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.component.language; 018 019import java.net.URLDecoder; 020import java.util.Map; 021 022import org.apache.camel.Endpoint; 023import org.apache.camel.impl.UriEndpointComponent; 024import org.apache.camel.spi.Language; 025import org.apache.camel.util.ObjectHelper; 026import org.apache.camel.util.ResourceHelper; 027 028/** 029 * The <a href="http://camel.apache.org/language-component.html">Language component</a> enables sending 030 * {@link org.apache.camel.Exchange}s to a given language in order to have a script executed. 031 * 032 * @version 033 */ 034public class LanguageComponent extends UriEndpointComponent { 035 036 public static final String RESOURCE = "resource:"; 037 038 public LanguageComponent() { 039 super(LanguageEndpoint.class); 040 } 041 042 protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception { 043 String name = ObjectHelper.before(remaining, ":"); 044 String script = ObjectHelper.after(remaining, ":"); 045 // no script then remaining is the language name 046 if (name == null && script == null) { 047 name = remaining; 048 } 049 050 if (ObjectHelper.isEmpty(name)) { 051 throw new IllegalArgumentException("Illegal syntax. Name of language not given in uri: " + uri); 052 } 053 Language language = getCamelContext().resolveLanguage(name); 054 055 String resourceUri = null; 056 String resource = script; 057 if (resource != null) { 058 if (resource.startsWith(RESOURCE)) { 059 resource = resource.substring(RESOURCE.length()); 060 } 061 if (ResourceHelper.hasScheme(resource)) { 062 // the script is a uri for a resource 063 resourceUri = resource; 064 // then the script should be null 065 script = null; 066 } else { 067 // the script is provided as text in the uri, so decode to utf-8 068 script = URLDecoder.decode(script, "UTF-8"); 069 // then the resource should be null 070 resourceUri = null; 071 } 072 } 073 074 LanguageEndpoint endpoint = new LanguageEndpoint(uri, this, language, null, resourceUri); 075 endpoint.setScript(script); 076 setProperties(endpoint, parameters); 077 return endpoint; 078 } 079 080}