[Java][jersey2] Make (de)serialization work for oneOf models, add convenience and comparison methods (#6323)

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/AbstractOpenApiSchema.java

@@ -14,10 +14,13 @@
 package org.openapitools.client.model;
 
 import org.openapitools.client.ApiException;
+import java.util.Objects;
 import java.lang.reflect.Type;
 import java.util.Map;
 import javax.ws.rs.core.GenericType;
 
+import com.fasterxml.jackson.annotation.JsonValue;
+
 /**
  * Abstract class for oneOf,anyOf schemas defined in OpenAPI spec
  */
@@ -50,6 +53,7 @@ public abstract class AbstractOpenApiSchema {
      *
      * @return an instance of the actual schema/object
      */
+    @JsonValue
     public Object getActualInstance() {return instance;}
 
     /***
@@ -68,6 +72,46 @@ public abstract class AbstractOpenApiSchema {
         return schemaType;
     }
 
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ").append(getClass()).append(" {\n");
+        sb.append("    instance: ").append(toIndentedString(instance)).append("\n");
+        sb.append("    isNullable: ").append(toIndentedString(isNullable)).append("\n");
+        sb.append("    schemaType: ").append(toIndentedString(schemaType)).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    ");
+    }
+
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AbstractOpenApiSchema a = (AbstractOpenApiSchema) o;
+        return Objects.equals(this.instance, a.instance) &&
+            Objects.equals(this.isNullable, a.isNullable) &&
+            Objects.equals(this.schemaType, a.schemaType);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(instance, isNullable, schemaType);
+    }
+
     /***
      * Is nullalble
      *