geotools-gt2-users — Help and support for GeoTools users

Re: [Geotools-gt2-users] osgeo.org domain is down

[Jody G. <jod...@gm...>]

Yes, it remains down.

Checking on the osgeo chat channel the DNS provider is aware of the issue
and is working on it.  There is speculation it may be a DOS attack as other
domains on the same nameserver are fine ...

I have been checking with https://isitup.org/osgeo.org :)
--
Jody Garnett


On Thu, May 18, 2023 at 1:19 PM Vince Marinelli via GeoTools-GT2-Users <
geo...@li...> wrote:

> I am unable to reach the osgeo.org domain. This is causing Maven builds
> to fail for me with the error:
>
> ...org.geotools:gt-opengis:jar:24.6: Failed to read artifact descriptor
> for org.geotools:gt-opengis:jar:24.6: The following artifacts could not be
> resolved: org.geotools:gt-opengis:pom:24.6 (absent): Could not transfer
> artifact org.geotools:gt-opengis:pom:24.6 from/to osgeo (
> https://repo.osgeo.org/repository/release/): repo.osgeo.org: Temporary
> failure in name resolution: Unknown host repo.osgeo.org: Temporary
> failure in name resolution...
>
> It appears that it has been for at least a few hours now.
>
> --
> *Vince Marinelli*
> Principal Software Engineer
> *Workiva Inc.*
>
> *eMail:* vin...@wo...
> *Mobile:* (610) 220-6311
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>

[Geotools-gt2-users] osgeo.org domain is down

[Vince M. <vin...@wo...>]

I am unable to reach the osgeo.org domain. This is causing Maven builds to
fail for me with the error:

...org.geotools:gt-opengis:jar:24.6: Failed to read artifact descriptor for
org.geotools:gt-opengis:jar:24.6: The following artifacts could not be
resolved: org.geotools:gt-opengis:pom:24.6 (absent): Could not transfer
artifact org.geotools:gt-opengis:pom:24.6 from/to osgeo (
https://repo.osgeo.org/repository/release/): repo.osgeo.org: Temporary
failure in name resolution: Unknown host repo.osgeo.org: Temporary failure
in name resolution...

It appears that it has been for at least a few hours now.

-- 
*Vince Marinelli*
Principal Software Engineer
*Workiva Inc.*

*eMail:* vin...@wo...
*Mobile:* (610) 220-6311

Re: [Geotools-gt2-users] Introduction to GeoTools swing tools

[Ian T. <ijt...@gm...>]

That sounds like a great addition, I have a feeling that I planned to go
back and do that when I added mouse wheel support, but never got around to
it.

Ian

On Wed, 10 May 2023, 00:37 Leif Gruenwoldt, <le...@gm...> wrote:

> This is really cool Ian.
>
> My team use the geotools swing example in a couple of our projects,
> it's great to see tutorials like this. This is really helpful.
>
> As an aside, I've been meaning to submit a pull request for the swing
> example that improves the zoom tool to make it behave like Google Maps
> (and most any other modern GIS). It makes the mouse wheel zoom in
> relative to the cursor position in the window.
>
>
> Leif
>
>
>
> On Mon, May 8, 2023 at 10:20 AM Ian Turton <ijt...@gm...> wrote:
> >
> > If you ever wondered how to add a tool to the GeoTools swing map then
> I've written a short introduction to it. There is also a link to a small
> project that provides a tool to draw lines on a map.
> >
> > See
> https://blog.ianturton.com/geotools/2023/05/08/drawing-on-a-geotools-map.html
> for all the gory details.
> >
> > cheers
> >
> > Ian
> >
> > --
> > Ian Turton
> > _______________________________________________
> > GeoTools-GT2-Users mailing list
> > Geo...@li...
> > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>

Re: [Geotools-gt2-users] Introduction to GeoTools swing tools

[Leif G. <le...@gm...>]

This is really cool Ian.

My team use the geotools swing example in a couple of our projects,
it's great to see tutorials like this. This is really helpful.

As an aside, I've been meaning to submit a pull request for the swing
example that improves the zoom tool to make it behave like Google Maps
(and most any other modern GIS). It makes the mouse wheel zoom in
relative to the cursor position in the window.

Leif



On Mon, May 8, 2023 at 10:20 AM Ian Turton <ijt...@gm...> wrote:
>
> If you ever wondered how to add a tool to the GeoTools swing map then I've written a short introduction to it. There is also a link to a small project that provides a tool to draw lines on a map.
>
> See https://blog.ianturton.com/geotools/2023/05/08/drawing-on-a-geotools-map.html for all the gory details.
>
> cheers
>
> Ian
>
> --
> Ian Turton
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users

Re: [Geotools-gt2-users] Introduction to GeoTools swing tools

[Jody G. <jod...@gm...>]

Hey thanks :)

The docs can of course link to related resources at the end of the
tutorials :)

On Mon, May 8, 2023 at 7:20 AM Ian Turton <ijt...@gm...> wrote:

> If you ever wondered how to add a tool to the GeoTools swing map then I've
> written a short introduction to it. There is also a link to a small project
> that provides a tool to draw lines on a map.
>
> See
> https://blog.ianturton.com/geotools/2023/05/08/drawing-on-a-geotools-map.html
> for all the gory details.
>
> cheers
>
> Ian
>
> --
> Ian Turton
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>
-- 
--
Jody Garnett

[Geotools-gt2-users] Introduction to GeoTools swing tools

[Ian T. <ijt...@gm...>]

If you ever wondered how to add a tool to the GeoTools swing map then I've
written a short introduction to it. There is also a link to a small project
that provides a tool to draw lines on a map.

See
https://blog.ianturton.com/geotools/2023/05/08/drawing-on-a-geotools-map.html
for all the gory details.

cheers

Ian

-- 
Ian Turton

Re: [Geotools-gt2-users] Geometry or WKT or SimpleFeature encode to GML in GeoTools 20.5

[Taavi I. <ta...@ea...>]

Hi

Found information about JDK support here:
https://docs.geotools.org/latest/userguide/build/install/jdk.html

"Java 8 - GeoTools 15.x up to and including GeoTools 28.x (OpenJDK and
Oracle JRE tested)"

So you could try to upgrade to GeoTools 28.x with Java 8. I've
upgraded from 22.x quite recently with not too big application and
there were roadblocks with few versions, so I suggest going one major
release at the time. I also noticed that even minor versions could
behave differently. I really depends on your application.

