sorry, i made a mistake.
it does look like tinkerpop blueprints does not support composite indices.
https://github.com/tinkerpop/blueprints/wiki/Graph-Indices
so in your case it is not possible to use the getvertexbykey api the way
you intended to.
~nagu.
On Monday, July 27, 2015 at 6:58:22 PM UTC+5:30, Parthasarathy
Suryanarayanan wrote:
>
> I must be missing something. Which property are you referring to? There
> are four properties (key1...key4) that constitute the composite key (which,
> I assume is not considered to be a "property" of vertex, or is it?)
> Can you specify how the below line should be modified?
> Vertex exists = graph.getVertexByKey("<WHAT_GOES_HERE>", new
> Object[]{key1_val, key2_val, key3_val, key4_val});
>
>
> On Monday, July 27, 2015 at 2:52:20 AM UTC-4, nagaraja sosale ramaswamy
> wrote:
>>
>> the argument to getVertexByKey is the property name on which the index is
>> created, not the name of the index itself.
>>
>> check the javadocs:
>> Parameters:
>> iKey - Name of the indexed property
>>
>> so like i said, if you want the Method 3 to work (assuming the property
>> name on Entity class is Id, against which you have created an index with
>> name Entity.Id) you need to pass the argument as Id, not Entity.Id.
>>
>>
>> ~nagu.
>>
>>
>> On Monday, July 27, 2015 at 11:34:43 AM UTC+5:30, Parthasarathy
>> Suryanarayanan wrote:
>>>
>>> It is a composite index (with the name "Entity.Id") of properties (key1,
>>> key2, key3, key4) on the class "Entity".
>>>
>>> To be clear:
>>> Method 1: select from index:Entity.id where key = [1224736769, 2, 14, 22]
>>> Method 2:
>>> for (Vertex entity : graph.getVertices("Entity", new String[] { "key1",
>>> "key2", "key3",
>>> "key4" }, new Object[] { key1_val, key2_val, key3_val, key4_val
>>> })) {
>>> return (OrientVertex) entity;
>>> //there really shouldn't be more than one as this is a unique
>>> index but this seems like a hack
>>> }
>>> Method 3: Vertex exists = graph.getVertexByKey("Entity.Id", new
>>> Object[]{key1_val, key2_val, key3_val, key4_val});
>>>
>>> Method 1, Method 2 works. But not Method 3 (which I want to work)
>>>
>>> On Sunday, July 26, 2015 at 5:58:38 PM UTC-4, nagaraja sosale ramaswamy
>>> wrote:
>>>>
>>>> you probably meant to write:
>>>>
>>>> Vertex exists = graph.getVertexByKey("Id", new Object[]{key1, key2,
>>>> key3, key4});
>>>>
>>>> (assuming the property name on Entity Vertex is Id)
>>>>
>>>>
>>>>
>>>> On Monday, July 27, 2015 at 12:30:06 AM UTC+5:30, Parthasarathy
>>>> Suryanarayanan wrote:
>>>>>
>>>>> After adding many instances of OrientVertex, I created a composite
>>>>> index using some of the properties like the following
>>>>> <MY_OClass>.createIndex("Entity.Id", "UNIQUE", new String[]{key1,
>>>>> key2, key3, key4});
>>>>> ..where the key1..4 are of INTEGER type (not sure if this the right
>>>>> way to create the composite key).
>>>>> Now I am trying to verify if the entity exists before trying to add
>>>>> one, like the following
>>>>> Vertex exists = graph.getVertexByKey("Entity.Id", new
>>>>> Object[]{key1, key2, key3, key4});
>>>>>
>>>>> But the value of the exists is always null. Note that I could always
>>>>> query in the console
>>>>> select from index:Entity.id where key = [1224736769, 2, 14, 22]
>>>>> and get the appropriate entity back. I just want to be sticking to
>>>>> the graph API in my java code.
>>>>>
>>>>> What am I doing wrong? Thanks for your help.
>>>>>
>>>>>
>>>>>
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