Java and Eclipse Plugin Development

Wednesday, October 21, 2015

How to merge the changes from your development branch to master/release branch

$ git checkout development

$ git merge -s ours release //merge release into development and discard any changes on release branch

$ git checkout release

$git merge development

Note: Very important point here is, we are completely discarding the changes which are made in release branch. Here we will just bring all the changes from development branch to release branch without having conflicts. If any conflicts during the merge it will take development changes and ignore the release changes if any.

This merge strategy can be used ONLY when you are sure that release branch does not have any additional git commits compared to development branch.

If release branch is having specific commits and which are not there in development branch, then it's better to go always with the default merge strategy.

$ git checkout release
$ git merge development

Resolve any conflicts if any and commit it.

Monday, October 19, 2015

Github markup editor

Editor:
http://github-markup.dfilimonov.com/

Some notes:
https://gist.github.com/dupuy/1855764
https://help.github.com/articles/github-flavored-markdown/
https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet

Monday, October 12, 2015

How to find the product code for the installed MSI file in windows

Run below command from power shell to see.

PS C:\Users\Admin> get-wmiobject -class Win32_Product

IdentifyingNumber : {32A3A4F4-B792-11D6-A78A-00B0D0170400}
Name : Java SE Development Kit 7 Update 40
Vendor : Oracle
Version : 1.7.0.400
Caption : Java SE Development Kit 7 Update 40

IdentifyingNumber : {32A3A4F4-B792-11D6-A78A-00B0D0170760}
Name : Java SE Development Kit 7 Update 76
Vendor : Oracle
Version : 1.7.0.760
Caption : Java SE Development Kit 7 Update 76

IdentifyingNumber : {32A3A4F4-B792-11D6-A78A-00B0D0170800}
Name : Java SE Development Kit 7 Update 80
Vendor : Oracle
Version : 1.7.0.800
Caption : Java SE Development Kit 7 Update 80

IdentifyingNumber : {64A3A4F4-B792-11D6-A78A-00B0D0170400}
Name : Java SE Development Kit 7 Update 40 (64-bit)
Vendor : Oracle
Version : 1.7.0.400
Caption : Java SE Development Kit 7 Update 40 (64-bit)

IdentifyingNumber : {64A3A4F4-B792-11D6-A78A-00B0D0170800}
Name : Java SE Development Kit 7 Update 80 (64-bit)
Vendor : Oracle
Version : 1.7.0.800
Caption : Java SE Development Kit 7 Update 80 (64-bit)

IdentifyingNumber number represents the product code.

Sunday, September 13, 2015

How can I pass arguments to an extension point constructor/ createExecutableExtension with parameters in eclipse

Please also refer to my previous post.
http://exploreeclipse.blogspot.in/2015/09/reading-extension-point-from-eclipse.html

public void readExtensionPoint(String myjsonString) {

IExtensionRegistry registry = Platform.getExtensionRegistry();

IConfigurationElement[] elements = registry.getConfigurationElementsFor("com.kk.myplugin", "services");

for (IConfigurationElement iConfigurationElement : elements)

{

iConfigurationElement.getAttribute("service_id");

iConfigurationElement.getAttribute("name");

try

{

try

{

String attribute = iConfigurationElement.getAttribute("class");

String contributorName = iConfigurationElement.getDeclaringExtension().getContributor().getName();

Class<?> javaClass = Platform.getBundle(contributorName).loadClass(attribute);

Constructor<?> ctor = javaClass.getDeclaredConstructor(String.class);

IService service = (IService) ctor.newInstance(myjsonString);

return service;

}

catch (Exception e)

{

}

catch (CoreException e)

{

e.printStackTrace();

}

Reading an extension point from eclipse plugin

public void readExtensionPoint() {

  IExtensionRegistry registry = Platform.getExtensionRegistry();

  IConfigurationElement[] elements = registry.getConfigurationElementsFor("com.kk.core", "platformServices");

  for (IConfigurationElement iConfigurationElement : elements)

{

   iConfigurationElement.getAttribute("id");

try

{

    //This is your class

    Object createExecutableExtension = iConfigurationElement.createExecutableExtension("class");

}

   catch (CoreException e)

{

    e.printStackTrace();

}

}

}

Here is my extension point schema definition:

<?xml version='1.0' encoding='UTF-8'?>

<!-- Schema file written by PDE -->

<schema targetNamespace="com.kk.core" xmlns="http://www.w3.org/2001/XMLSchema">

<annotation>

      <appinfo>

         <meta.schema plugin="com.kk.core" id="platformServices" name="platformServices"/>

      </appinfo>

      <documentation>

         [Enter description of this extension point.]

      </documentation>

   </annotation>

   <element name="extension">

      <annotation>

         <appinfo>

            <meta.element />

         </appinfo>

      </annotation>

      <complexType>

         <sequence minOccurs="1" maxOccurs="unbounded">

            <element ref="service"/>

         </sequence>

         <attribute name="point" type="string" use="required">

            <annotation>

               <documentation>

               </documentation>

            </annotation>

         </attribute>

         <attribute name="id" type="string">

            <annotation>

               <documentation>

               </documentation>

            </annotation>

         </attribute>

         <attribute name="name" type="string">

            <annotation>

               <documentation>

               </documentation>

               <appinfo>

                  <meta.attribute translatable="true"/>

               </appinfo>

            </annotation>

         </attribute>

      </complexType>

   </element>

   <element name="service">

      <complexType>

         <attribute name="id" type="string" use="required">

            <annotation>

               <documentation>

               </documentation>

            </annotation>

         </attribute>

         <attribute name="class" type="string" use="required">

            <annotation>

               <documentation>

               </documentation>

               <appinfo>

                  <meta.attribute kind="java" basedOn="com.kk.core.services.Service:com.kk.core.services.IService"/>

               </appinfo>

            </annotation>

         </attribute>

      </complexType>

   </element>

   <annotation>

      <appinfo>

         <meta.section type="since"/>

      </appinfo>

      <documentation>

         [Enter the first release in which this extension point appears.]

      </documentation>

   </annotation>

   <annotation>

      <appinfo>

         <meta.section type="examples"/>

      </appinfo>

      <documentation>

         [Enter extension point usage example here.]

      </documentation>

   </annotation>

   <annotation>

      <appinfo>

         <meta.section type="apiinfo"/>

      </appinfo>

      <documentation>

         [Enter API information here.]

      </documentation>

   </annotation>

   <annotation>

      <appinfo>

         <meta.section type="implementation"/>

      </appinfo>

      <documentation>

         [Enter information about supplied implementation of this extension point.]

      </documentation>

   </annotation>

</schema>

Extension:

   <extension

         id="com.kk.core.platform.services"

         name="KK Platform Services"

         point="com.core.platformServices">

      <service

            class="com.kk.core.services.CheckService"

            id="xx34567vvk">

      </service>

   </extension>

Sunday, September 6, 2015

Storing in eclipse secure storage with encryption

ISecurePreferences root = SecurePreferencesFactory.getDefault();

ISecurePreferences node = root.node("/com/kk/store"); //path

//store

try

{

node.put("myusername", "mysecretpassword", true);

}

catch (StorageException e)

{