Xalan: The org.apache.xalan.xslt.EnvironmentCheck Class

Extends: java.lang.Object

Members

Overview

This is a utility class to report simple information about the environment. This class helps to get environment setup of your system.

Note: This class is pretty simplistic: results are not necessarily definitive nor will it find all problems related to environment setup. Also, you should avoid calling this in deployed production code, both because it is quite slow and because it forces classes to get loaded.

Note: This class explicitly has very limited compile-time dependencies to enable easy compilation and usage even when Xalan, DOM/SAX/JAXP, etc. are not present.

Note: for an improved version of this utility, please see the xml-commons' project which utility which does the same kind of thing but in a much simpler manner.

To use this class ensure that xalan.jar is in your class path.

Method Overviews

Usage:

            You can use this utility class from command line as below:

java org.apache.xalan.xslt.EnvironmentCheck [-out outFile]

If you want your environment details to be written in your file the you can add the argument. Otherwise your environment details will be printed in command line. The output would be:

#---- BEGIN writeEnvironmentReport($Revision: 1.14 $): Useful stuff found: ----

version.DOM.draftlevel=2.0fd

java.class.path=.;C:\Program Files\CA\Ingres [II]\ingres\lib\iijdbc.jar;C:\fop-0

.20.5\build\fop.jar;C:\xalan-j_2_6_0\bin\bsf.jar;C:\xalan-j_2_6_0\bin\xalan.jar;

C:\xalan-j_2_6_0\bin\xalansamples.jar;C:\xalan-j_2_6_0\bin\xercesImpl.jar;C:\xal

an-j_2_6_0\bin\xml-apis.jar;C:\xalan-j_2_6_0\bin\xsltc.jar;C:\xalan-j_2_6_0\bin\

xsltcapplet.jar;C:\xalan-j_2_6_0\bin\xsltcbrazil.jar;C:\xalan-j_2_6_0\bin\xsltce

jb.jar;C:\xalan-j_2_6_0\bin\xsltcservlet.jar;C:\xerces-1_4_4\xerces.jar

version.JAXP=1.1

Usage from Java class:

If you want to check your environment details in your program then you can use methods provided by this class

Example of getEnvironmentHash():

getEnvironmentHash() returns Hashtable with various system and CLASSPATH, etc. properties are put into the hash as keys with a brief description of the current state of that item as the value.

public void checkEnviorment(){

        EnvironmentCheck environmentCheck = new EnvironmentCheck();

        Hashtable environmentHash = environmentCheck.getEnvironmentHash();

        Enumeration enumeration = environmentHash.keys();

        while(enumeration.hasMoreElements()){

            Object object = enumeration.nextElement();

            System.out.println("Key Name :"+object);

            System.out.println("Key value :"+environmentHash.get(object));

        }

    }

Usage from XSLT Sylesheet:

You can also use this class in your stylesheet with namespace xmlns:xalan="http://xml.apache.org/xalan. You should ensure that your stylesheet processor is able to load this namespace.

<xsl:template match="/">

      <xsl:copy-of select="xalan:checkEnvironment()"/>

</xsl:template>