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90 lines
3.4 KiB
HTML
90 lines
3.4 KiB
HTML
<!DOCTYPE html>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<html lang="en">
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<head>
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<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
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<title>Whichresource Task</title>
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</head>
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<body>
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<h2 id="whichresource">Whichresource</h2>
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<h3>Description</h3>
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<p>Find a class or resource on the supplied classpath, or the system classpath if none is
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supplied. The named property is set if the item can be found. For example:</p>
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<pre><whichresource resource="/log4j.properties" property="log4j.url"/></pre>
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<h3>Parameters</h3>
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<table class="attr">
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<tr>
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<th scope="col">Attribute</th>
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<th scope="col">Description</th>
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<th scope="col">Required</th>
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</tr>
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<tr>
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<td>property</td>
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<td>The property to fill with the URL of the resource of class.</td>
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<td>Yes</td>
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</tr>
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<tr>
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<td>class</td>
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<td>The name of the class to look for.</td>
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<td rowspan="2">Exactly one of these</td>
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</tr>
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<tr>
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<td>resource</td>
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<td class="left">The name of the resource to look for.</td>
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</tr>
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<tr>
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<td>classpath</td>
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<td>The classpath to use when looking up <var>class</var> or <var>resource</var>.</td>
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<td>No</td>
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</tr>
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<tr>
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<td>classpathref</td>
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<td>The classpath to use, given as a <a href="../using.html#references">reference</a> to a
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path defined elsewhere. <em>Since Apache Ant 1.7.1</em>.</td>
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<td>No</td>
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</tr>
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</table>
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<h3>Parameters specified as nested elements</h3>
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<h4>classpath</h4>
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<p><code>Whichresource</code>'s <var>classpath</var> attribute is
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a <a href="../using.html#path">path-like structure</a> and can also be set via a
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nested <code><classpath></code> element.</p>
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<h3>Examples</h3>
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<p>The following shows using a classpath reference.</p>
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<pre>
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<path id="bsf.classpath">
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<fileset dir="${user.home}/lang/bsf" includes="*.jar"/>
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</path>
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<whichresource property="bsf.class.location"
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class="org.apache.bsf.BSFManager"
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classpathref="bsf.classpath"/>
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<echo>${bsf.class.location}</echo></pre>
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<p>The following shows using a nested classpath.</p>
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<pre>
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<whichresource property="ant-contrib.antlib.location"
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resource="net/sf/antcontrib/antlib.xml">
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<classpath>
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<path path="f:/testing/ant-contrib/target/ant-contrib.jar"/>
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</classpath>
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</whichresource>
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<echo>${ant-contrib.antlib.location}</echo></pre>
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</body>
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</html>
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