You are right,
select from MyV set element_name = "myv"
should be
update MyV set element_name = "myv"
sorry.
>From within bulbs you can create a vertex of type "MyV" by doing
In [9]: data = {"@class":"MyV","ovgid":"test1", "element_type":"MyV"}
> In [10]: v=g.vertices.create(data)
On Tuesday, April 21, 2015 at 10:37:52 AM UTC-7, Kevin I wrote:
>
> @kyle,
>
> Sorry to get back so late. I can't quite wrap my head around this. From
> what you've said and I understand from the docs and from fiddling with the
> console, this is what I've understood:
>
> 1. In orientdb, all classes are identified with the `@CLASS` property just
> like the classes in Bulbs are identified with `element_type` property.
> 2. A Class cannot be changed in orientdb, once it is created.
>
> I have the following classes in Bulbs for example :
> Student, Staff, Subject, Branch
>
> Now, I need to create lucene indexes for which I cannot use Bulbs. So, I
> get into the Orientdb console. As you said, I tried creating the class
> `Student` in orientdb too, like this:
>
> `create class Student extends V`
>
> But, still all the above 4 bulbs class type objects are shown as `V`
> objects in orientdb. ie. the number of `Student` records in orientDB is 0.
>
> So, in short, what I want to do is to convert the `V` type records to the
> `Student`, `Staff`, `Subject` and `Branch` type records in OrientDB, so
> that I can create indices in Lucene for my search module.
>
> Also, I tried your command :
> `select from MyV set element_name = "myv"`
> but it throwed a syntax error.
>
> Thank you for your help so far. Looking ahead for your reply!
>
> On Wed, Apr 15, 2015 at 11:58 PM, <ky...@ovguideinc.com <javascript:>>
> wrote:
>
>> <class-name> refers to classes defined in Orientdb.
>>
>> http://orientdb.com/docs/last/orientdb.wiki/Tutorial-Classes.html
>>
>> Useful default classes are "V" for vertices, and "E" for edges.
>>
>> You can define a new classes like:
>>
>> create class MyV extends V
>> create class MyE extends E
>>
>> you can do
>>
>> create property V.element_name STRING
>> select from MyV set element_name = "myv"
>>
>> (all above are osql console commands)
>> to create an element name property, and populate all records of that
>> class with a string representing that property (this relates to what I
>> mentioned before about not seeing any way to access the "@class" field in
>> bulbs).
>>
>> You can now create bulbs model classes that correspond to the classes in
>> Orientdb itself. "element_name" is the default field name to associate
>> graphdb records with bulbs python model classes, it can be changed if
>> something else works better for you.
>>
>>
>> On Tuesday, April 14, 2015 at 9:05:33 PM UTC-7, Kevin I wrote:
>>>
>>> Thank you very much ky...! I've installed pyorient.
>>>
>>> But now, what is this class name here :
>>>
>>> CREATE INDEX <name> ON <class-name> (prop-names) FULLTEXT ENGINE LUCENE
>>>
>>>
>>> as found in this wiki here
>>> <https://github.com/orientechnologies/orientdb-lucene/wiki/Full-Text-Index>?
>>>
>>> I tried using the Bulbs model class name and obviously it didn't work. Do I
>>> have to define separate classes for this? If so, can you please show how to
>>> do it?
>>>
>>> Thanks!
>>>
>>>
>>> On Wednesday, April 15, 2015 at 12:13:11 AM UTC+5:30,
>>> ky...@ovguideinc.com wrote:
>>>>
>>>> I'm pretty certain you can't create these fancy orientdb indices via
>>>> bulbs.
>>>>
>>>> ----
>>>> This open issue is about adding support to directly talk to orientdb
>>>> via the REST api.
>>>> https://github.com/espeed/bulbs/issues/128
>>>> I'd very much like this feature!
>>>>
>>>> ----
>>>> you can use pyorient to talk to orientdb in python:
>>>> https://github.com/mogui/pyorient
>>>>
>>>> ----
>>>>
>>>> Additionally, there are serialization issues with custom orientdb stuff.
