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Task</title>
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<font size="+3" face="arial,helvetica,sanserif"><strong>Subant
Task</strong></font>
<br><font face="arial,helvetica,sanserif">Calls a given target for all defined sub-builds.</font>
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<a href="http://ant.apache.org/">
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<a name="description">
<strong>Description</strong></a></font>
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<p>
Calls a given target for all defined sub-builds.
This is an extension
of ant for bulk project execution.
<strong>This task must no be used outside of a
<code>target</code> if it invokes the same build file it is
part of.</strong>
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<a name="Use with directories">
<strong>Use with directories</strong></a></font>
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<p>
subant can be used with directory sets to execute a build from different directories.
2 different options are offered :
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<ul>
<li>
to run the same build file <code>/somepath/otherpath/mybuild.xml</code>
with different base directories, use the genericantfile attribute
</li>
<li>if you want to run <code>directory1/mybuild.xml</code>, <code>directory2/mybuild.xml</code>, <code>....</code>,
use the antfile attribute. The subant task does not set the base directory for you in this case, because you can specify it in each build file.
</li>
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<a name="attributes">
<strong>Parameters</strong></a></font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif"><b>Attribute</b></font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif"><b>Description</b></font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif"><b>Type</b></font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif"><b>Requirement</b></font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">antfile</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Build file name, to use in conjunction with directories.<br/> Defaults to "build.xml".<br/> If <code>genericantfile</code> is set, this attribute is ignored.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">String</font>
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<td bgcolor="#eeeeee" valign="top" align="left" rowspan="10">
<font color="#000000" size="-1" face="arial,helvetica,sanserif">Optional</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">buildpath</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Set the buildpath to be used to find sub-projects.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Path</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">buildpathref</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Buildpath to use, by reference.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Reference</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">failonerror</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Sets whether to fail with a build exception on error, or go on.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">boolean</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">genericantfile</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Build file path, to use in conjunction with directories.<br/> Use <code>genericantfile</code>, in order to run the same build file with different basedirs.<br/> If this attribute is set, <code>antfile</code> is ignored.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">File</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">inheritall</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Corresponds to <code><ant></code>'s <code>inheritall</code> attribute.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">boolean</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">inheritrefs</font>
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<td bgcolor="#eeeeee" valign="top" align="left">
<font color="#000000" size="-1" face="arial,helvetica,sanserif">Corresponds to <code><ant></code>'s <code>inheritrefs</code> attribute.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">boolean</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">output</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">Corresponds to <code><ant></code>'s <code>output</code> attribute.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">String</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">target</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif"></font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">String</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">verbose</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">
Enable/ disable log messages showing when each sub-build path is entered/ exited.
The default value is false.</font>
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<font color="#000000" size="-1" face="arial,helvetica,sanserif">boolean</font>
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<a name="elements">
<strong>Parameters as nested elements</strong></a></font>
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<strong>dirset</strong> (org.apache.tools.ant.types.DirSet)</font>
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Adds a directory set to the implicit build path. <p> <em>Note that the directories will be added to the build path in no particular order, so if order is significant, one should use a file list instead!</em>
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<strong>filelist</strong> (org.apache.tools.ant.types.FileList)</font>
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Adds an ordered file list to the implicit build path. <p> <em>Note that contrary to file and directory sets, file lists can reference non-existent files or directories!</em>
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<strong>fileset</strong> (org.apache.tools.ant.types.FileSet)</font>
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Adds a file set to the implicit build path. <p> <em>Note that the directories will be added to the build path in no particular order, so if order is significant, one should use a file list instead!</em>
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<strong>property</strong> (org.apache.tools.ant.taskdefs.Property)</font>
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Corresponds to <code><ant></code>'s nested <code><property></code> element.
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<strong>propertyset</strong> (org.apache.tools.ant.types.PropertySet)</font>
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Corresponds to <code><ant></code>'s nested <code><propertyset></code> element.
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<strong>buildpath</strong> (org.apache.tools.ant.types.Path)</font>
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Creates a nested build path, and add it to the implicit build path.
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<strong>buildpathelement</strong> (org.apache.tools.ant.types.Path.PathElement)</font>
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Creates a nested <code><buildpathelement></code>, and add it to the implicit build path.
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<a name="examples">
<strong>Examples</strong></a></font>
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<pre>
<project name="subant" default="subant1">
<property name="build.dir" value="subant.build"/>
<target name="subant1">
<subant target="">
<property name="build.dir" value="subant1.build"/>
<property name="not.overloaded" value="not.overloaded"/>
<fileset dir="." includes="*/build.xml"/>
</subant>
</target>
</project>
</pre>
<p>
this snippet build file will run ant in each subdirectory of the project directory,
where a file called build.xml can be found.
The property build.dir will have the value subant1.build in the ant projects called by subant.
</p>
<pre>
<subant target="">
<propertyset>
<propertyref prefix="toplevel"/>
<mapper type="glob" from="foo*" to="bar*"/>
</propertyset>
<fileset dir="." includes="*/build.xml"/>
</subant>
</pre>
<p>
this snippet build file will run ant in each subdirectory of the project directory,
where a file called build.xml can be found.
All properties whose name starts with "foo" are passed, their names are changed to start with "bar" instead
</p>
<pre>
<subant target="compile" genericantfile="/opt/project/build1.xml">
<dirset dir="." includes="projects*"/>
</subant>
</pre>
<p>
assuming the subdirs of the project dir are called projects1, projects2, projects3
this snippet will execute the compile target of /opt/project/build1.xml,
setting the basedir to projects1, projects2, projects3
</p>
<!-- manually written -->
<p>Now a little more complex - but useful - scenario. Assume that we have
a directory structure like this:</p>
<pre>
root
| common.xml
| build.xml
|
+-- modules
+-- modA
| +-- src
+-- modB
+-- src
<u><b>common.xml:</b></u><br>
<project>
<property name="src.dir" value="src"/>
<property name="build.dir" value="build"/>
<property name="classes.dir" value="${build.dir}/classes"/>
<target name="compile">
<mkdir dir="${classes.dir}"/>
<javac srcdir="${src.dir}" destdir="${classes.dir}"/>
</target>
<!-- more targets -->
</project>
<u><b>build.xml:</b></u><br>
<project>
<macrodef name="iterate">
<attribute name="target"/>
<sequential>
<subant target="@{target}">
<fileset dir="modules" includes="*/build.xml"/>
</subant>
</sequential>
</macrodef>
<target name="compile">
<iterate target="compile"/>
</target>
<!-- more targets -->
</project>
<u><b>modules/modA/build.xml:</b></u><br>
<project name="modA">
<import file="../../common.xml"/>
</project>
</pre>
<p>This results in very small buildfiles in the modules, maintainable
buildfile (common.xml) and a clear project structure. Additionally
the root buildfile is capable to run the whole build over all
modules.
</p>
<!-- manually written -->
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