{Complexity} » Programming

magento upgrade

admin — Wed, 31 Aug 2011 18:15:46 +0000

rm -rf /var/cache session
./mage mage-setup .
./mage config-set preferred_state stable
./mage list-installed
./mage list-upgrades
./mage install http://connect20.magentocommerce.com/community Mage_All_Latest –force
./shell php indexer.php reindexall

app/etc/config.xml

SET NAMES utf8; SET FOREIGN_KEY_CHECKS=0; SET UNIQUE_CHECKS=0;

Magento payment do not continue

admin — Sat, 16 Oct 2010 20:11:28 +0000

app/design/frontend/yourtheme/youtemplate/layout/page.xml

…..

Magento display “Only X left Threshold”

admin — Tue, 14 Sep 2010 23:31:10 +0000

in layout/catalog.xml

Catalog Product View (Simple)

Catalog Product View (Simple)

Replace blank space in file name

admin — Thu, 08 Jul 2010 18:08:08 +0000

for f in *; do mv “$f” `echo $f | tr ‘ ‘ ‘_’`; done

Spring MVC + Tiles

admin — Mon, 14 Dec 2009 02:14:54 +0000

1. create web.xml
action org.springframework.web.servlet.DispatcherServlet 1 action *.do

2. create action-servlet.xml


  

    

    
  

	

    
  

    

      med

    

    

      userMain

    

  
  

  

    

  
  

	

	  

	    

	      /WEB-INF/UrlMap.properties

	    

	  

    

  
  

    

      

        /WEB-INF/tiles-def.xml

3. create TestController
package com.bluewiseinc.erp.common.web; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class TestController extends MultiActionController { public ModelAndView testMain(HttpServletRequest request, HttpServletResponse response) throws Exception { return new ModelAndView("test/test_main", "testMain", null); } }

4. UrlMap.properties
## test module mapping /test/index.do=testController

5. tiles-def.xml
"-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN" "http://tiles.apache.org/dtds/tiles-config_2_0.dtd">

6. message.properties
# Page titles index.title=Test Spring MVC + Tiles

7. default.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %> <%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %> <%@ taglib prefix="tiles" uri="http://tiles.apache.org/tags-tiles" %> <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <fmt:message key="index.title"/>

PHP Pear Image_Graph

admin — Tue, 01 Sep 2009 20:36:24 +0000

#apt-get install php-pear

#pear install Numbers_Words-0.16.1
#pear install Numbers_Roman-1.0.2
#pear install Image_Canvas-0.3.1
#pear install Image_Graph-0.7.2

(Download TrueType core fonts from http://corefonts.sourceforge.net/)
cp *.ttf /usr/share/php/Image/Canvas/Fonts

require_once '../../includes/include.php'; require_once 'Image/Graph.php'; require_once 'Image/Canvas.php'; date_default_timezone_set('America/New_York');


$customer_id = $_REQUEST[customer_id];

if (!$customer_id) exit();

$customer_data = get_order_customer_report_xy($customer_id);

if (!$customer_data) exit();
$Canvas =& Image_Canvas::factory('png', array('width' => 575, 'height' => 280));
// create the graph

$Graph =& Image_Graph::factory('graph', $Canvas);

// add a TrueType font

$Font =& $Graph->addNew('font', 'DejaVuSans');

$Font->setSize(8); 
$Graph->setFont($Font); 
// create the plotarea layout

$Graph->add(

    Image_Graph::vertical(

        Image_Graph::factory('title', array('', 11)),

        Image_Graph::vertical(

            $Plotarea = Image_Graph::factory('plotarea'),

            $Legend = Image_Graph::factory('legend'),

            90

        ),

        5

    )

);          
$Legend->setPlotarea($Plotarea);    
// create a grid and assign it to the secondary Y axis

$GridY2 =& $Plotarea->addNew('bar_grid', IMAGE_GRAPH_AXIS_Y_SECONDARY);

$GridY2->setFillStyle(

    Image_Graph::factory(

        'gradient',

        array(IMAGE_GRAPH_GRAD_VERTICAL, 'white', 'lightgrey')

    )

);     
list($year, $month) = split('[-.-]', $customer_data[0][1]);

$start=mktime(0,0,0,$month,1,$year);

$today=mktime(0,0,0,date('m'),1,date('Y'));

