Re: [boost] [Boost Review]Doreallyproperty_treeandprogram_optionsoverlap?

From: Marcin Kalicinski (kalita_at_[hidden])
Date: 2006-04-21 17:22:49

>> : > How would you look at ptree being a possible target format (Archive)
>> : > for boost::serialize ?
>> :
>> : I am not sure I understand: how PT could be an Archive? Archive if I am
>> not
>> : mistaken is the model of permanent storage. PT is the model of 
>> in-memory
>> : storage.
>> ... which is why PT is very complementary.

There are reasons that you might want to have it as an archive target. You 
get archives in JSON, INI, Registry formats for free, and even an 
alternative format for XML. I have actually implemented an Archive class 
that uses ptree, so it definitely is possible and quite easy also. I might 
post it in the future when I make it somewhat more general (it's just a 
quick hack now). Truth is, it is not very fast, but if you want a sample of 
archive in JSON, here you go:

{
    "d":
    {
        "class_id_type": "1",
        "class_name_type": "class Derived",
        "tracking_type": "0",
        "version_type": "0",
        "Base":
        {
            "class_id_optional_type": "0",
            "tracking_type": "0",
            "version_type": "0",
            "b": "78"
        },
        "d": "111"
    },
    "d2":
    {
        "class_id_type": "1",
        "Base":
        {
            "b": "11"
        },
        "d": "146"
    },
    "b":
    {
        "class_id_type": "0",
        "b": "52"
    },
    "i": "3",
    "v":
    {
        "class_id_optional_type": "2",
        "tracking_type": "0",
        "version_type": "0",
        "count": "5",
        "item":
        {
            "count": "3",
            "item": "1",
            "item": "2",
            "item": "3"
        },
        "item":
        {
            "count": "0"
        },
        "item":
        {
            "count": "0"
        },
        "item":
        {
            "count": "0"
        },
        "item":
        {
            "count": "0"
        }
    }
}

Kind regards,
Marcin