Cheers,
Taavi

On Tue, May 2, 2023 at 7:38 PM Mieke Zwart <mie...@as...> wrote:
>
> Hello list,
>
>
>
> Unfortunately, I have to use an old version of Geotools, as my client is reliant on software that is build in java 8 and cannot upgrade. I think the latest version of Geotools that was working with java 8 is 20.5.
>
> Now I have the following problem and have not been able to find a solution in the last week, searching various forums and this mailing list.
>
> I have a WKT (or Geometry or SimpleFeature) and need to convert it to GML (to submit into a WFS insert transaction).
>
> I have tried using the encoder in different ways:
>
> Feeding it either a SimpleFeature, Geometry derived from SimpleFeature or Geometry derived from WKT.
> Using GML._Geometry,  GML.MultiPolygon or various other QNames to encode the feature/geometry.
>
> I get depending on the above, a variety of errors:
>
> If I try to encode a Geometry I usually get the error that gid property is missing:
>
> Exception in thread "main" java.lang.RuntimeException: Failed to get property: gid
>
>       at org.geotools.xml.impl.GetPropertyExecutor.visit(GetPropertyExecutor.java:105)
>
>       at org.geotools.xml.impl.BindingWalker$BindingExecutionChain.execute(BindingWalker.java:220)
>
>       at org.geotools.xml.impl.BindingWalker.walk(BindingWalker.java:186)
>
>       at org.geotools.xml.impl.BindingVisitorDispatch.walk(BindingVisitorDispatch.java:47)
>
>       at org.geotools.xml.impl.BindingVisitorDispatch.walk(BindingVisitorDispatch.java:32)
>
>       at org.geotools.xml.Encoder.encode(Encoder.java:883)
>
>       at org.geotools.xml.Encoder.encode(Encoder.java:584)
>
>       at org.geotools.tutorial.App.main(App.java)
>
> Caused by: java.lang.ClassCastException: org.locationtech.jts.geom.MultiPolygon incompatible with com.vividsolutions.jts.geom.Geometry
>
>       at org.geotools.gml3.bindings.AbstractGeometryTypeBinding.getProperty(AbstractGeometryTypeBinding.java:129)
>
>       at org.geotools.xml.impl.GetPropertyExecutor.visit(GetPropertyExecutor.java:103)
>
>       ... 7 more
>
>
>
> Code:
>
> String woPolygonWKT = "MULTIPOLYGON (((4 0, 2 2, 4 4, 6 2, 4 0)), ((2 1, 1.9807852804032304 0.8049096779838718, 1.9238795325112867 0.6173165676349102, 1.8314696123025453 0.4444297669803978, 1.7071067811865475 0.2928932188134525, 1.5555702330196022 0.1685303876974548, 1.3826834323650898 0.0761204674887133, 1.1950903220161284 0.0192147195967696, 1 0, 0.8049096779838718 0.0192147195967696, 0.6173165676349103 0.0761204674887133, 0.444429766980398 0.1685303876974547, 0.2928932188134525 0.2928932188134524, 0.1685303876974547 0.4444297669803978, 0.0761204674887132 0.6173165676349106, 0.0192147195967695 0.8049096779838723, 0 1.0000000000000007, 0.0192147195967698 1.1950903220161293, 0.0761204674887137 1.382683432365091, 0.1685303876974555 1.5555702330196035, 0.2928932188134536 1.7071067811865488, 0.4444297669803993 1.8314696123025462, 0.6173165676349122 1.9238795325112874, 0.8049096779838739 1.9807852804032309, 1.0000000000000024 2, 1.1950903220161309 1.98078528040323, 1.3826834323650925 1.9238795325112856, 1.5555702330196048 1.8314696123025436, 1.70710678118655 1.7071067811865452, 1.8314696123025471 1.5555702330195993, 1.9238795325112883 1.3826834323650863, 1.9807852804032313 1.1950903220161244, 2 1)))";
>
>             WKTReader wktR = new WKTReader();
>
>           Geometry geom2;
>
>             try {
>
>                   geom2 = wktR.read(woPolygonWKT);
>
>                   System.out.println(geom2.toString());
>
>                   //geom2.setSRID(4326);
>
>                   org.geotools.xml.Configuration configuration = new org.geotools.gml3.GMLConfiguration();
>
>                 org.geotools.xml.Encoder encoder = new org.geotools.xml.Encoder( configuration );
>
>                 ByteArrayOutputStream out = new ByteArrayOutputStream();
>
>
>
>                 try {
>
>                   System.out.println("trying to encode");
>
>                         encoder.encode(geom2, org.geotools.gml3.GML.MultiPolygon,out);
>
>                   } catch (IOException e) {
>
>                         // TODO Auto-generated catch block
>
>                         e.printStackTrace();
>
>                   }
>
>                   System.out.println(out.toString());
>
>             } catch (ParseException e1) {
>
>                   // TODO Auto-generated catch block
>
>                   e1.printStackTrace();
>
>             }
>
>
>
> I have also tried:
>       public String convertSimpleFeatureToGML(SimpleFeature simpleFeature) {
>
>           GMLConfiguration gmlConfiguration = new GMLConfiguration(true);
>
>             Geometry geom = (Geometry) simpleFeature.getDefaultGeometry();
>
>
>
>           Encoder encoder = new Encoder(gmlConfiguration);
>
>           ByteArrayOutputStream boas = new ByteArrayOutputStream();
>
>           try {
>
>               encoder.encode(geom, GML.MultiPolygon, boas);
>
>               return boas.toString();
>
>           } catch (IOException e) {
>
>               e.printStackTrace();
>
>               return "";
>
>           }
>
>
>
>       }
>
> And then calling this function with a simpleFeature that contains the multipolygon described above in the WKT.
>
>
>
> If anyone can help me, it would be greatly appreciated.
>
>
>
> Kind Regards / Met vriendelijke groet,
>
> Asset People B.V.
>
>
>
> Mieke Zwart
>
>
>
> M. +31 (0) 612 967 788
>
> E. mie...@as...
>
>
>
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users

Re: [Geotools-gt2-users] Geometry or WKT or SimpleFeature encode to GML in GeoTools 20.5

[Ian T. <ijt...@gm...>]

The message `org.locationtech.jts.geom.MultiPolygon incompatible with
com.vividsolutions.jts.geom.Geometry` - suggests that you have two
incompatible versions of JTS in your build.

Ian

On Tue, 2 May 2023 at 17:39, Mieke Zwart <mie...@as...>
wrote:

> Hello list,
>
>
>
> Unfortunately, I have to use an old version of Geotools, as my client is
> reliant on software that is build in java 8 and cannot upgrade. I think the
> latest version of Geotools that was working with java 8 is 20.5.
>
> Now I have the following problem and have not been able to find a solution
> in the last week, searching various forums and this mailing list.
>
> I have a WKT (or Geometry or SimpleFeature) and need to convert it to GML
> (to submit into a WFS insert transaction).
>
> I have tried using the encoder in different ways:
>
>    - Feeding it either a SimpleFeature, Geometry derived from
>    SimpleFeature or Geometry derived from WKT.
>    - Using GML._Geometry,  GML.MultiPolygon or various other QNames to
>    encode the feature/geometry.
>
> I get depending on the above, a variety of errors:
>
> If I try to encode a Geometry I usually get the error that gid property is
> missing:
>
> Exception in thread "main" *java.lang.RuntimeException*: Failed to get
> property: gid
>
>       at org.geotools.xml.impl.GetPropertyExecutor.visit(
> *GetPropertyExecutor.java:105*)
>
>       at org.geotools.xml.impl.BindingWalker$BindingExecutionChain.execute(
> *BindingWalker.java:220*)
>
>       at org.geotools.xml.impl.BindingWalker.walk(*BindingWalker.java:186*
> )
>
>       at org.geotools.xml.impl.BindingVisitorDispatch.walk(
> *BindingVisitorDispatch.java:47*)
>
>       at org.geotools.xml.impl.BindingVisitorDispatch.walk(
> *BindingVisitorDispatch.java:32*)
>
>       at org.geotools.xml.Encoder.encode(*Encoder.java:883*)
>
>       at org.geotools.xml.Encoder.encode(*Encoder.java:584*)
>
>       at org.geotools.tutorial.App.main(App.java)
>
> Caused by: *java.lang.ClassCastException*:
> org.locationtech.jts.geom.MultiPolygon incompatible with
> com.vividsolutions.jts.geom.Geometry
>
>       at
> org.geotools.gml3.bindings.AbstractGeometryTypeBinding.getProperty(
> *AbstractGeometryTypeBinding.java:129*)
>
>       at org.geotools.xml.impl.GetPropertyExecutor.visit(
> *GetPropertyExecutor.java:103*)
>
>       ... 7 more
>
>
>
> Code:
>
> String woPolygonWKT = "MULTIPOLYGON (((4 0, 2 2, 4 4, 6 2, 4 0)), ((2 1,
> 1.9807852804032304 0.8049096779838718, 1.9238795325112867
> 0.6173165676349102, 1.8314696123025453 0.4444297669803978,
> 1.7071067811865475 0.2928932188134525, 1.5555702330196022
> 0.1685303876974548, 1.3826834323650898 0.0761204674887133,
> 1.1950903220161284 0.0192147195967696, 1 0, 0.8049096779838718
> 0.0192147195967696, 0.6173165676349103 0.0761204674887133,
> 0.444429766980398 0.1685303876974547, 0.2928932188134525
> 0.2928932188134524, 0.1685303876974547 0.4444297669803978,
> 0.0761204674887132 0.6173165676349106, 0.0192147195967695
> 0.8049096779838723, 0 1.0000000000000007, 0.0192147195967698
> 1.1950903220161293, 0.0761204674887137 1.382683432365091,
> 0.1685303876974555 1.5555702330196035, 0.2928932188134536
> 1.7071067811865488, 0.4444297669803993 1.8314696123025462,
> 0.6173165676349122 1.9238795325112874, 0.8049096779838739
> 1.9807852804032309, 1.0000000000000024 2, 1.1950903220161309
> 1.98078528040323, 1.3826834323650925 1.9238795325112856, 1.5555702330196048
> 1.8314696123025436, 1.70710678118655 1.7071067811865452, 1.8314696123025471
> 1.5555702330195993, 1.9238795325112883 1.3826834323650863,
> 1.9807852804032313 1.1950903220161244, 2 1)))";
>
>             WKTReader wktR = *new* WKTReader();
>
>           Geometry geom2;
>
>             *try* {
>
>                   geom2 = wktR.read(woPolygonWKT);
>
>                   System.*out*.println(geom2.toString());
>
>                   //geom2.setSRID(4326);
>
>                   org.geotools.xml.Configuration configuration = *new*
> org.geotools.gml3.GMLConfiguration();
>
>                 org.geotools.xml.Encoder encoder = *new*
> org.geotools.xml.Encoder( configuration );
>
>                 ByteArrayOutputStream out = *new* ByteArrayOutputStream();
>
>
>
>                 *try* {
>
>                   System.*out*.println("trying to encode");
>
>                         encoder.encode(geom2, org.geotools.gml3.GML.
> *MultiPolygon*,out);
>
>                   } *catch* (IOException e) {
>
>                         // *TODO* Auto-generated catch block
>
>                         e.printStackTrace();
>
>                   }
>
>                   System.*out*.println(out.toString());
>
>             } *catch* (ParseException e1) {
>
>                   // *TODO* Auto-generated catch block
>
>                   e1.printStackTrace();
>
>             }
>
>
>
> I have also tried:
>       *public* String convertSimpleFeatureToGML(SimpleFeature
> simpleFeature) {
>
>           GMLConfiguration gmlConfiguration = *new* GMLConfiguration(
> *true*);
>
>             Geometry geom = (Geometry) simpleFeature.getDefaultGeometry();
>
>
>
>           Encoder encoder = *new* Encoder(gmlConfiguration);
>
>           ByteArrayOutputStream boas = *new* ByteArrayOutputStream();
>
>           *try* {
>
>               encoder.encode(geom, GML.*MultiPolygon*, boas);
>
>               *return* boas.toString();
>
>           } *catch* (IOException e) {
>
>               e.printStackTrace();
>
>               *return* "";
>
>           }
>
>
>
>       }
>
> And then calling this function with a simpleFeature that contains the
> multipolygon described above in the WKT.
>
>
>
> If anyone can help me, it would be greatly appreciated.
>
>
>
> Kind Regards / Met vriendelijke groet,
>
> *Asset People B.V.*
>
>
>
> *Mieke Zwart*
>
>
>
> M. +31 (0) 612 967 788
>
> E. mie...@as...
>
>
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>


