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org.apache.commons.jelly.impl.ExpressionScript |
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1 | /* |
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2 | * Copyright 2002,2004 The Apache Software Foundation. |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package org.apache.commons.jelly.impl; |
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17 | ||
18 | import org.apache.commons.jelly.JellyContext; |
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19 | import org.apache.commons.jelly.JellyTagException; |
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20 | import org.apache.commons.jelly.Script; |
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21 | import org.apache.commons.jelly.XMLOutput; |
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22 | import org.apache.commons.jelly.expression.Expression; |
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23 | ||
24 | import org.xml.sax.SAXException; |
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25 | ||
26 | /** |
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27 | * <p><code>ExpressionScript</code> outputs the value of an expression as text.</p> |
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28 | * |
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29 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
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30 | * @version $Revision: 155420 $ |
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31 | */ |
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32 | public class ExpressionScript implements Script { |
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33 | ||
34 | /** the expression evaluated as a String and output by this script */ |
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35 | private Expression expression; |
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36 | ||
37 | 0 | public ExpressionScript() { |
38 | 0 | } |
39 | ||
40 | 429 | public ExpressionScript(Expression expression) { |
41 | 429 | this.expression = expression; |
42 | 429 | } |
43 | ||
44 | public String toString() { |
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45 | 0 | return super.toString() + "[expression=" + expression + "]"; |
46 | } |
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47 | ||
48 | /** @return the expression evaluated as a String and output by this script */ |
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49 | public Expression getExpression() { |
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50 | 0 | return expression; |
51 | } |
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52 | ||
53 | /** Sets the expression evaluated as a String and output by this script */ |
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54 | public void setExpression(Expression expression) { |
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55 | 0 | this.expression = expression; |
56 | 0 | } |
57 | ||
58 | // Script interface |
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59 | //------------------------------------------------------------------------- |
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60 | public Script compile() { |
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61 | 429 | return this; |
62 | } |
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63 | ||
64 | /** Evaluates the body of a tag */ |
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65 | public void run(JellyContext context, XMLOutput output) throws JellyTagException { |
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66 | 533 | Object result = expression.evaluate(context); |
67 | 533 | if ( result != null ) { |
68 | ||
69 | try { |
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70 | 533 | output.objectData(result); |
71 | 0 | } catch (SAXException e) { |
72 | 0 | throw new JellyTagException("Could not write to XMLOutput",e); |
73 | 533 | } |
74 | ||
75 | } |
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76 | 533 | } |
77 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |