Update Model Values while Validation (Exception) occurs on page on Value Change event- Oracle ADF (processUpdates)

In ADF when we have some validation on page and we try to submit any value, but normally after validation (Exception) values are not updated in Model until exception is handled.
This tutorial is about how to update values in Model while exception on page.
For a scenario, i have used department (default HR Schema) table and form in a JSP XML fragment inside bounded taskflow.
In form Department Id and Department Name is mandatory field, ManagerId and Location Id has auto submit true.

• I have dropped createInsert,Execute,Commit and Rollback as buttons on page

• Click on create button and first enter manager id, as this field has autosubmit true so on submission of value page is validated and then Required Fields throw exception, and after exception you can see that manager id & location id is not updated in Model, and not reflected in af:table also.

•  Normally what we do, set immediate true to skip validations, but in this case i have witten ValueChangeListener on manager Id and Location Id to process values in Model.- see code



    public void mangrIdVCE(ValueChangeEvent vce) {
        vce.getComponent().processUpdates(FacesContext.getCurrentInstance());
    }



• processUpdates() method of UIComponent class perform the coponent tree processing for all facet of this component by Update Model Values phase of request processing, and pushes data to Model


• Now after calling this method, run application- Now values are populated in af:table and validation is still there on page

• this approach can be used while using validators on page and want to process some values after validation (as conditional validation of some fields etc)
• Download sample application -Sample App

Phone Number custom validation using Regular Expression in ADF and Java

Regular Expression (REGEX) is the best method to validate phone number. emailId, name in Java.
Here I have written this validation code for phone number using Regular Expression and Java code to use this in an Oracle ADF Application.

public void phoneNoValidator(FacesContext facesContext, UIComponent uIComponent, Object object) {
        String msg2 = "";
        if (object != null) {
            String phnNo = object.toString();
            int openB = 0;
            int closeB = 0;
            boolean closeFg = false;
            char[] xx = phnNo.toCharArray();
            for (char c : xx) {
                if (c == '(') {
                    openB = openB + 1;
                } else if (c == ')') {
                    closeB = closeB + 1;
                }

                if (closeB > openB) {
                    closeFg = true; //closed brackets will not be more than open brackets at any given time.
                }
            }
            //if openB=0 then no. of closing and opening brackets equal || opening bracket must always come before closing brackets
            //closing brackets must not come before first occurrence of openning bracket
            if (openB != closeB || closeFg == true || (phnNo.lastIndexOf("(") > phnNo.lastIndexOf(")")) ||
                (phnNo.indexOf(")") < phnNo.indexOf("("))) {
                msg2 = "Brackets not closed properly.";
                FacesMessage message2 = new FacesMessage(msg2);
                message2.setSeverity(FacesMessage.SEVERITY_ERROR);
                throw new ValidatorException(message2);
            }
            if (phnNo.contains("()")) {
                msg2 = "Empty Brackets are not allowed.";
                FacesMessage message2 = new FacesMessage(msg2);
                message2.setSeverity(FacesMessage.SEVERITY_ERROR);
                throw new ValidatorException(message2);
            }
            if (phnNo.contains("(.") || phnNo.contains("(-") || phnNo.contains("-)")) {
                msg2 = "Invalid Phone Number.Check content inside brackets.";
                FacesMessage message2 = new FacesMessage(msg2);
                message2.setSeverity(FacesMessage.SEVERITY_ERROR);
                throw new ValidatorException(message2);
            }

            openB = 0;
            closeB = 0;
            closeFg = false;
            //check for valid language name.Allowed- brackets,dots,hyphen

            String expression = "([0-9\\-\\+\\(\\)]+)";
            CharSequence inputStr = phnNo;
            Pattern pattern = Pattern.compile(expression);
            Matcher matcher = pattern.matcher(inputStr);
            String error = "Invalid Phone Number";
            System.out.println("Index of plus is--->" + phnNo.lastIndexOf("+"));
            System.out.println("Bracket index--->" + phnNo.charAt(0));

            if (matcher.matches()) {
                if (phnNo.contains("++") || phnNo.contains("--")) {
                    throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, error,
                                                                  "Can not contain two hyphen(--) or plus(++)"));
                } else if (phnNo.lastIndexOf("+") > 1) {
                    throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, error,
                                                                  "Plus sign should be in proper place"));
                } else if (phnNo.lastIndexOf("+") == 1 && phnNo.charAt(0) != '(') {
                    throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, error,
                                                                  "Plus sign should be in proper place"));
                } else if (phnNo.startsWith(" ") || phnNo.endsWith(" ")) {
                    throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, error,
                                                                  "Space Not allowed at start and end"));
                }

            } else {
                throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, error,
                                                              "Only numeric character,+,() and - allowed"));
            }

        }
    }

Cheers:) Happy Learning

Insert New Row in ADF ViewObject Programatically

Here I am showing how to insert new row in ADF view object programmatically.

For this create a method in managed bean for your button on that you want to insert row.
and call this AMImpl method that makes use of ViewObjectImpl createRow method to add new row in RowSet

Created a method in AMImpl class and it'll be called in managed bean using binding layer

This method creates a row in ViewObject , and you can set(Insert) this row with some values using this simple snippet of code 

//Get ViewObject Instance
    ViewObjectImpl demoVo = this.getEmployeesDemo1();


// Creates a row in ViewObject
    Row r = demoVo.createRow();  
      
// You can set attribute values in this new row
    r.setAttribute("EmployeeId", 001); 

//Insert that row in ViewObject
    demoVo.insertRow(r);   
             
//Commit the changes, If you need
    this.getDBTransaction().commit();     
    demoVo.executeQuery();

This is how you can create row in ViewObject