Accessing the Versant C++ database using Java

public class stars extends Applet implements Runnable{

Session s;

Label lMessage;

Thread T;

public void init() {

Capability cap = new NewSessionCapability();

Properties prop = new Properties();

prop.put("database", "starsdb1");

s = new SimpleSession(prop,cap);

lMessage = new Label("Initialising...");

lMessage.setText("Initialised");

}

public void run() {

AttrFloat xcentre = s.newAttrFloat("Star::xcentre");

AttrFloat ycentre = s.newAttrFloat("Star::ycentre");

AttrFloat sigma = s.newAttrFloat("Star::sigma");

AttrInt catalogue = s.newAttrInt("Star::catalogue");

ClassHandle star = s.locateClass("Star");

if(star!=null) {

HandleEnumeration he = star.select();

Handle [] ha = he.asArray();

lMessage.setText("Total of "+ha.length+" stars");

for(int i=0;i<.length;i++) {

float xpos = ha[i].get(xcentre);

float ypos = ha[i].get(ycentre);

float sig = ha[i].get(sigma);

}

}

}

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