[Neo] Request a sample code to illustrate finding all nodes where key < value

Mattias Persson mattias at neotechnology.com
Tue Jan 12 11:15:07 CET 2010


That's strange, let me have a look at it... I'll try such an example
and see if I can figure out why it isn't working!

2010/1/12 Zerony Zhao <bw.linux at gmail.com>:
> Thanks for your reply.
>
> Since I am trying to search a range of integer, index.getNodes( "someKey",
> "[0 TO 1]" ) will returns node with "somekey" value such as 1, 11, 111
> supposing having 1, 11, 111, but I only want returning 1 exactly. I know one
> of solution is using padding scheme to solve the problem. Is there any other
> ways to solve the problem?
>
> On Sun, Jan 10, 2010 at 1:34 PM, Mattias Persson
> <mattias at neotechnology.com>wrote:
>
>> I'm almost positive I gave such an example in another thread
>> recently... anyways:
>>
>> IndexService index = new LuceneFulltextQueryIndexService( neo );
>> index.index( myNode1, "someKey", 150 );
>> index.index( myNode2, "someKey", 100 );
>> index.index( myNode3, "someKey", 170 );
>> index.index( myNode4, "someKey", 230 );
>>
>> // This will return myNode1, myNode2 and myNode3
>> index.getNodes( "someKey", "[0 TO 170]" );
>>
>> See
>> http://lucene.apache.org/java/2_9_1/queryparsersyntax.html#Range%20Searches
>> for more information.
>>
>> 2010/1/10 Zerony Zhao <bw.linux at gmail.com>:
>> > Hi Neo4j Users,
>> >
>> > I have a naive question, since I just began learning Neo4j.
>> >
>> > I know how to find nodes where property key matchs value,
>> >
>> > indexService.getNodes(key, value);
>> >
>> > But I do not know the efficient way to find key < value, given the key is
>> an
>> > int property. In another thread, Tobias wrote several days ago:
>> >
>> > If your queries are as simple as "give me all nodes where x>LOWER_LIMIT
>> and
>> > x<UPPER_LIMIT ordered by x", and you can reduce the x property to a long
>> > integer value.
>> >
>> > But I do not know how to , would you kindly give me a snapshot of code to
>> > illustrate how to find all nodes where key < value.
>> >
>> > Appreciate your help.
>> >
>> > Zerony
>> > _______________________________________________
>> > Neo mailing list
>> > User at lists.neo4j.org
>> > https://lists.neo4j.org/mailman/listinfo/user
>> >
>>
>>
>>
>> --
>> Mattias Persson, [mattias at neotechnology.com]
>> Neo Technology, www.neotechnology.com
>> _______________________________________________
>> Neo mailing list
>> User at lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
>>
> _______________________________________________
> Neo mailing list
> User at lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
>



-- 
Mattias Persson, [mattias at neotechnology.com]
Neo Technology, www.neotechnology.com


More information about the User mailing list