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List:       kde-devel
Subject:    Re: Having trouble with DBus mappings
From:       Thiago Macieira <thiago () kde ! org>
Date:       2008-07-07 12:20:46
Message-ID: 200807070920.54498.thiago () kde ! org
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Kelly Miller wrote:
>On July 6, 2008 10:48:48 pm Thiago Macieira wrote:
>> You wrote your code to QList<QMap<QString, QDBusVariant> >, which
>> would map to aa{sv} (note the extra a, indicating a list of maps).
>
>That worked, although it kind of confuses me.  Wouldn't that map to
> {sv}, not a{sv}?  Or does a simply mean "a collection" and the brackets
> state what type?

"a" means ARRAY, in the sense of collection. Therefore, "ay" is an array 
of bytes, which we map to QByteArray; "ab" is an array of bools, which we 
could map to a QBitArray or a QList<bool>.

"{xx}" doesn't mean map. It means "DICT_ENTRY", i.e., the entry of the 
map. So, "a{xx}" means a collection of dictionary entries -- therefore, a 
dictionary.

So, the proper way of reading "a{sv}" is "ARRAY of DICT_ENTRY of (STRING, 
VARIANT)".
-- 
  Thiago Macieira  -  thiago (AT) macieira.info - thiago (AT) kde.org
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