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.reifier.transformer; 018 019import org.apache.camel.CamelContext; 020import org.apache.camel.model.transformer.CustomTransformerDefinition; 021import org.apache.camel.model.transformer.TransformerDefinition; 022import org.apache.camel.spi.Transformer; 023 024public class CustomTransformeReifier extends TransformerReifier<CustomTransformerDefinition> { 025 026 public CustomTransformeReifier(TransformerDefinition definition) { 027 super((CustomTransformerDefinition)definition); 028 } 029 030 @Override 031 protected Transformer doCreateTransformer(CamelContext context) throws Exception { 032 if (definition.getRef() == null && definition.getClassName() == null) { 033 throw new IllegalArgumentException("'ref' or 'className' must be specified for customTransformer"); 034 } 035 Transformer transformer; 036 if (definition.getRef() != null) { 037 transformer = context.getRegistry().lookupByNameAndType(definition.getRef(), Transformer.class); 038 if (transformer == null) { 039 throw new IllegalArgumentException("Cannot find transformer with ref:" + definition.getRef()); 040 } 041 if (transformer.getModel() != null || transformer.getFrom() != null || transformer.getTo() != null) { 042 throw new IllegalArgumentException(String.format("Transformer '%s' is already in use. Please check if duplicate transformer exists.", definition.getRef())); 043 } 044 } else { 045 Class<Transformer> transformerClass = context.getClassResolver().resolveMandatoryClass(definition.getClassName(), Transformer.class); 046 if (transformerClass == null) { 047 throw new IllegalArgumentException("Cannot find transformer class: " + definition.getClassName()); 048 } 049 transformer = context.getInjector().newInstance(transformerClass, false); 050 051 } 052 transformer.setCamelContext(context); 053 return transformer.setModel(definition.getScheme()).setFrom(definition.getFromType()).setTo(definition.getToType()); 054 } 055 056}