-- 
Ian Turton

[Geotools-gt2-users] Geometry or WKT or SimpleFeature encode to GML in GeoTools 20.5

[Mieke Z. <mie...@as...>]

Hello list,

Unfortunately, I have to use an old version of Geotools, as my client is reliant on software that is build in java 8 and cannot upgrade. I think the latest version of Geotools that was working with java 8 is 20.5.
Now I have the following problem and have not been able to find a solution in the last week, searching various forums and this mailing list.
I have a WKT (or Geometry or SimpleFeature) and need to convert it to GML (to submit into a WFS insert transaction).
I have tried using the encoder in different ways:

  *   Feeding it either a SimpleFeature, Geometry derived from SimpleFeature or Geometry derived from WKT.
  *   Using GML._Geometry,  GML.MultiPolygon or various other QNames to encode the feature/geometry.
I get depending on the above, a variety of errors:
If I try to encode a Geometry I usually get the error that gid property is missing:
Exception in thread "main" java.lang.RuntimeException: Failed to get property: gid
      at org.geotools.xml.impl.GetPropertyExecutor.visit(GetPropertyExecutor.java:105)
      at org.geotools.xml.impl.BindingWalker$BindingExecutionChain.execute(BindingWalker.java:220)
      at org.geotools.xml.impl.BindingWalker.walk(BindingWalker.java:186)
      at org.geotools.xml.impl.BindingVisitorDispatch.walk(BindingVisitorDispatch.java:47)
      at org.geotools.xml.impl.BindingVisitorDispatch.walk(BindingVisitorDispatch.java:32)
      at org.geotools.xml.Encoder.encode(Encoder.java:883)
      at org.geotools.xml.Encoder.encode(Encoder.java:584)
      at org.geotools.tutorial.App.main(App.java)
Caused by: java.lang.ClassCastException: org.locationtech.jts.geom.MultiPolygon incompatible with com.vividsolutions.jts.geom.Geometry
      at org.geotools.gml3.bindings.AbstractGeometryTypeBinding.getProperty(AbstractGeometryTypeBinding.java:129)
      at org.geotools.xml.impl.GetPropertyExecutor.visit(GetPropertyExecutor.java:103)
      ... 7 more

Code:
String woPolygonWKT = "MULTIPOLYGON (((4 0, 2 2, 4 4, 6 2, 4 0)), ((2 1, 1.9807852804032304 0.8049096779838718, 1.9238795325112867 0.6173165676349102, 1.8314696123025453 0.4444297669803978, 1.7071067811865475 0.2928932188134525, 1.5555702330196022 0.1685303876974548, 1.3826834323650898 0.0761204674887133, 1.1950903220161284 0.0192147195967696, 1 0, 0.8049096779838718 0.0192147195967696, 0.6173165676349103 0.0761204674887133, 0.444429766980398 0.1685303876974547, 0.2928932188134525 0.2928932188134524, 0.1685303876974547 0.4444297669803978, 0.0761204674887132 0.6173165676349106, 0.0192147195967695 0.8049096779838723, 0 1.0000000000000007, 0.0192147195967698 1.1950903220161293, 0.0761204674887137 1.382683432365091, 0.1685303876974555 1.5555702330196035, 0.2928932188134536 1.7071067811865488, 0.4444297669803993 1.8314696123025462, 0.6173165676349122 1.9238795325112874, 0.8049096779838739 1.9807852804032309, 1.0000000000000024 2, 1.1950903220161309 1.98078528040323, 1.3826834323650925 1.9238795325112856, 1.5555702330196048 1.8314696123025436, 1.70710678118655 1.7071067811865452, 1.8314696123025471 1.5555702330195993, 1.9238795325112883 1.3826834323650863, 1.9807852804032313 1.1950903220161244, 2 1)))";
            WKTReader wktR = new WKTReader();
          Geometry geom2;
            try {
                  geom2 = wktR.read(woPolygonWKT);
                  System.out.println(geom2.toString());
                  //geom2.setSRID(4326);
                  org.geotools.xml.Configuration configuration = new org.geotools.gml3.GMLConfiguration();
                org.geotools.xml.Encoder encoder = new org.geotools.xml.Encoder( configuration );
                ByteArrayOutputStream out = new ByteArrayOutputStream();

                try {
                  System.out.println("trying to encode");
                        encoder.encode(geom2, org.geotools.gml3.GML.MultiPolygon,out);
                  } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                  }
                  System.out.println(out.toString());
            } catch (ParseException e1) {
                  // TODO Auto-generated catch block
                  e1.printStackTrace();
            }

I have also tried:
      public String convertSimpleFeatureToGML(SimpleFeature simpleFeature) {
          GMLConfiguration gmlConfiguration = new GMLConfiguration(true);
            Geometry geom = (Geometry) simpleFeature.getDefaultGeometry();

          Encoder encoder = new Encoder(gmlConfiguration);
          ByteArrayOutputStream boas = new ByteArrayOutputStream();
          try {
              encoder.encode(geom, GML.MultiPolygon, boas);
              return boas.toString();
          } catch (IOException e) {
              e.printStackTrace();
              return "";
          }

      }
And then calling this function with a simpleFeature that contains the multipolygon described above in the WKT.

If anyone can help me, it would be greatly appreciated.

Kind Regards / Met vriendelijke groet,
Asset People B.V.

Mieke Zwart

M. +31 (0) 612 967 788
E. mie...@as...<mailto:mie...@as...>

Re: [Geotools-gt2-users] Memory Leak in Streaming Parser

[Kalesse S. <Soe...@dw...>]

Hello,

I think this reported problem could be related tot he ticket https://osgeo-org.atlassian.net/browse/GEOT-6517.

Best Regards
Sören


-----Ursprüngliche Nachricht-----
Von: Jody Garnett <jod...@gm...> 
Gesendet: Freitag, 21. April 2023 20:58
An: ger...@gm...
Cc: geo...@li...; geo...@li...
Betreff: Re: [Geotools-gt2-users] Memory Leak in Streaming Parser

The EMF / XSD parsing stuff does have some caches; but no I am not aware why this is happening for you.
Can you use your IDE profiler or heap management tools to determine what objects are leaking?


You should be able to call parse multiple times if you are reading from the same input stream...
--
Jody Garnett


On Fri, Apr 21, 2023 at 4:47 AM ger...@gm... <mailto:ger...@gm...>  <ger...@gm... <mailto:ger...@gm...> > wrote:


			Hello togehter,
			
			my usecase is using method StreamingParser.parse()  in a loop in my java application (ca. 5000 iterations). Unfortunately this leads to a huge memory leak. Also this memory can never be released by the garbage collector. It stays in the old gen heap forever.
			
