Re: [Geotools-gt2-users] Using gt-referencing within an app bundled with JPackage - where does the epsg database go.

[Phil S. <P.S...@gn...>]

This turns out to be more a mystery than I first thought. I assumed the when running under JPACKAGE, it was not finding the epsg database, but logs didn’t show any sign of that. I requested stackdump in the exception, and I get:
org.opengis.referencing.NoSuchAuthorityCodeException: No code "EPSG:2193" from authority "EPSG" found for object of type "EngineeringCRS".
        at org.geotools.referencing.factory.epsg.CartesianAuthorityFactory.noSuchAuthorityException(CartesianAuthorityFactory.java:140)
        at org.geotools.referencing.factory.epsg.CartesianAuthorityFactory.createEngineeringCRS(CartesianAuthorityFactory.java:132)
        at org.geotools.referencing.factory.epsg.CartesianAuthorityFactory.createCoordinateReferenceSystem(CartesianAuthorityFactory.java:123)
        at org.geotools.referencing.factory.AuthorityFactoryAdapter.createCoordinateReferenceSystem(AuthorityFactoryAdapter.java:811)
        at org.geotools.referencing.factory.ThreadedAuthorityFactory.createCoordinateReferenceSystem(ThreadedAuthorityFactory.java:667)
        at org.geotools.referencing.DefaultAuthorityFactory.createCoordinateReferenceSystem(DefaultAuthorityFactory.java:172)
        at org.geotools.referencing.CRS.decode(CRS.java:507)
        at org.geotools.referencing.CRS.decode(CRS.java:428)

Reading this, I would assume that it didn’t find the plugin at all. Relevant bits of pom:        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-referencing</artifactId>
            <version>${geotools.version}</version>
        </dependency>
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-epsg-wkt</artifactId>
            <version>${geotools.version}</version>
        </dependency>
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-epsg-extension</artifactId>
            <version>${geotools.version}</version>
        </dependency>
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-api</artifactId>
            <version>15.0</version>
            <type>jar</type>
        </dependency>

( I been trying both wkt and h2sql plugins – same result for h2sql).
If I look at the shaded jar in the application image, I can see the plugin classes. I am pretty hazy though about plugins work in java – what would be reasons for the executable not to find them? As noted earlier, this works fine if run as jar on a machine with java already installed.



From: Jody Garnett <jod...@gm...>
Sent: Thursday, February 1, 2024 9:55 PM
To: Phil Scadden <P.S...@gn...>
Cc: geo...@li...
Subject: Re: [Geotools-gt2-users] Using gt-referencing within an app bundled with JPackage - where does the epsg database go.



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If you have done sharing correctly then plugin discovery works.

The zip is unpacked into the the temp folder I believe? Yes it is:

        File directory = new File(System.getProperty("java.io.tmpdir", "."), "Geotools");
        if (directory.isDirectory() || directory.mkdir()) {
            directory = new File(directory, "Databases/HSQL");
            if (directory.isDirectory() || directory.mkdirs()) {
                return directory;
            }
        }

You can also set a property "EPSG-HSQL.directory" to indicate where the database is located.

See https://github.com/geotools/geotools/blob/main/modules/plugin/epsg-hsql/src/main/java/org/geotools/referencing/factory/epsg/hsql/HsqlEpsgDatabase.java

--
Jody Garnett


On Jan 31, 2024 at 8:07:47 PM, Phil Scadden <P.S...@gn...<mailto:P.S...@gn...>> wrote:
I have a little console app (pushing excel sheet to a database), that runs fine as a shaded jar with java. However, I have folk using it that are reluctant to install java and I packaged it with JRT etc using JPackage. If the code is launched with JPackage, then it doesn’t find the EPSG database. Tried with both epgl-h2sql and epsg-wkt. No luck. JPackage allows me to specify a resource directory, but no idea what it would be. When the app runs, what exactly happens to say the EPSG.zip in epsg-h2sql for instance?

________________________________________________
Ngā mihi, Nā Phil Scadden (he/him)
Te Raraunga me te Tātaritanga Mokowā Aronuku (Geospatial Data and Analysis)
GNS Science Te Pῡ Ao
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Dunedin, New Zealand Ph +64 3 4799663, 027 3463185

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