Javascript undefined Explained

http://javascriptweblog.wordpress.com/2010/08/16/understanding-undefined-and-preventing-referenceerrors/

Maven POM

• all POM inherits from Super POM
• if the configuration details are not specified in your POM, Maven will use their defaults(from Super POM)
• to display the final POM (Super POM + your own POM) generated, use command:

  mvn help:effective-pom

• hot to skip tests: http://maven.apache.org/plugins/maven-surefire-plugin/examples/skipping-tests.html

Source: http://maven.apache.org/guides/introduction/introduction-to-the-pom.html

Basic UNIX commands

• man - manual/help
• pwd - print working/current directory
• ls - list files
• ls -l - lists files in 'long format', which contains lots of useful information, e.g. the exact size of the file, who owns the file and who has the right to look at it, and when it was last modified
• cd - change directory
• mkdir [dir] - creates dir
• rmdir [dir] - removes dir
• more [options] file(s) - Display contents of files
• less [options] file(s) - Display contents of files
  Useful commands while viewing a file with 'more' or 'less':
  • <spacebar> - scroll forward one page
  • ^b (control-b) - scroll backward one page
  • /<text> - search for string
  • n - find next occurence of string
  • N - find previous occurence of string (search for string in opposite direction)*
  • g - go to the beginning of the file*
  • G - go to the end of the file*
  • v - edit the current file with 'vi'*
  • :n - go to the next file*
  • :p - go to the previous file*
  • q - quit
  *works in 'less', not 'more'
• grep [options] <pattern> [files] - search inside files for the given pattern
  Useful options:
  • -i - ignore case
  • -r or -R - search files in directories/subdirectories recursively
  • -v - nvert match: select non-matching lines
• tail [options] [filenames] - show tail/end of file
• tail -f temp.log - follow/monitor the file, display the last 10 lines of temp.log and append new lines to the display as new lines are added to temp.log
• vi filename - edit the file
  Modes:
  • command mode - letters of the keyboard will be interpreted as commands
  • insert mode - letters of the keyboard will type or edit text
  Useful commands:
  • x - deletes the character the cursor is under
  • dd - deletes the line the cursor is on
  • a - append after the cursor
  • i - insert before the cursor
  • ESC - non edit mode
  • :wq - saves the current changes and exits vi
  • :w - saves the current changes but does not exit vi
  • :q - exits vi without saving any change

References:
http://claymore.rfmh.org/public/computer_resources/unix_commands.html
http://mally.stanford.edu/~sr/computing/basic-unix.html
http://cmgm.stanford.edu/classes/unix/vi.html
http://en.wikipedia.org
http://www.ccsf.edu/Pub/Fac/vi.html

Installing your own jar into Local Repository

• Update your maven setting to point the localRepository to where you want to install the jar
  
  1. Go to <MAVEN_HOME>\conf directory
  2. Open settings.xml and change <localRepositorygt; tag to the path where you want to install the jar file
• In command prompt, type:
  

  mvn install:install-file -Dfile=your-artifact-1.0.jar \
                           [-DpomFile=your-pom.xml] \
                           [-Dsources=src.jar] \
                           [-Djavadoc=apidocs.jar] \
                           [-DgroupId=org.some.group] \
                           [-DartifactId=your-artifact] \
                           [-Dversion=1.0] \
                           [-Dpackaging=jar] \
                           [-Dclassifier=sources] \
                           [-DgeneratePom=true] \
                           [-DcreateChecksum=true]
  
  Where: <path-to-file>  the path to the file to load
     <group-id>      the group that the file should be registered under
     <artifact-id>   the artifact name for the file
     <version>       the version of the file
     <packaging>     the packaging of the file e.g. jar

  
  Sample:
  mvn install:install-file -Dfile=C:\bel\docs\lib\jxl-2.6.3.jar -DgroupId=jexcelapi -DartifactId=jxl -Dversion=2.6.3 -Dpackaging=jar -DgeneratePom -DcreateChecksum=true


• In your repository, you will find the new jar installed
• To use the jar, add it in your pom.xml like:
  

  <dependency>
   <groupId>jexcelapi</groupId>
   <artifactId>jxl</artifactId>
   <version>2.6.3</version>
  </dependency>

Maven Setup

1. Install Maven
2. Update {MAVEN_HOME}\conf\settings.xml
   Update the following:
   
   • localRepository
   • proxies
   • profiles
   • activeProfiles

Deployment

1. Create the package for full release
   1. Check out the Project in Eclipse
      
      1. Open SVN Repositories. Click Window->Open Perspective->SVN Repository Browser
      2. Assuming that you already have Repository Location set up, find the project in the trunk or branches
         
