ADF Performance Tuning part-1 - Production tuning

1. animation-enabled=false in trinidad-config.xml file
2. in web.xml file do the following changes if not done already

   1. oracle.adf.view.rich.automation.ENABLE=false
   2. oracle.adf.view.rich.ASSERT_ENABLED=false
   3. org.apache.myfaces.trinidad.CHECK_FILE_MODIFICATION=false
   4.  org.apache.myfaces.trinidad.COMPRESS_VIEW_STATES=true
   5. org.apache.myfaces.trinidad.DEBUG_JAVASCRIPT=false
   6. org.apache.myfaces.trinidad.DISABLE_CONTENT_COMPRESSION=false
   7. oracle.adf.view.rich.libraryPartitioning.DISABLED=false 
   8. oracle.adf.view.rich.LOGGER_LEVEL=false
   9. javax.faces.STATE_SAVING_METHOD=client 
   10. oracle.adf.view.rich.versionString.HIDDEN=true



3.  Use the ADFLogger
4. Don't use System.out.* or System.err.* - These have major impact on performance
5. Remove commented out code
6. Do not import view or controller classes
7. Close callableStatement, preparedStatements and RowSetIterators
8. Use application module JDBC data source only not  JDBC URLs.
9. Run with Enable Application Module pooling on for production .
10. Define at least one entity object key attribute per entity object.
11.  Ensure entity object UI Hints and messages are internationalized
12. Avoid read only view objects as far as possible
13. Use view criteria over editing view object where clauses
14. Never use view object select *
15. Limit custom code in bean accessors -ie. in getters and setters
16. Use beans only defined in the task flow for reuse 
17. Avoid applicationScope and sessionScope variables
18. Define applicationScope and sessionScope beans in adfc-config.xml
19. Only create backing beans when actually needed, do not bind unnecessary component references into backing beans.
20. Avoid long component ID lengths.
21. Avoid unnecessary use of clientComponent=true
22. Use rendered=false over visible=false wherever possible.
23. Never rely on UI side validation.
24. Avoid inline page/fragment JavaScript and CSS
25. Manual tests for UIs should include stretch / shrink behavior.
26. Manual tests for UIs should include changing font size[Zoom-in and Zoom-out testing]
27. url.rewriting.enabled should be false in weblogic.xml
28. Make sure jbo.debugoutput  is disabled for production
29. Make HA available. Add this entry in adf-config.xml file

  <adf-controller-config xmlns="http://xmlns.oracle.com/adf/controller/config">

    <adf-scope-ha-support>true</adf-scope-ha-support>

  </adf-controller-config>

Useful methods in Oracle ADF. Part -1

1. Getting the VO

a.)  DCBindingContainer dcBindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
            DCIteratorBinding dcIterBind = (DCIteratorBinding)dcBindings.get("VO1Iterator");  //VO1Iterator define in page def
            ViewObject vo = dcIterBind.getViewObject();
b.) AppModuleImpl amImpl= getApplicationModuleImpl();

     ViewObject vo=  amImpl.getVO();

2. Getting the Application module
a.)
ApplicationModule am=vo.getApplicationModule();
b.)
        FacesContext fc = FacesContext.getCurrentInstance();
        ValueBinding vb = fc.getApplication().createValueBinding("#{data}");
        BindingContext bc = (BindingContext)vb.getValue(fc);
        DCDataControl dc = bc.findDataControl("AppModuleDataControl");
        PublicPortalAppModuleImpl am = (PublicPortalAppModuleImpl)dc.getDataProvider();
3. Row count of a table
        RowSetIterator invoiceRsItr = dcIterBind.getRowSetIterator();
        System.out.println("invoiceRsItr.invoiceRsItr.getRowCount(): " +
                           invoiceRsItr.getRowCount()); 
4. Get URL parameter value
  public static String getURLParamVal(String pv_strParamerName) {
    HttpServletRequest objHttpServletRequest = (HttpServletRequest)getFacesContext().getExternalContext().getRequest();
    return objHttpServletRequest.getParameter(pv_strParamerName);
  }
5. Get operationBinding e.g.- RollBack , Commit etc
      public static OperationBinding getOperBinding(String operationName)
      {
      OperationBinding operBind=null;
      FacesContext fc = FacesContext.getCurrentInstance();
      ValueBinding vb = fc.getApplication().createValueBinding("#{bindings}");
      DCBindingContainer bindingContainer = (DCBindingContainer)vb.getValue(fc);
      oper = (OperationBinding)bindingContainer.getOperationBinding(operation);
      return operBind;
      } 
6. Get the selected rows for ADF table
      a.)  DCBindingContainer dcBindings =(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
        DCIteratorBinding dcIterBind =
            (DCIteratorBinding)dcBindings.get("EmployeesView1Iterator");
        RowSetIterator invoiceRsItr = dcIterBind.getRowSetIterator();
        RowKeySet rwkset1 = tableBind.getSelectedRowKeys();
        Iterator iter=rwkset1.iterator();
        Row row=null;
        while (iter.hasNext()) {
            Key key=(Key)((List)iter.next()).get(0);
            System.out.println("key "+key);
            row =
        invoiceRsItr.getRow(key);
            System.out.println("Email Selected-->" +
                               row.getAttribute("Email"));
        } 
Note: HR schema's employee table is used, tableBind is the binding of the UI adf table
b.)   
        Iterator iter = tableBind.getSelectedRowKeys().iterator();
        while (iter.hasNext()) {
            Object key= iter.next();
            tableBind.setRowKey(key);
            FacesCtrlHierNodeBinding rw = (FacesCtrlHierNodeBinding)tableBind.getRowData();
            System.out.println("Invoice Selected-->" +
                               rw.getAttribute("Email"));
            }
7. Selecting all rows of the table by a booleanCheckBox 

    public static void checkUncheckAll(String dcIteratorName, String rowName,
                                 String checkBoxVal) {
        DCBindingContainer dcBindings =
            (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
        DCIteratorBinding dcIterBind =
            (DCIteratorBinding)dcBindings.get(dcIteratorName);
        RowSetIterator rsetIter = dcIterBind.getRowSetIterator();
        Row rw = null;
        boolean isFirst = true;
        while (rsetIter.hasNext()) {
            if (isFirst) {
                rw = rsetIter.first();
                isFirst = false;
            } else {
                rw = rsetIter.next();
            }
            rw.setAttribute(rowName, checkBoxVal);
        }
       // rsetIter.reset();    //reset to start the Iterator all over
        rsetIter.closeRowSetIterator();  //always remember to closeit-think it as resultset
    } 

Note:  dcIteratorName- name of VO iterator from Page Binding,VO column which has be implemented as checkBox,checkbox value-Boolean or Yes/No depending upon your logic
 8. Get the name of VOs exposed to the particular am
       String vonames[]= vo.getApplicationModule().getViewObjectNames();
        for (int i=0;i<vonames.length;i++){
            System.out.println(vonames[i]);
        }