ContextList

org.omg.CORBA

Class ContextList

java.lang.Object
- org.omg.CORBA.ContextList

```
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:

Context

Constructor Summary

Constructors

Constructor and Description
`ContextList()`

Method Summary

All Methods

Instance Methods

Abstract Methods
Modifier and Type	Method and 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 Detail
  - ContextList
```
public ContextList()
```
- Method Detail
  - 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