Accessing Bean Properties

Question

If a bean has a property accessor like:
public int getID();
, it can be accessed using the action:
<jsp:getProperty name="Bean" property="id"/>.
What happens if the bean accessor takes a parameter? e.g:
public int getID(int toGet);
How do you use the action property accessor to specify the parameter?

Answer 1

From : http://java.sun.com/products/jsp/tags/11/syntaxref1111.html#8820
"You cannot use <jsp:getProperty> to retrieve the values of an indexed property"
An ndexed property is one that requires a parameter in the get method.
So your only real option is to create a setter method for the parameter, then create a no-arg get method:
  private int _toGet = -1;
  public void setIDToGet(int toGet) { _toGet = toGet; }
  public int getID()
    if (_toGet == -1) throw new IllegalStateException ("The ID to get must be set before you can get the ID");
    int id = //get the id based on _toGet;
    _toGet = -1; //reset _toGet so we need to set it again later ...
    return id;
  }