Re: [geomesa-users] Assistance with creating attribute indexes?

[Aaron Simmons <a.simmons@xxxxxxxxxx>]

Thanks so much for the quick reply!

I noticed that you use the syntax 'index=full' in this line:
"Who:String:index=full"

I was trying to use "index=true" / "index=false" based on what I had gleaned from various examples--this one in particular from https://github.com/locationtech/geomesa/blob/accumulo1.5.x/1.x/geomesa-utils/src/main/scala/org/locationtech/geomesa/utils/geotools/SimpleFeatureTypes.scala line 456:
/*
     Valid specs can have attributes that look like the following:
        "id:Integer:opt1=v1:opt2=v2,*geom:Geometry:srid=4326,ct:List[String]:index=true,mt:Map[String,Double]:index=false"
*/

  Is "index=full" the correct syntax to use?

..

I just tried following the code in SpecParser -- I stumbled on this:
https://github.com/locationtech/geomesa/blob/accumulo1.5.x/1.x/geomesa-utils/src/main/scala/org/locationtech/geomesa/utils/stats/IndexCoverage.scala

I believe those values of "full", "join", "none" are valid for the ":index=____" .. is that correct?

-Aaron

________________________________________
From: geomesa-users-bounces@xxxxxxxxxxxxxxxx <geomesa-users-bounces@xxxxxxxxxxxxxxxx> on behalf of Chris Eichelberger <cne1x@xxxxxxxx>
Sent: Thursday, April 23, 2015 11:25 AM
To: Geomesa User discussions
Subject: Re: [geomesa-users] Assistance with creating attribute indexes?

Aaron,

This is a great question.  You are right about using the
SimpleFeatureTypes class; that is the easiest way.  I checked the
quick-start tutorial, and found that we hadn't updated it to show using
secondary indexes, so I made that change this morning, and pushed it up.
The relevant lines to reference as a working example are here:

https://github.com/geomesa/geomesa-quickstart/blob/master/src/main/java/org/geomesa/QuickStart.java#L126-L136

I hope this helps.  If not, or if you continue to encounter issues,
please just let me know.

Thanks!

Sincerely,
  -- Chris


On Thu, 2015-04-23 at 06:02 +0000, Aaron Simmons wrote:
> What is the correct way to create a geomesa table with attribute
> indexes specified on one or more fields?
>
>
>
> I have found that using ***DataUtilities.createType( ... ) seems to
> ignore all of my ":index=true" e.g.
> Field1:String:index=true,Field2:String:index=false,Field3:String:index=true
>
>
> Then I figured out that using +++SimpleFeatureTypes​.createType( ... )
> seemed to work better.  But then my code for adding records ran into a
> bizarre run-time error: Feature '[name]' has not been initialized.
> Please call 'createSchema' first.
>
>
>
> ***DataUtilities => org.geotools.data.DataUtilities
>
>
> +++SimpleFeatureTypes => org.locationtech.geomesa.utils.geotools.SimpleFeatureTypes
>
>
>
> ..
>
>
>
> What is the proper way to create a new geomesa table, specifying one
> or more attributes [besides geotemporal] to be indexed?  I am trying
> to take advantage of the *_attr_idx table, but it's not clicking for
> me.
>
>
>
> Thanks.
>
>
>
> -Aaron
>
>
>
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