Subant Task

Subant Task Calls a given target for all defined sub-builds. |
Description
> Calls a given target for all defined sub-builds. This is an extension of ant for bulk project execution. This task must no be used outside of a `target` if it invokes the same build file it is part of.
> Use with directories
> subant can be used with directory sets to execute a build from different directories. 2 different options are offered : to run the same build file `/somepath/otherpath/mybuild.xml` with different base directories, use the genericantfile attribute if you want to run `directory1/mybuild.xml`, `directory2/mybuild.xml`, `....`, 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.
Parameters
> Attribute | Description | Type | Requirement
> antfile | Build file name, to use in conjunction with directories. Defaults to "build.xml". If `genericantfile` is set, this attribute is ignored. | String | Optional
> buildpath | Set the buildpath to be used to find sub-projects. | Path
> buildpathref | Buildpath to use, by reference. | Reference
> failonerror | Sets whether to fail with a build exception on error, or go on. | boolean
> genericantfile | Build file path, to use in conjunction with directories. Use `genericantfile`, in order to run the same build file with different basedirs. If this attribute is set, `antfile` is ignored. | File
> inheritall | Corresponds to `<ant>`'s `inheritall` attribute. | boolean
> inheritrefs | Corresponds to `<ant>`'s `inheritrefs` attribute. | boolean
> output | Corresponds to `<ant>`'s `output` attribute. | String
> target |  | String
Parameters as nested elements
> dirset (org.apache.tools.ant.types.DirSet)
> Adds a directory set to the implicit build path. 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!
> filelist (org.apache.tools.ant.types.FileList)
> Adds an ordered file list to the implicit build path. Note that contrary to file and directory sets, file lists can reference non-existent files or directories!
> fileset (org.apache.tools.ant.types.FileSet)
> Adds a file set to the implicit build path. 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!
> property (org.apache.tools.ant.taskdefs.Property)
> Corresponds to `<ant>`'s nested `<property>` element.
> propertyset (org.apache.tools.ant.types.PropertySet)
> Corresponds to `<ant>`'s nested `<propertyset>` element.
> buildpath (org.apache.tools.ant.types.Path)
> Creates a nested build path, and add it to the implicit build path.
> buildpathelement (org.apache.tools.ant.types.Path.PathElement)
> Creates a nested `<buildpathelement>`, and add it to the implicit build path.
Examples
>             <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>
> 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.
>               <subant target="">
>                  <propertyset>
>                       <propertyref prefix="toplevel"/>
>                       <mapper type="glob" from="foo*" to="bar*"/>
>                  </propertyset>
>                  <fileset dir="." includes="*/build.xml"/>
>               </subant>
> 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
>               <subant target="compile" genericantfile="/opt/project/build1.xml">
>                  <dirset dir="." includes="projects*"/>
>               </subant>
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
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