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 */ 017 package org.apache.camel.component.file; 018 019 import org.apache.camel.Converter; 020 import org.apache.camel.Exchange; 021 import org.apache.camel.FallbackConverter; 022 import org.apache.camel.TypeConverter; 023 import org.apache.camel.spi.TypeConverterRegistry; 024 025 /** 026 * A set of converter methods for working with generic file types 027 */ 028 @Converter 029 public final class GenericFileConverter { 030 031 private GenericFileConverter() { 032 // Helper Class 033 } 034 035 @FallbackConverter 036 @SuppressWarnings("unchecked") 037 public static Object convertTo(Class<?> type, Exchange exchange, Object value, TypeConverterRegistry registry) { 038 // use a fallback type converter so we can convert the embedded body if the value is GenericFile 039 if (GenericFile.class.isAssignableFrom(value.getClass())) { 040 041 GenericFile file = (GenericFile) value; 042 Class from = file.getBody().getClass(); 043 044 // maybe from is already the type we want 045 if (from.isAssignableFrom(type)) { 046 return file.getBody(); 047 } 048 049 // no then try to lookup a type converter 050 TypeConverter tc = registry.lookup(type, from); 051 if (tc != null) { 052 Object body = file.getBody(); 053 return tc.convertTo(type, exchange, body); 054 } 055 } 056 057 return null; 058 } 059 060 @Converter 061 public static String convertToString(GenericFile file, Exchange exchange) { 062 if (exchange != null) { 063 return exchange.getContext().getTypeConverter().convertTo(String.class, file.getBody()); 064 } else { 065 // should revert to fallback converter if we dont have an exchange 066 return null; 067 } 068 } 069 070 }