RE: Servlet testing tools
Cactus project from Jakarta, and then there's HTML Unit that might appeal to you more. -Original Message- From: Darryl L. Pierce [mailto:[EMAIL PROTECTED] Sent: Monday, September 15, 2003 8:29 AM To: Tomcat Users List Subject: Servlet testing tools I'm looking for a tool to use for stress testing a servlet. It should let me: 1. define the URL for connecting to my servlet 2. specify the content and type for an HTTP POST to the servlet 3. collect success/failure metrics for the connections 4. spit out a report for 3 above Any suggestions? -- Darryl L. Pierce [EMAIL PROTECTED] Visit the Infobahn Offramp - http://bellsouthpwp.net/m/c/mcpierce What do you care what other people think, Mr. Feynman? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
META-INF - JNDI Datasource resolution
Currently, we are having some issues with hot deploying wars from ant tasks and relying on our context being specified in the META-INF folder. We are getting a connection = 'null' when a war is used, but if we expand the war, using the same context, into a folder, then it works fine. From what we can tell, Tomcat is using DBCP (as specified) in instantiating a DataSource, but all of the ResourceParams are being set possibly? As to the reason why the context doesn't load the connection from a war, but does do it from an expanded directory from a war? Thanks! Jacob - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Memory leaks?
But depending on the DB, it can cause problems from the DB with too many open ResultSets... I had an issue with performance testing where everything but ResultSets were being closed and the Oracle DB started throwing errors after about 500 queries. Better safe than sorry. -Original Message- From: Greg Ward [mailto:[EMAIL PROTECTED] Sent: Thursday, September 04, 2003 9:05 AM To: Tomcat Users List; [EMAIL PROTECTED] Subject: Re: Memory leaks? On 03 September 2003, Jim Lynch said: OK, that's probably what's going on. I know I should close Statements and Connections and do normally but I'm fairly certain I've some out there dangling. I didn't know you had to close ResultSets, however. Glad to know that. You don't have to close ResultSets -- check the JDBC docs: http://java.sun.com/j2se/1.4.2/docs/api/java/sql/Statement.html#close() (Closing a Statement also closes any open ResultSets associated with that Statement.) Greg - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Which is the best way to install an application with connecti on p ooling
I'm trying to accomplish a similar thing with an AS/400 db over JNDI. I have my context setup in my meta-inf and from stack traces; I see that DBCP is the one launching the error, so I know that the context binding is loading successfully. The problem is that DBCP is throwing and exception that the driver specified is null, I have the jar located in the webapp's lib, the shared/lib and the server/lib... which lib directory should contain the driver so that the context can see it? Note: I'm deploying via Ant by pointing at a war file in my project. Many Thanks! Jacob Hookom McKesson Medical-Surgical -Original Message- From: John Turner [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 03, 2003 10:32 AM To: Tomcat Users List Subject: Re: Which is the best way to install an application with connecti on p ooling If you are using a WAR file, put your entire Context block into a file called (your-webapp).xml and stick it in META-INF. Whatever is legal in a Context block in server.xml is also legal there. Then you can deploy the WAR file using the manager app froma remote system. The admin and manager apps themselves do the same thing, check out admin.xml etc in the default distribution. John Kevin Passey wrote: John, I can easily deploy a basic app using the manager. But when it comes to deploying something that needs additional Context information I come un-stuck. I basically have an app that I want to connect to an AS/400 database using connection pooling. The only way I can get it to work is to manually insert the entries in the server XML file and then re-start. Any other pointer greatly appreciated. Regards Kevin -Original Message- From: John Turner [mailto:[EMAIL PROTECTED] Sent: 02 September 2003 13:45 To: Tomcat Users List Subject: Re: Which is the best way to install an application with connection p ooling There are a number of ways. If autoDeploy = true then you can just drop the WAR file in the Host's appBase directory. You can also use the manager app's various tasks (install, deploy, etc): http://jakarta.apache.org/tomcat/tomcat-4.1-doc/manager-howto.html This is easily accomplished with ant. John Kevin Passey wrote: I have normally stopped the server - edited the server XML file, put my war file in the webapps folder and re-started tomcat. Using the manager app - is there a way I can do this 1)from a remote system and 2)without manually editing the server XML file. I've have tried putting the jndi info using the admin console but I keep getting NULL driver exceptions. Thanks Kevin - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
War Development w/ JNDI Datasources
Hi All,
We are currently developing an application and using CVS to manage our
source code. Our goal is to be able to pull down the project off of CVS and
with a single Ant target, get the application up and running on a local
install of Tomcat.
