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<title>PropertySet Type</title>
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<h2><a name="propertyset">PropertySet</a></h2>
<p><em>Since Ant 1.6</em></p>
<p>Groups a set of properties to be used by reference in a task that
supports this.</p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
<td valign="top"><b>Attribute</b></td>
<td valign="top"><b>Description</b></td>
<td align="center" valign="top"><b>Required</b></td>
</tr>
<tr>
<td valign="top">dynamic</td>
<td valign="top">Whether to reevaluate the set everytime the set
is used. Default is &quot;<code>true</code>&quot;.</td>
<td valign="top" align="center">No</td>
</tr>
<tr>
<td valign="top">negate</td>
<td valign="top">Whether to negate results. If
&quot;<code>true</code>&quot;, all properties <i>not</i>
selected by nested elements will be returned. Default is
&quot;<code>false</code>&quot;. <em>Since Ant 1.6.2</em>
</td>
<td valign="top" align="center">No</td>
</tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>propertyref</h4>
<p>Selects properties from the current project to be included in the
set.</p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
<td valign="top"><b>Attribute</b></td>
<td valign="top"><b>Description</b></td>
<td align="center" valign="top"><b>Required</b></td>
</tr>
<tr>
<td valign="top">name</td>
<td valign="top">Select the property with the given name.</td>
<td align="center" valign="top" rowspan="4">Exactly one of these.</td>
</tr>
<tr>
<td valign="top">prefix</td>
<td valign="top">Select the properties whose name starts with the
given string.</td>
</tr>
<tr>
<td valign="top">regex</td>
<td valign="top">Select the properties that match the given
regular expression. Similar to <a
href="mapper.html#regexp-mapper">regexp type mappers</a>, this
requires a supported regular expression library.</td>
</tr>
<tr>
<td valign="top">builtin</td>
<td valign="top">Selects a builtin set of properties. Valid
values for this attribute are <code>all</code> for all Ant
properties, <code>system</code> for the system properties and
<code>commandline</code> for all properties specified on the
command line when invoking Ant (plus a number of special
internal Ant properties).</td>
</tr>
</table>
<h4>propertyset</h4>
<p>A <code>propertyset</code> can be used as the set union of more
<code>propertyset</code>s.</p>
<p>For example:</p>
<blockquote><pre>
&lt;propertyset id=&quot;properties-starting-with-foo&quot;&gt;
&lt;propertyref prefix=&quot;foo&quot;/&gt;
&lt;/propertyset&gt;
&lt;propertyset id=&quot;properties-starting-with-bar&quot;&gt;
&lt;propertyref prefix=&quot;bar&quot;/&gt;
&lt;/propertyset&gt;
&lt;propertyset id=&quot;my-set&quot;&gt;
&lt;propertyset refid=&quot;properties-starting-with-foo&quot;/&gt;
&lt;propertyset refid=&quot;properties-starting-with-bar&quot;/&gt;
&lt;/propertyset&gt;
</pre></blockquote>
<p>collects all properties whose name starts with either
&quot;foo&quot; or &quot;bar&quot; in the set named
&quot;my-set&quot;.</p>
<h4>mapper</h4>
<p>A <a href="mapper.html">mapper</a> - at maximum one mapper can be
specified. The mapper is used to change the names of the property
keys, for example:
<blockquote><pre>
&lt;propertyset id=&quot;properties-starting-with-foo&quot;&gt;
&lt;propertyref prefix=&quot;foo&quot;/&gt;
&lt;mapper type=&quot;glob&quot; from=&quot;foo*&quot; to=&quot;bar*&quot;/&gt;
&lt;/propertyset&gt;
</pre></blockquote>
<p>collects all properties whose name starts with &quot;foo&quot;, but
changes the names to start with &quot;bar&quot; instead.</p>
<p>If supplied, the nested mapper will be applied
subsequent to any negation of matched properties.</p>
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