$ du -ks csd_images 80200 csd_images
$du -sh csd_images
UNIX: directory size
This command calculates the size of the directory and gives it in Kb
(80200 = 80.2 Mb):
DAO: creating new model
1. Write a model class with annotations.
2. Run hibernate3:hbm2ddl to create database scripts.
3. Write DAO interface.
4. Write jUnit test for DAO and make sure that they fail initially.
5. Implement DAO.
6. Pass jUnit test with all possible inputes to verify that DAO methdod work.
Baby Steps
Good code is a succession of small programming steps that would eventually create a well-written functionality.
In order to create a clean, simple, and functional code, it is good to follow some of the best practices of programming:
Let's say we want to create UI with following functionalities:
- List
- Add
- Edit
- Delete items
1) Create a skeleton UI with "comming soon.." text, you test and commit code.
2) Make a fake, hardcoded list and you display it , you test and commit code.
3) Fetch the list via a service call that returns a fake list, , you test and commit code.
4) Implement the DAO , you test and commit.
5) Connect all pieces, you test and commit.
Now you have the "list" and you can move to the "add" functionality.
Java: getting the size of File Directory
/**
* @author UkiDLucas
* @return size of file or directory in bytes [ use: long bytesToMb(long bytes) ]
**/
public static long calcFileDirectorySize(File directory)
{
if (directory.isFile())
return directory.length();
long size = 0;
for (File file : directory.listFiles())
{
size += calcFileDirectorySize(file);
}
return size;
}
public static double bytesToMb(long bytes)
{
return (bytes / 1024 / 1024);
}
Axis: installation
Axis installation
in your ~/bashrc set up the following variables (make sure you re-run the bashrc):
Be aware Axis 4.1.1 brings dependency for the AXIS 1.2-RC1.jar which is NOT compatible with the newest AXIS 1.4!!!
add dependencies to the project, this will copy the jars to your local box ~/.m2/repository:
Axis installation is mentioned on: AXIS
|
in your ~/bashrc set up the following variables (make sure you re-run the bashrc):
|
Be aware Axis 4.1.1 brings dependency for the AXIS 1.2-RC1.jar which is NOT compatible with the newest AXIS 1.4!!!
add dependencies to the project, this will copy the jars to your local box ~/.m2/repository:
|
Axis installation is mentioned on: AXIS
Axis: WSDD
To list already deployed services
|
the content displayed is same as server-config.wsdd file
for example...
|
Web Service Deployment Descriptor
|
Axis WSDD is mentioned on: AXIS
Axis: Spring configuration
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring_axis-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>springaxis</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring_axis</servlet-name>
<url-pattern>*.axis</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>AxisServlet </servlet-name>
<display-name>Apache-Axis Servlet</display-name>
<servlet-class>org.apache.axis.transport.http.AxisServlet</servlet-class>
<load-on-startup>5</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>AxisServlet</servlet-name>
<url-pattern>/soap/*</url-pattern>
</servlet-mapping>
Axis: building using ant
<!-- Generate WSDL -->
<target name="generateAuthenticationWSDL" depends="compile">
<axis-java2wsdl
classname="com.hmco.morse.authentication.service.RemoteAuthenticationService"
namespace="urn:AuthenticationWS"
location="${soap.service}/AuthenticationWS"
output="${project.config.dir}/AuthenticationWS.wsdl">
<mapping namespace="urn:AuthenticationWS" package="com.hmco.morse.authentication.service"/>
</axis-java2wsdl>
</target>
<!-- Generate WSDL -->
<target name="generateAuthenticationWrappedWSDL" depends="compile">
<axis-java2wsdl
classname="com.hmco.morse.authentication.service.RemoteAuthenticationService"
namespace="urn:AuthenticationWS"
location="${soap.service}/AuthenticationWS"
output="${project.config.dir}/AuthenticationWS.wsdl"
style="wrapped">
<mapping namespace="urn:AuthenticationWS" package="com.hmco.morse.authentication.service"/>
</axis-java2wsdl>
</target>
<!-- Generate Client And Move Descriptors -->
<target name="generateAuthenticationClient">
<axis-wsdl2java
url="${project.config.dir}/AuthenticationWS.wsdl"
output="${java2wsdl.output.dir}"
deployscope="request"
serverSide="yes"
verbose="true"
helpergen="false">
<mapping namespace="urn:AuthenticationWS" package="com.hmco.morse.authentication.service"/>
</axis-wsdl2java>
<antcall target="moveAxisDescriptors"/>
</target>
<target name="moveAxisDescriptors">
<echo message="moving: ${java2wsdl.output.dir}/com/hmco/morse/authentication/service/deploy.wsdd"/>
<move file="${java2wsdl.output.dir}/com/hmco/morse/authentication/service/deploy.wsdd" todir="${project.deploy.dir}" failonerror="false"/>
<echo message="moving: ${java2wsdl.output.dir}/com/hmco/morse/authentication/service/undeploy.wsdd"/>
<move file="${java2wsdl.output.dir}/com/hmco/morse/authentication/service/undeploy.wsdd" todir="${project.deploy.dir}" failonerror="false"/>
</target>
JavaScript: ArrayList
Example of use
var list = new ArrayList();
list.add("c");
list.add("f");
list.add("a");
list.add("d");
list.add("e");
list.add("b");
list.remove("d");
alert('get(): ' + list.get());
alert('getSortedAsc(): ' + list.getSortedAsc());
alert('getSortedDesc(): ' + list.getSortedDesc());
function ArrayList() {
var _array = [];
this.add = add;
this.get = get;
this.remove = remove;
this.size = size;
this.toString = toString;
this.getElementIndex = getElementIndex;
this.getSortedAsc = getSortedAsc;
this.getSortedDesc = getSortedDesc;
this.isElementExists = isElementExists;
this.hasAnyNotNullElement = hasAnyNotNullElement;
function add(value){
_array.push(value);
}
function remove(value){
var toDelete = getElementIndex(value);
delete _array[toDelete];
}
function size(){
return _array.length;
}
function toString(){
var t = '';
for(var i = 0; i < size(); i++){
t += _array[i];
if(i < size() - 1) t += ', ';
}
return t;
}
function getElementIndex(value){
for(var i = 0; i < size(); i++)
if(_array[i] == value) return i;
return 'false';
}
function isElementExists(value){
return (getElementIndex(value) == 'false') ? false : true;
}
function hasAnyNotNullElement(){
for(var i = 0; i < size(); i++){
if(_array[i] != '' && typeof(_array[i]) != 'undefined')
return true;
}
return false;
}
function get(){
var tmp = [];
var j = 0;
for(var i = 0; i < size(); i++){
if(typeof(_array[i]) != 'undefined'){
tmp[j] = _array[i];
j++;
}
}
return tmp;
}
function getSortedAsc(){
var tmp = [];
tmp = get();
return tmp.sort();
}
function getSortedDesc(){
var tmp = [];
tmp = get();
tmp.sort();
return tmp.reverse();
}
}
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