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Dennis C
Dennis C

Reputation: 24747

How to make ant target exclusive to each other?

In ANT, it is easy to set target dependency by using the attribute target.depends.

But how can I setup some target that they are exclusive to each other. So it will check the target combination before execute them?

Upvotes: 1

Views: 140

Answers (2)

Dennis C
Dennis C

Reputation: 24747

The best way to do exclusive that is very simple.

Just don't write them into same build.xml file but make a copy of it and modify two version accordingly.

Upvotes: 0

JB Nizet
JB Nizet

Reputation: 691775

You could make each of them define a common property, and be executed only if this property is not set yet :

<target name="a" unless="aOrBAlreadyRun">
    <property name="aOrBAlreadyRun" value="true"/>
    ...
</target>

<target name="b" unless="aOrBAlreadyRun">
    <property name="aOrBAlreadyRun" value="true"/>
    ...
</target>

See http://ant.apache.org/manual/targets.html for explanations.

EDIT :

If you want the build to fail when both targets are executed, then fail if the property is already set :

<target name="a">
    <fail if="aOrBAlreadyRun" 
          message="You can't have a and b executed in the same build"/>
    <property name="aOrBAlreadyRun" value="true"/>
    ...
</target>

<target name="b">
    <fail if="aOrBAlreadyRun" 
          message="You can't have a and b executed in the same build"/>
    <property name="aOrBAlreadyRun" value="true"/>
    ...
</target>

Upvotes: 4

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