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| org.apache.commons.jelly.tags.core.BaseClassLoaderTag |
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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.TagSupport; |
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| 19 | import org.apache.commons.jelly.util.ClassLoaderUtils; |
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| 20 | ||
| 21 | /** Abstract base tag providing {@link ClassLoader} support. |
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| 22 | * |
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| 23 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
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| 24 | * @author Rodney Waldhoff |
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| 25 | * @version $Revision: 155420 $ |
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| 26 | */ |
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| 27 | 1105 | public abstract class BaseClassLoaderTag extends TagSupport { |
| 28 | /** |
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| 29 | * The class loader to use for instantiating application objects. |
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| 30 | * If not specified, the context class loader, or the class loader |
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| 31 | * used to load XMLParser itself, is used, based on the value of the |
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| 32 | * <code>useContextClassLoader</code> variable. |
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| 33 | */ |
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| 34 | 1105 | protected ClassLoader classLoader = null; |
| 35 | ||
| 36 | /** |
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| 37 | * Do we want to use the Context ClassLoader when loading classes |
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| 38 | * for instantiating new objects? Default is <code>false</code>. |
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| 39 | */ |
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| 40 | 1105 | protected boolean useContextClassLoader = false; |
| 41 | ||
| 42 | /** |
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| 43 | * Return the class loader to be used for instantiating application objects |
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| 44 | * when required. This is determined based upon the following rules: |
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| 45 | * <ul> |
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| 46 | * <li>The class loader set by <code>setClassLoader()</code>, if any</li> |
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| 47 | * <li>The thread context class loader, if it exists and the |
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| 48 | * <code>useContextClassLoader</code> property is set to true</li> |
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| 49 | * <li>The class loader used to load the XMLParser class itself. |
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| 50 | * </ul> |
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| 51 | */ |
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| 52 | public ClassLoader getClassLoader() { |
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| 53 | 507 | return ClassLoaderUtils.getClassLoader(classLoader, useContextClassLoader, getClass()); |
| 54 | } |
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| 55 | ||
| 56 | /** |
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| 57 | * Set the class loader to be used for instantiating application objects |
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| 58 | * when required. |
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| 59 | * |
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| 60 | * @param classLoader The new class loader to use, or <code>null</code> |
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| 61 | * to revert to the standard rules |
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| 62 | */ |
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| 63 | public void setClassLoader(ClassLoader classLoader) { |
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| 64 | 0 | this.classLoader = classLoader; |
| 65 | 0 | } |
| 66 | ||
| 67 | /** |
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| 68 | * Return the boolean as to whether the context classloader should be used. |
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| 69 | */ |
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| 70 | public boolean getUseContextClassLoader() { |
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| 71 | 0 | return useContextClassLoader; |
| 72 | } |
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| 73 | ||
| 74 | /** |
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| 75 | * Determine whether to use the Context ClassLoader (the one found by |
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| 76 | * calling <code>Thread.currentThread().getContextClassLoader()</code>) |
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| 77 | * to resolve/load classes. If not |
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| 78 | * using Context ClassLoader, then the class-loading defaults to |
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| 79 | * using the calling-class' ClassLoader. |
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| 80 | * |
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| 81 | * @param boolean determines whether to use JellyContext ClassLoader. |
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| 82 | */ |
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| 83 | public void setUseContextClassLoader(boolean use) { |
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| 84 | 0 | useContextClassLoader = use; |
| 85 | 0 | } |
| 86 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |