Notes by nogeek

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Created by nogeek on December 30, 2011 13:25:28    Last update: December 30, 2011 13:57:37
By default, tomcat uses an enhanced java.util.logging implementation called JULI, which can be configured at two different levels: Globally, with the ${catalina.base}/conf/logging.properties file. Per web application, with WEB-INF/classes/logging.properties . The configuration file is a normal Java properties file: Logging handlers are specified with the handlers property. handlers = 1catalina.org.apache.juli.FileHandler, ... The root logger can define its set of handlers using the .handlers property. .handlers = 1catalina.org.apache.juli.FileHandler,... A prefix may be added to handler names. The prefix starts with a digit and ends with a dot ( . ), for example: # 1catalina. is a prefix 1catalina.org.apache.j... System property replacement is performed for property values which contain ${systemPropertyName} . Each handler can have its own specific properties: 3manager.org.apache.juli.FileHandler.level = FINE ... Loggers can define their own...
Created by nogeek on December 29, 2011 13:31:44    Last update: December 29, 2011 14:29:13
Tomcat allows you to create multiple server instances for the same installation. The installation directory is identified as CATALINA_HOME , the instance directory is identified as CATALINA_BASE . Here are the steps: Create a base directory for the new instance, for example: /home/nogeek/tomcat1 . Create the subdirectories: mkdir -p /home/nogeek/tomcat/{bin,conf,logs,temp,w... Copy web.xml from the installation directory: cp $CATALINA_HOME/conf/web.xml /home/nogeek/tomcat... Copy logging.properties from the installation directory: cp $CATALINA_HOME/conf/logging.properties /home/no... Create server.xml under tomcat1/conf : <?xml version='1.0' encoding='utf-8'?> <Server ... Create script setenv.sh under tomcat1/bin : # Edit this file to set custom options # Tomcat... Copy startup.sh and shutdown.sh from the installation directory. Add the following two lines to the beginning of each: CATALINA_BASE=/home/nogeek/tomcat1 export CATAL... Create a soft link for catalina.sh in tomcat1/bin : $ ln -s ~/apache-tomcat-7.0.22/bin/catalina.sh cat...
Created by nogeek on November 27, 2011 12:24:27    Last update: November 27, 2011 12:24:27
There is no XSLT 2.0 support in the JDK as of 7.0. According to Stackoverflow , there are three Java packages that support XSLT 2.0: Saxon IBM WebSphere XML Feature Pack Oracle XDK There are no known support for XSLT in browsers. According to Wikipedia : XSLT is developed by the World Wide Web Consortium (W3C). The most recent version is XSLT 2.0, which reached W3C recommendation status on 23 January 2007. As of 2010, however, XSLT 1.0 is still widely used, as there are no products that support XSLT 2.0 running in the browser, nor on some important server environments such as LAMP. Expressions like this: format-date(xs:date('1999-12-31'), '[D01] [MNn] ... where format-date is a XSLT 2.0 function and date is a XPath 2.0 constructor...
Created by nogeek on November 03, 2010 20:52:49    Last update: November 23, 2011 08:54:44
My problem is simple: in my XML data, a timestamp is provided as a long integer (number of milliseconds since the "the epoch"). When I do XSLT, I want to display it as a readable string, such as "Mon Nov 01 18:08:48 CDT 2010". After hours of struggle, I found: It's not so easy to get the job done with JDK 1.6 There are tons of garbage on the web in this space (suggestions, code snippets that simply don't work) Simple Xalan extension functions was the only resource that's somewhat informative. Even there some of the examples don't work. Below is a list of what worked and what didn't. This works: <xsl:stylesheet version="1.0" xmlns:xsl="h... This does not (providing long value to Date constructor): <xsl:stylesheet version="1.0" xmlns:xsl="h......
Created by nogeek on November 17, 2011 14:30:28    Last update: November 17, 2011 14:30:28
CATALINA_HOME is the root directory where Tomcat is installed. CATALINA_BASE is the same as CATALINA_HOME for single instance Tomcat configuration. For multiple instance configurations CATALINA_BASE is the root of that instance. The startup script prints out the values of CATALINA_HOME and CATALINA_BASE at startup: Using CATALINA_BASE: "C:\Apps\tomcat-7.0.22" ...
Created by nogeek on April 07, 2011 21:30:54    Last update: April 07, 2011 21:30:54
This is the opposite of parsing. You can use javax.xml.transform.Transformer to output a DOM tree to a file. import java.io.*; import javax.xml.parsers.Docu...
Created by nogeek on April 07, 2011 21:07:55    Last update: April 07, 2011 21:07:55
You can use the javax.xml.transform.Transformer class to "transform" an XML stream (string in this case) to a DOM tree - effectively parsing the XML string. import java.io.*; import javax.xml.transform.Tr...
Created by nogeek on April 07, 2011 20:54:17    Last update: April 07, 2011 20:54:17
Use javax.xml.parsers.DocumentBuilder to parse xml. DocumentBuilder.parse() takes: java.io.File org.xml.sax.InputSource java.io.InputStream java.lang.String as a URI to an XML document Example code: import java.io.*; import javax.xml.parsers.Docu...
Created by nogeek on February 08, 2011 13:46:18    Last update: February 08, 2011 13:46:18
Simple Java code that does XSLT on an XML file. The transform results go to STDOUT. import java.io.*; import javax.xml.parsers....
Created by nogeek on December 31, 2010 12:41:05    Last update: December 31, 2010 12:41:05
The JBoss JARStructure class determines whether a deployment, in the form of a file or a directory, represents a packaged or unpackaged JAR archive. If the deployment is a single file then the filename suffix is checked against the following list. If the deployment is a directory then the same check is performed using the directory name. If a match is found in either case, then the deployment is considered a JAR archive. A top level directory is always considered an unpackaged JAR archive, even when the suffix does not match. .zip - a standard archive .jar - a java archive (defined by the Java SE specification) .ear - an enterprise archive (defined by the Java EE specification) .rar - a resource archive (defined by...
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