4.4. UAProf Components
and Attributes
The
UAProf specification has defined a number of base components and
attribute names so that different mobile device manufacturers will
not use different components and attribute names to describe the same
property. For example, the screen size of a cell phone is always
found in the ScreenSize attribute of the HardwarePlatform
component no matter its manufacturer is Nokia, Motorola or
Sony Ericsson. A reference of the base components and attribute names
is available at "UAProf
Reference".
The
following table provides a brief description of the components that
you may find in a user agent profile:
|
UAProf
component
|
Brief
description
|
|
HardwarePlatform
|
The
HardwarePlatform component provides information about the
hardware capabilities of the mobile device.
Examples:
color capability, model name of mobile device, text input
capability, screen size and sound capability.
|
|
SoftwarePlatform
|
The
SoftwarePlatform
component provides information about the software
characteristics of the mobile device.
Examples:
audio and video encoders supported, character sets accepted, Java
capability, acceptable content types / MIME types and operating
system name and version.
|
|
NetworkCharacteristics
|
The
NetworkCharacteristics
component provides information about the capabilities of
the mobile device for network connection.
Examples:
bearers supported (CSD, GPRS, SMS, EDGE...) and encryption
methods supported (WTLS, SSL, TLS...).
|
|
BrowserUA
|
The
BrowserUA component
provides information about the browser of the mobile device.
Examples:
mobile browser name and version, HTML version supported, XHTML
version supported and JavaScript capability.
|
|
WapCharacteristics
|
The
WapCharacteristics
component provides information about the WAP features
supported by the mobile device.
Examples:
DRM (digital rights management) capability, maximum WML deck
size, WAP version supported and WMLScript libraries supported.
|
|
PushCharacteristics
|
The
PushCharacteristics
component provides information about the WAP Push
capabilities of the mobile device.
Examples:
character encodings supported, character sets supported, content
types / MIME types supported and maximum WAP Push message size.
|
|
MmsCharacteristics
|
The
MmsCharacteristics
component provides information about the MMS (Multimedia
Messaging Service) capabilities of the mobile device.
Examples:
maximum MMS message size supported, maximum image resolution
supported and character sets supported.
|
4.4.1. Collection Types
and Attribute Types in UAProf
In
UAProf, every attribute is associated with a collection type and an
attribute type. There are three collection types (Simple, Bag,
Seq) and four attribute types (Boolean, Dimension,
Literal, Number). The following two tables provide a
brief description about the collection types and attribute types in
UAProf:
|
Collection
type
|
Description
|
|
Simple
|
An
attribute of the Simple
collection type has a single value. An example is the
ScreenSize attribute:
<prf:ScreenSize>208x208</prf:ScreenSize>
|
|
Bag
|
An
attribute of the Bag
collection type has a list of unordered values. An example is the
CcppAccept-Charset
attribute, which tells us the
character sets supported by a wireless device:
<prf:CcppAccept-Charset>
<rdf:Bag>
<rdf:li>UTF-8</rdf:li>
<rdf:li>ISO-10646-UCS-2</rdf:li>
<rdf:li>ISO-8859-1</rdf:li>
<rdf:li>US-ASCII</rdf:li>
</rdf:Bag>
</prf:CcppAccept-Charset>
|
|
Seq
|
An
attribute of the Seq
collection type has a list of ordered values. An example is the
CcppAccept-Language
attribute, which tells us the
language preference of the user. The items are listed in
order of preference. For example, the first list item is the most
preferred language.
<prf:CcppAccept-Language>
<rdf:Seq>
<rdf:li>en</rdf:li>
<rdf:li>de</rdf:li>
<rdf:li>fr</rdf:li>
<rdf:li>zh-TW</rdf:li>
<rdf:li>zh-CN</rdf:li>
</rdf:Seq>
</prf:CcppAccept-Language>
|
|
Attribute
type
|
Description
|
|
Boolean
|
Yes
or No.
An
example is the ColorCapable
attribute:
<prf:ColorCapable>Yes</prf:ColorCapable>
|
|
Dimension
|
Two
integers equal to or greater than 0 with an "x"
character in between.
An
example is the ScreenSize
attribute:
<prf:ScreenSize>208x208</prf:ScreenSize>
|
|
Literal
|
A
string.
An
example is the Vendor
attribute:
<prf:Vendor>Nokia</prf:Vendor>
|
|
Number
|
An
integer equals to or greater than 0. An example is the
Push-MsgSize attribute,
which contains the maximum WAP Push message size:
<prf:Push-MsgSize>1400</prf:Push-MsgSize>
|
|
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