Help - JSC to Tomcat with MySql

Question

I built a simple test app in JSC with MySql.
Product: MySql Ver. 5.0.27-community-nt
Database name: Test
Table name: testtable
Datasource name: MySql1
Dataprovider's SQL: SELECT ALL testtable.code, testtable.name FROM testtable WHERE testtable.name LIKE ?
The page had a textfield, button, statictext and a table mapped to the dataprovider
The following code was included:
public void prerender() {
try {
String s = "";
String t = (String) textField1.getText();
if (t == null || t.equals(""))
s = "";
else
s = t;
s += "%";
staticText3.setText(s);
getSessionBean1().getTesttableRowSet().setObject(1,s);
getSessionBean1().getTesttableDataProvider().refresh();
} catch (Exception e) {error(e.toString());}
public String button1_action() {
return null;
When tested in JSC, it worked fine.
But when I exported it as a war file and deployed it in Tomcat 5.5.17 with the following settings, the statictext
displayed the selected value, but the table showed "No items found". Please help.
User: root
password: adminadmin
Connector downloaded: mysql-connector-java-5.0.4.zip
The appropriate jstl.jar and standard.jar where used by copying them from jakarta
The tomcat's server.xml used is shown below:
<?xml version="1.0" encoding="UTF-8"?>
<Server>
<Listener className="org.apache.catalina.core.AprLifecycleListener"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
<Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
<GlobalNamingResources>
<Environment
name="simpleValue"
type="java.lang.Integer"
value="30"/>
<Resource
auth="Container"
description="User database that can be updated and saved"
name="UserDatabase"
type="org.apache.catalina.UserDatabase"
pathname="conf/tomcat-users.xml"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"/>
<Resource
name="jdbc/Travel"
type="javax.sql.DataSource"
driverClassName="org.apache.derby.jdbc.ClientDriver"
password="travel"
maxIdle="2"
maxWait="5000"
validationQuery="select * from TRAVEL.PRODUCT"
username="travel"
url="jdbc:derby://localhost:21527/samp"
maxActive="4"/>
</GlobalNamingResources>
<Service
name="Catalina">
<Connector
port="8080"
redirectPort="8443"
minSpareThreads="25"
connectionTimeout="20000"
maxThreads="150"
maxSpareThreads="75">
</Connector>
<Connector
port="8009"
redirectPort="8443"
protocol="AJP/1.3">
</Connector>
<Engine
defaultHost="localhost"
name="Catalina">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
<Host
appBase="webapps"
name="localhost">
<Context
path="/TomTest">
</Context>
<Context
path="/TradeMeTender">
<Resource
auth="Container"
description="Creator generated DataSource Reference"
name="jdbc/Travel"
type="javax.sql.DataSource"
driverClassName="org.apache.derby.jdbc.ClientDriver"
password="travel"
maxIdle="2"
maxWait="5000"
validationQuery="SELECT * from TRAVEL.PRODUCT"
username="travel"
url="jdbc:derby://localhost:21527/sample"
maxActive="4"/>
</Context>
<Context
path="/FileUploadExample">
<EJB
home="greeting.GreeterHome"
name="GreeterEJB"
remote="greeting.Greeter"
type="Session"/>
</Context>
     <Context path="/MySqlTest" docBase="MySqlTest"
     debug="5" reloadable="true" crossContext="true">
          <Resource name="jdbc/MySql1" auth="Container" type="javax.sql.DataSource"
maxActive="100" maxIdle="30" maxWait="10000"
username="root" password="adminadmin" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/Test?autoReconnect=true"/>
     </Context>
</Host>
</Engine>
</Service>
</Server>

Answer 1

You could track JDBC calls and the SQL's executed by the driver at the database,
Update you datasource, DBURL with some parameters/properties to generate some info for debugging like this:
jdbc:mysql://$hostname:$port/$databasename?autoGenerateTestcaseScript=true&dumpQueriesOnException=true
Check out your deployment containers log to find out which particular SQL statement is being executed. This could help in identifying performance issues with application. That could possibly give a clue, if something is not working in your application.
For designtime JDBC calls made, this info is sent to IDE log.
Reference: http://dev.mysql.com/doc/refman/5.0/en/cj-configuration-properties.html
HTH,
Sakthi