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| org.apache.commons.jelly.tags.core.ExprTag |
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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.tags.core; |
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| 17 | ||
| 18 | import org.apache.commons.jelly.JellyTagException; |
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| 19 | import org.apache.commons.jelly.TagSupport; |
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| 20 | import org.apache.commons.jelly.XMLOutput; |
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| 21 | import org.apache.commons.jelly.expression.Expression; |
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| 22 | import org.xml.sax.SAXException; |
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| 23 | ||
| 24 | /** A tag which evaluates an expression |
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| 25 | * |
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| 26 | * @tag out |
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| 27 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
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| 28 | * @version $Revision: 155420 $ |
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| 29 | */ |
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| 30 | public class ExprTag extends TagSupport { |
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| 31 | ||
| 32 | /** The expression to evaluate. */ |
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| 33 | private Expression value; |
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| 34 | ||
| 35 | 13 | public ExprTag() { |
| 36 | 13 | } |
| 37 | ||
| 38 | // Tag interface |
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| 39 | //------------------------------------------------------------------------- |
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| 40 | public void doTag(XMLOutput output) throws JellyTagException { |
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| 41 | 39 | if (value != null) { |
| 42 | 39 | String text = value.evaluateAsString(context); |
| 43 | 39 | if (text != null) { |
| 44 | ||
| 45 | try { |
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| 46 | 39 | output.write(text); |
| 47 | } |
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| 48 | 0 | catch (SAXException e) { |
| 49 | 0 | throw new JellyTagException("could not write the XMLOutput",e); |
| 50 | 39 | } |
| 51 | } |
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| 52 | } |
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| 53 | 39 | } |
| 54 | ||
| 55 | // Properties |
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| 56 | //------------------------------------------------------------------------- |
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| 57 | ||
| 58 | /** |
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| 59 | * Sets the Jexl expression to evaluate. |
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| 60 | * |
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| 61 | * @required true |
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| 62 | */ |
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| 63 | public void setValue(Expression value) { |
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| 64 | 39 | this.value = value; |
| 65 | 39 | } |
| 66 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |