Action script

**Cyro** · July 15th, 2009, 02:14 PM

Originally Posted by Cyro

...

nvm the question. I got it to work. BUT when I try http://localhost:8080/Simplest I just get Loading and nothing moves. I don't know is it actually streaming or not. If you've got a little time here's the code:
Data adapter:

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.Reader;
import java.io.StreamTokenizer;
import java.util.HashMap;
import java.util.Map;

import com.lightstreamer.interfaces.data.DataProvider;
import com.lightstreamer.interfaces.data.DataProviderExce ption;
import com.lightstreamer.interfaces.data.FailureException ;
import com.lightstreamer.interfaces.data.ItemEventListene r;
import com.lightstreamer.interfaces.data.SubscriptionExce ption;

public class Simplest implements DataProvider {

private ItemEventListener listener;
private Map<String, ItemThread> threads = new HashMap<String, ItemThread>();

public void init(Map params, File configDir) throws DataProviderException {
}

public boolean isSnapshotAvailable(String itemName)
throws SubscriptionException {
return false;
}

public void setListener(ItemEventListener listener) {
this.listener = listener;
}

public synchronized void subscribe(String itemName, boolean needsIterator)
throws SubscriptionException, FailureException {
if (itemName.equals("stream")) {
ItemThread it = new ItemThread(itemName);
it.start();

/*ItemThread it = threads.get(itemName);
if (it == null) {
it = new ItemThread(itemName);
it.start();
threads.put(itemName, it);
*/}

}

public synchronized void unsubscribe(String itemName) throws SubscriptionException,
FailureException {

ItemThread it = threads.get(itemName);
if (it != null) {
it.close();
threads.remove(itemName);
}
}

class ItemThread extends Thread {

private final String item;
private volatile boolean go = true;

public ItemThread(String item) {
this.item = item;
}

public void run() {
int i=0;
while(go) {
Map<String,String> data = new HashMap<String,String>();
try {Reader r = new BufferedReader(new FileReader("primjer.txt"));
StreamTokenizer stok = new StreamTokenizer(r);
stok.parseNumbers();
// double sum = 0;
stok.nextToken();
while (stok.ttype != StreamTokenizer.TT_EOF) {
if (stok.ttype == StreamTokenizer.TT_NUMBER)
i++;
if(i%3==2){
data.put("Sljedeca vrijednost:", Double.toString(stok.nval));
listener.update(item, data, false);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
}

}

stok.nextToken();
}
catch(Exception e){e.printStackTrace();}

}}
public void close() {
go = false;
}
}

}

Client:

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"></meta>
<script language="JavaScript" src="LS/lscommons.js"></script>
<script language="JavaScript" src="LS/lspushpage.js"></script>
</head>

<body>
<h1>Simplest</h1>

<div>
Stream
<span source="lightstreamer" table="table1" item="stream" field="Sljedeca vrijednost:">Loading...</span>

</div>

<script>

/////////////////PushPage Configuration

var lsPage = new PushPage();
var debugAlerts = false;
var remoteAlerts = false;
var pushHost = null;
var pushPort = null;
var useDomain = null;

lsPage.context.setDomain(useDomain);
lsPage.context.setDebugAlertsOnClientError(debugAl erts);
lsPage.context.setRemoteAlertsOnClientError(remote Alerts);

lsPage.onEngineCreation = function(lsEngine) {
lsEngine.context.setDebugAlertsOnClientError(debug Alerts);
lsEngine.context.setRemoteAlertsOnClientError(remo teAlerts);

lsEngine.connection.setLSHost(pushHost);
lsEngine.connection.setLSPort(pushPort);
lsEngine.connection.setAdapterName("SIMPLEST");

lsEngine.changeStatus("STREAMING");
}

lsPage.bind();
lsPage.createEngine("SimplestEng","LS","SHARE_SESS ION");

///////////////////////Table configuration

var table1 = new OverwriteTable(stream, null, "RAW");
table1.setClearOnDisconnected(true);
table1.setClearOnRemove(true);
lsPage.addTable(table1, "table1");

</script>
</body>

</html>

**Mone** · July 16th, 2009, 09:28 AM

Hi,

Assuming that field/item/adapter names are correct (check the server log to see if there are errors) I can see only one error:

the variable stream is not defined anywhere so that the above call throws an exception. You should substitute it with one of the following:

specifying the list of items to be subscribed:

specifying null so that the table will read the item list from the associated html element(s):

For javascript debug I advice you to use firefox with the firebug plugin.
HTH

**Cyro** · July 16th, 2009, 09:42 AM

I tryed the line you gave me and nothing new happened. Problem is that server doesn't list any errors, data adapter didn't list any errors before compiling or after for that matter and Evrsoft front page tried to open the page and didn't list any problems. BUT... Field still says loading and nothing moves... I even tried to copy your entire Simplest data adapter and client and that too didn't budge. Just stands there looking pretty. I think that word Loading will forever stay etched in my mind

**Mone** · July 16th, 2009, 09:51 AM

did you debug the adapter code? (you can debug it following this guide: http://www.lightstreamer.com/vb/showthread.php?t=145 )

then try to paste here a snippet from your server log

**Cyro** · July 16th, 2009, 10:21 AM

no debugging errors. not one. but still no luck. page can be opened in browser but looks like either data adapter is not streaming OR client is not recieving because I get the page with heading and everything but instead of data I still get Loading.

**Mone** · July 16th, 2009, 12:23 PM

Please get a detailed log from the Server, after setting the priorities for the "LightstreamerLogger.subscriptions" and "LightstreamerLogger.pump" categories as DEBUG in the Server log configuration file (LS_HOME/conf/lightstreamer_log_conf.xml) and then paste it here.