Package org.omg.CORBA

Class ContextList

java.lang.Object
org.omg.CORBA.ContextList
Direct Known Subclasses:
ContextListImpl
public abstract class ContextList extends Object
An object containing a modifiable list of String objects that represent property names. This class is used in Request operations to describe the contexts that need to be resolved and sent with the invocation. (A context is resolved by giving a property name and getting back the value associated with it.) This is done by calling the Context method get_values and supplying a string from a ContextList object as the third parameter. The method get_values returns an NVList object containing the NamedValue objects that hold the value(s) identified by the given string.

A ContextList object is created by the ORB, as illustrated here: 

   ORB orb = ORB.init(args, null);
   org.omg.CORBA.ContextList ctxList = orb.create_context_list();
The variable ctxList represents an empty ContextList object. Strings are added to the list with the method add, accessed with the method item, and removed with the method remove.
Since:
JDK1.2
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    ContextList()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    abstract void
    add(String ctx)
    Adds a String object to this ContextList object.
    abstract int
    count()
    Returns the number of String objects in this ContextList object.
    abstract String
    item(int index)
    Returns the String object at the given index.
    abstract void
    remove(int index)
    Removes the String object at the given index.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • ContextList

      public ContextList()

  • Method Details

    • count

      public abstract int count()
      Returns the number of String objects in this ContextList object.
      Returns:
      an int representing the number of Strings in this ContextList object

    • add

      public abstract void add(String ctx)
      Adds a String object to this ContextList object.
      Parameters:
      ctx - the String object to be added

    • item

      public abstract String item(int index) throws Bounds
      Returns the String object at the given index.
      Parameters:
      index - the index of the string desired, with 0 being the index of the first string
      Returns:
      the string at the given index
      Throws:
      Bounds - if the index is greater than or equal to the number of strings in this ContextList object

    • remove

      public abstract void remove(int index) throws Bounds
      Removes the String object at the given index. Note that the indices of all strings following the one removed are shifted down by one.
      Parameters:
      index - the index of the String object to be removed, with 0 designating the first string
      Throws:
      Bounds - if the index is greater than or equal to the number of String objects in this ContextList object