voice, action, and decision element configurations are constructed in the Java
API by implementing the Java interfaces
DecisionConfigInterface respectively, all found in
the com.audium.server.proxy package.
name of the voice element interface is not consistent with the others due to
backwards compatibility concerns. Each of these interfaces contains a single
method named getConfig that receives three
The name of the
element as a String.
instance of ElementAPI or
ActionAPI (for dynamic action element
configurations). These classes belong to the Session API and are used to access
session information. (See Session API for more
information on this API.)
An instance of
DecisionElementConfig (found in the
com.audium.server.xml package) that contains the
base configuration for the element (or null if there
is no base configuration).
The method must return an
instance of the configuration object
DecisionElementConfig). This can be a modified
version of the object passed as input to the method or one built from scratch.
It is expected that should an unrecoverable error occur, the dynamic
configuration class should throw an
Due to the fact that
most dynamic configurations involve only a few changes to the static
configuration, obtaining a base configuration as input to the execution method
saves significant coding effort since the dynamic configuration class simply
needs to modify this object in order to create the final configuration object
then return it.
All three configuration classes extend a common
base class, ElementConfig. This class defines those
features common to all three element configurations: settings, element and
session data created, custom log content, and associating the call with a UID.
DecisionElementConfig are essentially identical,
separate classes are used for design considerations and for possible future
differentiation. VoiceElementConfig, however,
expands upon the ElementConfig class by introducing
voice element only features: local hotlinks, VoiceXML properties and audio
groups. The three configuration classes allow the developer to obtain
everything about a configuration as well as change or add to the configuration
in any way.
To handle audio groups,
VoiceElementConfig introduces inner classes that
define an audio group (AudioGroup) and a generic
audio item (AudioItem). Two additional inner classes
define audio item types that extend the AudioItem
class to define a Say It Smart audio item
(SayItSmart) and a static audio item
AudioGroup class encapsulates any number of
AudioItem objects of either type. A developer can
create new audio groups separately and call a method in
VoiceElementConfig to add the audio group to the
configuration, or an existing AudioGroup object can
be obtained, modified, and then reinserted into the configuration.
To handle local hotlinks, which are supported on voice elements only and
add page-scoped VoiceXML links to the pages generated by the voice element,
VoiceElementConfig introduces an inner class called
The Javadocs provide much
more detail regarding these classes and their methods.