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From Yoom Nguyen <y...@misoccer.us>
Subject Re: help for a fee -- using filters to search data in hbase for correct results
Date Fri, 03 Feb 2017 22:46:41 GMT
Hi Ted, 

Release 0.98.8 - 11/18/2014 

The code get mess up when I sent it through my email client. Here is the snapshoot of it.


Thanks, 




----- Original Message -----

From: "Yoom Nguyen" <yoom@misoccer.us> 
To: dev@hbase.apache.org 
Sent: Friday, February 3, 2017 5:14:48 PM 
Subject: help for a fee -- using filters to search data in hbase for correct results 




I am having problems using filters to search data in hbase . 
First I am reading some data from one table and storing in a vector or arrayList : Is there
a better way or different approach to achieve the results than what I am heading? 
I am stuck trying to get the correct results with the following approach. Wondering if any
one know HBASE \ Java well and willing to help out for a fee. I need to get over this problem.

If anyone is willing to help for a fee, send me an email at yoom @ misoccer .us 

for ( Result r : rs ) { for ( KeyValue kv : r . raw ()) { if ( new String ( kv . getFamily
()). equals ( "name" )) { temp = new String ( kv . getValue ()); x . addElement ( temp );
} } } 
Then, I want to search a different table based on the values of this vector. I used filters
to do this: (I tried BinaryPrefixComparator and BinaryComparator as well) FilterList filterList
= new FilterList ( FilterList . Operator . MUST_PASS_ONE ); for ( int c = 0 ; c < x . size
(); c ++) { System . out . println ( x . get ( c ). toString ()); filterList . addFilter (
new SingleColumnValueFilter ( Bytes . toBytes ( "name" ), null , CompareOp . EQUAL , new SubstringComparator
( x . get ( c ). toString () ))); } 
I should get 3 results back, however I only get one result back, the first entry in the database.
What doesn't make sense is that when I hardcode the value that I am looking for into my code,
I will get all 3 results back. 
I thought there might be some issue with converting the bytes to String and then back to bytes,
but that would not explain how it was able to bring back the first result. For some reason,
it is stopping at the first match and doesn't continue to find the other 2 rows that contain
matching data. If I hardcode it i get the results: x . addElement ( "abc123" ); filterList
. addFilter ( new SingleColumnValueFilter ( Bytes . toBytes ( "name" ), null , CompareOp .
EQUAL , new SubstringComparator ( x . get ( 0 ). toString () ))); 
Does anyone know what the problem is or what I need to do to resolve my issue? Your help is
much appreciated. 
Thank You 
edit: Here is the contents of the tables: 
TABLE1: ROW COLUMN+CELL 
0 column= gpnum :, timestamp =1481300288449, value=def123 
0 column= mpnum :, timestamp =1481300273355, value= abc123 
0 column=price:, timestamp =1481300255337, value=85.0 
1 column= gpnum :, timestamp =1481301599999, value=def2244 
1 column= mpnum :, timestamp =1481301582336, value= 011511607 
1 column=price:, timestamp =1481301673886, value=0.76 
TABLE2 
ROW COLUMN+CELL 
0 column=brand:, timestamp =1481300227283, value=x 
0 column= mpnum :, timestamp =1481300212289, value= abc123 
0 column=price:, timestamp =1481300110950, value=50.0 
1 column= mpnum :, timestamp =1481301806687, value= 011511607 
1 column=price:, timestamp =1481301777345, value=1.81 
13 column= webtype :, timestamp =1483507543878, value=US 
3 column=avail:, timestamp =1481306538360, value=avail 
3 column=brand:, timestamp =1481306538360, value=brand 
3 column= descr :, timestamp =1481306538360, value=description 
3 column=dist:, timestamp =1481306538360, value=distributor 
3 column= mpnum :, timestamp =1481306538360, value= pnum 
3 column=price:, timestamp =1481306538360, value=price 
3 column= url :, timestamp =1481306538360, value= url 
3 column= webtype :, timestamp =1481306538360, value= webtype 
4 column=avail:, timestamp =1481306538374, value=4 
4 column=brand:, timestamp =1481306538374, value=x 
4 column= descr :, timestamp =1481306538374, value=description 
4 column=dist:, timestamp =1481306538374, value=x 
4 column= mpnum :, timestamp =1482117383212, value= 011511607 
4 column=price:, timestamp =1481306538374, value=34.51 
4 column= url :, timestamp =1481306538374, value=x 
4 column= webtype :, timestamp =1481306538374, value=US 
5 column=avail:, timestamp =1481306538378, value= 
5 column=brand:, timestamp =1481306538378, value=name 
5 column= descr :, timestamp =1481306538378, value=x 
5 column=dist:, timestamp =1481306538378, value=x 
5 column= mpnum :, timestamp =1482117392043, value= 011511607 
5 column=price:, timestamp =1481306538378, value=321.412 
5 column= url :, timestamp =1481306538378, value=x.com 
THIRD TABLE (to store result matches) 
0 column=brand:, timestamp =1481301813849, value=name 
0 column= cprice :, timestamp =1481301813849, value=1.81 
0 column= gpnum :, timestamp =1481301813849, value=def2244 
0 column= gprice :, timestamp =1481301813849, value=0.76 
0 column= mpnum :, timestamp =1481301813849, value=011511607 
**should be three matches those that are in bold above but only brings back one match 
If anyone is willing to help for a fee, send me an email at yoom @ misoccer .us 


Thanks, 
Yoom 



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