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.language; 018 019 import java.net.URLDecoder; 020 import java.util.Map; 021 022 import org.apache.camel.Endpoint; 023 import org.apache.camel.Expression; 024 import org.apache.camel.impl.DefaultComponent; 025 import org.apache.camel.spi.Language; 026 import org.apache.camel.util.ObjectHelper; 027 import org.apache.camel.util.ResourceHelper; 028 029 /** 030 * The <a href="http://camel.apache.org/language-component.html">language component</a> to send 031 * {@link org.apache.camel.Exchange}s to a given language and have the script being executed. 032 * 033 * @version 034 */ 035 public class LanguageComponent extends DefaultComponent { 036 037 protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception { 038 String name = ObjectHelper.before(remaining, ":"); 039 String script = ObjectHelper.after(remaining, ":"); 040 // no script then remaining is the language name 041 if (name == null && script == null) { 042 name = remaining; 043 } 044 045 if (ObjectHelper.isEmpty(name)) { 046 throw new IllegalArgumentException("Illegal syntax. Name of language not given in uri: " + uri); 047 } 048 Language language = getCamelContext().resolveLanguage(name); 049 050 Expression expression = null; 051 String resourceUri = null; 052 if (script != null) { 053 if (ResourceHelper.hasScheme(script)) { 054 // the script is a uri for a resource 055 resourceUri = script; 056 } else { 057 // the script is provided as text in the uri, so decode to utf-8 058 expression = language.createExpression(URLDecoder.decode(script, "UTF-8")); 059 } 060 } 061 062 return new LanguageEndpoint(uri, this, language, expression, resourceUri); 063 } 064 }