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From <Jan.Mate...@rzf.fin-nrw.de>
Subject AW: question about clearcase api
Date Thu, 04 Dec 2008 12:52:10 GMT
>I am trying to use the clearcase
>org.apache.tools.ant.taskdefs.optional.clearcase.CCCheckout tool and I
>get a null pointer error on line 43 "ckout.execute();".  The code is
>attached below.
>
> 
>
>Here is the Exception:
>
> 
>
>Exception in thread "main" java.lang.NullPointerException
>
>      at
>org.apache.tools.ant.taskdefs.optional.clearcase.ClearCase.run(
>ClearCase
>.java:134)
>
>      at
>org.apache.tools.ant.taskdefs.optional.clearcase.CCCheckout.exe
>cute(CCCh
>eckout.java:145)
>
>      at
>com.lmco.dat.util.ClearCaseMethods.checkOutFiles(ClearCaseMetho
>ds.java:4
>4)
>
>      at com.lmco.dat.util.Main.main(Main.java:9)
>
> 
>
>I checked and all of the required attributes are set(
>
>reserved
>
>Specifies whether to check out the file as reserved or not
>
>Yes
>
>).  
>
> 
>
>Do you have a code example that I can view?
>
> 
>
>Thanks in advance,
>
>Nicole
>
> 
>
>1   package com.lmco.dat.util;
>
>2
>
>3     import java.io.File;
>
>4     import java.text.SimpleDateFormat;
>
>5
>
>6     import org.apache.tools.ant.Task;
>
>7     import
>org.apache.tools.ant.taskdefs.optional.clearcase.CCCheckout;
>
>8     
>
>9     public class ClearCaseMethods{
>
>10    
>
>11    /**  Date format required by commands passed to Clear Case */
>
>12    static final SimpleDateFormat IN_DATE_FORMAT =
>
>13                                        new
>SimpleDateFormat("dd-MMMM-yyyy.HH:mm:ss");
>
>14
>
>15    /**  Date format returned in the output of Clear Case 
>commands. */
>
>16    static final SimpleDateFormat OUT_DATE_FORMAT = 
>
>17                                              new
>SimpleDateFormat("yyyyMMdd.HHmmss");
>
>18    
>
>19    /**  The path of the clear case view */
>
>20    private static String viewPath =
>"C:/ngrant_irad_view/webapps/IRADMgmt/test.txt";
>
>21    private String branch;
>
>22
>
>23    
>
>24    //Constructor
>
>25    public static void ClearCaseMethods(){
>
>26          System.out.println("Here is my Clearcase test");
>
>27    }
>
>28   
>
>29   
>
>30    public static void checkOutFiles(){
>
>31          
>
>32          Boolean reserved = true;
>
>33          
>
>34          CCCheckout ckout = new CCCheckout();
>
>35          ckout.setBranch("main");
>
>36          ckout.setDescription("test desc");
>
>37          ckout.setViewPath("C:/ngrant_irad_view");       
>
>38          ckout.setComment("here is my comment");
>
>39          ckout.setReserved(reserved);
>
>40          ckout.setOut("C:/ngrant_irad_view/webapps/IRADMgmt/");
>
>41          ckout.setObjSelect("test.txt");
>
>42          
>
>43          ckout.execute();
>
>44 
>



You could have a look at its source
http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/an
t/taskdefs/optional/clearcase/ClearCase.java?view=annotate
Line 134 is
   exe.setWorkingDirectory(aProj.getBaseDir());
aProj is initialized on 130
   Project aProj = getProject();
That method is inherited from ProjectComponent (Task base class extends
that) which returns the project reference needed for logging, properties
etc.

You havent set that value.
   ckout.setProject(...);


Jan

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