That�s the common check-before-execution-behaviour.
<target name="check">
<uptodate property="mustdo" .../>
</>
<target name="mywork" if="mustdo" depends="check"/>
Jan
> -----Original Message-----
> From: Eliot Stock [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, April 20, 2004 11:12 AM
> To: '[EMAIL PROTECTED]'
> Subject: running a target only when dependset indicates to
>
>
> Hello.
>
> I have a target called 'bind' in my build which uses xjc
> (JAXB .xsd -> .java
> compiler) to compile XML schema files into Java sources.
> Currently, 'bind'
> runs on every run of any target that depends on it - ant
> doesn't know when
> the target is up to date. I want it to run only when the
> source xsd files
> are newer than the generated .java files.
>
> At first, the dependset tag looked promising, but I now
> realise that adding
> a dependset will have ant run the target when the dependset
> indicates it
> should *in addition* to the other times it's running (which
> is always). What
> I want is a dependset that has its enclosing target run *only* when it
> indicates.
>
> Is this possible?
>
> Cheers,
>
> Eliot Stock
> syzygy.net
> +44 20 7598 9910
>
> <target name="bind" depends="init">
>
> <!-- Only re-run this target when the xsd files are more
> recent than the
> generated sources (this is NOT the effect this
> dependset has) -->
> <dependset>
> <srcfilelist dir="schema" files="*.xsd" />
> <srcfilelist dir="schema" files="binding.xjb" />
> <targetfileset dir="gen-src" includes = "**/*.java" />
> </dependset>
>
> <echo message="Compiling non-generated sources required
> for binding..."
> />
> <javac destdir="classes" srcdir="src" debug="on">
> <include
> name="uk/co/airmiles/web/ypsilon/YpsilonJAXBCalendarConverter.java" />
> <classpath refid="classpath" />
> </javac>
>
> <taskdef name="xjc" classname="com.sun.tools.xjc.XJCTask">
> <classpath refid="classpath" />
> </taskdef>
>
> <echo message="Generating Java sources from XSD schema
> files..." />
> <xjc target="gen-src"
> package="uk.co.airmiles.web.ypsilon"
> binding="schema/binding.xjb">
> <schema file="schema/errorResponse.xsd" />
> <schema file="schema/fareRequest.xsd" />
> <schema file="schema/availRequest.xsd" />
> <schema file="schema/combined.xsd" />
> <schema file="schema/bookingRequest.xsd" />
> </xjc>
>
> <echo message="Generating Javadoc from generated sources..." />
> <mkdir dir="docs/api" />
> <javadoc packagenames="uk.co.airmiles.web.ypsilon"
> sourcepath="gen-src"
> destdir="docs/api"
> windowtitle="Generated Interfaces for Ypsilon">
> <classpath refid="classpath" />
> </javadoc>
> </target>
>
>
>
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