I have a Java application in Tomcat 5.5 that works fine, but it creates
several PostgreSQL processes: <IDLE> in transaction, and they just sit there
forever. I've updated my library jar files as follows:
iBatis lib file: ibatis-2.3.4.726.jar
JDBC driver: postgresql-8.3-605.jdbc3.jar
The PostgreSQL database server - 8.3.7, using Apache Struts2 -- this is an
action implementation. I've tried to reduce its code here to a bare minimum
to simplify location of the error. There are two classes involved, and the
call is to method listOfArtists() in class: ListSwingCatAction.
(1)
public class ListSwingCatAction implements SessionAware
{
private SqlMapClient sqlMap;
private SwingCatIBatisDBHandler myDBHandler;
private Map sessionMap;
public ListSwingCatAction()
{
try
{
sqlMap =
SqlMapClientBuilder.buildSqlMapClient(Resources.getResourceAsReader("sqlMaps.xml"));
}
catch (Exception e)
{
e.printStackTrace();
throw new RuntimeException ("Error initializing my SwingCat class.
Cause: " + e);
}
myDBHandler = new SwingCatIBatisDBHandler(sqlMap);
}
public String listOfArtists()
{
ArrayList artists = myDBHandler.getArtistInfo();
sessionMap.put("artists", artists);
return "success";
}
}
(2)
public class SwingCatIBatisDBHandler
{
private SqlMapClient sqlMap;
private List list = null;
public SwingCatIBatisDBHandler(SqlMapClient sqlMap)
{
this.sqlMap = sqlMap;
}
public ArrayList getArtistInfo()
{
ArrayList artists;
try
{
sqlMap.startTransaction();
//artists is an array of Artists objects -- the list parameter is a
dummy
artists = (ArrayList) sqlMap.queryForList("getArtistInfo", list );
sqlMap.commitTransaction();
}
catch(SQLException e)
{
e.printStackTrace();
throw new RuntimeException ("Error executing sqlMap query. Cause: "
+ e);
}
finally
{
try
{
sqlMap.endTransaction();
}
catch(SQLException e)
{
e.printStackTrace();
throw new RuntimeException ("Error executing sqlMap query.
Cause: " + e);
}
}
return artists;
}
}
(3) sqlMaps.xml file:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE sqlMapConfig
PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-config-2.dtd";>
<sqlMapConfig>
<properties resource="ibatis.properties" />
<settings
cacheModelsEnabled="true"
enhancementEnabled="true"
lazyLoadingEnabled="true"
useStatementNamespaces="false" />
<transactionManager type="JDBC">
<dataSource type="DBCP">
<property name="driverClassName" value="${driver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
<property name="logAbandoned" value="true"/>
<property name="removeAbandoned" value="true"/>
<property name="removeAbandonedTimeout" value="1"/>
<property name="Driver.logUnclosedConnections" value="true"/>
</dataSource>
</transactionManager>
<sqlMap resource="swingCat-sqlMap.xml" />
</sqlMapConfig>
It's probably something very simple, but for the life of me I can't see my
problem. Any help you can give me would be VERY MUCH apprciated! Thank
you.
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