001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.impl.converter; 018 019import java.lang.annotation.Annotation; 020import java.util.Collections; 021import java.util.LinkedHashSet; 022import java.util.Set; 023 024import org.apache.camel.spi.PackageScanClassResolver; 025import org.apache.camel.spi.PackageScanFilter; 026 027/** 028 * A {@link org.apache.camel.spi.ClassResolver} which loads type converters 029 * from an instance that implements {@link org.apache.camel.TypeConverters}. 030 * <p/> 031 * This is used when adding converters manually using the 032 * {@link org.apache.camel.impl.converter.BaseTypeConverterRegistry#addTypeConverters(org.apache.camel.TypeConverters)} method. 033 */ 034public class TypeConvertersPackageScanClassResolver implements PackageScanClassResolver { 035 036 private final Set<ClassLoader> classLoaders = new LinkedHashSet<>(); 037 private final Set<Class<?>> converters = new LinkedHashSet<>(); 038 039 public TypeConvertersPackageScanClassResolver(Class<?> clazz) { 040 converters.add(clazz); 041 // use the classloader that loaded the class 042 classLoaders.add(clazz.getClassLoader()); 043 } 044 045 @Override 046 public void setClassLoaders(Set<ClassLoader> classLoaders) { 047 // add all the class loaders 048 this.classLoaders.addAll(classLoaders); 049 } 050 051 @Override 052 public Set<ClassLoader> getClassLoaders() { 053 // return a new set to avoid any concurrency issues in other runtimes such as OSGi 054 return Collections.unmodifiableSet(new LinkedHashSet<>(classLoaders)); 055 } 056 057 @Override 058 public void addClassLoader(ClassLoader classLoader) { 059 classLoaders.add(classLoader); 060 } 061 062 @Override 063 public Set<Class<?>> findAnnotated(Class<? extends Annotation> annotation, String... packageNames) { 064 return converters; 065 } 066 067 @Override 068 public Set<Class<?>> findAnnotated(Set<Class<? extends Annotation>> annotations, String... packageNames) { 069 return converters; 070 } 071 072 @Override 073 public Set<Class<?>> findImplementations(Class<?> parent, String... packageNames) { 074 // noop 075 return null; 076 } 077 078 @Override 079 public Set<Class<?>> findByFilter(PackageScanFilter filter, String... packageNames) { 080 // noop 081 return null; 082 } 083 084 @Override 085 public void addFilter(PackageScanFilter filter) { 086 // noop 087 } 088 089 @Override 090 public void removeFilter(PackageScanFilter filter) { 091 // noop 092 } 093}