Population of trigger of the field dependent on the loading of the page

Hello

I use JDeveloper 12 c. I have a text with a LOV entry field and the output text field which depends on the input box. I created these in the view entity such that when I change the value of the entry in the field (directly or indirectly), he correctly fills the field of dependent result. Note that the input field is linked to the data, but the result field is not (it is a transient field). So that everything works correctly.

When I load the page fragment, the data are filled in the field as expected. But I would also field dependent for automatically filled with the appropriate value based on the value in the input field. I've tried to set 'auto-submit' on the entry field and a PPR trigger on the output field, but it was not effective. Is there a setting that can allow to do it automatically? Or do I need to use code in a backing bean? And if so, examples of code would be great.

Thank you.

As first, write continuation method in the Java ViewRowImpl class:

/**
 @param lbdName - List Of Values Name you attached to the attribute
 @param attrName -LOV attribute name whose value you want to return from method
 @param arr - LOV's key attributes values
*/
protected Object getLovAttribute(String lbdName, String attrName, Object[] arr){
    Object result = null;
    ListBindingDef lbd = getViewDef().findListBindingDef(lbdName);
    if (lbd != null) {
        Key keyForLovVO = new Key(arr);
        Row lovRow = getListBindingRSI(lbd).getRow(keyForLovVO);
        if (lovRow != null)
            result = lovRow.getAttribute(attrName);
    }
    return result;
}

Then, change getter transitional attribute, in the following way:

public String getTransAttr() {
    if (getAttributeInternal(TRANS_ATTR) == null) {
        // check to see if databound attribute (where is LOV attached) have value, and if so, get appropriate value from LOV row
        if (getDataBoundAttribute() != null)
            return (String)getLovAttribute("_List_Of_Values_Name", "LOV_attribute_you_want", new Object[]{getDataBoundAttribute()});
    }
    return (String) getAttributeInternal(TRANS_ATTR);
}

Of course, change over the method to return the appropriate type and ajdust databound attribute accessor Get etc...

Tags: Java

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