>>>>
>>>> e.g, a list of
>>>> EMBEDDED SETS/LISTS get serialized as:
>>>> u'kind': u'[tv_tv_program, film_film]'
>>>>
>>>> I've noticed DATE fields getting serialized as:
>>>> u'modified': u'Wed Apr 01 15:58:46 PDT 2015',
>>>> which can cause problems (e.g, schema violation when not turned back
>>>> into date) when trying to save via bulbs
>>>>
>>>> LINKLIST/SET properties are serialized as
>>>> u'cast':
>>>> u'com.tinkerpop.blueprints.impls.orient.OrientElementIterable@3949de91',
>>>> which is completely unworkable. The only workaround I know is judicious
>>>> use of server side gremlin scripts.
>>>>
>>>> Bulbs doesn't seem to have access to the "@class" property so you can't
>>>> know the class of a record without adding another field to record that, I
>>>> think this is a problem at the rexster level though I am unsure.
>>>>
>>>> The date and embedded set/list problems can easily be fixed by
>>>> subclassing the Property class in
>>>> https://github.com/espeed/bulbs/blob/master/bulbs/property.py
>>>> and creating custom conversion to/from python/orientdb.
>>>>
>>>>
>>>> On Tuesday, April 14, 2015 at 8:33:15 AM UTC-7, Kevin I wrote:
>>>>>
>>>>> I just realized that I'm trying to interpret the SQL query with the
>>>>> Gremlin interpreter.
>>>>>
>>>>> Still I don't know how to execute it.
>>>>>
>>>>> On Tuesday, April 14, 2015 at 9:01:17 PM UTC+5:30, Kevin I wrote:
>>>>>>
>>>>>> I have the Lucene index plugin installed and active. I just can't
>>>>>> figure out how to create indices. I tried this:
>>>>>>
>>>>>> g.gremlin.execute('create index Student.name on Student (name)
>>>>>> fulltext engine lucene')
>>>>>>
>>>>>> but it doesn't work. Returns the following error:
>>>>>>
>>>>>> SystemError: ({'status': '500', 'transfer-encoding': 'chunked',
>>>>>> 'server': 'grizzly/2.2.16', 'connection': 'close', 'date': 'Tue, 14
>>>>>> Apr 2015 20:54:50 GMT', 'access-control-allow-origin': '*',
>>>>>> 'content-type': 'application/json'},
>>>>>> '{"message":"","error":"javax.script.ScriptException:
>>>>>> groovy.lang.MissingPropertyException: No such property: index for class:
>>>>>> Script5","api":{"description":"evaluate an ad-hoc Gremlin script for a
>>>>>> graph.","parameters":{"returnTotal":"when set to true, the full result
>>>>>> set
>>>>>> will be iterated and the results returned (default is
>>>>>> false)","rexster.returnKeys":"an array of element property keys to
>>>>>> return
>>>>>> (default is to return all element
>>>>>> properties)","rexster.showTypes":"displays the properties of the
>>>>>> elements
>>>>>> with their native data type (default is false)","load":"a list of
>>>>>> \'stored
>>>>>> procedures\' to execute prior to the \'script\' (if \'script\' is not
>>>>>> specified then the last script in this argument will return the
>>>>>> values","rexster.offset.end":"end index for a paged set of data to be
>>>>>> returned","rexster.offset.start":"start index for a paged set of data to
>>>>>> be
>>>>>> returned","params":"a map of parameters to bind to the script
>>>>>> engine","language":"the gremlin language flavor to use (default is
>>>>>> groovy)","script":"the Gremlin script to be
>>>>>> evaluated"}},"success":false}'
>>>>>> )
>>>>>>
>>>>>> What am I missing here?
>>>>>>
>>>>> --
>>
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>
>
>
> --
> Always remember that the world around you is made by people that are no
> smarter than you and me.
>
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