org.openapitools.codegen.CodegenModelFactory Maven / Gradle / Ivy
/*
* Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
* Copyright 2018 SmartBear Software
*
* Licensed 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.openapitools.codegen;
import java.util.HashMap;
import java.util.Map;
public final class CodegenModelFactory {
private static final Map> typeMapping = new HashMap>();
/**
* Configure a different implementation class.
*
* @param type the type that shall be replaced
* @param implementation the implementation class must extend the default class and must provide a public no-arg constructor
*/
public static void setTypeMapping(CodegenModelType type, Class implementation) {
if (!type.getDefaultImplementation().isAssignableFrom(implementation)) {
throw new IllegalArgumentException(implementation.getSimpleName() + " doesn't extend " + type.getDefaultImplementation().getSimpleName());
}
try {
implementation.newInstance();
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
typeMapping.put(type, implementation);
}
@SuppressWarnings("unchecked")
public static T newInstance(CodegenModelType type) {
Class classType = typeMapping.get(type);
try {
return (T) (classType != null ? classType : type.getDefaultImplementation()).newInstance();
} catch (IllegalAccessException | InstantiationException e) {
throw new RuntimeException(e);
}
}
}