qdbusxml2cpp未知类型 [英] qdbusxml2cpp unknown type
问题描述
在使用qdbusxml2cpp程序将以下xml转换为Qt类时,我收到此错误:
While using the qdbusxml2cpp program to convert the following xml to a Qt Class, I am getting this error:
qdbusxml2cpp -c ObjectManager -a ObjectManager:ObjectManager.cpp xml/object_manager.xml
Got unknown type `a{oa{sa{sv}}}'
You should add <annotation name="com.trolltech.QtDBus.QtTypeName.Out0" value="<type>"/> to the XML description
D-Feet描述:
XML:
<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
<node><interface name="org.freedesktop.DBus.Introspectable"><method name="Introspect"><arg name="xml" type="s" direction="out"/>
</method></interface><interface name="org.freedesktop.DBus.ObjectManager"><method name="GetManagedObjects"><arg name="objects" type="a{oa{sa{sv}}}" direction="out"/>
</method><signal name="InterfacesAdded"><arg name="object" type="o"/>
<arg name="interfaces" type="a{sa{sv}}"/>
</signal>
<signal name="InterfacesRemoved"><arg name="object" type="o"/>
<arg name="interfaces" type="as"/>
</signal>
</interface><node name="org"/></node>
从此网站( http://techbase.kde.org/Development/Tutorials/D-Bus/CustomTypes )我理解我需要添加一个注释到XML
From this website ( http://techbase.kde.org/Development/Tutorials/D-Bus/CustomTypes ) I understand that I need to add an annotation to the XML for the tool to work properly.
以下是我到目前为止所做的工作:
Here is what I have so far:
a{oa{sa{sv}}}
https://alteeve.ca/w/List_of_DBus_data_types
o == A UTF-8 string whose value is a valid DBus object path.
array { object_path array { string array { string variant } } }
<arg name="customdata" type="a{sv}" direction="in" />
QVariantMap in the arguments (type "a{sv}")
QMap<QString, QVariant>
但是,我不知道{oa {sa {sv} }},有人可以帮我理解吗?谢谢!
However, I'm not sure what the annotation should be for a{oa{sa{sv}}}, can someone please help me understand? Thanks!
推荐答案
openSUSE imagewriter 是一个GPL许可项目,其中包含如何执行此操作的示例。
(相关文件: udisks2_interface。*
)
openSUSE imagewriter is a GPL licensed project which contains an example of how to do this.
(Relevant files: udisks2_interface.*
)
a {sv}
是字符串的字符串: 。
QVariantMap
将适合此签名。
a{sv}
is a dict of string:variant pairs.
QVariantMap
would fit this signature.
a { sa {sv}}
是字符串的字符串: a {sv}
对。
a{sa{sv}}
is a dict of string:a{sv}
pairs.
QMap<QString, QVariantMap>
would fit this signature.
a {oa {sa {sv}}}
a{oa{sa{sv}}}
is a dict of objectpath:a{sa{sv}}
pairs.
QMap<QDBusObjectPath, QMap<QString, QVariantMap>>
would fit this signature.
我们应该在头文件中隐藏某些typedef后面的尖括号:
We should hide those angle-brackets behind some typedefs in a header file:
typedef QMap<QString, QVariantMap> InterfaceList;
typedef QMap<QDBusObjectPath, InterfaceList> ManagedObjectList;
然后在同一个头文件中声明它们的QMetaTypes:
Then declare their QMetaTypes in the same header file:
Q_DECLARE_METATYPE(InterfaceList)
Q_DECLARE_METATYPE(ManagedObjectList)
$ b b
然后在运行时向Qt元类型系统注册它们:
Then register them with the Qt metatype system at runtime:
qDBusRegisterMetaType<InterfaceList>();
qDBusRegisterMetaType<ManagedObjectList>();
然后我们可以注释XML:
Then we can annotate the XML:
<method name="GetManagedObjects">
<arg type="a{oa{sa{sv}}}" name="objects" direction="out">
<annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="ManagedObjectList"/>
</arg>
</method>
<signal name="InterfacesAdded">
<arg type="o" name="object"/>
<arg type="a{sa{sv}}" name="interfaces">
<annotation name="org.qtproject.QtDBus.QtTypeName.In1" value="InterfaceList"/>
</arg>
</signal>
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