Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
ExchangeHelper |
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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.util; |
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18 | ||
19 | import org.apache.camel.Endpoint; |
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20 | import org.apache.camel.Exchange; |
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21 | import org.apache.camel.InvalidPayloadException; |
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22 | import org.apache.camel.InvalidTypeException; |
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23 | import org.apache.camel.NoSuchEndpointException; |
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24 | import org.apache.camel.NoSuchPropertyException; |
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25 | ||
26 | /** |
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27 | * Some helper methods for working with {@link Exchange} objects |
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28 | * |
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29 | * @version $Revision: 563607 $ |
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30 | */ |
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31 | public class ExchangeHelper { |
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32 | ||
33 | /** |
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34 | * Utility classes should not have a public constructor. |
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35 | */ |
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36 | 0 | private ExchangeHelper() { |
37 | 0 | } |
38 | ||
39 | /** |
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40 | * Attempts to resolve the endpoint for the given value |
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41 | * |
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42 | * @param exchange the message exchange being processed |
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43 | * @param value the value which can be an {@link Endpoint} or an object |
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44 | * which provides a String representation of an endpoint via |
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45 | * {@link #toString()} |
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46 | * |
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47 | * @return the endpoint |
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48 | * @throws NoSuchEndpointException if the endpoint cannot be resolved |
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49 | */ |
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50 | @SuppressWarnings({"unchecked" }) |
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51 | public static <E extends Exchange> Endpoint<E> resolveEndpoint(E exchange, Object value) |
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52 | throws NoSuchEndpointException { |
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53 | Endpoint<E> endpoint; |
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54 | 9 | if (value instanceof Endpoint) { |
55 | 0 | endpoint = (Endpoint<E>)value; |
56 | 0 | } else { |
57 | 9 | String uri = value.toString(); |
58 | 9 | endpoint = CamelContextHelper.getMandatoryEndpoint(exchange.getContext(), uri); |
59 | } |
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60 | 9 | return endpoint; |
61 | } |
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62 | ||
63 | public static <T> T getMandatoryProperty(Exchange exchange, String propertyName, Class<T> type) |
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64 | throws NoSuchPropertyException { |
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65 | 45 | T answer = exchange.getProperty(propertyName, type); |
66 | 45 | if (answer == null) { |
67 | 6 | throw new NoSuchPropertyException(exchange, propertyName, type); |
68 | } |
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69 | 39 | return answer; |
70 | } |
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71 | ||
72 | /** |
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73 | * Returns the mandatory inbound message body of the correct type or throws |
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74 | * an exception if it is not present |
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75 | */ |
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76 | public static <T> T getMandatoryInBody(Exchange exchange, Class<T> type) throws InvalidPayloadException { |
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77 | 18 | T answer = exchange.getIn().getBody(type); |
78 | 18 | if (answer == null) { |
79 | 0 | throw new InvalidPayloadException(exchange, type); |
80 | } |
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81 | 18 | return answer; |
82 | } |
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83 | ||
84 | /** |
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85 | * Converts the value to the given expected type or throws an exception |
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86 | */ |
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87 | public static <T> T convertToMandatoryType(Exchange exchange, Class<T> type, Object value) |
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88 | throws InvalidTypeException { |
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89 | 0 | T answer = convertToType(exchange, type, value); |
90 | 0 | if (answer == null) { |
91 | 0 | throw new InvalidTypeException(exchange, value, type); |
92 | } |
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93 | 0 | return answer; |
94 | } |
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95 | ||
96 | /** |
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97 | * Converts the value to the given expected type returning null if it could |
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98 | * not be converted |
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99 | */ |
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100 | public static <T> T convertToType(Exchange exchange, Class<T> type, Object value) { |
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101 | 0 | return exchange.getContext().getTypeConverter().convertTo(type, value); |
102 | } |
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103 | } |