The problem that has risen is that our DataSources are specified in JNDI
(the server.xml in the {CATALINA_HOME}/conf) and is not something that we
can feasibly park in CVS.
Is there a way to get the DataSources specified without modifying the
server.xml? Or, should we be making an ANT target that loads a second
instance of tomcat using a project specific server.xml, much like what
Cactus describes?
Many Thanks,
Jacob
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RE: I have a problem!!!
There are a couple of books out there from Macromedia on application development with Flash MX. Most of the integration that can occur with J2EE is via RPC with SOAP/Web Services. It's VERY new and so I would recommend finding a book from Macromedia on it. -Jacob -Original Message- From: Jean-Francois Arcand [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 9:01 AM To: Tomcat Users List Subject: Re: I have a problem!!! Send an email to [EMAIL PROTECTED] -- Jeanfrancois RobDel wrote: Good morning, I need know if can use tomcat to inegration between Java e Flash using Flash Remoting MX with JavaBean. Sorry by my english, but i am brazilian. Bye Robson Del Angelo - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: UserDatabase implementations
The documentation on Tomcat's web site describes how to do this: http://jakarta.apache.org/tomcat/tomcat-4.1-doc/realm-howto.html In my experience, the authentication provided here is very simple where the only assumption is that there is a username (principal) and that username has a list of roles defined as strings. For application development, the user object has many more properties than just a name and a set of roles. Therefore, login operations are handled by your own code. -Jacob -Original Message- From: Bill Schneider [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 9:30 AM To: [EMAIL PROTECTED] Subject: UserDatabase implementations Are there plans to have JDBC or JDNI/LDAP implementations of org.apache.catalina.UserDatabase? This would be very useful, as webapps often have to perform actions beyond what J2EE APIs provide (get all users in group, get all groups, add users/groups/membership). The advantages would be twofold: you would only have to configure your user store once in server.xml; and if you change between XML, JDBC or LDAP user stores at the server level, you don't have to touch your application-level configuration. Or am I misreading the whole purpose of J2EE container authentication? Should J2EE authentication be reserved for server administration-level applications like the manager, and should we use a different system for application-level access and authentication altogether? -- Bill Schneider Software Architect Vecna Technologies, Inc. 5004 Lehigh Road, Suite B College Park, MD 20740 [EMAIL PROTECTED] t: 301-864-7594 f: 301-699-3180 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Unit Testing
We are looking to do unit testing of our DAO components that currently leverage DataSource lookup via Java Naming. Are there UnitTests already out there that would give me that JNDI environment to test our code in? I know Cactus provides testing of Servlets, etc, but does that also provide me with duplicate JNDI lookup? Many Thanks, Jacob - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: MY ATTITUDE
Don't wallow in the mud with pigs, you will get dirty and the pigs will like it -Lorrie Ardion -Original Message- From: Steve Burrus [mailto:[EMAIL PROTECTED]] Sent: Tue 2/11/2003 8:53 PM To: Tomcat Users List Cc: Subject: Re: MY ATTITUDE Mike, (u don't mind if I call you Mike do you? :-) ) what did you mean by stating Don't feed the troll, eh? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Can someone tell me please.........
get and set on what? try getAttribute() setAttribute() -Original Message- From: Steve Burrus [mailto:[EMAIL PROTECTED]] Sent: Fri 2/7/2003 2:38 PM To: [EMAIL PROTECTED] Cc: Subject: Can someone tell me please. Can someone tell me please just what the current methods are supposed to be for the deprecated getValue() and setValue() and there's some other method dealing with Value that I momentarily forgot! A recent program that I was trying to run gave me about 3 separate deprecation warnings when I tried to compile it! Thanx in advance. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Loading XML Files - Best Pracitices
I've used it on a few projects-- XSLT Dom to Dom transformations are a little buggy
yet. Dom4j's web site does offer some links to benchmarks:
http://www.dom4j.org/benchmarks/xpath/index.html Dom4j vs. Xalan with XPath Queries
http://www-106.ibm.com/developerworks/library/x-injava2/ Dom4j vs. Everyone
Dom4j also has support for PullParsing or XPP. This, when paired with the ability to
prune on read allows very large documents to be executed upon in short order. One
other issue is that Dom4j does not align with the w3c standard API. There are
partially finished classes for integration, but it needs some work yet as of the last
release I looked at (1mo).
