Read the XML configuration file to obtain extra params

ConfReader.java

/* Reads the configuration from the settings  XML File
 * This is for providing the params needed in the
 * server side
 * Created  Tue Feb 15 18:59:31 IST 2011: Kish
 * Updated to include Sipx changes  Feb 25 2011: Kish
 *
 * 
Needed
commons-collections-3.2.jar
commons-configuration-1.6.jar
commons-lang-2.6.jar
commons-logging-1.1.1.jar
*/


import org.apache.commons.configuration.*;
import org.apache.commons.lang.exception.*;
import org.apache.commons.configuration.ConfigurationException;

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


public class ConfReader{



    /* Private members */

    /* To store the sipx params */
    private Map <String, String > SipxConfMap;


    /* Set the default conf filename */
    String filename="global.xml";

   /* Allow overriding the set conf filename */
    public void setConfigFile(String filename){
        this.filename = filename ;
    }

   /* Read the services defined in the conf file */
    public List readServices() throws Exception{

        /* The name of the root element is not needed while addressing the
           elements */

        List services = this.readConfigFile().getList("services.name");

        /* if no services are available the conf file may be broken
           throw exception here */

        if (services.size() < 1 ) {
                 throw new Exception("Services.name not defined in your global.xml file");
        }
        else{
                /* return the list of services that were read */
                return services ;
        }
    }

    /* Read the other User object parameters that will be needed to create the
       User but are not provided from the front end forms
     */
    public List readUser() throws Exception{
        List user = this.readConfigFile().getList("user");
        return user;
    }


    /* Read the Sipx related extra configuration params.
     */

    public Map readSipxParams() throws Exception {
        SipxConfMap = new HashMap<String, String>() ;

        /* This is dumb */
        SipxConfMap.put("host", (String) this.readConfigFile().getList("sipx.host").get(0) );
        SipxConfMap.put("password", (String) this.readConfigFile().getList("sipx.host").get(0));

        return SipxConfMap;   /* TODO: add error checking */

    }

    /* Obtain a handle on the conf file */
    private XMLConfiguration readConfigFile() throws ConfigurationException{
                 XMLConfiguration config = new XMLConfiguration(this.filename);
                 return config;

        }




   /* This clsss should be used like this  */
        public static void main(String a[]) {
    try
        {
           Test_XML tex = new Test_XML();
           tex.setConfigFile("global.xml");

           List  services =  tex.readServices();
           List  user = tex.readUser();

           System.out.println(services.size());
           System.out.println(user.size());

           for (int len = services.size(), i = 0 ; i < len ; i ++ ) {
                   System.out.println("Service: " + services.get(i) ) ;
           }
           for ( int len = user.size(), i = 0 ; i < len ; i ++ ) {
                           System.out.println("User: " + user.get(i) ) ;

           }

          Map <String,String> SipxConfParams = tex.readSipxParams();

           String host = SipxConfParams.get("host");
           String password = SipxConfParams.get("password");

           System.out.println("Sipx Host: "
                                                        +host
                                                        +" Sipx Password: "
                                                        +password )  ;

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


  /* */
}