Configuring log4j for maven

To debug: Add -Dlog4j.debug to the jvm parameters.

The files log4j.properties or log4j.xml must be on the classpath.

Easily import properties file in JUnit

Pass this parameter to the jvm:
-DPropertyManager.file=/path/to/props.properties

Then in the program:
import junitx.util.PropertyManager; // from http://sourceforge.net/projects/junit-addons/ ?
PropertyManager.getProperty("my.key");

Subversion on a Mac 10.4 (Tiger), behind a firewall

The Subversion project recommends:

• THIS ONE WORKS: MacPorts - has a .dmg installer for 10.4 
• need to set environment variable http_proxy if behind a firewall
• then the sudo port -v selfupdate command
• then do sudo port install subversion 
• Warning: The installed version of Xcode (2.3) is known to cause problems. Version 2.5 or later is recommended on Mac OS X 10.4. Download Xcode tools.
• Fink - wouldn't install for me, saying "Cannot perform symlink test on this volume because of a permissions problem". Running "Repair Disk Permissions" utility as recommended doesn't help at all.
• Apple's Developer Tools - I don't think it's on the CD. Couldn't find a list of apps anywhere. When I tried, it installed a lot of stuff but I couldn't see svn anywhere.
• OpenCollabNet - ?

Remove all login restrictions for MySQL

Start mysqld (or mysqld_safe) with the --skip-grant-tables option

Cocoon documentation

Current:

• Wiki: http://wiki.apache.org/cocoon/FrontPage (question about docs. Answer: Understand How ASF works)
• Official v2 site: http://cocoon.apache.org/
• Jira bug tracking: https://issues.apache.org/jira/browse/COCOON (issue about docs - there are several more issues regarding out-of-date contribution procedures)
• Cocoon 3 alpha: http://people.apache.org/~reinhard/c3-ref/html/
• List of mailing lists: http://svn.apache.org/repos/asf/cocoon/site/site/mail-lists.html (also a browsable SVN repository of the documentation website - will updating this fix the live site?)
• Main site mailing lists: http://cocoon.apache.org/2.1/1175.html
• Searchable mailing list archives: http://markmail.org/search/?q=list%3Aorg.apache.cocoon.users
• and http://markmail.org/search/?q=list%3Aorg.apache.cocoon.dev

Dead or out-of-date:

• org.apache.cocoon.docs - is this dead?
• This link to Cocoon Bugzilla is dead (it should be Jira now anyway): http://cocoon.apache.org/2.0/howto/howto-bugzilla.html
• Many of the links on this menu are dead: http://cocoon.apache.org/2.0/
• The "View, Edit or comment" link at the bottom of this page is dead: http://cocoon.apache.org/

Criticism:

• Struts vs. Cocoon: Why Cocoon lost the battle.
• The Death of XSLT in Web Frameworks

Use DBUnit

Add to the classpath:

• dbunit-2.4.7
• slf4j-api-1.6.1
• slf4j-simple-1.6.1
• mysql-connector-java-5.0.8

Example program:

import java.io.FileOutputStream;
import java.sql.*;
import org.dbunit.database.*;
import org.dbunit.dataset.*;
import org.dbunit.dataset.xml.*;
// database connection
Class driverClass = Class.forName("com.mysql.jdbc.Driver");
Connection jdbcConnection = DriverManager.getConnection("jdbc:mysql://host:port/dbname","user","pass");
IDatabaseConnection connection = new DatabaseConnection(jdbcConnection);
// prevent error: Potential problem found: The configured data type factory
// 'class org.dbunit.dataset.datatype.DefaultDataTypeFactory' might cause problems with the current database 'MySQL'
// (e.g. some datatypes may not be supported properly).
connection.getConfig().setProperty(DatabaseConfig.PROPERTY_DATATYPE_FACTORY, new MySqlDataTypeFactory());
// full database export
IDataSet fullDataSet = connection.createDataSet();
FlatXmlDataSet.write(fullDataSet, new FileOutputStream("dbname"));

Sprintf in Java

import java.text.MessageFormat;

int a = 3;
String b = "coders";

System.out.println(
    MessageFormat.format("{0} Java {1}.", String.format("%04d", a), b)
);