If we want to discuss XML-Bean-XML, then yes, Betwixt would be ideal. I prefer
Castor (www.castor.org) because it provides a little more customizability for how the
documents are (un?)marshalled.
-Jacob
-Original Message-
From: Jacob Kjome [mailto:[EMAIL PROTECTED]]
Sent: Sun 1/5/2003 2:11 PM
To: Tomcat Users List
Cc:
Subject: RE: Loading XML Files - Best Pracitices
Hi Jacob,
Did you actually test the performance of Dom4j? I'm just curious. I have
heard very good things about Dom4j.
Jake
At 08:08 PM 1/4/2003 -0600, you wrote:
I recommend Dom4j, it offers the best overall performance out of the XML
libs and it works really well for large files with the ability to prune on
read.
www.dom4j.org
-Original Message-
From: Jacob Kjome [mailto:[EMAIL PROTECTED]]
Sent: Sat 1/4/2003 1:58 PM
To: Tomcat Users List
Cc:
Subject: Re: Loading XML Files - Best Pracitices
No, I don't really have any reservations about JDOM...except for
the fact
that there has been little to zero development on it of
late. Check out
the amount of time that has passed since the last beta release (9
- 10
months!). At this rate, they'll release a 1.0 version in a
couple more
years while Xerces development steams on ahead. JDOM may be
elegant, but I
wish the main developers would put their nose to the grindstone
and get, at
least, another beta release out in short order!
To tell you the truth, I would just use a SAX parser. That will
be faster
than any of the other methods including JDOM.
Jake
At 12:01 PM 1/4/2003 -0600, you wrote:
Howdy,
Thanks for all the good suggestions. I'm going with JDOM, just
because
it's pretty darn elegant and simple. It also appears that it will be
(if not already) an XML standard for Java. So all signs
indicate that
I'm not marrying myself to an obscure API.
Do any of you have reservations about JDOM?
Thanks,
-FB
On Saturday, January 4, 2003, at 08:02 AM, Jacob Kjome wrote:
Well,
There are a number of parsers available. You can use DOM, JDOM,
DOM4J, SAX, or, actually, you might want to try out XPath using
Jaxen.
Here is an example of reading in a document using DOMand no
specific external package so you don't marry yourself to a
particular
implementation...
DocumentBuilderFactory dbfactory =
DocumentBuilderFactory.newInstance();
dbfactory.setNamespaceAware(true);
Document doc = null;
try {
DocumentBuilder dbuilder = dbfactory.newDocumentBuilder();
InputStream =
context.getResourceAsStream(/WEB-INF/mydoc.xml);
doc = dbuilder.parse(is);
}
catch (ParserConfigurationException pce) {}
catch (SAXException se) {}
catch (IOException ioe) {}
You can then grab a NodeList of some part of the document and
iterate
through that or you can then use Jaxen to get to specific data with
XPath queries
try {
XPath xpath = new
DOMXPath(//MyElement[@myAttribute='someSpecificValue']/
RE: Loading XML Files - Best Pracitices
I recommend Dom4j, it offers the best overall performance out of the XML libs and it
works really well for large files with the ability to prune on read.
www.dom4j.org
-Original Message-
From: Jacob Kjome [mailto:[EMAIL PROTECTED]]
Sent: Sat 1/4/2003 1:58 PM
To: Tomcat Users List
Cc:
Subject: Re: Loading XML Files - Best Pracitices
No, I don't really have any reservations about JDOM...except for the fact
that there has been little to zero development on it of late. Check out
the amount of time that has passed since the last beta release (9 - 10
months!). At this rate, they'll release a 1.0 version in a couple more
years while Xerces development steams on ahead. JDOM may be elegant, but I
wish the main developers would put their nose to the grindstone and get, at
least, another beta release out in short order!
To tell you the truth, I would just use a SAX parser. That will be faster
than any of the other methods including JDOM.
