[x3d-public] Proposal for MetadataVersion (like MetadataSet), any number of dimensions

[John Carlson]

I want 2 more fields beyond MetadataSet, below.

I want a MetadataVersion to call it out as different from MetadataSet.

I realized that I can give the MetadataSet a "version" name.

I also want to achieve a crontab-like or scheduling feature.

Ideally, I could provide field-like nodes or statements for version
information separate from axes.

The idea is to create a vector-like object to maintain time series data

and version data, and for building information, bill or materials,
etc.  There may already be something in X3D,

but I've not spotted it yet...CAD?

The goal is to put this into a SQL database, such that I can input and
output different versions of the JSON or JSON objects and arrays,
watch the JSON change through time, etc.  The whole history of the
document is stored.


If the axes field is unacceptable, can we have a version field in MetadataSet?


Basically, I need a way to separate version and dimensional data from
ordinary MetadataSets.

MetadataVersion: MetadataSet

{

  MFNode axes NULL [X3DMetadataObject]

  MFString version '"0"'

// Add everything from MetadataSet.

// Default containerField is axes, not value or metadata.
}

Possible axes are below:

<MetadataVersion version='"A"'>

<MetadataVersion version='"1" "b"'>

<MetadataInteger name="count" value="3"/>

<MetadataDouble  name="quantity" value="3.5"/>

<MetadataString  name="unit" value='"mg"'/>

<MetadataDouble name="mg" value="0.4"/>

<MetadataDouble name="x" value="1.0"/>

<MetadataDouble name="y" value="4.0"/>

<MetadataDouble name="z" value="9.0"/>

<MetadataInteger name="century" value="2000"/>

<MetadataInteger name="score" value="20"/>

<MetadataInteger name="decade" value="20"/>

<MetadataInteger name="year" value="2025"/>

<MetadataInteger name="decade" value="20"/>

<MetadataInteger name="month" value="4"/>

<MetadataInteger name="fortnight" value="3"/>

<MetadataInteger name="week" value="6"/>

<MetadataInteger name="day" value="2"/>

<MetadataInteger name="pm" value="10"/>

<MetadataInteger name="24" value="22"/>

<MetadataInteger name="minute" value="51"/>

<MetadataInteger name="second" value="0"/>

<MetadataDouble name="subsecond" value="0.0025"/>

</MetadataVersion>

</MetadataVersion>
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