GeoScript

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Create GeoScript Web App with JNDI and Maven

Gradle QuickstartΒΆ

This is a short example of how to use GeoScript Groovy to create a simple command line application with Gradle.

We are going to build command line that can project geometry read from WKT from one projection to another.

First, create project skeleton:

mkdir geo-gradle

cd geo-gradle/

touch build.gradle

mkdir -p src/main/groovy/org/geo

touch src/main/groovy/org/geo/App.groovy

Then edit the build.gradle file.

apply plugin: "groovy"
apply plugin: "application"

version = 0.1
mainClassName = "org.geo.App"

repositories {
    maven {
       url "http://repo.boundlessgeo.com/main"
    }
    maven {
       url "http://download.osgeo.org/webdav/geotools/"
    }
    maven {
       url "http://maven.geo-solutions.it/"
    }
    maven {
       url "https://artifacts.unidata.ucar.edu/content/repositories/unidata/"
    }
    mavenCentral()
}

dependencies {
   compile "org.codehaus.groovy:groovy-all:2.1.9"
   compile "org.geoscript:geoscript-groovy:1.4.0"
}

task wrapper(type: Wrapper) {
    gradleVersion = '1.12'
}

Create a gradle wrapper that will download a specific version of gradle:

gradle wrapper

Then, write a small application to project a WKT Geometry from one projection to another.

Edit src/main/groovy/org/geo/App.groovy:

package org.geo

import geoscript.geom.Geometry
import geoscript.proj.Projection

class App {
    static void main(String[] args) {
        Geometry geom = Geometry.fromString(args[0])
        Projection fromProj = new Projection(args[1])
        Projection toProj = new Projection(args[2])
        Geometry transformedGeom = fromProj.transform(geom, toProj)
        println transformedGeom.wkt
    }
}

Now you can compile the application (and fix any errors):

./gradlew build

Once your code compiles, you can create a command line application because we are using the “application” plugin:

./gradlew installApp

Run it!:

build/install/geo-gradle/bin/geo-gradle "POINT (1200533.72 648700.31)" "EPSG:2927" "EPSG:4326"

 POINT (-122.26636328086927 47.09868497461313)