Jake
At 12:01 PM 1/4/2003 -0600, you wrote:
Howdy,
Thanks for all the good suggestions. I'm going with JDOM, just because
it's pretty darn elegant and simple. It also appears that it will be
(if not already) an XML standard for Java. So all signs indicate that
I'm not marrying myself to an obscure API.
Do any of you have reservations about JDOM?
Thanks,
-FB
On Saturday, January 4, 2003, at 08:02 AM, Jacob Kjome wrote:
Well,
There are a number of parsers available. You can use DOM, JDOM,
DOM4J, SAX, or, actually, you might want to try out XPath using Jaxen.
Here is an example of reading in a document using DOMand no
specific external package so you don't marry yourself to a particular
implementation...
DocumentBuilderFactory dbfactory =
DocumentBuilderFactory.newInstance();
dbfactory.setNamespaceAware(true);
Document doc = null;
try {
DocumentBuilder dbuilder = dbfactory.newDocumentBuilder();
InputStream = context.getResourceAsStream(/WEB-INF/mydoc.xml);
doc = dbuilder.parse(is);
}
catch (ParserConfigurationException pce) {}
catch (SAXException se) {}
catch (IOException ioe) {}
You can then grab a NodeList of some part of the document and iterate
through that or you can then use Jaxen to get to specific data with
XPath queries
try {
XPath xpath = new
DOMXPath(//MyElement[@myAttribute='someSpecificValue']/ AnotherElement);
Node node = (Node)xpath.selectSingleNode(domainDoc);
//now do something with the node
}
catch (XPathSyntaxException xse) {}
catch (JaxenException je) {}
If you know, in advance, all the elements you will need to read, then
you might want to write a SAX parser for your document. It will be
the fastest methodor you could use XML data binding using Zeus or
JAXB which will allow you to read in a whole document and access all
the data using standard Java Bean getters and set the values using
standard Java bean setters. In this case, you don't even need to
worry about XML since the fact that it is XML is totally hidden from
you. You can then marshal your updated object (assuming you modified
it) back to an XML document.
There are lots of ways to do this. Which way you choose depends on
your needs and what API's you feel most comfortable with.
Jake
At 07:29 PM 1/3/2003 -0600, you wrote:
I have a servlet and I want it to read it's data from an XML file.
There's more than one way of doing this task and I'm fishing for best
practices.
Can anyone provide me with some links to example code? I'm sure this
has been beaten to death and I don't want to reinvent the wheel.
Thanks!
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Filters, MVC, ResultSets
Hey All, Everyone says for performance purposes, working directly with the resultset is optimal. But, with MVC, we can't just push the RS to the JSP to display and ignore closing. Is it possible with Filters to do a M-C1-V-C2 where C1 sets resultsets in the request, then pushes the response up to the JSP to render the content and then closes the resultset after rendering. I know 'programatically' it would work, but, I'm wondering about exceptions and making sure that the resultsets get closed. An example would be passing the request/response to the JSP, but then an exception occurs up the chain, does the exception trickle back down through the filters no matter what to catch and close my JDBC items? Best Regards, Jacob Hookom
RE: Filters, MVC, ResultSets
I've been doing that with Strut's MVC, but I was hoping to set the filter up like
//do some processing
try
{
request.setAttribute(PEOPLE,resultSet);
//pass request response up the chain
}
catch (Exception e)
{
}
finally
{
resultSet.close();
pStmt.close();
connection.close();
}
This way, with the use of JSTL at the JSP, I can prevent newing multiple objects that
are request scoped (ojb, persistence layers, dao's aside ;-).
