Ashish Awasthi's Blog

Monday 24 March 2014

Iterating ViewObject vertically (get all attributes of ViewObject) programmatically

Hello All,
This post talks about a requirement of getting all attributes (column names) of a viewObject programmatically

Create a fusion web application and business component using department table

you can see all attributes in Departments entity object

Now to get ViewObject's attributes name , there is a method written in AMImpl class , see it, i have added a facesMessage to show all names on a Message Board

    /**Method to get all attributes of a viewObject
     * */
    public void iterateVoVertically() {
        ViewObjectImpl vo = this.getDepartments1();
        ViewAttributeDefImpl[] attrDefs = vo.getViewAttributeDefImpls();
        int count = 0;
        StringBuilder infoMsg =
            new StringBuilder("<html><body><b><p style='color:red'> Attribute of Department ViewObject are-</p></b>");
        infoMsg.append("<ul>");


        for (ViewAttributeDefImpl attrDef : attrDefs) {
            byte attrKind =
                attrDefs[count].getAttributeKind(); //checks attribute kind for each element in an array of AttributeDefs
            if (attrKind != AttributeDef.ATTR_ASSOCIATED_ROW && attrKind != AttributeDef.ATTR_ASSOCIATED_ROWITERATOR) {
                String columnName = attrDef.getName();
                infoMsg.append("<li> <b>" + attrDef.getName() + "</b></li>");
                System.out.println("Column Name-" + columnName);
            }
        }
        infoMsg.append("</ul><br>");
        infoMsg.append("</body></html>");
        FacesMessage msg = new FacesMessage(infoMsg.toString());
        msg.setSeverity(FacesMessage.SEVERITY_INFO);
        FacesContext.getCurrentInstance().addMessage(null, msg);
    }

I have called this method through page binding and AM Client on a button of page

now on click of button all attributes of Departments ViewObject are shown in FacesMessage, you can use it in your code

Cheers :-)

Saturday 8 March 2014

Launching browser print dialog using simple javascript function in ADF

Hello All ,
This posts talks about a requirement of printing a simple page (not much component as, form,tree,etc & not much data)
you can use a simple one liner javascript function to invoke browser's print dialog.

there is a page with Departments table on it, and a button to print this page

Called this simple javascript function on button click to open print dialog

window.print();

to execute javascript through managed bean use this method

    /**Method to execute Javascript
     * @param javascriptCode
     */
    public static void runJavaScriptCode(String javascriptCode) {
        FacesContext facesCtx = FacesContext.getCurrentInstance();
        ExtendedRenderKitService service = Service.getRenderKitService(facesCtx, ExtendedRenderKitService.class);
        service.addScript(facesCtx, javascriptCode);
    }

click on print button- In Google Chrome

In Mozilla-

after printing, the page look like this

Sample ADF Application- Download
Cheers :-)

Wednesday 5 March 2014

Igonre null values in viewCriteria -Jdeveloper 12c (Not a bug but a change)

Hello All,
In jdev 12c there is some change in viewCriteria design window, there is a checkbox to ignore null values in criteria , in 11g release it was enabled for all values in criteria item

but in 12c it is disabled for all values of ViewCriteria bind variable

there is two different section for creating bind variable in 12c
1. ViewCriteria Bind Variable
2. Query Bind Variable(Required)
So when you create a bind var of string type in query variables.

and use it in viewCriteria , only then this 'ignore null values' checkbox will be enabled

and when you use viewCriteria bind varibles it is disabled but sometimes you need to change it, so can change it using ViewObject xml source

Select ViewCriteria and go to source

Now change GenerateIsNullClauseForBindVars="false" to true