			I use
			
			https://github.com/geotools/geotools/blob/main/modules/extension/xsd/xsd-core/src/main/java/org/geotools/xsd/StreamingParser.java <https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVg8NzM3PCBwOzQoNiBvYjs2Nzw2NyB1b2FoZ3JzdGM7PmdjPzIwMWQ1ZDVlNzFjYzdlYzVlMWU0NT4yMDI2MWI+ZT42PmdiPyByOzcwPjQ3NjUwNzcgd29iOzU1Skw2RFdHNjcxMTM1KzU1Skw2RFdENjcxMTM1IHRldnI7VWljdGNoKE1namN1dWNGYnFiKGJjIGU7MzQgbmJqOzY=&url=https%3a%2f%2fgithub.com%2fgeotools%2fgeotools%2fblob%2fmain%2fmodules%2fextension%2fxsd%2fxsd-core%2fsrc%2fmain%2fjava%2forg%2fgeotools%2fxsd%2fStreamingParser.java> 
			
			
			in this way:
			
			

			for(.....) {
			    try {
			            org.geotools.xsd.StreamingParser parser  = new org.geotools.xsd.StreamingParser(gml, inputStream, Polygon.class);
			            polygon = (Polygon) parser.parse();
			    } finally {
			            inputStream.close();
			    }
			}

			
			
			Do you have any idea why that happens? Are you even able to fix it?

			
			I use the following maven dependency:
			
			

			<dependency>
			    <groupId>org.geotools.xsd</groupId>
			    <artifactId>gt-xsd-wfs</artifactId>
			    <version>27.2</version>
			</dependency>

			
			

			
			Best regards,
			
			Gero
			
			

	_______________________________________________
	GeoTools-GT2-Users mailing list
	Geo...@li... <mailto:Geo...@li...> 
	https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users <https://ofcsg2dvf1.dwd.de/fmlurlsvc/?fewReq=:B:JVg8NzM3PCBwOzQoNiBvYjs2Nzw2NyB1b2FoZ3JzdGM7ZTYyPmBgMzUzNDFgNGdkPmVnPzZlNjM3MWUyNWQ/PjQ0MGQwZzY2YiByOzcwPjQ3NjUwNzcgd29iOzU1Skw2RFdHNjcxMTM1KzU1Skw2RFdENjcxMTM1IHRldnI7VWljdGNoKE1namN1dWNGYnFiKGJjIGU7MzQgbmJqOzY=&url=https%3a%2f%2flists.sourceforge.net%2flists%2flistinfo%2fgeotools-gt2-users> 
	

Re: [Geotools-gt2-users] Use with GraalVM (native-image)

[Dennis G. <de...@ge...>]

Hi Jody:

Will try to create a reproducer if I can isolate. Might actually be a build
tool issue as I just realized I do have a standalone project using similar
imports and this same framework that does package to native just fine. In
this current effort there are a lot of maven sub-modules so that might be
where I'm hitting an issue.

Dennis

On Thu, Apr 20, 2023 at 7:09 PM Jody Garnett <jod...@gm...> wrote:

> The classes you reference are from the java units module.  Have a look if
> that has changed for Java 17?
>
> On Thu, Apr 20, 2023 at 3:17 PM Dennis Gesker <de...@ge...> wrote:
>
>> Hello:
>>
>> I was attempting to port a few routines to Quarkus. When attempting to
>> create a native package a number of errors are reported;
>> BytecodeParserError, UnresolvedElementExcpetion, etc.
>>
>> These errors seem to be related to the packages
>>
>> tech.units.indriya.format, org.geotools.measure, org.geotools.util, org.geotools.referencing.wkt
>>
>> My maven dependencies are:
>>
>>  <dependency>
>> <groupId>org.geotools</groupId>
>> <artifactId>gt-main</artifactId>
>> <version>29.0</version>
>> </dependency>
>> <dependency>
>> <groupId>org.geotools</groupId>
>> <artifactId>gt-opengis</artifactId>
>> <version>29.0</version>
>> </dependency>
>>
>> I'm using the
>> quay.io/quarkus/ubi-quarkus-mandrel-builder-image:22.3-java17 provided
>> by the Quarkus project but also get the same errors using my local GraalVM
>> installation.
>>
>> I've tried setting the classes reported to initialize at run time but
>> this didn't work.
>>
>> Can geotools be used in Graalvm native-image applications? I didn't see
>> anything in the FAQ.
>>
>> Thanks,
>> Dennis
>> _______________________________________________
>> GeoTools-GT2-Users mailing list
>> Geo...@li...
>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>>
> --
> --
> Jody Garnett
>

Re: [Geotools-gt2-users] Memory Leak in Streaming Parser

[Jody G. <jod...@gm...>]

The EMF / XSD parsing stuff does have some caches; but no I am not aware
why this is happening for you.
Can you use your IDE profiler or heap management tools to determine what
objects are leaking?

You should be able to call parse multiple times if you are reading from the
same input stream...
--
Jody Garnett


On Fri, Apr 21, 2023 at 4:47 AM ger...@gm... <ger...@gm...>
wrote:

> Hello togehter,
>
> my usecase is using method StreamingParser.parse()  in a loop in my java
> application (ca. 5000 iterations). Unfortunately this leads to a huge
> memory leak. Also this memory can never be released by the garbage
> collector. It stays in the old gen heap forever.
>
> I use
>
>
> https://github.com/geotools/geotools/blob/main/modules/extension/xsd/xsd-core/src/main/java/org/geotools/xsd/StreamingParser.java
>
>
> in this way:
>
> for(.....) {
>
>     try {
>
>             org.geotools.xsd.StreamingParser parser  = new org.geotools.xsd.StreamingParser(gml, inputStream, Polygon.class);
>
>             polygon = (Polygon) parser.parse();
>
>     } finally {
>
>             inputStream.close();
>
>     }
>
> }
>
>
>
> Do you have any idea why that happens? Are you even able to fix it?
>
>
> I use the following maven dependency:
>
> <dependency>
>
>     <groupId>org.geotools.xsd</groupId>
>
>     <artifactId>gt-xsd-wfs</artifactId>
>
>     <version>27.2</version>
>
> </dependency>
>
>
>
> Best regards,
>
> Gero
>
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>

Re: [Geotools-gt2-users] Memory Leak in Streaming Parser

[Matthijs L. <mat...@b3...>]

If you're just looking to parse a GML geometry and not a complete 
"application schema", try using the very simple streaming parser:

https://docs.geotools.org/stable/userguide/unsupported/gml-geometry-streaming.html

It is a lot faster than the XSD based parser, especially if you use the 
Aalto or Woodstox XML parser.

Matthijs

On 21/04/2023 13.46, ger...@gm... wrote:
>>>
>>> Hello togehter,
>>>
>>> my usecase is using method StreamingParser.parse()  in a loop in my 
>>> java application (ca. 5000 iterations). Unfortunately this leads to 
>>> a huge memory leak. Also this memory can never be released by the 
>>> garbage collector. It stays in the old gen heap forever.
>>>
>>> I use
>>>
>>> https://github.com/geotools/geotools/blob/main/modules/extension/xsd/xsd-core/src/main/java/org/geotools/xsd/StreamingParser.java
>>>
>>>
>>> in this way:
>>>
>>> for(.....) {
>>>      try {
>>>              org.geotools.xsd.StreamingParser parser  = new org.geotools.xsd.StreamingParser(gml, inputStream, Polygon.class);
>>>              polygon = (Polygon) parser.parse();
>>>      } finally {
>>>              inputStream.close();
>>>      }
>>> }
>>>
>>>
>>>
>>> Do you have any idea why that happens? Are you even able to fix it?
>>>
>>>
>>> I use the following maven dependency:
>>>
>>> <dependency>
>>>      <groupId>org.geotools.xsd</groupId>
>>>      <artifactId>gt-xsd-wfs</artifactId>
>>>      <version>27.2</version>
>>> </dependency>
>>>
>>>
>>>
>>> Best regards,
>>>
>>> Gero
>>>
>
>
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users

[Geotools-gt2-users] Memory Leak in Streaming Parser

[<ger...@gm...>]

>> Hello togehter,
>>
>> my usecase is using method StreamingParser.parse()  in a loop in my
>> java application (ca. 5000 iterations). Unfortunately this leads to a
>> huge memory leak. Also this memory can never be released by the
>> garbage collector. It stays in the old gen heap forever.
>>
>> I use
>>
>> https://github.com/geotools/geotools/blob/main/modules/extension/xsd/xsd-core/src/main/java/org/geotools/xsd/StreamingParser.java
>>
>>
>> in this way:
>>
>> for(.....) {
>>      try {
>>              org.geotools.xsd.StreamingParser parser  = new org.geotools.xsd.StreamingParser(gml, inputStream, Polygon.class);
>>              polygon = (Polygon) parser.parse();
>>      } finally {
>>              inputStream.close();
>>      }
>> }
>>
>>
>>
>> Do you have any idea why that happens? Are you even able to fix it?
>>
>>
>> I use the following maven dependency:
>>
>> <dependency>
>>      <groupId>org.geotools.xsd</groupId>
>>      <artifactId>gt-xsd-wfs</artifactId>
>>      <version>27.2</version>
>> </dependency>
>>
>>
>>
>> Best regards,
>>
>> Gero
>>

Re: [Geotools-gt2-users] Use with GraalVM (native-image)

[Jody G. <jod...@gm...>]

The classes you reference are from the java units module.  Have a look if
that has changed for Java 17?

