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.http4; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Expression; 021 import org.apache.camel.builder.ExpressionBuilder; 022 import org.apache.http.client.methods.HttpDelete; 023 import org.apache.http.client.methods.HttpEntityEnclosingRequestBase; 024 import org.apache.http.client.methods.HttpGet; 025 import org.apache.http.client.methods.HttpHead; 026 import org.apache.http.client.methods.HttpOptions; 027 import org.apache.http.client.methods.HttpPost; 028 import org.apache.http.client.methods.HttpPut; 029 import org.apache.http.client.methods.HttpRequestBase; 030 import org.apache.http.client.methods.HttpTrace; 031 032 public enum HttpMethods implements Expression { 033 034 GET(HttpGet.class), 035 POST(HttpPost.class), 036 PUT(HttpPut.class), 037 DELETE(HttpDelete.class), 038 HEAD(HttpHead.class), 039 OPTIONS(HttpOptions.class), 040 TRACE(HttpTrace.class); 041 042 final Class<? extends HttpRequestBase> clazz; 043 final boolean entity; 044 045 HttpMethods(Class<? extends HttpRequestBase> clazz) { 046 this.clazz = clazz; 047 entity = HttpEntityEnclosingRequestBase.class.isAssignableFrom(clazz); 048 } 049 050 public HttpRequestBase createMethod(final String url) { 051 try { 052 return clazz.getDeclaredConstructor(String.class).newInstance(url); 053 } catch (Exception e) { 054 throw new RuntimeException(e); 055 } 056 } 057 058 public final boolean isEntityEnclosing() { 059 return entity; 060 } 061 062 public <T> T evaluate(Exchange exchange, Class<T> type) { 063 return ExpressionBuilder.constantExpression(name()).evaluate(exchange, type); 064 } 065 066 }