[x3d-public] X3D JSON encoding: adding link to schema in a .json document
Don Brutzman
brutzman at nps.edu
Fri Feb 26 11:24:31 PST 2016
On today's X3D JSON call we looked at the (draft) JSON Schema references to see how to identify the governing schema within a .json file.
The draft recommendation and website are currently silent about how to do that.
http://json-schema.org
http://tools.ietf.org/html/draft-zyp-json-schema-04
For now, we added JSON schema url to the appended translation meta tags. Excerpt follows, example attached:
{
"@name":"translated",
"@content":"26 February 2016"
},
{
"@name":"JSON schema",
"@content":"http://www.web3d.org/specifications/x3d-3.3-JSONSchema.json"
},
{
"@name":"generator",
"@content":"X3dToJson.xslt, http://www.web3d.org/x3d/stylesheets/X3dToJson.html"
},
{
"@name":"warning",
"@content":"An experimental version of X3D JSON encoding is used for this scene. Status online at http://www.web3d.org/wiki/index.php/X3D_JSON_Encoding"
}
We can normalize this approach when JSON Schema reference tells how to do it consistently.
all the best, Don
--
Don Brutzman Naval Postgraduate School, Code USW/Br brutzman at nps.edu
Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
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{ "X3D": {
"@profile":"Core",
"@version":"3.3",
"@xsd:noNamespaceSchemaLocation":"http://www.web3d.org/specifications/x3d-3.3.xsd",
"head": {
"meta": [
{
"@name":"title",
"@content":"EmptySceneCoreProfile.x3d"
},
{
"@name":"description",
"@content":"Illustrate a minimalist scene using only Core profile nodes. Root nodes must either be allowed children nodes of a Grouping node, or a LayerSet node. Note that DOCTYPE, head/meta and Group/Metadata* elements can be deleted without losing scene validity."
},
{
"@name":"creator",
"@content":"Leonard Daly, Don Brutzman"
},
{
"@name":"created",
"@content":"24 February 2014"
},
{
"@name":"modified",
"@content":"26 February 2016"
},
{
"@name":"reference",
"@content":"EmptyScene.x3d"
},
{
"@name":"TODO",
"@content":"should Metadata nodes inherit from X3DNode or X3DChildNode?"
},
{
"@name":"reference",
"@content":"http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/concepts.html#Rootnodes"
},
{
"@name":"info",
"@content":"Increase X3D profile (or add component statements) to match if any other X3D nodes are added to this scene."
},
{
"@name":"identifier",
"@content":"http://X3dGraphics.com/examples/X3dForWebAuthors/EmptySceneCoreProfile.x3d"
},
{
"@name":"reference",
"@content":"http://x3dgraphics.com/chapters/Chapter15-MetadataInformation.html"
},
{
"@name":"reference",
"@content":"http://X3dGraphics.com"
},
{
"@name":"generator",
"@content":"X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit"
},
{
"@name":"license",
"@content":"../license.html"
},
{
"@name":"translated",
"@content":"26 February 2016"
},
{
"@name":"JSON schema",
"@content":"http://www.web3d.org/specifications/x3d-3.3-JSONSchema.json"
},
{
"@name":"generator",
"@content":"X3dToJson.xslt, http://www.web3d.org/x3d/stylesheets/X3dToJson.html"
},
{
"@name":"warning",
"@content":"An experimental version of X3D JSON encoding is used for this scene. Status online at http://www.web3d.org/wiki/index.php/X3D_JSON_Encoding"
}
]
},
"Scene": {
"-children":[
{ "#comment":"Core profile can only contain WorldInfo and Metadata nodes."
},
{ "WorldInfo":
{
"-metadata":
{ "MetadataSet":
{
"@name":"NodeSet",
"-value":[
{ "MetadataBoolean":
{
"@name":"BooleanData",
"@value":[true,false]
}
},
{ "MetadataDouble":
{
"@name":"DoubleData",
"@value":[1,2,3]
}
},
{ "MetadataFloat":
{
"@name":"FloatData",
"@value":[4,5,6]
}
},
{ "MetadataInteger":
{
"@name":"IntegerData",
"@value":[7,8,9]
}
},
{ "MetadataString":
{
"@name":"StringData",
"@value":["Empty Scene","Core Profile"]
}
}
]
}
}
}
}
]
}
}
}
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