On Thu, Apr 20, 2023 at 3:17 PM Dennis Gesker <de...@ge...> wrote:

> Hello:
>
> I was attempting to port a few routines to Quarkus. When attempting to
> create a native package a number of errors are reported;
> BytecodeParserError, UnresolvedElementExcpetion, etc.
>
> These errors seem to be related to the packages
>
> tech.units.indriya.format, org.geotools.measure, org.geotools.util, org.geotools.referencing.wkt
>
> My maven dependencies are:
>
>  <dependency>
> <groupId>org.geotools</groupId>
> <artifactId>gt-main</artifactId>
> <version>29.0</version>
> </dependency>
> <dependency>
> <groupId>org.geotools</groupId>
> <artifactId>gt-opengis</artifactId>
> <version>29.0</version>
> </dependency>
>
> I'm using the
> quay.io/quarkus/ubi-quarkus-mandrel-builder-image:22.3-java17 provided by
> the Quarkus project but also get the same errors using my local GraalVM
> installation.
>
> I've tried setting the classes reported to initialize at run time but this
> didn't work.
>
> Can geotools be used in Graalvm native-image applications? I didn't see
> anything in the FAQ.
>
> Thanks,
> Dennis
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>
-- 
--
Jody Garnett

[Geotools-gt2-users] Use with GraalVM (native-image)

[Dennis G. <de...@ge...>]

Hello:

I was attempting to port a few routines to Quarkus. When attempting to
create a native package a number of errors are reported;
BytecodeParserError, UnresolvedElementExcpetion, etc.

These errors seem to be related to the packages
tech.units.indriya.format, org.geotools.measure, org.geotools.util,
org.geotools.referencing.wkt

My maven dependencies are:

 <dependency>
<groupId>org.geotools</groupId>
<artifactId>gt-main</artifactId>
<version>29.0</version>
</dependency>
<dependency>
<groupId>org.geotools</groupId>
<artifactId>gt-opengis</artifactId>
<version>29.0</version>
</dependency>

I'm using the quay.io/quarkus/ubi-quarkus-mandrel-builder-image:22.3-java17
provided by the Quarkus project but also get the same errors using my local
GraalVM installation.

I've tried setting the classes reported to initialize at run time but this
didn't work.

Can geotools be used in Graalvm native-image applications? I didn't see
anything in the FAQ.

Thanks,
Dennis

[Geotools-gt2-users] How can I convert a geotiff file to another resolution

[George Ma <cha...@gm...>]

Hello everyone.

I want to use Geotools to convert a geotiff  file to another resolution.

I find API document from geotools.org website like this:

https://docs.geotools.org/stable/javadocs/org/geotools/coverage/processing/operation/Resample.html

   - *Resampling*
   The grid coverage can be resampled at a different cell resolution. Some
   implementations may be able to do resampling efficiently at any resolution.
   Also a non-rectilinear grid coverage can be accessed as rectilinear grid
   coverage with this operation.

I can use the "resample" operation to reprojection like this:

public static GridCoverage2D resample(
            final GridCoverage2D coverage,
            final CoordinateReferenceSystem sourceCRS,
            final CoordinateReferenceSystem targetCRS,
            final GridGeometry2D gridGeometry,
            final Interpolation interpolation)
            throws WcsException {

        final ParameterValueGroup param =
                (ParameterValueGroup) PROCESSOR.getOperation("Resample").
getParameters();
        param.parameter("Source").setValue(coverage);
        param.parameter("CoordinateReferenceSystem").setValue(targetCRS);
        param.parameter("GridGeometry").setValue(gridGeometry);
        param.parameter("InterpolationType").setValue(interpolation);

        return (GridCoverage2D)
                ((Resample)
PROCESSOR.getOperation("Resample")).doOperation(param,
hints);
    }

How can I use "resample" operation to convert to another resolution?How to
set the related parameter.

Appreciate any clues.

Best regards.

Thank you very much.

Re: [Geotools-gt2-users] In need of some help using Geotools 28.2 to encode GML 3.2 ?

[Bart A. <bar...@gm...>]

Hi Jody,

Thank you very much for trying to help me, and forgive me for not reporting
back yet that i have found a working solution;

In the gt-xsd-wfs module there is a unit test,
"WFSFeatureCollectionEncodingTest" which provides a working example that
fixed my problem, the one thing i missed is that apparently to do this with
the org.geotools.xsd.Encoder class i need to wrap my FeatureCollection in a
FeatureCollectionType wrapper.

Now i had looked at the unit test several times already but assumed at
first glance that this was encoding a DescribeFeatureType output because of
the class name "FeatureCollectionType" of the main object it starts with.
But when i run it i could see what was going on, the
"FeatureCollectionType" class name is a bit confusing here.

The working code i have now, which works well:

        var featureCollectionType =
WfsFactory.eINSTANCE.createFeatureCollectionType();
        featureCollectionType.getFeature().add(featureCollection);

        var configuration = new WFSConfiguration();

        var encoder = new Encoder(configuration);
        encoder.getNamespaces().declarePrefix("myprefix", "http://myuri");

        try (var output =
FastBufferedOutputStream.create(response.getOutputStream())) {
            encoder.encode(featureCollectionType, WFS.FeatureCollection,
output);
        }


If you can find a working unit test with the GML class doing GML 3.2
encoding i would like to see it, i could not find it.

I totally agree with your statement about OpenGIS consortium making things
too complicated, i guess there are too many parties involved that all want
to have their say in these standards, my experience is that usually the 1.0
standards are better than the 2.0 version etc. that follow. Unfortunately,
ArcGIS will not accept GeoJSON from a WFS implementation, at least i was
told so by ESRI.

Now that it works, all is well that ends well, adding the JSON output
literally took me 5 minutes using Geotools !

Best Regards,

Bart Adriaanse
Software developer at Deltares.nl

On Wed, 12 Apr 2023 at 18:01, Jody Garnett <jod...@gm...> wrote:

