Catalog

All Known Implementing Classes:

CatalogBase
```
public interface Catalog
```
A Catalog is a collection of named Commands (or Chains) that can be used to retrieve the set of commands that should be performed based on a symbolic identifier. Use of catalogs is optional, but convenient when there are multiple possible chains that can be selected and executed based on environmental conditions.

Version:

$Revision: 480477 $ $Date: 2006-11-29 08:34:52 +0000 (Wed, 29 Nov 2006) $

Author:

Craig R. McClanahan

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String CATALOG_KEY
A default context attribute for storing a default Catalog, provided as a convenience only.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addCommand(java.lang.String name, Command command)`	Add a new name and associated `Command` or `Chain` to the set of named commands known to this `Catalog`, replacing any previous command for that name.
`Command`	`getCommand(java.lang.String name)`	Return the `Command` or `Chain` associated with the specified name, if any; otherwise, return `null`.
`java.util.Iterator`	`getNames()`	Return an `Iterator` over the set of named commands known to this `Catalog`.

- Field Detail
  - CATALOG_KEY
```
static final java.lang.String CATALOG_KEY
```
    A default context attribute for storing a default Catalog, provided as a convenience only.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - addCommand
```
void addCommand(java.lang.String name,
                Command command)
```
    Add a new name and associated Command or Chain to the set of named commands known to this Catalog, replacing any previous command for that name.
    
    Parameters:
    
    name - Name of the new command
    
    command - Command or Chain to be returned for later lookups on this name
  - getCommand
```
Command getCommand(java.lang.String name)
```
    Return the Command or Chain associated with the specified name, if any; otherwise, return null.
    
    Parameters:
    
    name - Name for which a Command or Chain should be retrieved
    
    Returns:
    
    The Command associated with the specified name.
  - getNames
```
java.util.Iterator getNames()
```
    Return an Iterator over the set of named commands known to this Catalog. If there are no known commands, an empty Iterator is returned.
    
    Returns:
    
    An iterator of the names in this Catalog.