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| 3 | <head>
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| 4 | <meta http-equiv="Content-Language" content="en-us">
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| 5 | <title>AntCall Task</title>
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| 6 | <link rel="stylesheet" type="text/css" href="../stylesheets/antmanual.css">
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| 7 | </head>
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| 8 |
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| 9 | <body>
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| 10 |
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| 11 | <h2><a name="antcall">AntCall</a></h2>
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| 12 | <h3>Description</h3>
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| 13 |
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| 14 | <p>Call another target within the same build-file optionally
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| 15 | specifying some properties (param's in this context). <strong>This
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| 16 | task must no be used outside of a <code>target</code>.</strong></p>
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| 17 |
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| 18 | <p>By default, all of the properties of the current project will be
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| 19 | available in the new project. Alternatively, you can
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| 20 | set the <i>inheritAll</i> attribute to <code>false</code> and only
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| 21 | "user" properties (i.e., those passed on the command-line)
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| 22 | will be passed to the new project. In either case, the set of
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| 23 | properties passed to the new project will override the properties that
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| 24 | are set in the new project (See also the <a href="property.html">property task</a>).</p>
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| 25 | <p>You can also set properties in the new project from the old project
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| 26 | by using nested param tags. These properties are always passed
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| 27 | to the new project and any project created in that project
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| 28 | regardless of the setting of <i>inheritAll</i>. This allows you to
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| 29 | parameterize your subprojects. Properties defined on the command line
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| 30 | can not be overridden by nested <param> elements.</p>
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| 31 |
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| 32 | <p>Nested <a href="#reference"><i><reference></i></a> elements can
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| 33 | be used to copy references from the calling project to the new
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| 34 | project, optionally under a different id. References taken from
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| 35 | nested elements will override existing references that have been
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| 36 | defined outside of targets in the new project - but not those defined
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| 37 | inside of targets.</p>
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| 38 |
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| 39 | <p>
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| 40 | When a target is invoked by antcall, all of its dependent targets will
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| 41 | also be called within the context of any new parameters. For example. if
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| 42 | the target "doSomethingElse" depended on the target "init", then the
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| 43 | <i>antcall</i> of "doSomethingElse" will call "init" during the call.
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| 44 | Of course, any properties defined in the antcall task or inherited from the calling target
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| 45 | will be fixed and not overridable in the init task -or indeed in the "doSomethingElse" task.
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| 46 | </p>
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| 47 |
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| 48 | <p>If the build file changes after you've started the build, the
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| 49 | behavior of this task is undefined.</p>
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| 50 |
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| 51 | <h3>Parameters</h3>
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| 52 | <table border="1" cellpadding="2" cellspacing="0">
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| 53 | <tr>
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| 54 | <td valign="top"><b>Attribute</b></td>
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| 55 | <td valign="top"><b>Description</b></td>
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| 56 | <td align="center" valign="top"><b>Required</b></td>
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| 57 | </tr>
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| 58 | <tr>
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| 59 | <td valign="top">target</td>
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| 60 | <td valign="top">The target to execute.</td>
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| 61 | <td valign="top" align="center">Yes</td>
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| 62 | </tr>
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| 63 | <tr>
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| 64 | <td valign="top">inheritAll</td>
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| 65 | <td valign="top">If <code>true</code>, pass all properties to the new Ant
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| 66 | project. Defaults to <code>true</code>.
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| 67 | </td>
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| 68 | <td align="center" valign="top">No</td>
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| 69 | </tr>
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| 70 | <tr>
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| 71 | <td valign="top">inheritRefs</td>
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| 72 | <td valign="top">If <code>true</code>, pass all references to the
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| 73 | new Ant project. Defaults to <code>false</code>.</td>
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| 74 | <td align="center" valign="top">No</td>
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| 75 | </tr>
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| 76 | </table>
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| 77 |
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| 78 | <h3>Note on <code>inheritRefs</code></h3>
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| 79 |
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| 80 | <p><code><antcall></code> will not override existing references,
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| 81 | even if you set <code>inheritRefs</code> to true. As the called build
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| 82 | files is the same build file as the calling one, this means it will
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| 83 | not override any reference set via an <code>id</code> attribute at
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| 84 | all. The only references that can be inherited by the child project
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| 85 | are those defined by nested <code><reference></code> elements or
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| 86 | references defined by tasks directly (not using the <code>id</code>
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| 87 | attribute).</p>
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| 88 |
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| 89 | <h3>Parameters specified as nested elements</h3>
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| 90 | <h4>param</h4>
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| 91 | <p>Specifies the properties to set before running the specified target. See <a
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| 92 | href="property.html">property</a> for usage guidelines.</p>
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| 93 |
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| 94 | <a name="reference"></a><h4>reference</h4>
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| 95 | <p>Used to choose references that shall be copied into the new project,
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| 96 | optionally changing their id.</p>
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| 97 |
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| 98 | <table border="1" cellpadding="2" cellspacing="0">
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| 99 | <tr>
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| 100 | <td valign="top"><b>Attribute</b></td>
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| 101 | <td valign="top"><b>Description</b></td>
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| 102 | <td align="center" valign="top"><b>Required</b></td>
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| 103 | </tr>
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| 104 | <tr>
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| 105 | <td valign="top">refid</td>
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| 106 | <td valign="top">The id of the reference in the calling project.</td>
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| 107 | <td valign="top" align="center">Yes</td>
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| 108 | </tr>
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| 109 | <tr>
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| 110 | <td valign="top">torefid</td>
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| 111 | <td valign="top">The id of the reference in the new project.</td>
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| 112 | <td valign="top" align="center">No, defaults to the value of refid.</td>
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| 113 | </tr>
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| 114 | </table>
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| 115 |
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| 116 | <h4>propertyset</h4>
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| 117 |
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| 118 | <p>You can specify a set of properties to be copied into the new
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| 119 | project with <a
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| 120 | href="../CoreTypes/propertyset.html">propertyset</a>s.</p>
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| 121 |
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| 122 | <p><em>since Ant 1.6</em>.</p>
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| 123 |
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| 124 | <h3>Examples</h3>
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| 125 | <pre>
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| 126 | <target name="default">
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| 127 | <antcall target="doSomethingElse">
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| 128 | <param name="param1" value="value"/>
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| 129 | </antcall>
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| 130 | </target>
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| 131 |
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| 132 | <target name="doSomethingElse">
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| 133 | <echo message="param1=${param1}"/>
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| 134 | </target>
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| 135 | </pre>
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| 136 | <p>Will run the target 'doSomethingElse' and echo 'param1=value'.</p>
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| 137 |
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| 138 | <pre>
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| 139 | <antcall ... >
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| 140 | <reference refid="path1" torefid="path2"/>
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| 141 | </antcall>
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| 142 | </pre>
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| 143 |
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| 144 | <p>will copy the parent's definition of <code>path1</code> into the
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| 145 | new project using the id <code>path2</code>.</p>
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| 146 |
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| 147 | <hr><p align="center">Copyright © 2000-2004 The Apache Software Foundation. All rights
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| 148 | Reserved.</p>
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| 149 |
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| 150 | </body>
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| 151 | </html>
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