> Bart:
>
> One thing I could not see in your example is your schema?  GML 3.2 is not
> a document format - it is a choose your own adventure that you can use to
> define your own document structure (for your simple features) as a schema
> document.
>
> The GeoTools docs try to explain this and include examples for encoding
> your simple feature type as an XSD document; and then using that XSD
> document to configure a GMLConfiguration allowing your simple feature
> collection to be written out to a document.
> For WFS the XSD document comes from the DescribeFeatureType operation.
>
> I am afraid OGC makes things terribly complicated which is why a lot of
> folks use GeoJSON when communicating with a WFS....
> Personally I think GML is a better format for archival or interchange
> purposes where data integrity needs to be maintained and understood across
> systems.
>
> In the example you provided the root element of the document was used as
> WFS.FeatureCollection, and depends on "SampleFeature" being setup to extend
> abstract feature. The WFS.FeatureCollection members are part of the
> substitution group "AbstractFeature".
>
> The https://docs.geotools.org/stable/userguide/library/xml/geometry.html
> snippet for writing out XSD was:
>
> SimpleFeatureType TYPE = DataUtilities.createType("location",
> "geom:Point,name:String");
>
> GML encode = new GML(Version.GML3);
> encode.setBaseURL(new URL("http://localhost/"));
> encode.setNamespace("location", "http://localhost/location.xsd");
> encode.encode(outputStream, TYPE);
>
> You can check your schema document when you have generated it to ensure
> "SampleFeature" is setup in this manner so that the result can be encoded
> as a WFS FeatureCollection.
>
>
> --
> Jody Garnett
>
>
> On Mon, Apr 3, 2023 at 4:11 AM Bart Adriaanse <bar...@gm...>
> wrote:
>
>> Hi there,
>>
>> I have been struggling with this for some time, even after investigating
>> the source code of both Geotools and GeoServer i cannot seem to get this to
>> work.
>>
>> I have a extremely simple WFS 1.0 interface in an application and need to
>> update this to WFS 2.0 but i am stuck at encoding a SimpleFeatureCollection
>> to GML 3.2
>>
>> I would be very grateful if someone who is very familiar with Geotools
>> can find some time to see what is wrong with my code, here is a copy of the
>> Junit test i am trying to get to work:
>>
>> import org.geotools.data.DataUtilities;
>> import org.geotools.data.collection.ListFeatureCollection;
>> import org.geotools.data.simple.SimpleFeatureCollection;
>> import org.geotools.feature.simple.SimpleFeatureBuilder;
>> import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
>> import org.geotools.gml3.v3_2.GML;
>> import org.geotools.gml3.v3_2.GMLConfiguration;
>> import org.geotools.wfs.WFS;
>> import org.geotools.xsd.Encoder;
>> import org.junit.Assert;
>> import org.junit.Test;
>> import org.locationtech.jts.geom.Coordinate;
>> import org.locationtech.jts.geom.GeometryFactory;
>> import org.locationtech.jts.geom.Point;
>> import org.opengis.feature.simple.SimpleFeature;
>> import org.opengis.feature.simple.SimpleFeatureType;
>>
>> import javax.xml.namespace.QName;
>> import java.io.ByteArrayOutputStream;
>> import java.io.IOException;
>> import java.nio.charset.StandardCharsets;
>>
>> public class EncodeGML3_2Example {
>>
>> @Test
>> public void encodeGML32() {
>> try {
>> // Create a SimpleFeatureType
>> SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
>> typeBuilder.setName("SampleFeature");
>> typeBuilder.add("geom", Point.class);
>> typeBuilder.add("name", String.class);
>> SimpleFeatureType featureType = typeBuilder.buildFeatureType();
>>
>> // Create and add features to SimpleFeatureCollection
>> ListFeatureCollection featureList = new ListFeatureCollection(featureType
>> );
>> SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(
>> featureType);
>> GeometryFactory geometryFactory = new GeometryFactory();
>> Point point1 = geometryFactory.createPoint(new Coordinate(10, 10));
>> featureBuilder.add(point1);
>> featureBuilder.add("Point 1");
>> SimpleFeature feature1 = featureBuilder.buildFeature("1");
>> Point point2 = geometryFactory.createPoint(new Coordinate(20, 20));
>> featureBuilder.add(point2);
>> featureBuilder.add("Point 2");
>> SimpleFeature feature2 = featureBuilder.buildFeature("2");
>> featureList.add(feature1);
>> featureList.add(feature2);
>> SimpleFeatureCollection featureCollection = DataUtilities.collection(
>> featureList);
>>
>> // Encode the SimpleFeatureCollection as GML 3.2
>> GMLConfiguration gmlConfig = new GMLConfiguration(true);
>> Encoder encoder = new Encoder(gmlConfig);
>> encoder.setSchemaLocation("http://www.opengis.net/gml", "
>> http://schemas.opengis.net/gml/3.2.1/gml.xsd");
>> encoder.setNamespaceAware(true);
>> encoder.setRootElementType(WFS.FeatureCollection);
>> String gml = encoder.encodeAsString(featureCollection, GML.
>> FeatureCollection);
>>
>> Assert.assertTrue(!gml.isEmpty());
>>
>> } catch (Exception e) {
>> e.printStackTrace();
>> }
>> }
>>
>> }
>> _______________________________________________
>> GeoTools-GT2-Users mailing list
>> Geo...@li...
>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>>
>

Re: [Geotools-gt2-users] In need of some help using Geotools 28.2 to encode GML 3.2 ?

[Jody G. <jod...@gm...>]

Bart:

One thing I could not see in your example is your schema?  GML 3.2 is not a
document format - it is a choose your own adventure that you can use to
define your own document structure (for your simple features) as a schema
document.

The GeoTools docs try to explain this and include examples for encoding
your simple feature type as an XSD document; and then using that XSD
document to configure a GMLConfiguration allowing your simple feature
collection to be written out to a document.
For WFS the XSD document comes from the DescribeFeatureType operation.

I am afraid OGC makes things terribly complicated which is why a lot of
folks use GeoJSON when communicating with a WFS....
Personally I think GML is a better format for archival or interchange
purposes where data integrity needs to be maintained and understood across
systems.

In the example you provided the root element of the document was used as
WFS.FeatureCollection, and depends on "SampleFeature" being setup to extend
abstract feature. The WFS.FeatureCollection members are part of the
substitution group "AbstractFeature".

The https://docs.geotools.org/stable/userguide/library/xml/geometry.html
snippet for writing out XSD was:

SimpleFeatureType TYPE = DataUtilities.createType("location",
"geom:Point,name:String");

GML encode = new GML(Version.GML3);
encode.setBaseURL(new URL("http://localhost/"));
encode.setNamespace("location", "http://localhost/location.xsd");
encode.encode(outputStream, TYPE);

You can check your schema document when you have generated it to ensure
"SampleFeature" is setup in this manner so that the result can be encoded
as a WFS FeatureCollection.


--
Jody Garnett


On Mon, Apr 3, 2023 at 4:11 AM Bart Adriaanse <bar...@gm...>
wrote:

> Hi there,
>
> I have been struggling with this for some time, even after investigating
> the source code of both Geotools and GeoServer i cannot seem to get this to
> work.
>
> I have a extremely simple WFS 1.0 interface in an application and need to
> update this to WFS 2.0 but i am stuck at encoding a SimpleFeatureCollection
> to GML 3.2
>
> I would be very grateful if someone who is very familiar with Geotools can
> find some time to see what is wrong with my code, here is a copy of the
> Junit test i am trying to get to work:
>
> import org.geotools.data.DataUtilities;
> import org.geotools.data.collection.ListFeatureCollection;
> import org.geotools.data.simple.SimpleFeatureCollection;
> import org.geotools.feature.simple.SimpleFeatureBuilder;
> import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
> import org.geotools.gml3.v3_2.GML;
> import org.geotools.gml3.v3_2.GMLConfiguration;
> import org.geotools.wfs.WFS;
> import org.geotools.xsd.Encoder;
> import org.junit.Assert;
> import org.junit.Test;
> import org.locationtech.jts.geom.Coordinate;
> import org.locationtech.jts.geom.GeometryFactory;
> import org.locationtech.jts.geom.Point;
> import org.opengis.feature.simple.SimpleFeature;
> import org.opengis.feature.simple.SimpleFeatureType;
>
> import javax.xml.namespace.QName;
> import java.io.ByteArrayOutputStream;
> import java.io.IOException;
> import java.nio.charset.StandardCharsets;
>
> public class EncodeGML3_2Example {
>
> @Test
> public void encodeGML32() {
> try {
> // Create a SimpleFeatureType
> SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
> typeBuilder.setName("SampleFeature");
> typeBuilder.add("geom", Point.class);
> typeBuilder.add("name", String.class);
> SimpleFeatureType featureType = typeBuilder.buildFeatureType();
>
> // Create and add features to SimpleFeatureCollection
> ListFeatureCollection featureList = new ListFeatureCollection(featureType
> );
> SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType
> );
> GeometryFactory geometryFactory = new GeometryFactory();
> Point point1 = geometryFactory.createPoint(new Coordinate(10, 10));
> featureBuilder.add(point1);
> featureBuilder.add("Point 1");
> SimpleFeature feature1 = featureBuilder.buildFeature("1");
> Point point2 = geometryFactory.createPoint(new Coordinate(20, 20));
> featureBuilder.add(point2);
> featureBuilder.add("Point 2");
> SimpleFeature feature2 = featureBuilder.buildFeature("2");
> featureList.add(feature1);
> featureList.add(feature2);
> SimpleFeatureCollection featureCollection = DataUtilities.collection(
> featureList);
>
> // Encode the SimpleFeatureCollection as GML 3.2
> GMLConfiguration gmlConfig = new GMLConfiguration(true);
> Encoder encoder = new Encoder(gmlConfig);
> encoder.setSchemaLocation("http://www.opengis.net/gml", "
> http://schemas.opengis.net/gml/3.2.1/gml.xsd");
> encoder.setNamespaceAware(true);
> encoder.setRootElementType(WFS.FeatureCollection);
> String gml = encoder.encodeAsString(featureCollection, GML.
> FeatureCollection);
>
> Assert.assertTrue(!gml.isEmpty());
>
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
>
> }
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>

Re: [Geotools-gt2-users] In need of some help using Geotools 28.2 to encode GML 3.2 ?

[Jody G. <jod...@gm...>]

Good morning Bart:

I have not had an opportunity to assist, some of the code you are trying
represents my attempt to get this working when it was initially written. I
find that the best approach is to look at a geotools test-case which does
what you want - and then step through with a debugger to see how the
objects were setup and to review the structure of the objects (in this case
a GMLConfiguration).

