getItemProperty and null

Vaadin 6 / 7 / 8 Framework Data Binding
1 

        IndexedContainer ct = new IndexedContainer();
        ct.addContainerProperty("p1", String.class, "");
        Item item = ct.addItem("item1");
        Property property = item.getItemProperty("p2");
        if (property != null) System.out.println("ok");

Why is this code returns “ok” ? Property with the id “p2” does not exist.

2

Hi Andrey,

After reading javadoc, I think your code should never print ok.

But when I looked at the source for the getItemProperty() in the implementation of Item in the class IndexedContainerItem, I found that the method always return a new object

  /*
         * (non-Javadoc)
         * 
         * @see com.vaadin.data.Item#getItemProperty(java.lang.Object)
         */
        public Property<?> getItemProperty(Object id) {
            return new IndexedContainerProperty(itemId, id);
        }

So what’s is wrong : this method above or javadoc ?..
Hope Vaadin guys see that post and give us an explanation.

Regards.

3

Indeed, IndexedContainerItem.getItemProperty(…) behavior is not consistent with the inherited javadoc.

There is already a ticket for this (
#7103
).