$interv=12-$month+(12*(date('Y')-$year-1))+date('m')+1;
// create a line plot

$Dataset1 =& Image_Graph::factory('dataset');

$Dataset2 =& Image_Graph::factory('dataset'); 
$max = 0;

for ($i=0; $i
        if ($max<$customer_data[$i][0]) $max=$customer_data[$i][0];

}

for ($i=0; $i<$interv; $i++) {

        $Dataset2->addPoint(date('m/y', mktime(0,0,0,$month,1,$year)), 0);

        $month++;

}

for ($i=0; $i
        list($year, $month) = split('[-.-]', $customer_data[$i][1]);

        $Dataset1->addPoint(date('m/y', mktime(0,0,0,$month,1,$year)), $customer_data[$i][0]);

}
$Plot1 =& $Plotarea->addNew('bar', array(&$Dataset1));

$Plot1->setLineColor('red'); 
$Plot2 =& $Plotarea->addNew(

    'Image_Graph_Plot_Area',

    $Dataset2,

    IMAGE_GRAPH_AXIS_Y_SECONDARY

); 
$Plot2->setLineColor('gray');

$Plot2->setFillColor('white@0.2'); 
$AxisX =& $Plotarea->getAxis(IMAGE_GRAPH_AXIS_X);

$labInterv = floor($interv / 13);

$AxisX->setLabelInterval($labInterv);

$AxisY =& $Plotarea->getAxis(IMAGE_GRAPH_AXIS_Y);

$AxisY->setTitle('Orders', 'vertical');

$AxisYsecondary =& $Plotarea->getAxis(IMAGE_GRAPH_AXIS_Y_SECONDARY);

// output the Graph $Graph->done(); db_close() ?>

SwingWorker not on Java 6.0

admin — Thu, 24 Apr 2008 14:15:08 +0000

SwingWorker is useful when a time-consuming task has to be performed following a user-interaction event (for example, parsing a huge XML File, on pressing a Button). The most straightforward way to do it is :

[sourcecode language='java']
private Document doc;
…
JButton button = new JButton(“Open XML”);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
doc = loadXML();
}
});
[/sourcecode]

This will work, but unfortunately, the loadXML() method will be called in the same thread as the main Swing thread, so if the method needs time to perform, the GUI will freeze during this time.

[sourcecode language='java']
package com.wsjoung.demo;
import javax.swing.SwingUtilities;

public abstract class SwingWorker {
// see getValue(), setValue()
private Object value;
private Thread thread;

private static class ThreadVar {
private Thread thread;
ThreadVar(Thread t) { thread = t; }
synchronized Thread get() { return thread; }
synchronized void clear() { thread = null; }
}

private ThreadVar threadVar;

protected synchronized Object getValue() {
return value;
}

private synchronized void setValue(Object x) {
value = x;
}

public abstract Object construct();

public void finished() {
}

public void interrupt() {
Thread t = threadVar.get();
if (t != null) {
t.interrupt();
}
threadVar.clear();
}

public Object get() {
while (true) {
Thread t = threadVar.get();
if (t == null) {
return getValue();
}
try {
t.join();
}
catch (InterruptedException e) {
// propagate
Thread.currentThread().interrupt();
return null;
}
}
}

public SwingWorker() {
final Runnable doFinished = new Runnable() {
public void run() { finished(); }
};

Runnable doConstruct = new Runnable() {
public void run() {
try {
setValue(construct());
}
finally {
threadVar.clear();
}

SwingUtilities.invokeLater(doFinished);
}
};

Thread t = new Thread(doConstruct);
threadVar = new ThreadVar(t);
t.start();
}
}
[/sourcecode]

SwingWorker.java

[sourcecode language='java']
public class Task{
public void go() {
current = 0;
final SwingWorker worker = new SwingWorker() {
public Object construct() {
return new ActualTask();
}
};
}

class ActualTask {
ActualTask() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {}
}
}
}
[/sourcecode]

Task.java

what's static?

admin — Mon, 14 Apr 2008 19:31:25 +0000

First of all, the meaning of static in java is embedded or belong to a specific class not to its instance, and therefore there is no such static class.

