| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.johnzon.mapper; |
| |
| import javax.json.JsonObject; |
| import java.lang.reflect.Constructor; |
| import java.util.stream.Stream; |
| |
| |
| public class MissingFactoryException extends MapperException { |
| public MissingFactoryException(final Class<?> clazz, final JsonObject object, final String json) { |
| super(message(clazz, object, json)); |
| } |
| |
| private static String message(final Class<?> clazz, final JsonObject object, final String json) { |
| if (clazz.isArray()) { |
| return String.format("%s array not a suitable datatype for %s: %s", |
| clazz.getSimpleName(), |
| ExceptionMessages.description(object), |
| json); |
| } |
| |
| if (clazz.isInterface()) { |
| return String.format("%s is an interface and requires an adapter or factory. Cannot deserialize %s: %s%n%s not instantiable", |
| clazz.getSimpleName(), |
| ExceptionMessages.description(object), |
| json, |
| clazz); |
| } |
| |
| String message = String.format("%s has no suitable constructor or factory. Cannot deserialize %s: %s", |
| clazz.getSimpleName(), |
| ExceptionMessages.description(object), |
| json); |
| |
| final Constructor<?>[] constructors = clazz.getDeclaredConstructors(); |
| final long constructorsWithParameters = Stream.of(constructors) |
| .filter(constructor -> constructor.getParameterTypes().length > 0) |
| .count(); |
| |
| // Was a constructor with parameters our only option? If so, help people |
| // learn how to properly use constructors with parameters |
| if (constructorsWithParameters > 0 && constructors.length == constructorsWithParameters) { |
| message += "\nUse Johnzon @ConstructorProperties or @JsonbCreator if constructor arguments are needed"; |
| } |
| |
| // Add full class name as final detail |
| message += "\n" + clazz + " not instantiable"; |
| return message; |
| } |
| } |