Hi.
My IDE generates an Ant script with the run-deploy and run-undeploy targets.
They internally use the standard <get> task, but they don't check the outcome
and sometimes return false positive.
The build is customizable by editing the file build.xml that includes this
generated project file. I want to replace <get> with a macro that additionally
greps the http response body for the success message.
The main problem is: when the macro tries to call the real <get>, it either
fails with a stack overflow or with the message: "antcall task calling its own
parent target". I thought I could fix it with name spaces, but it was too
complex for me. My current workaround is to re-import
org.apache.tools.ant.taskdefs.Get with a different task name.
There are some other issues with overriding <get> with a macrodef: the
generated script calls get either with or without a password, but a macro
cannot pass unknown attributes to the wrapped tasks. On the other hand,
<presetdef> can pass them, but it won't let me add the additional checker task.
Macro attributes with default values don't work for the the "password" property
of <get>, because null and empty string treated differently. There's no way to
avoid calling the property setter, if the property has a default value in the
macro instance. My workaround is to have two <real-get> elements in the custom
script: with and without the password.
This leads to another problem: to invoke one of the <real-get> tasks
conditionally I have to use <antcall> and because of that I can't support the
optional children elements of <get>.
<?xml version="1.0" encoding="utf-8"?>
<project default="build" >
<taskdef name="real-get"
classname="org.apache.tools.ant.taskdefs.Get" />
<macrodef name="get">
<attribute name="src"/>
<attribute name="dest"/>
<attribute name="username" default="NOT-SET" />
<attribute name="password" default="NOT-SET" />
<sequential>
<condition property="mymacro.no.creds">
<and>
<equals arg1="@{username}"
arg2="NOT-SET"/>
<equals arg1="@{password}"
arg2="NOT-SET"/>
</and>
</condition>
<property name="mymacro.src" value="@{src}"/>
<property name="mymacro.dest" value="@{dest}"/>
<property name="mymacro.username"
value="@{username}"/>
<property name="mymacro.password"
value="@{password}"/>
<antcall target="-get-without-creds"/>
<antcall target="-get-with-creds"/>
<!--
TODO: check download result and optionally fail
-->
<echo message="some additional check"/>
</sequential>
</macrodef>
<target name="-get-without-creds" if="mymacro.no.creds">
<real-get src="${mymacro.src}" dest="${mymacro.dest}" />
</target>
<target name="-get-with-creds" unless="mymacro.no.creds">
<real-get src="${mymacro.src}" dest="${mymacro.dest}"
username="${mymacro.username}" password="${mymacro.password}" />
</target>
<target name="build">
<get src="http://www.calife.com/HTML/test.php";
dest="out.html"/>
</target>
</project>
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