Package ognl

Interface ElementsAccessor

  • All Known Implementing Classes:
    ArrayElementsAccessor, CollectionElementsAccessor, EnumerationElementsAccessor, IteratorElementsAccessor, MapElementsAccessor, NumberElementsAccessor, ObjectElementsAccessor

    public interface ElementsAccessor
    This interface defines a method for getting the "elements" of an object, which means any objects that naturally would be considered to be contained by the object. So for a collection, you would expect this method to return all the objects in that collection; while for an ordinary object you would expect this method to return just that object.

    An implementation of this interface will often require that its target objects all be of some particular type. For example, the MapElementsAccessor class requires that its targets all implement the Map interface.

    Author:
    Luke Blanshard (blanshlu@netscape.net), Drew Davidson (drew@ognl.org)
    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.util.Enumeration getElements​(java.lang.Object target)
      Returns an iterator over the elements of the given target object.
    • Method Detail

      • getElements

        java.util.Enumeration getElements​(java.lang.Object target)
                                   throws OgnlException
        Returns an iterator over the elements of the given target object.
        Parameters:
        target - the object to get the elements of
        Returns:
        an iterator over the elements of the given object
        Throws:
        OgnlException - if there is an error getting the given object's elements