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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