I am working in Eclipse Modeling Framework (Eclipse plugin development) in my project the tool(project i am working) provides three perspectives.

1.Accelerator Analyst perspective 2.Contract Validation and 3.Underwriter rules Editor... By default it starts with Contract validation perspective (As we define it within the plugin_customization.ini). However after switching to other perspective does not change the perspective shown...

As all perspective (Class, Id and Name) is define only inside Plugin.XML as it is the task of org.eclipse.ui.perspective that that perspective name should be come forefront. Out of 10 7 times it is working fine but I am not getting why this is not working in that 3 cases. I am pasting my plugin.XML file

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>

<plugin>

   <extension
         id="RuleEditor.application"
         name="Accelerator Tooling"
         point="org.eclipse.core.runtime.applications">
      <application>
         <run
               class="com.csc.fs.underwriting.product.UnderWritingApplication">
         </run>
      </application>
   </extension>
   <extension
         point="org.eclipse.ui.perspectives">
      <perspective
            class="com.csc.fs.underwriting.product.ContractValidationPerspective"
            icon="icons/javadevhov_obj.gif"
            id="com.csc.fs.underwriting.product.ContractValidationPerspective"
            name="Contract Validation">
      </perspective>
   </extension>
      <extension
         point="org.eclipse.ui.perspectives">
      <perspective
            class="com.csc.fs.underwriting.product.UnderwritingPerspective"
            icon="icons/javadevhov_obj.gif"
            id="com.csc.fs.underwriting.product.UnderwritingPerspective"
            name="Underwriting">
      </perspective>

   </extension> 
   <extension
         id="product"
         point="org.eclipse.core.runtime.products">
      <product
            application="com.csc.fs.nba.underwriting.application.RuleEditor.application"
            name="Rule Configurator Workbench"
            description="%AppName">
         <property
               name="introTitle"
               value="Welcome to Accelerator Tooling"/>
         <property
               name="introVer"
               value="%version"/>
         <property
               name="introBrandingImage"
               value="product:csclogo.png"/>
          <property
               name="introBrandingImageText"
               value="CSC FSG"/>
          <property
                name="preferenceCustomization"
                value="plugin_customization.ini"/>
          <property
                name="appName"
                value="Rule Configurator Workbench">
          </property>
      </product>
   </extension>


   <extension
         point="org.eclipse.ui.intro">       
      <intro
            class="org.eclipse.ui.intro.config.CustomizableIntroPart"
            icon="icons/Welcome.gif"
            id="com.csc.fs.nba.underwriting.intro"/>
      <introProductBinding  introId="com.csc.fs.nba.underwriting.intro"
            productId="com.csc.fs.nba.underwriting.application.product"/>
      <intro
            class="org.eclipse.ui.intro.config.CustomizableIntroPart"
            id="com.csc.fs.nba.underwriting.application.intro">
      </intro>
      <introProductBinding
            introId="com.csc.fs.nba.underwriting.application.intro"
            productId="com.csc.fs.nba.underwriting.application.product">
      </introProductBinding>
   </extension>
   <extension
       name="Accelerator Tooling"
       point="org.eclipse.ui.intro.config">
      <config
            content="$nl$/intro/introContent.xml"
            id="org.eclipse.platform.introConfig.mytest"
            introId="com.csc.fs.nba.underwriting.intro">
         <presentation home-page-id="news">
            <implementation 
                  kind="html"
                  os="win32,linux,macosx"
                  style="$nl$/intro/css/shared.css"/>
         </presentation>
      </config>
      <config
            content="introContent.xml"
            id="com.csc.fs.nba.underwriting.application.introConfigId"
            introId="com.csc.fs.nba.underwriting.application.intro">
         <presentation
               home-page-id="root">
            <implementation
                  kind="html"
                  os="win32,linux,macosx"
                  style="content/shared.css">
            </implementation>
         </presentation>
      </config>
   </extension>
   <extension
         point="org.eclipse.ui.intro.configExtension">
        <theme
            default="true"
            id="org.eclipse.ui.intro.universal.circles"
            name="%theme.name.circles"
            path="$nl$/themes/circles"
            previewImage="themes/circles/preview.png">
            <property name="introTitle"
                      value="Accelerator Tooling"/>    
            <property
                      name="introVer"
                      value="%version"/>        
        </theme>
   </extension>

