVersion, String itemLanguage, String title, String content) {
    super(title, content, type);
    this.type = type;
    this.itemId = itemId;
    this.itemVersion = itemVersion;
    this.itemLanguage = itemLanguage;
  }

  public BRequest type(TypeEnum type) {
    this.type = type;
    return this;
  }

  /**
   * Get type
   * @return type
   */
  @NotNull 
  @Schema(name = "type", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("type")
  public TypeEnum getType() {
    return type;
  }

  public void setType(TypeEnum type) {
    this.type = type;
  }

  public BRequest itemId(Long itemId) {
    this.itemId = itemId;
    return this;
  }

  /**
   * Get itemId
   * @return itemId
   */
  @NotNull 
  @Schema(name = "itemId", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("itemId")
  public Long getItemId() {
    return itemId;
  }

  public void setItemId(Long itemId) {
    this.itemId = itemId;
  }

  public BRequest itemVersion(Integer itemVersion) {
    this.itemVersion = itemVersion;
    return this;
  }

  /**
   * Get itemVersion
   * @return itemVersion
   */
  @NotNull 
  @Schema(name = "itemVersion", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("itemVersion")
  public Integer getItemVersion() {
    return itemVersion;
  }

  public void setItemVersion(Integer itemVersion) {
    this.itemVersion = itemVersion;
  }

  public BRequest itemLanguage(String itemLanguage) {
    this.itemLanguage = itemLanguage;
    return this;
  }

  /**
   * Get itemLanguage
   * @return itemLanguage
   */
  @NotNull 
  @Schema(name = "itemLanguage", requiredMode = Schema.RequiredMode.REQUIRED)
  @JsonProperty("itemLanguage")
  public String getItemLanguage() {
    return itemLanguage;
  }

  public void setItemLanguage(String itemLanguage) {
    this.itemLanguage = itemLanguage;
  }


  public BRequest title(String title) {
    super.title(title);
    return this;
  }

  public BRequest content(String content) {
    super.content(content);
    return this;
  }
  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    BRequest brequest = (BRequest) o;
    return Objects.equals(this.type, brequest.type) &&
        Objects.equals(this.itemId, brequest.itemId) &&
        Objects.equals(this.itemVersion, brequest.itemVersion) &&
        Objects.equals(this.itemLanguage, brequest.itemLanguage) &&
        super.equals(o);
  }

  @Override
  public int hashCode() {
    return Objects.hash(type, itemId, itemVersion, itemLanguage, super.hashCode());
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append("class BRequest {\n");
    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
    sb.append("    type: ").append(toIndentedString(type)).append("\n");
    sb.append("    itemId: ").append(toIndentedString(itemId)).append("\n");
    sb.append("    itemVersion: ").append(toIndentedString(itemVersion)).append("\n");
    sb.append("    itemLanguage: ").append(toIndentedString(itemLanguage)).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(Object o) {
    if (o == null) {
      return "null";
    }
    return o.toString().replace("\n", "\n    ");
  }
}

And here is the problem. It creates an inner enum (child class) that doesn't match with base type

Is there a workaround or what did I miss?

[weidongxu-microsoft]

This Java code seems not generated with emitter in this repo (https://www.npmjs.com/package/@typespec/http-client-java -- it won't generate code with Jakarta or Jackson).

If it is not http-client-java, the issue may better be reported to the repository of this particular emitter.