ConfigManager.java

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package com.neuronrobotics.sdk.common;
 
import java.io.File;
 
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
 
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
 
import com.neuronrobotics.sdk.network.BowlerTCPClient;
import com.neuronrobotics.sdk.network.UDPBowlerConnection;
 
 
// TODO: Auto-generated Javadoc
public class ConfigManager {
    
    public static BowlerAbstractConnection loadDefaultConnection(String filename) {
        try {
            
            File file = new File(filename);
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            Document doc = db.parse(file);
            doc.getDocumentElement().normalize();
            NodeList nodeLst = doc.getElementsByTagName("connection");
            
            for (int s = 0; s < nodeLst.getLength(); s++) {
    
                Node fstNode = nodeLst.item(s);
    
                if (fstNode.getNodeType() == Node.ELEMENT_NODE) {
    
                    Element e = (Element) fstNode;
                    
                    String type = getElementValue(e, "type", "");
                    String port = getElementValue(e, "port", "");
                    String baud = getElementValue(e, "baud", "0");
                    String host = getElementValue(e, "host", "127.0.0.1");
                    
                    if(type.equalsIgnoreCase("serial")) {
                        //return new SerialConnection(port, Integer.parseInt(baud));
                    }
                    
                    if(type.equalsIgnoreCase("udp")) {
                        return new UDPBowlerConnection(Integer.parseInt(port));
                    }
                    
                    if(type.equalsIgnoreCase("tcp")) {
                        return new BowlerTCPClient(host, Integer.parseInt(port));
                    }
                }
    
            }
        } catch (Exception e) { 
            e.printStackTrace();
        }
        
        return null;
    }
    
    private static String getElementValue(Element e, String key, String dval) {
        NodeList elmntLst = e.getElementsByTagName(key);
        if(elmntLst.getLength() > 0) {
            Element elmnt = (Element) elmntLst.item(0);
            NodeList value = elmnt.getChildNodes();
             ((Node) value.item(0)).getNodeValue();
             return ((Node) value.item(0)).getNodeValue();
        }
        return dval;
    }
}