      3. Right click project then click Show History to ensure that it has the latest change/fix needed
         
      4. Tag or make a branch out of the project. Right click project then click New->Tag or Branch
         
      5. Right click newly created tag/branch then click Show History to ensure that the it has the latest change/fix needed
         
      6. Check out the newly created tag or branch. Right click project the click Check Out
   
   
   2. Build the package
      
      1. In the console, go to emea-pom of the checked out project
      2. Type

         mvn clean package –DemeaVersion=${currentversion}

      3. After a successful build, go to the emea-release project and copy the whole target folder in a different directory.


2. Generate the config files/folders of the package
   
   1. Create a config folder inside the target folder or where the jar is located
      
   2. Create folders dev, sit, uat and prod inside config folder
      
   3. Open you FTP Client (e.g. FileZilla) and copy the config files to the newly created folders
      
      • DEV
        
      • SIT
        
      • UAT
        
      • PROD
        
   4. Update the ini file with the changes from project and change the VERSION property


3. Deploy DEV using the exploded jar
   
   1. In FileZilla, upload/add target/classes/versions to /ams/domains/ACCTSVCS102/versions
      
   2. In FileZilla, copy target/config/dev to/ams/domains/ACCTSVCS102/versions/config
      
   3. On DEV WEBLOGIC, stop and delete previously deployed ear
      
   4. Open Putty and login to DEV (ehdeapp10v.uk.jpmorgan.com)
      
   5. Point latest to latest deployed version
      
      
      1. Go to /ams/domains/ACCTSVCS102/versions/biz-rules
         
      2. Type rm latest
         
      3. Type ln -s {newversionFolder} latest
         
      4. Do step 1-3 to config & emea folders as well
   
   
   6. On DEV WEBLOGIC, deploy new ear and start
      
   7. Delete temporary files
      
      
      
      1. Go to /ams/domains/ACCTSVCS102/scripts and type stop_all.sh
         
      2. Go to /ams/domains/ACCTSVCS102/servers/admACCTSVCS
         
      3. Delete tmp folder. Type rm -rf {folderName}
         
      4. Go to /ams/domains/ACCTSVCS102/servers/mngACCTSVCS
         
      5. Delete tmp & stage folder
         
      6. Go to /ams/domains/ACCTSVCS102/scripts and type start_all.sh
   
   
   8. Check server: DEV


4. Copy package(jar) and config files to SIT (ehdeapp10v.uk.jpmorgan.com), /home/eis_dev/a_pfdv01/AMSNA


5. Create JIRA


6. Finish!

Common DB2 SQLCODE

SQLCODE	Description
-301	THE VALUE OF INPUT HOST VARIABLE OR PARAMETER NUMBER position-number CANNOT BE USED AS SPECIFIED BECAUSE OF ITS DATA TYPE
-302	THE VALUE OF INPUT VARIABLE OR PARAMETER NUMBER position-number IS INVALID OR TOO LARGE FOR THE TARGET COLUMN OR THE TARGET VALUE
-440	THE NUMBER OF PARAMETERS IN THE PARAMETER LIST DOES NOT MATCH THE NUMBER OF PARAMETERS EXPECTED FOR STORED PROCEDURE name, AUTHID authid, LUNAME luname. number PARAMETERS WERE EXPECTED.
-551	auth-id DOES NOT HAVE THE PRIVILEGE TO PERFORM OPERATION operation ON OBJECT object-name

Complete list: http://www.caliberdt.com/tips/sqlcode.htm

Getting started with Ant

A(nother) N(eat) T(ool)

What is Apache Ant?
http://ant.apache.org/

Download bin:
http://ant.apache.org/bindownload.cgi

Getting started with Maven

Apache Maven is a software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project's build, reporting and documentation from a central piece of information.

Download and extract bin from http://maven.apache.org/download.html

Basics:
http://maven.apache.org/guides/getting-started/maven-in-five-minutes.html

To install a package into your local repository:
1) Open <MAVEN_HOME>/conf/settings.xml
2) Set the local repository
<localRepository>S:/bel/repo</localRepository>
3) Set profile
4) Set what profile to activate
5) Set proxy (optional?)
6) Run mvn install (if variables are needed, add -D{varname}={varValue}). To skip test add <skipTests>true</skipTests> on pom.xml (inside properties tag). To set a default/permanent variable, set it in MAVEN_OPTS environment variable

How to set MAVEN_OPTS
-> set MAVEN_OPTS=-Xmx512M -XX:MaxPermSize=128M
-> add in mvn.bat
1) edit <MAVEN_HOME>/bin/mvn.bat
2) add SET MAVEN_OPTS=-Dmaven.test.skip=true

Note:
- dependencies -> mvn install copies all libraries first from WEB-INF/lib to the snapshot lib before downloading all dependencies declared in pom into the snapshot lib. so make sure to always clean up WEB-INF/lib first before executing mvn install to remove any conflicting jars

Source: http://maven.apache.org/

Getting started with Weblogic

Download: http://www.oracle.com/technetwork/middleware/weblogic/overview/index.html

Object Oriented Javascript

Object Constructor

function Cat(name) {
  this.name = name;
  this.talk = function() {
     alert( this.name + " say meeow!" )
  }
}

Creating Objects

• using constructor of defined object
  

  myCat = new Cat("Kuting");
  

• using new Object()
  

  person = new Object()
  person.name = "Bel"
  person.run = function() {
    this.state = "running"
    alert( this.name + " is running!" )
  }

• using literal notation
  

  person = {
     name : "Bel",
     siblings : ["Ana", "Marie"],
     run : function(){this.state = "running"; alert( this.name + " is running!" )}
  };

Prototyping - attaching a method to an object

Cat.prototype.changeName = function(name) {
   this.name = name;
}

References:
http://www.javascriptkit.com/javatutors/oopjs.shtml

Javascipt Basics

javascript

Getting started with Ext JS

Ext JS is a client-side, JavaScript framework for building web applications.

1. Download most current Ext JS release
   - http://www.sencha.com/products/js/download.php
2. Set the URL of s.gif
   

   Ext.BLANK_IMAGE_URL = '/images/ext/resources/images/default/s.gif';

Reference:
http://www.sencha.com/learn/Learn_About_the_Ext_JavaScript_Library