There is no such static class
Embedded or belong to a specific class
Global variable
No need to load and create its instance

Most of methods and variables in Math class are static, because those are not need to be instanced in most of cases. we just use return value of PI or max(int a, int b).

class Bicycle {

private static int numberOfBicycles = 0;
private int id;

public Bicycle() {
id = ++numberOfBicycles;
}

public static int getNumberOfBicycles() {
return numberOfBicycles;
}
public int getID() {
return id;
}

public static void main(String[] args) {
Bicycle b1 = new Bicycle();
Bicycle b2 = new Bicycle();

System.out.println(“static result : “+getNumberOfBicycles());
System.out.println(“static result : “+numberOfBicycles);
System.out.println(“instance result : “+b1.getID());
System.out.println(“instance result : “+b2.getID());
}
}

Another characteristic of static is that even if we create instance of a class, jvm does not create instance variables for static resources. in above source code, there is no difference calling b1.getNumberOfBicycles(), b2.getNumberOfBicycles() and just getNumberOfBicycles() or directly numberOfBicycles
that mean we should call static variable with its class name because it’s belong to it. just like Bicycle.numberOfBicycles or in this example, getNumberOfBicycles() because we have a getter.
otherwise get confused.

javamail smtp with Gmail

admin — Fri, 03 Aug 2007 18:29:57 +0000

package com.mycompany.emailsender;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.security.Security;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

/**
* Servlet implementation class for Servlet: GmailSender
*
*/
public class GmailSender extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#HttpServlet()
*/
public GmailSender() {
super();
}

/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}

/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
final String SMTP_HOST_NAME = “smtp.gmail.com”;
final int SMTP_HOST_PORT = 465;
final String SMTP_AUTH_USER = “XXXXXX@gmail.com”;
final String SMTP_AUTH_PWD = “XXXXXX”;
final String SSL_FACTORY = “javax.net.ssl.SSLSocketFactory”;

String emailFromAddress = null;
String[] sendTo = null;
String subject = null;
String content = null;

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

String address = request.getParameter(“address”);
sendTo = address.split(“;”);

emailFromAddress = request.getParameter(“sender”);
this.subject = request.getParameter(“title”);
this.content = request.getParameter(“content”);

try {
for (int i=0; i sendSSLMessage(sendTo[i]);
}
System.out.println(“Sucessfully Sent mail to All Users”);

} catch (Exception e) {System.out.println(e);}
}

public void sendSSLMessage(String dest) throws MessagingException {

Properties props = new Properties();

props.put(“mail.transport.protocol”, “smtps”);
props.put(“mail.smtps.host”, SMTP_HOST_NAME);
props.put(“mail.smtps.auth”, “true”);
props.put(“mail.smtps.quitwait”, “false”);

Session mailSession = Session.getDefaultInstance(props);
mailSession.setDebug(false);
Transport transport = mailSession.getTransport();

MimeMessage message = new MimeMessage(mailSession);
message.setSubject(subject);
InternetAddress addressFrom = new InternetAddress(emailFromAddress);
message.setFrom(addressFrom);
message.setContent(content, “text/html”);

message.addRecipient(Message.RecipientType.TO,new InternetAddress(dest));

transport.connect(SMTP_HOST_NAME, SMTP_HOST_PORT, SMTP_AUTH_USER, SMTP_AUTH_PWD);

transport.sendMessage(message,message.getRecipients(Message.RecipientType.TO));
transport.close();
}
}

reference: http://www.rgagnon.com/javadetails/java-0083.html

Signed java applet

admin — Tue, 15 May 2007 17:43:00 +0000

Applet Security Basics

Below are the basic facts regarding applet security and Java Plug-in. More detail can be found in the next chapter, How RSA Signed Applet Verification Works in Java Plug-in.

All unsigned applets are run under the standard applet security model.
If usePolicy IS NOT DEFINED in the java.policy file, then a signed applet has the AllPermission permission if:
Java Plug-in can verify the signers, and the user, when prompted, agrees to granting the AllPermission permission.
If usePolicy IS DEFINED, then a signed applet has only the permissions defined in java.policy and no prompting occurs.

Moreover, note that Java Plug-in now handles certificate management; i.e., the certificate verification task is no longer passed off to the browser.

keytool -genkey -keyalg rsa -alias MyCert
keytool -certreq -alias MyCert
keytool -import -alias MyCert -file VSSStanleyNew.cer

keytool -selfcert

and

jarsigner AppletName.jar MyCert
jarsigner -verify -verbose -certs AppletName.jar

Java Plugin guide