Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||
Expression |
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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 | * An <a href="http://activemq.apache.org/camel/expression.html">expression</a> |
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21 | * provides a plugin strategy for evaluating expressions on a message exchange to support things like |
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22 | * <a href="http://activemq.apache.org/camel/scripting-languages.html">scripting languages</a>, |
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23 | * <a href="http://activemq.apache.org/camel/xquery.html">XQuery</a> |
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24 | * or <a href="http://activemq.apache.org/camel/sql.html">SQL</a> as well |
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25 | * as any arbitrary Java expression. |
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26 | * |
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27 | * |
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28 | * @version $Revision: $ |
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29 | */ |
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30 | public interface Expression<E extends Exchange> { |
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31 | ||
32 | /** |
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33 | * Returns the value of the expression on the given exchange |
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34 | * |
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35 | * @param exchange the message exchange on which to evaluate the expression |
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36 | * @return the value of the expression |
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37 | */ |
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38 | Object evaluate(E exchange); |
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39 | } |