CODEWITHSUNDEEP
javaantant-contrib
sAm
sAm

Reputation: 321

Ant else condition execution

I am trying to print some message in Ant depending on some condition as follow:

<if>
    <equals arg1="${docs.present}" arg2="true"/>
    <then>
    </then>
    <else>
        <echo message="No docss found!"/>
    </else>
</if>

But as you see, if docs.present property is set to 'true' then only I want to execute only else part. There is nothing to execute in if part. How can I achieve this?

Upvotes: 1

Views: 256

Answers (3)

Mark O&#39;Connor
Mark O&#39;Connor

Reputation: 78011

A native Ant solution would be to use conditional task execution:

<project name="demo" default="run">

   <available file="mydoc.txt" property="doc.present"/>

   <target name="run" unless="doc.present">
     <echo message="No docs found"/>
   </target>

</project>

The "if" task is not part of standard Ant.

Upvotes: 0

Vimal Bera
Vimal Bera

Reputation: 10497

You can use echo in your if condition instead of else as below :

<if>
    <equals arg1="${docs.present}" arg2="false"/>
    <then>
          <echo message="No docss found!"/>
    </then>
</if>

Upvotes: 1

pushpavanthar
pushpavanthar

Reputation: 869

Below is the typical example of writing if, else if and else conditions in ant.

<if>
    <equals arg1="${condition}" arg2="true"/>
    <then>
        <copy file="${some.dir}/file" todir="${another.dir}"/>
    </then>
    <elseif>
        <equals arg1="${condition}" arg2="false"/>
        <then>
            <copy file="${some.dir}/differentFile" todir="${another.dir}"/>
        </then>
    </elseif>
    <else>
        <echo message="Condition was neither true nor false"/>
    </else>
</if>

In your case you can have the task to be performed inside the then tag itself and remove else tag if you have nothing to be performed there.

<if>
    <equals arg1="${docs.present}" arg2="false"/>
    <then>
        <echo message="No docss found!"/>
    </then>
</if>

Upvotes: 0

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