I searched using:
https://github.com/geotools/geotools/search?l=Java&q=3.2+gml+simplefeature+test

And found:
https://github.com/geotools/geotools/blob/main/modules/extension/xsd/xsd-gml3/src/test/java/org/geotools/gml3/GML3EncodingTest.java




--
Jody Garnett


On Mon, Apr 3, 2023 at 4:11 AM Bart Adriaanse <bar...@gm...>
wrote:

> Hi there,
>
> I have been struggling with this for some time, even after investigating
> the source code of both Geotools and GeoServer i cannot seem to get this to
> work.
>
> I have a extremely simple WFS 1.0 interface in an application and need to
> update this to WFS 2.0 but i am stuck at encoding a SimpleFeatureCollection
> to GML 3.2
>
> I would be very grateful if someone who is very familiar with Geotools can
> find some time to see what is wrong with my code, here is a copy of the
> Junit test i am trying to get to work:
>
> import org.geotools.data.DataUtilities;
> import org.geotools.data.collection.ListFeatureCollection;
> import org.geotools.data.simple.SimpleFeatureCollection;
> import org.geotools.feature.simple.SimpleFeatureBuilder;
> import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
> import org.geotools.gml3.v3_2.GML;
> import org.geotools.gml3.v3_2.GMLConfiguration;
> import org.geotools.wfs.WFS;
> import org.geotools.xsd.Encoder;
> import org.junit.Assert;
> import org.junit.Test;
> import org.locationtech.jts.geom.Coordinate;
> import org.locationtech.jts.geom.GeometryFactory;
> import org.locationtech.jts.geom.Point;
> import org.opengis.feature.simple.SimpleFeature;
> import org.opengis.feature.simple.SimpleFeatureType;
>
> import javax.xml.namespace.QName;
> import java.io.ByteArrayOutputStream;
> import java.io.IOException;
> import java.nio.charset.StandardCharsets;
>
> public class EncodeGML3_2Example {
>
> @Test
> public void encodeGML32() {
> try {
> // Create a SimpleFeatureType
> SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
> typeBuilder.setName("SampleFeature");
> typeBuilder.add("geom", Point.class);
> typeBuilder.add("name", String.class);
> SimpleFeatureType featureType = typeBuilder.buildFeatureType();
>
> // Create and add features to SimpleFeatureCollection
> ListFeatureCollection featureList = new ListFeatureCollection(featureType
> );
> SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType
> );
> GeometryFactory geometryFactory = new GeometryFactory();
> Point point1 = geometryFactory.createPoint(new Coordinate(10, 10));
> featureBuilder.add(point1);
> featureBuilder.add("Point 1");
> SimpleFeature feature1 = featureBuilder.buildFeature("1");
> Point point2 = geometryFactory.createPoint(new Coordinate(20, 20));
> featureBuilder.add(point2);
> featureBuilder.add("Point 2");
> SimpleFeature feature2 = featureBuilder.buildFeature("2");
> featureList.add(feature1);
> featureList.add(feature2);
> SimpleFeatureCollection featureCollection = DataUtilities.collection(
> featureList);
>
> // Encode the SimpleFeatureCollection as GML 3.2
> GMLConfiguration gmlConfig = new GMLConfiguration(true);
> Encoder encoder = new Encoder(gmlConfig);
> encoder.setSchemaLocation("http://www.opengis.net/gml", "
> http://schemas.opengis.net/gml/3.2.1/gml.xsd");
> encoder.setNamespaceAware(true);
> encoder.setRootElementType(WFS.FeatureCollection);
> String gml = encoder.encodeAsString(featureCollection, GML.
> FeatureCollection);
>
> Assert.assertTrue(!gml.isEmpty());
>
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
>
> }
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>

Re: [Geotools-gt2-users] In need of some help using Geotools 28.2 to encode GML 3.2 ?

[Bart A. <bar...@gm...>]

Sorry i forget to mention, the resulting string is not completely empty,
but it only contains an empty <gml:FeatureCollection> element

On Mon, 3 Apr 2023 at 13:10, Bart Adriaanse <bar...@gm...>
wrote:

> Hi there,
>
> I have been struggling with this for some time, even after investigating
> the source code of both Geotools and GeoServer i cannot seem to get this to
> work.
>
> I have a extremely simple WFS 1.0 interface in an application and need to
> update this to WFS 2.0 but i am stuck at encoding a SimpleFeatureCollection
> to GML 3.2
>
> I would be very grateful if someone who is very familiar with Geotools can
> find some time to see what is wrong with my code, here is a copy of the
> Junit test i am trying to get to work:
>
> import org.geotools.data.DataUtilities;
> import org.geotools.data.collection.ListFeatureCollection;
> import org.geotools.data.simple.SimpleFeatureCollection;
> import org.geotools.feature.simple.SimpleFeatureBuilder;
> import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
> import org.geotools.gml3.v3_2.GML;
> import org.geotools.gml3.v3_2.GMLConfiguration;
> import org.geotools.wfs.WFS;
> import org.geotools.xsd.Encoder;
> import org.junit.Assert;
> import org.junit.Test;
> import org.locationtech.jts.geom.Coordinate;
> import org.locationtech.jts.geom.GeometryFactory;
> import org.locationtech.jts.geom.Point;
> import org.opengis.feature.simple.SimpleFeature;
> import org.opengis.feature.simple.SimpleFeatureType;
>
> import javax.xml.namespace.QName;
> import java.io.ByteArrayOutputStream;
> import java.io.IOException;
> import java.nio.charset.StandardCharsets;
>
> public class EncodeGML3_2Example {
>
> @Test
> public void encodeGML32() {
> try {
> // Create a SimpleFeatureType
> SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
> typeBuilder.setName("SampleFeature");
> typeBuilder.add("geom", Point.class);
> typeBuilder.add("name", String.class);
> SimpleFeatureType featureType = typeBuilder.buildFeatureType();
>
> // Create and add features to SimpleFeatureCollection
> ListFeatureCollection featureList = new ListFeatureCollection(featureType
> );
> SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType
> );
> GeometryFactory geometryFactory = new GeometryFactory();
> Point point1 = geometryFactory.createPoint(new Coordinate(10, 10));
> featureBuilder.add(point1);
> featureBuilder.add("Point 1");
> SimpleFeature feature1 = featureBuilder.buildFeature("1");
> Point point2 = geometryFactory.createPoint(new Coordinate(20, 20));
> featureBuilder.add(point2);
> featureBuilder.add("Point 2");
> SimpleFeature feature2 = featureBuilder.buildFeature("2");
> featureList.add(feature1);
> featureList.add(feature2);
> SimpleFeatureCollection featureCollection = DataUtilities.collection(
> featureList);
>
> // Encode the SimpleFeatureCollection as GML 3.2
> GMLConfiguration gmlConfig = new GMLConfiguration(true);
> Encoder encoder = new Encoder(gmlConfig);
> encoder.setSchemaLocation("http://www.opengis.net/gml", "
> http://schemas.opengis.net/gml/3.2.1/gml.xsd");
> encoder.setNamespaceAware(true);
> encoder.setRootElementType(WFS.FeatureCollection);
> String gml = encoder.encodeAsString(featureCollection, GML.
> FeatureCollection);
>
> Assert.assertTrue(!gml.isEmpty());
>
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
>
> }
>

[Geotools-gt2-users] In need of some help using Geotools 28.2 to encode GML 3.2 ?

[Bart A. <bar...@gm...>]

Hi there,

I have been struggling with this for some time, even after investigating
the source code of both Geotools and GeoServer i cannot seem to get this to
work.

