[izpack-devel] Strange NullPointerException

Thu Mar 30 13:23:05 CEST 2006

Hi all,

Hope someone can help with this problem I've been having - the Ant
script itself runs fine as a standalone script, but somehow when I try
to run it as part of the IzPack install process, it falls over with a
NullPointerException.

Here is the stack trace from the installer:

LOG enabled.

creating Logfile: 'IzPack_Logfile_at_1143717579047.txt' in:
'C:\DOCUME~1\Chris\L

OCALS~1\Temp\'

TRACE enabled.

STACKTRACE enabled.

No custom langpack available.

checking if os constraints [Os  family unix name null version null arch
null ] m

atch current OS

no match with current OS!

checking if os constraints [Os  family windows name null version null
arch null

] match current OS

matched current OS.

checking if os constraints [Os  family unix name null version null arch
null ] m

atch current OS

no match with current OS!

checking if os constraints [Os  family windows name null version null
arch null

] match current OS

matched current OS.

******* Executing all afterpacks actions of runinstallers ...

Calling ANT with buildfile: C:/Temp/build_runinstallers.xml

com.izforge.izpack.installer.InstallerException:
java.lang.NullPointerException

        at
com.izforge.izpack.event.AntActionInstallerListener.performAllActions

(AntActionInstallerListener.java:260)

        at
com.izforge.izpack.event.AntActionInstallerListener.afterPacks(AntAct

ionInstallerListener.java:189)

        at
com.izforge.izpack.installer.Unpacker.informListeners(Unpacker.java:1

036)

        at com.izforge.izpack.installer.Unpacker.run(Unpacker.java:563)

Caused by: java.lang.NullPointerException

        at java.util.Hashtable.put(Hashtable.java:389)

        at
org.apache.tools.ant.PropertyHelper.setProperty(PropertyHelper.java:3

35)

        at
org.apache.tools.ant.Project.setPropertyInternal(Project.java:460)

        at
org.apache.tools.ant.Project.setSystemProperties(Project.java:800)

        at
com.izforge.izpack.event.AntAction.performAction(AntAction.java:140)

        at
com.izforge.izpack.event.AntAction.performInstallAction(AntAction.jav

a:100)

        at
com.izforge.izpack.event.AntActionInstallerListener.performAllActions

(AntActionInstallerListener.java:256)

        ... 3 more

My AntActionsSpec.xml looks like this:

<antactions>

    <pack name="runinstallers">

      <antcall buildfile="C:/Temp/build_runinstallers.xml"
order="afterpacks" verbose="yes" logfile="C:/Temp/mainantinstall.log">

            <target name="do_all"/>

      </antcall>

    </pack>

</antactions>

Ant build script:

<project name="build_runinstallers" default="do_all" basedir=".">

      <!-- set global properties for this build

      <property environment="env"/>

      <property name="build.compiler" value="${JAVAC}"/>

      <property name="classpath.thisbuild" value="${env.CLASSPATH}"/>

       -->

      <target name="do_all"
depends="which_installers,execute_comms_installer,execute_database_insta
ller,execute_access_installer"/>

      <target name="which_installers" description="">

            <condition property="comms.layer">

                        <equals arg1="${COMMS_LAYER}" arg2="on"/>

            </condition>

            <condition property="database.layer">

                        <equals arg1="${DATABASE_LAYER}" arg2="on"/>

            </condition>

            <condition property="access.layer">

                        <equals arg1="${ACCESS_LAYER}" arg2="on"/>

            </condition>

      </target>

      <target name="execute_comms_installer" if="comms.layer"
description="Should run any of the comms installers">

            <java jar="${INSTALL_TYPE}_comms.jar" fork="true"/>

      </target>

      <target name="execute_database_installer" if="database.layer"
description="Should run any of the database installers">

            <java jar="${INSTALL_TYPE}_database.jar" fork="true"/>

      </target>

      <target name="execute_access_installer" if="access.layer"
description="Should run any of the access installers">

            <java jar="${INSTALL_TYPE}_access.jar" fork="true"/>

      </target>

</project>

And the Install.xml looks like this:

<?xml version="1.0" encoding="iso-8859-1" standalone="yes" ?>

<!-- 

      Matador Server IzPack creation file.

      This file is used during IzPack compilation process

      to create the Matador Database installer.

-->

<installation version="1.0">

    <!-- 

        The info section.

        The meaning of the tags should be natural ...

    -->

    <info>

        <appname>Matador</appname>

        <appversion>1.1</appversion>

        <authors>

            <author name="FBBT" email="info at fbbt.co.uk"/>

        </authors>

        <url>http://www.fbbt.co.uk/</url>

        <uninstaller write="no"/>

    </info>

    <!-- 

        The gui preferences indication.

        Sets the installer window to 800x800. It will not be able to
change the size.

    -->

    <guiprefs width="600" height="400" resizable="no">

      <laf name="looks">

            <os family="unix"/>

      </laf>

      <laf name="looks">

            <os family="windows"/>

      </laf>

    </guiprefs>

    <!-- 

    Different locales not required yet...

    -->

    <locale>

        <langpack iso3="eng"/>

    </locale>

    <!-- 

        The resources section.

        The ids must be these ones if you want to use the LicencePanel
and/or the InfoPanel.

    -->

    <resources>

        <res id="HTMLLicencePanel.licence" src="licence.html"/>

        <res id="HTMLInfoPanel.info" src="readme.html"/>

        <res id="userInputSpec.xml" src="userInputSpec.xml"/>

        <res id="AntActionsSpec.xml" src="AntActionsSpec.xml"/>

    </resources>

    <listeners>

        <listener installer="AntActionInstallerListener"
uninstaller="AntActionUninstallerListener"/> 

    </listeners>  

    <jar src="jars/ant.jar" stage="both"/>

    <jar src="jars/commons-net-1.4.1.jar" stage="both"/>

    <jar src="jars/jakarta-oro-2.0.8.jar" stage="both"/>

    <jar src="jars/jsch.jar" stage="both"/>

    <jar src="jars/xercesImpl.jar" stage="both"/>

    <jar src="jars/xml-apis.jar" stage="both"/>

    <!-- 

        The panels section.

        We indicate here which panels we want to use. The order will be
respected.

    -->

    <panels>

        <panel classname="HelloPanel"/>

        <panel classname="HTMLInfoPanel"/>

        <panel classname="UserInputPanel"/>

        <panel classname="InstallPanel"/>

        <panel classname="SimpleFinishPanel"/>

    </panels>

    <!-- 

        The packs section.

        We specify here our packs.

    -->

    <packs>

      <pack name="Base" required="yes">

              <description>Ant Build scripts for servers</description>

            <file src="build_runinstallers.xml" targetdir="/tmp">

                  <os family="unix"/>

            </file>

            <file src="build_runinstallers.xml" targetdir="C:/Temp">

                  <os family="windows"/> 

            </file> 

            <parsable targetfile="/tmp/build_runinstallers.xml">

                  <os family="unix"/>

            </parsable> 

            <parsable targetfile="C:/Temp/build_runinstallers.xml">

                  <os family="windows"/> 

            </parsable>

      </pack>

      <pack name="runinstallers" required="yes">

            <!-- Dummy pack here so that the other pack gets completed
before ANT is tried to be run on it -->

            <description>Dummy Pack needed for
installation</description>

      </pack>

    </packs>

</installation>

Any ideas would be welcome!!

--

Chris McGonagle

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