   <extension
         point="org.eclipse.ui.ide.resourceFilters">
      <filter
            pattern="*.dependency"
            selected="true"/>
      <filter
            pattern="*.producteditor"
            selected="true"/>
      <filter
            pattern="*.av"
            selected="true"/>
       <filter
            pattern=".*"
            selected="true"/>
   </extension>
   <extension
         point="org.eclipse.ui.splashHandlers">
      <splashHandler
            class="com.csc.fs.nba.underwriting.application.splashHandlers.InteractiveSplashHandler"
            id="com.csc.fs.nba.underwriting.application.splashHandlers.interactive">
      </splashHandler>
      <splashHandler
            class="com.csc.fs.underwriting.application.splashHandlers.InteractiveSplashHandler"
            id="com.csc.fs.underwriting.application.splashHandlers.interactive">
      </splashHandler>
      <splashHandlerProductBinding
            productId="com.csc.fs.nba.underwriting.application"
            splashId="com.csc.fs.underwriting.application.splashHandlers.interactive">
      </splashHandlerProductBinding>
   </extension>
   <extension
         id="com.csc.fs.pa.security"
         point="com.csc.fs.pa.security.implementation.secure">
      <securityImplementation
            class="com.csc.fs.pa.security.PASecurityImpl">
      </securityImplementation>
   </extension>
   <extension
         id="productApplication.security.pep"
         name="com.csc.fs.pa.producteditor.application.security.pep"
         point="com.csc.fs.pa.security.implementation.authorize">
      <authorizationManager
            class="com.csc.fs.pa.security.authorization.PAAuthorizationManager">
      </authorizationManager>
   </extension>
   <extension
         point="org.eclipse.ui.editors">
      <editor
            class="com.csc.fs.underwriting.product.editors.PDFViewer"
            extensions="pdf"
            icon="icons/pdficon_small.gif"
            id="com.csc.fs.pa.producteditor.application.editors.PDFViewer"
            name="PDF Viewer">
      </editor>
   </extension>
      <extension
         point="org.eclipse.ui.views">
      <category
            id="com.csc.fs.pa.application.viewCategory"
            name="%category">
      </category>
   </extension>
   <extension
         point="org.eclipse.ui.newWizards">
      <category
            id="com.csc.fs.pa.application.newWizardCategory"
            name="%category">
      </category>
      <category
            id="com.csc.fs.pa.application.newWizardInitialize"
            name="%initialize"
            parentCategory="com.csc.fs.pa.application.newWizardCategory">
      </category>
   </extension>
   <extension
         point="com.csc.fs.pa.common.usability.addNewCategory">
      <addNewCategoryId
            id="com.csc.fs.pa.application.newWizardCategory">
      </addNewCategoryId>
   </extension>

   <!--extension
         point="org.eclipse.ui.activities">
      <activity
            description="View Code Generation Option"
            id="com.csc.fs.pa.producteditor.application.viewCodeGen"
            name="ViewCodeGen">
      </activity>
      <activityPatternBinding
            activityId="com.csc.fs.pa.producteditor.application.viewCodeGen"
            pattern="com.csc.fs.pa.bpd.vpms.codegen/com.csc.fs.pa.bpd.vpms.codegen.bpdCodeGenActionId">
      </activityPatternBinding> Add New Product Definition Extension
   </extension--> 

</plugin>


        class="com.csc.fs.underwriting.product.editors.PDFViewer"             extensions="pdf"             icon="icons/pdficon_small.gif"             id="com.csc.fs.pa.producteditor.application.editors.PDFViewer"             name="PDF Viewer">       </editor>    </extension>       <extension          point="org.eclipse.ui.views">       <category             id="com.csc.fs.pa.application.viewCategory"             name="%category">       </category>    </extension>    <extension          point="org.eclipse.ui.newWizards">       <category             id="com.csc.fs.pa.application.newWizardCategory"             name="%category">       </category>       <category             id="com.csc.fs.pa.application.newWizardInitialize"             name="%initialize"             parentCategory="com.csc.fs.pa.application.newWizardCategory">       </category>    </extension>    <extension          point="com.csc.fs.pa.common.usability.addNewCategory">       <addNewCategoryId             id="com.csc.fs.pa.application.newWizardCategory">       </addNewCategoryId>    </extension>     <!--extension          point="org.eclipse.ui.activities">       <activity             description="View Code Generation Option"             id="com.csc.fs.pa.producteditor.application.viewCodeGen"             name="ViewCodeGen">       </activity>       <activityPatternBinding             activityId="com.csc.fs.pa.producteditor.application.viewCodeGen"             pattern="com.csc.fs.pa.bpd.vpms.codegen/com.csc.fs.pa.bpd.vpms.codegen.bpdCodeGenActionId">       </activityPatternBinding> Add New Product Definition Extension    </extension-->   </plugin> Inside each class(the qualified classes in above xml) i did only hide and show the view according to perspective and that is working very fine..

Please provide any method that Eclipse provide so that I can override it in each classed so that it can work accordingly.