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51 lines
2.0 KiB
HTML
51 lines
2.0 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>Componentdef Task</title>
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</head>
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<body>
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<h2 id="componentdef">componentdef</h2>
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<h3>Description</h3>
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<p>Adds a component definition to the current project. A component definition is the same as
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a <a href="typedef.html">typedef</a> except:</p>
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<ol>
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<li>that it can only be used in other types or tasks that accept components (by having
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an <code>add()</code> method).</li>
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<li>multiple components may have the same name, provided they implement different interfaces.</li>
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</ol>
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<p>The purpose of this is to allow internal Apache Ant definitions to be made for tags
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like <samp>and</samp> or <samp>or</samp>.</p>
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<h3>Examples</h3>
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<p>Define two components with the same name <samp>or</samp>; one is a
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condition (see <a href="conditions.html">conditions</a>) and one is a
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selector (see <a href="../Types/selectors.html">selectors</a>).</p>
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<pre>
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<componentdef name="or" onerror="ignore"
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classname="com.apache.tools.ant.taskdefs.conditions.Or"/>
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<componentdef name="or" onerror="ignore"
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classname="com.apache.tools.ant.types.resources.selectors.Or"/></pre>
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</body>
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</html>
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