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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. |