TCommunicationException (connecting to server)

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1

By establish to connect to the server: http://localhost/tamino/testDB i get the following error:


Nested Exception (com.softwareag.tamino.db.API.invocation.TCommunicationException) stacktrace:

Nested Exception (com.softwareag.tamino.db.API.invocation.TCommunicationException) stacktrace:

Server not available for http://localhost/tamino/testDB because of wrong response
at com.softwareag.tamino.db.API.invocation.TAbstractInvocation.checkServerAvailabilityAndVersion(Unknown Source)
at com.softwareag.tamino.db.API.invocation.TInvocationFactory.initialize(Unknown Source)
at com.softwareag.tamino.db.API.invocation.TInvocationFactory.newInvocation(Unknown Source)
at com.softwareag.tamino.db.API.connection.TConnectionFactory.newConnection(Unknown Source)
at com.jaxfront.wipo.ui.editor.TestConnection.getConnection(TestConnection.java:41)
at com.jaxfront.wipo.ui.editor.TestConnection.connectionTest(TestConnection.java:58)
at com.jaxfront.wipo.ui.editor.TestConnection.(TestConnection.java:33)
at com.jaxfront.wipo.ui.editor.TestConnection.main(TestConnection.java:36)

Tamino: 4.1.4.1
JRE: 1.4.1_03

The following test was ok:

http://localhost/tamino/testDB/ino:collection?_xql=/xs:schema

The java code looks like this:

public class TestConnection {
private TConnection _connection;
private static final String CONNECTION_URL = “http://localhost/tamino/testDB”;
public TestConnection(){
connectionTest(“/testRoot/@Inno”);
}
public static void main(String args){
new TestConnection();
}
private TConnection getConnection() {
if (_connection == null) {
try {
_connection = TConnectionFactory.getInstance().newConnection(CONNECTION_URL);
}
catch (TConnectionException e) {
e.printStackTrace();
}
}

return _connection;
}
private void connectionTest(String xql) {

TResponse response = null;

TAccessLocation location;
TXMLObjectAccessor accessor;
TLocalTransaction cursorTransaction;
getConnection().setLockwaitMode(TLockwaitMode.YES);
try {
getConnection().setIsolationLevel(TIsolationLevel.UNPROTECTED);
cursorTransaction = getConnection().useLocalTransactionMode();
}
catch (TTransactionModeChangeException e) {
try {
getConnection().close();
}
catch (TException f) {
System.err.println("close after TException failed: " + f);
// fall through
}
}

location = TAccessLocation.newInstance(“TEST”);
accessor = getConnection().newXMLObjectAccessor(location, TDOMObjectModel.getInstance());

try {
TQuery query = TQuery.newInstance(xql);
response = accessor.query(query, 25);
}
catch (TException e) {
}
System.out.println(response.getQueryContentAsString());

}
}

2

From the first view, I can’t see anything wrong with your program. The exception you get indicates that the Tamino Server can’t be reached.

Try a “http://localhost/tamino/welcome_4_1_4?_diagnose=ping” in the browser on the same machine you are executing the Java program on?

If this succeeds then try “http://localhost/tamino/testDB?_diagnose=ping” on that same machine.

3

Hello abdullah,

could you please also tell us which schema(s) you have defined in your “TEST” collection, and what documents are stored in it?

Thanks,
Trevor.

4

This works fine (Internet Explorer 6.0):

If this succeeds then try “http://localhost/tamino/testDB?_diagnose=ping” on that same machine


But i can’t get a connection from the java application!

I receive this message, when i call my methode getConnection()…

Nested Exception (com.softwareag.tamino.db.API.invocation.TCommunicationException) stacktrace:

Nested Exception (com.softwareag.tamino.db.API.invocation.TCommunicationException) stacktrace:

Server not available for http://localhost/tamino/testDB because of wrong response
at com.softwareag.tamino.db.API.invocation.TAbstractInvocation.checkServerAvailabilityAndVersion(Unknown Source)
at com.softwareag.tamino.db.API.invocation.TInvocationFactory.initialize(Unknown Source)
at com.softwareag.tamino.db.API.invocation.TInvocationFactory.newInvocation(Unknown Source)
at com.softwareag.tamino.db.API.connection.TConnectionFactory.newConnection(Unknown Source)
at com.jaxfront.wipo.ui.editor.TestConnection.getConnection(TestConnection.java:41)
at com.jaxfront.wipo.ui.editor.TestConnection.connectionTest(TestConnection.java:58)
at com.jaxfront.wipo.ui.editor.TestConnection.(TestConnection.java:33)
at com.jaxfront.wipo.ui.editor.TestConnection.main(TestConnection.java:36)

I have the newest jar apis from the tamino version 4.1.4.1
Java Version: 1.4.1_03

What is the problem, that i’m not able to connnect to the Tamino DB from the java application?

5

Hello abdullah,

could you please tell us which webserver you are using to access Tamino?

This situation reminds me of a problem we saw a few months ago…
Could you please have a look at this posting: remote db and see if there is anything helpful in there?

Thanks,
Trevor.