Classes in this File | Line Coverage | Branch Coverage | Complexity | |||||||
ExpressionHelper |
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| 0.0;0 |
1 | /** |
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2 | * |
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3 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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4 | * contributor license agreements. See the NOTICE file distributed with |
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5 | * this work for additional information regarding copyright ownership. |
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6 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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7 | * (the "License"); you may not use this file except in compliance with |
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8 | * the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | package org.apache.camel.util; |
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19 | ||
20 | import org.apache.camel.Exchange; |
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21 | import org.apache.camel.Expression; |
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22 | ||
23 | /** |
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24 | * A collection of helper methods for working with expressions. |
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25 | * |
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26 | * @version $Revision: 1.1 $ |
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27 | */ |
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28 | 0 | public class ExpressionHelper { |
29 | ||
30 | /** |
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31 | * Evaluates the given expression on the exchange as a String value |
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32 | * |
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33 | * @param expression the expression to evaluate |
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34 | * @param exchange the exchange to use to evaluate the expression |
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35 | * @return the result of the evaluation as a string. |
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36 | */ |
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37 | public static <E extends Exchange> String evaluateAsString(Expression<E> expression, E exchange) { |
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38 | 6 | return evaluateAsType(expression, exchange, String.class); |
39 | } |
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40 | ||
41 | /** |
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42 | * Evaluates the given expression on the exchange, converting the result to the given type |
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43 | * |
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44 | * @param expression the expression to evaluate |
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45 | * @param exchange the exchange to use to evaluate the expression |
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46 | * @param resultType the type of the result that is required |
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47 | * @return the result of the evaluation as the specified type. |
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48 | */ |
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49 | public static <T, E extends Exchange> T evaluateAsType(Expression<E> expression, E exchange, Class<T> resultType) { |
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50 | 6 | Object value = expression.evaluate(exchange); |
51 | 6 | return exchange.getContext().getTypeConverter().convertTo(resultType, value); |
52 | } |
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53 | } |