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Subject: RE: calling ant from java program
Date: Mon, 30 Aug 2004 14:33:50 -0400
Message-ID: <81E189F07E3537408C1AE7BA1C93FD3F01CDCBCF@EXNJMB30.nam.nsroot.net>
Thread-Topic: calling ant from java program
Thread-Index: AcSOviZvbZ2/DLztRiW8tu21MHdDpAAAAOVg
From: "Velagapudi, Murali" <murali.velagapudi@citigroup.com>
To: "Ant Users List" <user@ant.apache.org>

Hi,

 Antoine thx for reply,i had kept both commons-net.jar and =
jakarta-oro.jar files in ant/lib=20
,but when i call from java program it does not work(it works if =
build.xml didn't have any optional task)
when i run from command it works well and send the file,
but the problem is when i run this using the below java program it is =
not able to recognize ftp task=20
(not only ftp also telnet,script etc say optional tasks)
it says could not find ftp task i tried to run the program using=20
java -cp commons-net.jar;jakarta-oro.jar ..but still it is not taking =
up..
is there any thing i need to keep in class path ?.

here is the snippet i have been working on

<?xml version=3D"1.0" encoding=3D"UTF-8"?>
<project basedir=3D"." default=3D"ftp" name=3D"build">=20
   =20
<target name=3D"ftp">=20
  <ftp server=3D"server.com"
       remotedir=3D"/root/temp"
       userid=3D"user"
       password=3D"pwd"
       separator=3D"/"
       verbose=3D"yes"
       binary=3D"yes"
  >
    <fileset dir=3D"c:\temp">
      <include name=3D"temp.txt"/>
    </fileset>
  </ftp>
</target> =20
   </project>


import org.apache.tools.ant.*;

import java.io.*;
import java.util.*;


public class AntRunner
{
     private Project project;

     public void init(String _buildFile, String _baseDir) throws
Exception
     {
         project =3D new Project();
         try { project.init(); }
         catch (BuildException e)
             { throw new Exception("The default task list could not be =
loaded."); }

         // Set the base directory. If none is given, "." is used.
         if (_baseDir =3D=3D null) _baseDir=3Dnew String(".");
         try { project.setBasedir(_baseDir); }
         catch (BuildException e)
             { throw new Exception("The given basedir doesn't exist, or =
isn't a directory."); }
  =20
         if (_buildFile =3D=3D null) _buildFile=3Dnew =
String("build.xml");
         try { ProjectHelper.getProjectHelper().parse(project, new
File(_buildFile)); }
         catch (BuildException e)
             { throw new Exception("Configuration file "+_buildFile+" is =
invalid, or cannot be read."); }
     }


     public void runTarget(String _target) throws Exception
     {
         // Test if the project exists
         if (project =3D=3D null) throw new Exception("No target can be =
launched because the project has not been initialized. Please call the =
'init' method first !");

         // If no target is specified, run the default one.
         if (_target =3D=3D null) _target =3D =
project.getDefaultTarget();

         // Run the target
         try { project.executeTarget(_target);  }
         catch (BuildException e)
         { throw new Exception(e.getMessage()); }
     }

         public static void main(String args[])
	     {
	 		try{

	 		=09
	 			AntRunner ar=3Dnew AntRunner();	 		=09
	 			ar.init("build.xml",".");	 		=09
	 			ar.runTarget(null);

	 		}catch(Exception e)
	 		{
	 			e.printStackTrace();
	 		}
	}

}

thanks
Murali


-----Original Message-----
From: Antoine Levy-Lambert [mailto:antoine@gmx.de]
Sent: Monday, August 30, 2004 2:20 PM
To: Ant Users List
Subject: RE: calling ant from java program


