content: /*
   * 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.camel.quarkus.core;
  
  import java.io.InputStream;
  import java.net.URL;
  import java.util.Collections;
  import java.util.Enumeration;
  import java.util.LinkedHashSet;
  import java.util.Set;
  
  import org.apache.camel.spi.ClassResolver;
  import org.apache.camel.util.CastUtils;
  import org.apache.camel.util.ObjectHelper;
  
  public class CamelQuarkusClassResolver implements ClassResolver {
  
      private Set<ClassLoader> classLoaders;
      private final ClassLoader applicationContextClassLoader;
  
      public CamelQuarkusClassResolver(ClassLoader applicationContextClassLoader) {
          this.applicationContextClassLoader = applicationContextClassLoader;
      }
  
      @Override
      public void addClassLoader(ClassLoader classLoader) {
          if (classLoaders == null) {
              classLoaders = new LinkedHashSet<>();
          }
          classLoaders.add(classLoader);
      }
  
      @Override
      public Set<ClassLoader> getClassLoaders() {
          if (classLoaders == null) {
              return Collections.emptySet();
          }
          return Collections.unmodifiableSet(classLoaders);
      }
  
      @Override
      public ClassLoader getClassLoader(String name) {
          if (classLoaders != null) {
              for (ClassLoader cl : classLoaders) {
                  if (name.equals(cl.getName())) {
                      return cl;
                  }
              }
          }
          return null;
      }
  
      @Override
      public Class<?> resolveClass(String name) {
          Class<?> result = loadClass(name, applicationContextClassLoader);
          if (result != null) {
              return result;
          }
  
          if (ObjectHelper.isNotEmpty(classLoaders)) {
              for (ClassLoader loader : classLoaders) {
                  result = loadClass(name, loader);
                  if (result != null) {
                      return result;
                  }
              }
          }
  
          return null;
      }
  
      @Override
      public <T> Class<T> resolveClass(String name, Class<T> type) {
          return CastUtils.cast(loadClass(name, applicationContextClassLoader));
      }
  
      @Override
      public Class<?> resolveClass(String name, ClassLoader loader) {
          return loadClass(name, loader);
      }
  
      @Override
      public <T> Class<T> resolveClass(String name, Class<T> type, ClassLoader loader) {
          return CastUtils.cast(loadClass(name, loader));
      }
  
      @Override
      public Class<?> resolveMandatoryClass(String name) throws ClassNotFoundException {
          Class<?> answer = resolveClass(name);
          if (answer == null) {
              throw new ClassNotFoundException(name);
          }
          return answer;
      }
  
      @Override
      public <T> Class<T> resolveMandatoryClass(String name, Class<T> type) throws ClassNotFoundException {
          Class<T> answer = resolveClass(name, type);
          if (answer == null) {
              throw new ClassNotFoundException(name);
          }
          return answer;
      }
  
      @Override
      public Class<?> resolveMandatoryClass(String name, ClassLoader loader) throws ClassNotFoundException {
          Class<?> answer = resolveClass(name, loader);
          if (answer == null) {
              throw new ClassNotFoundException(name);
          }
          return answer;
      }
  
      @Override
      public <T> Class<T> resolveMandatoryClass(String name, Class<T> type, ClassLoader loader) throws ClassNotFoundException {
          Class<T> answer = resolveClass(name, type, loader);
          if (answer == null) {
              throw new ClassNotFoundException(name);
          }
          return answer;
      }
  
      @Override
      public InputStream loadResourceAsStream(String uri) {
          return ObjectHelper.loadResourceAsStream(uri, applicationContextClassLoader);
      }
  
      @Override
      public URL loadResourceAsURL(String uri) {
          return ObjectHelper.loadResourceAsURL(uri, applicationContextClassLoader);
      }
  
      @Override
      public Enumeration<URL> loadResourcesAsURL(String uri) {
          return loadAllResourcesAsURL(uri);
      }
  
      @Override
      public Enumeration<URL> loadAllResourcesAsURL(String uri) {
          return ObjectHelper.loadResourcesAsURL(uri);
      }
  
      protected Class<?> loadClass(String name, ClassLoader loader) {
          return ObjectHelper.loadClass(name, loader);
      }
  
  }
  