[Handle-info] OpenHandle: An Update

["Hammond, Tony" <t.hammond@nature.com>]

Hi All:

Just a quick update on the OpenHandle project since last mail on the subject
(March 14). See project home page at:

    http://openhandle.googlecode.com/

We added in a flag to allow for two forms - compact and full, where the
former is now the default return and presents simple string forms for admin
data fields and types which is more appropriate for may users. (See below
for examples.)

We've also moved all handle URI refs to use 'hdl:' scheme instead of
'info:hdl/' and to use querystrings instead of fragment identifiers for
addressing values, e.g.

    hdl:10100/10.1038/nri1842?index=100

Also we've beefed up the gallery page with some additional handle specimens
roaming in the wild. There are also a growing number of code examples to
show that handle really can be accessed from a growing number of programming
environments. Languages include:

  * Ruby
  * Python
  * PHP
  * Perl
  * Lisp
  * Applescript

And yes, I know. Java and especially (and ironically) JavaScript are still
outstanding. (For the latter need to deal with JavaScript's cross-domain
security policy by using a) dynamic script tags, or b) a JSONP callback.)

There's also a to-do list for anybody who's interested in give the project a
scope.

Cheers,

Tony

 
###
Here's the 'compact'/'full' form comparisons for JSON. There's also
corresponding 'compact'/'full' forms for RDF/XML and RDF/N3.

a) Handle value in JSON - 'compact' form

        {
            "index" : "100" ,
            "type" : "HS_ADMIN" ,
            "data" : {
                "adminRef" : "hdl:10100/10.1038/nri1842?index=100" ,
                "adminPermission" : "111111111111"
            } ,
            "permission" : "1110" ,
            "ttl" : "+86400" ,
            "timestamp" : "Sun Nov 25 13:33:30 GMT 2007" ,
            "reference"  : []
        }

a) Handle value in JSON - 'full' form

        {
            "index" : "100" ,
            "type" : "HS_ADMIN" ,
            "data" : {
                "adminRef" : {
                    "handle" : "hdl:10100/10.1038/nri1842" ,
                    "handleValueIndex" : "100"
                } ,
                "adminPermission" : {
                    "readValue" : "true" ,
                    "addNa" : "true" ,
                    "deleteHandle" : "true" ,
                    "addAdmin" : "true" ,
                    "removeValue" : "true" ,
                    "deleteNa" : "true" ,
                    "addValue" : "true" ,
                    "addHandle" : "true" ,
                    "listHandles" : "true" ,
                    "removeAdmin" : "true" ,
                    "modifyValue" : "true" ,
                    "modifyAdmin" : "true"
                 }
            } ,
            "permission" : {
                "adminRead" : "true" ,
                "adminWrite" : "true" ,
                "publicRead" : "true" ,
                "publicWrite" : "false"
            } ,
            "ttl" : {
                "ttlType" : "0" ,
                "ttlValue" : "86400"
            } ,
            "timestamp" : "Sun Nov 25 13:33:30 GMT 2007" ,
            "reference"  : {
                "referenceCount" : "0" ,
                "referenceList" : [
                ]
            }
        } ,
 


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