Hi,
to run optional tasks, you need the corresponding ant-xyz jar files in =
the
classpath, plus also the corresponding non ant jar files.
For instance for ftp, you need commons-net and jakarta-oro.
This is all documentented in the manual, in the section installing ant,
library dependencies.
Cheers,
Antoine
>=20
>=20
>      I am able to run ant from java program with the way mentioned by =
you
> ,but if there are any optional tasks
> it is giving the errors or "could not create task" for that optional
> task,where as if run the same build.xml with=20
> optional task using ant command it executes very well, the problem
> persists only if i am calling that java program
> and that too it should have optional task,here am i missing any =
classpath
> or any some thing like that
> i even tried with executing java -cp option but still it doesn't work =
,any
> help would be great.
>=20
> thanks,
> Murali
>=20
> -----Original Message-----
> From: Olivier Croisier [mailto:Olivier.Croisier@thales-is.com]
> Sent: Wednesday, August 25, 2004 11:44 AM
> To: Ant Users List
> Subject: Re: calling ant from java program
>=20
>=20
> > How can I call a ant task from java program?
> > Regds
> > Ashutosh
>=20
>=20
> Here is some code I wrote.
> It allows you to run any ant target from within a regular Java app.
> You'll need ant-launcher.jar and ant.jar for this class to compile.
> Enjoy :)
>=20
> BTW, any comment/idea/debug/fix welcome !
>=20
>=20
>=20
> import org.apache.tools.ant.*;
>=20
> import java.io.*;
> import java.util.*;
>=20
> /**
>   * <PRE>
>   *   This class is designed to call Ant targets from any Java
> application.
>   *   1. Initialize a new Project by calling "init"
>   *   2. Feed Ant with some properties by calling "setProperties"
> (optional)
>   *   3. Run an Ant target by calling "runTarget"
>   *
>   *
>   *   Example :
>   *
>   *   try
>   *   {
>   *       //init
>   *       init("/home/me/build.xml","/home/me/");
>   *       //properties
>   *       HashMap m =3D new HashMap();
>   *       m.put("event", "test");
>   *       m.put("subject", "sujet java 3");
>   *       m.put("message", "message java 3");
>   *       setProperties(m, false);
>   *       //run
>   *       runTarget("test");
>   *   } catch (Exception e) { e.printStackTrace(); }
>   * </PRE>
>   *
>   * @author croisier
>   */
>=20
>=20
> public class AntRunner
> {
>      private Project project;
>=20
>=20
>      /**
>       * Initializes a new Ant Project.
>       * @param _buildFile The build File to use. If none is provided, =
it
> will be defaulted to "build.xml".
>       * @param _baseDir The project's base directory. If none is =
provided,
> will be defaulted to "." (the current directory).
>       * @throws Exception Exceptions are self-explanatory (read their
> Message)
>       */
>      public void init(String _buildFile, String _baseDir) throws =
Exception
>      {
>          // Create a new project, and perform some default =
initialization
>          project =3D new Project();
>          try { project.init(); }
>          catch (BuildException e)
>              { throw new Exception("The default task list could not be
> loaded."); }
>=20
>          // Set the base directory. If none is given, "." is used.
>          if (_baseDir =3D=3D null) _baseDir=3Dnew String(".");
>          try { project.setBasedir(_baseDir); }
>          catch (BuildException e)
>              { throw new Exception("The given basedir doesn't exist, =
or
> isn't a directory."); }
>=20
>          // Parse the given buildfile. If none is given, "build.xml" =
is
> used.
>          if (_buildFile =3D=3D null) _buildFile=3Dnew =
String("build.xml");
>          try { ProjectHelper.getProjectHelper().parse(project, new
> File(_buildFile)); }
>          catch (BuildException e)
>              { throw new Exception("Configuration file "+_buildFile+" =
is
> invalid, or cannot be read."); }
>      }
>=20
>=20
>=20
>      /**
>       * Sets the project's properties.
>       * May be called to set project-wide properties, or just before a
> target call to set target-related properties only.
>       * @param _properties A map containing the properties' name/value
> couples
>       * @param _overridable If set, the provided properties values may =
be
> overriden by the config file's values
>       * @throws Exception Exceptions are self-explanatory (read their
> Message)
>       */
>      public void setProperties(Map _properties, boolean _overridable)
> throws Exception
>      {
>          // Test if the project exists
>          if (project =3D=3D null) throw new Exception("Properties =
cannot be
> set because the project has not been initialized. Please call the =
'init'
> method first !");
>=20
>          // Property hashmap is null
>          if (_properties =3D=3D null) throw new Exception("The =
provided
> property map is null.");
>=20
>          // Loop through the property map
>          Set propertyNames =3D _properties.keySet();
>          Iterator iter =3D propertyNames.iterator();
>          while (iter.hasNext())
>          {
>              // Get the property's name and value
>              String propertyName =3D  (String) iter.next();
>              String propertyValue =3D (String)
> _properties.get(propertyName);
>              if (propertyValue =3D=3D null) continue;
>=20
>              // Set the properties
>              if (_overridable) project.setProperty(propertyName,
> propertyValue);
>              else project.setUserProperty(propertyName, =
propertyValue);
>          }
>      }
>=20
>=20
>=20
>       /**
>       * Runs the given Target.
>       * @param _target The name of the target to run. If null, the
> project's default target will be used.
>       * @throws Exception Exceptions are self-explanatory (read their
> Message)
>       */
>      public void runTarget(String _target) throws Exception
>      {
>          // Test if the project exists
>          if (project =3D=3D null) throw new Exception("No target can =
be
> launched because the project has not been initialized. Please call the
'init'
> method first !");
>=20
>          // If no target is specified, run the default one.
>          if (_target =3D=3D null) _target =3D =
project.getDefaultTarget();
>=20
>          // Run the target
>          try { project.executeTarget(_target);  }
>          catch (BuildException e)
>          { throw new Exception(e.getMessage()); }
>      }
>=20
> }
>=20


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