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Topic: Ant -- Target |
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| Ant -- Target |
A target is a container of tasks that cooperate to reach a desired state during the build process.
<target name="A"/>
<target name="B" depends="A"/>
<target name="C" depends="B"/>
<target name="D" depends="C,B,A"/>
Call-Graph: A --> B --> C --> D
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| If/unless Conditional Target |
A target has the ability to perform its execution if (or unless) a property has been set.
<target name="build-module-A" if="module-A-present"/>
If the module-A-present property is set (to any value, e.g. false), the target will be run.
<target name="build-own-fake-module-A" unless="module-A-present"/>
If the module-A-present property is set (again, to any value), the target will not be run.
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ant
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| Want more controls? |
<target name="myTarget" depends="myTarget.check" if="myTarget.run">
<echo>Files foo.txt and bar.txt are present.</echo>
</target>
<target name="myTarget.check">
<condition property="myTarget.run">
<and>
<available file="foo.txt"/>
<available file="bar.txt"/>
</and>
</condition>
</target>
Call-Graph: myTarget.check --> maybe(myTarget)
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| One more example |
<target name="local_config">
<condition property="local.config.properties" value="../conf/${local.config}">
<and>
<isset property="local.config"/>
<not>
<equals arg1="" arg2="${local.config}"/>
</not>
</and>
</condition>
</target>
<target name="echo_local_config" depends="local_config" if="local.config.properties">
<echo message="Using local config: ${local.config.properties}"/>
</target>
Output:
Buildfile: C:\temp\project\build.xml
local_config:
echo_local_config:
[echo] Using local config: ../conf/config.properties-demo
BUILD SUCCESSFUL
Total time: 1 second
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posted on: 08/11/2010 06:16:47 PM
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