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Subject: X3J JSON Schema draft
Following is a cut of the X3J JSON schema I've been working on. A newer cut is in the works, with better support for arrays of property values. The PDX example Drummond posted is also translated to the newer version, but I want to work on the link contract bit a little before posting that.
{
"version":"0.5.1",
"id":"X3J",
"description":"XDI graph in JSON",
"type":"object",
"properties":{
"id":{
"optional":true,
"type":"string",
"format":"XRI",
"description":"Identifier for graph, an XRI"
},
"prefixes:{
"optional":true,
"type":"array",
"items":{
"type":"string"
}
},
"tags":{
"optional":true,
"type":"array",
"items":{
"type":"string"
}
},
"content":{
"properties":{
},
"additionalProperties":{
"type":"object",
"description":"subject",
"optional":"true",
"properties":{
},
"additionalProperties":{
"type":"array",
"description":"predicate",
"optional":"true",
"items":{
"description":"object",
"type": [
{
"type":"object",
"description":"Object value that is an XRI",
"properties":{
"xri": {"type":"string", "format":"xri"}
}
},
{
"type":"object",
"description":"Object value that is a non-string literal",
"properties":{
"format": {"type":"string", "description":"MIME Media type for data value"},
"value": {"type":"string"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:string literal with an optional language specified",
"properties":{
"string": {"type":"string", "description":"The string value"},
"lang": {
"type":"string",
"format":"ftp://ftp.isi.edu/in-notes/bcp/bcp47.txt";,
"optional":true
}
}
},
{
"type":"object",
"description":"Object value that is a xsd:duration",
"properties":{
"duration": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:dateTime",
"properties":{
"dateTime": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:time",
"properties":{
"time": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:date",
"properties":{
"date": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:gYearMonth",
"properties":{
"gYearMonth": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:gYear",
"properties":{
"gYear": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:gMonth",
"properties":{
"gMonth": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:gMonthDay",
"properties":{
"gMonthDay": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:gDay",
"properties":{
"gDay": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:gMonth",
"properties":{
"gMonth": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:boolean",
"properties":{
"boolean": {"type":"boolean", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:base64binary",
"properties":{
"base64binary": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:hexBinary",
"properties":{
"hexBinary": {"type":"string", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:float",
"properties":{
"float": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:double",
"properties":{
"double": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:decimal",
"properties":{
"decimal": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:integer",
"properties":{
"integer": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:nonPositiveInteger",
"properties":{
"nonPositiveInteger": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:negativeInteger",
"properties":{
"negativeInteger": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:long",
"properties":{
"long": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:int",
"properties":{
"int": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:short",
"properties":{
"short": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:byte",
"properties":{
"byte": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:nonNegativeInteger",
"properties":{
"nonNegativeInteger": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:unsignedLong",
"properties":{
"unsignedLong": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:positiveInteger",
"properties":{
"positiveInteger": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:unsignedInt",
"properties":{
"unsignedInt": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:unsignedShort",
"properties":{
"unsignedShort": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a xsd:unsignedByte",
"properties":{
"unsignedByte": {"type":"number", "description":"The value"}
}
},
{
"type":"object",
"description":"Object value that is a context",
"properties":{
"/": {
"type":"object",
"description":"The XDI-JSON for the context content"
"schema": {
"version":"0.5.1",
"id":"X3J"
}
}
}
}
]
}
}
}
}
}
Two caveats:
------------
- XDI prefixes working model : take form of {nsprefix}..{name}, ex pdx..$address
- Referencing a schema that's recursive..., not in JSON Schema spec AFAIK , went with form of:
{
"type":"object",
"schema": {
"version":"0.5.1",
"id":"XDI-JSON"
}
}
Next step is to take an example XDI document, maybe PDX example is a a good one that's publicly releasable, convert it to X3J, and validate against the above schema using http://james.newtonking.com/projects/json/schema.aspx. I've already started on that and expect to have it finished by the end of the weekend.
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