Regards,
Jacob
-Original Message-
From: German Augusto Niebles Alvarez [mailto:GERMNIAL;susalud.com.co]
Sent: Mon 10/28/2002 5:01 PM
To: [EMAIL PROTECTED]
Cc: Hookom, Jacob John
Subject:Re: Filters, MVC, ResultSets
I suggest you use vectors and beans (collection of beans) to poblate rs
and then close de resultset, and use a class to connect to database
(jdbchelper class), i send you an example:
// Obtiene la informacion acerca de la empresa
public Vector obtenerInformacionOrganizacion()
// throws SQLException,javax.naming.NamingException
{
Vector contenedorRazonSocial = new Vector();
Connection connection = null;
String selectRazonSocialStr =
SELECT * FROM tblRazonSocial;
PreparedStatement selectStatement = null;
try {
// Obtiene una conexion a la base de datos, requiere Try
connection = jdbcAccess.getConnection();
// Prepara la sentencia de Busqueda
selectStatement =
connection.prepareStatement(selectRazonSocialStr);
// Obtiene el resultset
ResultSet rs = selectStatement.executeQuery();
// Si el rs tiene next es que tiene un registro con la informacion
acerca de la empresa
FachadaRazonSocialBean facRazonSocialBean;
if (rs.next()) {
facRazonSocialBean = new FachadaRazonSocialBean();
facRazonSocialBean.setNit(rs.getString(nit));
facRazonSocialBean.setNombre(rs.getString(nombre));
facRazonSocialBean.setDireccion(rs.getString(direccion));
facRazonSocialBean.setTelefono(rs.getString(telefono));
facRazonSocialBean.setEMail(rs.getString(email));
facRazonSocialBean.setDireccionWeb(rs.getString(direccionWeb));
facRazonSocialBean.setCodigoIAC(rs.getString(codigoIAC));
contenedorRazonSocial.add(facRazonSocialBean);
}
contenedorRazonSocial.trimToSize();
// Cierra el Resultset
rs.close();
jdbcAccess.cleanup(connection, selectStatement,null);
}
// Area de obtencion de Excepciones
catch(NamingException ne) {
System.out.println(NamingException in JDBCAccess : + ne);
}
catch (SQLException sqle) {
System.out.println(SQLException in JDBCAccess: + sqle);
}
catch (Exception e)
{
System.out.println(Exception In JDBCAccess: + e);
}
finally {
return contenedorRazonSocial;
}
}
==
Atentamente,
Germán Niebles
Analista de Información
Tel 4-93-86-00 Ext 7053
[EMAIL PROTECTED] 10/28 4:39 p.m.
Hey All,
Everyone says for performance purposes, working directly with the
resultset is optimal. But, with MVC, we can't just push the RS to the
JSP to display and ignore closing.
Is it possible with Filters to do a M-C1-V-C2 where C1 sets
resultsets in the request, then pushes the response up to the JSP to
render the content and then closes the resultset after rendering. I
know 'programatically' it would work, but, I'm wondering about
exceptions and making sure that the resultsets get closed. An example
would be passing the request/response to the JSP, but then an exception
occurs up the chain, does the exception trickle back down through the
filters no matter what to catch and close my JDBC items?
Best Regards,
Jacob Hookom
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Realm Security Implementation Question [OT]
We are trying to figure out a way to handle realm-based security in a multi-application environement where users and their roles are specified in a DB. Users are stored in one table with password and there is a table for each application definining permissions for the user. I have been looking at the new JAASRealm the Craig put together, but I'm not sure if it's exactly what we need or if it's going overboard. Otherwise we have to represent roles in this manner: [applicationName]:[applicationId]:[role] and have a specialized realm do string parsing to validate roles within an application. Our applications are deployed under a single war to take advantage of a pseudo single sign-on. Any suggestions would be apprechiated, Jacob -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: filtering -- 2 servlets
you might want to look at implementing Filters to handle redirection that just checked the request and passes the user off. -Original Message- From: Mark Beecroft [mailto:[EMAIL PROTECTED]] Sent: Sun 7/21/2002 7:30 PM To: Tomcat Users List; Jacob Kjome Cc: Subject: filtering -- 2 servlets Good morning/afternoon/evening, I am using Tomcat 4 and have 2 servlets between which I would like to split processing. Servlet A needs to process all requests corresponding to the patterns *.html, *.html and /. Servlet B needs to process all other requests. The short question is how can I do this? I am currently using filters but am finding it difficult to cater for the pattern /. The only option seems to be the use of the url mapping /* to invoke a filter class, but then how does processing get to Servlet B? If I only invoke chain.doFilter() when the pathinfo satisfies the conditions of Servlet A then I can get Servlet A working normally, but there seems no way of ever invoking Servlet B with such a configuration. To demonstrate: http://www.domainname.com/index.html -- Servlet A http://www.domainname.com/whatever.htm -- Servlet A http://www.domainname.com/ -- servlet A http://www.domainname.com/image.jpeg -- no Servlet accessed What I really would like is a more versatile url-pattern element, but does anyone have a solution for my current situation... please... Cheers, Mark P.S. If you help me out I'll by you a pint when you next come to England! -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] winmail.dat -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
