Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
SpringRouteBuilder |
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| 0.0;0 |
1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | package org.apache.camel.spring; |
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18 | ||
19 | import org.apache.camel.CamelContext; |
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20 | import org.apache.camel.builder.RouteBuilder; |
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21 | import org.apache.camel.spring.spi.TransactionInterceptor; |
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22 | ||
23 | import org.springframework.context.ApplicationContext; |
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24 | import org.springframework.transaction.support.TransactionTemplate; |
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25 | ||
26 | /** |
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27 | * An extension of the {@link RouteBuilder} to provide some additional helper |
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28 | * methods |
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29 | * |
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30 | * @version $Revision: 1.1 $ |
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31 | */ |
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32 | 0 | public abstract class SpringRouteBuilder extends RouteBuilder { |
33 | private ApplicationContext applicationContext; |
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34 | ||
35 | public TransactionInterceptor transactionInterceptor() { |
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36 | 0 | return new TransactionInterceptor(bean(TransactionTemplate.class)); |
37 | } |
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38 | ||
39 | /** |
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40 | * Looks up the bean with the given name in the application context and |
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41 | * returns it, or throws an exception if the bean is not present or is not |
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42 | * of the given type |
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43 | * |
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44 | * @param type the type of the bean |
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45 | * @param beanName the name of the bean in the application context |
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46 | * @return the bean |
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47 | */ |
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48 | public <T> T bean(Class<T> type, String beanName) { |
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49 | 0 | ApplicationContext context = getApplicationContext(); |
50 | 0 | return (T)context.getBean(beanName, type); |
51 | } |
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52 | ||
53 | /** |
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54 | * Looks up the bean with the given type in the application context and |
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55 | * returns it, or throws an exception if the bean is not present or there |
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56 | * are multiple possible beans to choose from for the given type |
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57 | * |
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58 | * @param type the type of the bean |
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59 | * @return the bean |
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60 | */ |
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61 | public <T> T bean(Class<T> type) { |
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62 | 0 | ApplicationContext context = getApplicationContext(); |
63 | 0 | String[] names = context.getBeanNamesForType(type, true, true); |
64 | 0 | if (names != null) { |
65 | 0 | int count = names.length; |
66 | 0 | if (count == 1) { |
67 | // lets instantiate the single bean |
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68 | 0 | return (T)context.getBean(names[0]); |
69 | 0 | } else if (count > 1) { |
70 | 0 | throw new IllegalArgumentException("Too many beans in the application context of type: " + type + ". Found: " + count); |
71 | } |
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72 | } |
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73 | 0 | throw new IllegalArgumentException("No bean available in the application context of type: " + type); |
74 | } |
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75 | ||
76 | /** |
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77 | * Returns the application context which has been configured via the |
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78 | * {@link #setApplicationContext(ApplicationContext)} method or from the |
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79 | * underlying {@link SpringCamelContext} |
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80 | * |
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81 | * @return |
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82 | */ |
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83 | public ApplicationContext getApplicationContext() { |
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84 | 0 | if (applicationContext == null) { |
85 | 0 | CamelContext camelContext = getContext(); |
86 | 0 | if (camelContext instanceof SpringCamelContext) { |
87 | 0 | SpringCamelContext springCamelContext = (SpringCamelContext)camelContext; |
88 | 0 | return springCamelContext.getApplicationContext(); |
89 | } else { |
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90 | 0 | throw new IllegalArgumentException("This SpringBuilder is not being used with a SpringCamelContext and there is no applicationContext property configured"); |
91 | } |
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92 | } |
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93 | 0 | return applicationContext; |
94 | } |
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95 | ||
96 | /** |
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97 | * Sets the application context to use to lookup beans |
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98 | */ |
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99 | public void setApplicationContext(ApplicationContext applicationContext) { |
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100 | 0 | this.applicationContext = applicationContext; |
101 | 0 | } |
102 | } |