Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||
Predicate |
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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; |
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18 | ||
19 | /** |
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20 | * Evaluates a binary <a |
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21 | * href="http://activemq.apache.org/camel/predicate.html">predicate</a> on the |
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22 | * message exchange to support things like <a |
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23 | * href="http://activemq.apache.org/camel/scripting-languages.html">scripting |
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24 | * languages</a>, <a href="http://activemq.apache.org/camel/xquery.html">XQuery</a> |
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25 | * or <a href="http://activemq.apache.org/camel/sql.html">SQL</a> as well as |
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26 | * any arbitrary Java expression. |
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27 | * |
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28 | * @version $Revision: 563607 $ |
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29 | */ |
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30 | public interface Predicate<E> { |
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31 | ||
32 | /** |
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33 | * Evaluates the predicate on the message exchange and returns true if this |
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34 | * exchange matches the predicate |
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35 | * |
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36 | * @param exchange the message exchange |
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37 | * @return true if the predicate matches |
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38 | */ |
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39 | boolean matches(E exchange); |
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40 | ||
41 | /** |
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42 | * Allows this predicate to be used nicely in testing to generate a nicely |
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43 | * formatted exception and message if this predicate does not match for the |
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44 | * given exchange. |
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45 | * |
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46 | * @param text the description to use in the exception message |
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47 | * @param exchange the exchange to evaluate the expression on |
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48 | * @throws AssertionError if the predicate does not match |
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49 | */ |
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50 | void assertMatches(String text, E exchange) throws AssertionError; |
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51 | ||
52 | } |