I have a extremely simple WFS 1.0 interface in an application and need to
update this to WFS 2.0 but i am stuck at encoding a SimpleFeatureCollection
to GML 3.2

I would be very grateful if someone who is very familiar with Geotools can
find some time to see what is wrong with my code, here is a copy of the
Junit test i am trying to get to work:

import org.geotools.data.DataUtilities;
import org.geotools.data.collection.ListFeatureCollection;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.gml3.v3_2.GML;
import org.geotools.gml3.v3_2.GMLConfiguration;
import org.geotools.wfs.WFS;
import org.geotools.xsd.Encoder;
import org.junit.Assert;
import org.junit.Test;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.GeometryFactory;
import org.locationtech.jts.geom.Point;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;

import javax.xml.namespace.QName;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

public class EncodeGML3_2Example {

@Test
public void encodeGML32() {
try {
// Create a SimpleFeatureType
SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
typeBuilder.setName("SampleFeature");
typeBuilder.add("geom", Point.class);
typeBuilder.add("name", String.class);
SimpleFeatureType featureType = typeBuilder.buildFeatureType();

// Create and add features to SimpleFeatureCollection
ListFeatureCollection featureList = new ListFeatureCollection(featureType);
SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType);
GeometryFactory geometryFactory = new GeometryFactory();
Point point1 = geometryFactory.createPoint(new Coordinate(10, 10));
featureBuilder.add(point1);
featureBuilder.add("Point 1");
SimpleFeature feature1 = featureBuilder.buildFeature("1");
Point point2 = geometryFactory.createPoint(new Coordinate(20, 20));
featureBuilder.add(point2);
featureBuilder.add("Point 2");
SimpleFeature feature2 = featureBuilder.buildFeature("2");
featureList.add(feature1);
featureList.add(feature2);
SimpleFeatureCollection featureCollection = DataUtilities.collection(
featureList);

// Encode the SimpleFeatureCollection as GML 3.2
GMLConfiguration gmlConfig = new GMLConfiguration(true);
Encoder encoder = new Encoder(gmlConfig);
encoder.setSchemaLocation("http://www.opengis.net/gml", "
http://schemas.opengis.net/gml/3.2.1/gml.xsd");
encoder.setNamespaceAware(true);
encoder.setRootElementType(WFS.FeatureCollection);
String gml = encoder.encodeAsString(featureCollection, GML.FeatureCollection
);

Assert.assertTrue(!gml.isEmpty());

} catch (Exception e) {
e.printStackTrace();
}
}

}

Re: [Geotools-gt2-users] How can I use geotools to parse geojson

[Jody G. <jod...@gm...>]

The parsers are around (in gt-geojson-core), although if you are interested
in supporting the geojson datastore you are welcome to volunteer to help
out :)

Jody

On Sun, Mar 26, 2023 at 7:43 PM Wzzzzzzj via GeoTools-GT2-Users <
geo...@li...> wrote:

>
> Hi:
>
>     I have a project want to use jar of geotools to process data from
> other service which provided is geojson, but now geojson plugin is not
> supported.
>     Is there an officially recommended method for geojson parsing?
> ------------------------------
> Wzzzzzzj
> 101...@qq...
>
> <https://wx.mail.qq.com/home/index?t=readmail_businesscard_midpage&nocheck=true&name=Wzzzzzzj&icon=http%3A%2F%2Fthirdqq.qlogo.cn%2Fg%3Fb%3Dsdk%26k%3Du5b35JiaTyqLAVm4QypRb3w%26s%3D100%26t%3D1556466694%3Frand%3D1644503191&mail=1019306750%40qq.com&code=>
>
> _______________________________________________
> GeoTools-GT2-Users mailing list
> Geo...@li...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>
-- 
--
Jody Garnett

[Geotools-gt2-users] How can I use geotools to parse geojson

[<101...@qq...>]

Hi:


    I have a project want to use jar of geotools to process data from other service which provided is geojson, but now geojson plugin is not supported. 
    Is there an officially recommended method for geojson parsing?


Wzzzzzzj
101...@qq...



 

Re: [Geotools-gt2-users] geojson-store fails with empty features FeatureCollection

[Taavi I. <ta...@ea...>]

Thank you Andrea. I could join the Jira and created the ticket about
the issue: https://osgeo-org.atlassian.net/browse/GEOT-7335

Cheers!

Taavi

On Mon, Feb 13, 2023 at 12:48 PM Andrea Aime
<and...@ge...> wrote:
>
> Hi Taavi,
> hopefully I made some room, can you try registering again?
>
> Best regards
> Andrea
>
> On Mon, Feb 13, 2023 at 9:02 AM Taavi Ilves <ta...@ea...> wrote:
>>
>> Hi.
>>
>> Can someone help to file the bug about it? I still can't join Geotools
>> Jira, since it's license limit has exceeded.
>>
>> Cheers,
>> Taavi Ilves
>>
>> On Fri, Feb 10, 2023 at 3:41 PM Roar Brænden <roa...@gm...> wrote:
>> >
>> > Hi,
>> >
>> > I would prefer an empty collection and schema. If that's possible.
>> > First thing would be to make that Jira ticket.
>> >
>> > I tried to have a look at it, but ended up with a different bug.
>> >
>> > Regards,
>> > Roar Brænden
>> >
>> >
>> >
>> > > 8. feb. 2023 kl. 12:03 skrev Taavi Ilves <ta...@ea...>:
>> > >
>> > > Thanks for the response.
>> > >
>> > > Yep, I also would prefer it failing early on over how it dies at the
>> > > moment. Previously (pre-24.3 or something like that), it failed with
>> > > NullPointerException. I didn't know about that 2008 spec was explicit
>> > > about non-empty features array, that probably could be it.
>> > >
>> > > About "actionable bug" I thought that code that fails is under
>> > > "unmaintained" directory so I didn't know what it means. And whether
>> > > filing bug, which was my first reaction, would even make sense because
>> > > it being unmaintained. I could propose change, but I'm not very
>> > > familiar with Geotools inner architecture to understand where the fix
>> > > belongs, would it still through error or give some other meaningful
>> > > result? If someone could point me in right direction with small
>> > > explanation, it would be helpful.
>> > >
>> > > Cheers,
>> > > Taavi
>> > >
>> > > On Tue, Feb 7, 2023 at 9:11 PM mark <mc....@gm...> wrote:
>> > >>
>> > >> Op 06-02-2023 om 16:31 schreef Taavi Ilves:
>> > >>> Hi
>> > >>>
>> > >>> I would have submitted the bug to JIRA, but I could not join it: "Your
>> > >>> email address ***@***.*** doesn't have access because
>> > >>> osgeo-org.atlassian.net has reached its license limit."
>> > >>>
>> > >>> Anyway, I'm not 100% sure if this had been actionable bug, since
>> > >>> `geojson-store` is under `modules/unsupported`, but here is my issue.
>> > >>>
>> > >>> GeoJSONDataStore dies with StackOverflowError when given this geojson:
>> > >>>
>> > >>> ```
>> > >>> {
>> > >>>     "type": "FeatureCollection",
>> > >>>     "features": []
>> > >>> }
>> > >>> ```
>> > >>>
>> > >>> AFAIK this is totally legit according to
>> > >>> https://www.rfc-editor.org/rfc/rfc7946#section-3.3 :
>> > >>>> The value of "features" is a JSON array. Each element of the array is a Feature object as defined above.  It is possible for this array to be empty.
>> > >>>
>> > >>> I reproduced with this GeoJSONDataStoreTest test (simplified test from
>> > >>> testFeatures() from same file):
>> > >>> ```
>> > >>>     @Test
>> > >>>     public void testEmptyFeatures() throws IOException {
>> > >>>         URL url = TestData.url(GeoJSONDataStore.class,
>> > >>> "empty-featureCollection.json");
>> > >>>
>> > >>>         GeoJSONDataStore fds = new GeoJSONDataStore(url);
>> > >>>         String type = fds.getNames().get(0).getLocalPart();
>> > >>>         fds.getFeatureReader(new Query(type), null);
>> > >>>     }
>> > >>> ```
>> > >>>
>> > >>> Code changes and stacktrace is here as well:
>> > >>> https://gist.github.com/ilvez/ff4325c0fe8bc67e7b3bb8c3795ca373
>> > >>>
>> > >>> Cheers,
>> > >>> Taavi
>> > >>>
>> > >>
>> > >> it seems to be bouncing back and forth trying to determine the schema;
>> > >> but that is never going to succeed without any feature so it continues
>> > >> to try until exhaustion.
>> > >>
>> > >> the reader could short-circuit on an empty collection, but you'd end up
>> > >> without a schema, which is pretty much useless in geotools... personally
>> > >> I'd prefer to fail with an exception early instead.
>> > >>
>> > >> This could be because the original 2008 geojson spec did not allow an
>> > >> empty array for features.
>> > >>
>> > >> not sure what you mean with "actionable bug"; this is a community
>> > >> project, basically anyone can propose a solution for this bug
>> > >>
>> > >> -M
>> > >>
>> > >>
>> > >>
>> > >> _______________________________________________
>> > >> GeoTools-GT2-Users mailing list
>> > >> Geo...@li...
>> > >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>> > >
>> > >
>> > > _______________________________________________
>> > > GeoTools-GT2-Users mailing list
>> > > Geo...@li...
>> > > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>> >
>>
>>
>> _______________________________________________
>> GeoTools-GT2-Users mailing list
>> Geo...@li...
>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>
>
>
> --
>
> Regards,
>
> Andrea Aime
>
> ==
> GeoServer Professional Services from the experts!
>
> Visit http://bit.ly/gs-services-us for more information.
> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
> GeoSolutions Group
> phone: +39 0584 962313
>
> fax:     +39 0584 1660272
>
> mob:   +39  339 8844549
>
>
> https://www.geosolutionsgroup.com/
>
> http://twitter.com/geosolutions_it
>
> -------------------------------------------------------
>
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