Kotlin JSR 223 Scripting
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<properties> | |
<maven.compiler.target>1.8</maven.compiler.target> | |
<maven.compiler.source>1.8</maven.compiler.source> | |
<kotlin.version>1.3.10</kotlin.version> | |
</properties> | |
<dependencies> | |
<dependency> | |
<groupId>org.jetbrains.kotlin</groupId> | |
<artifactId>kotlin-stdlib</artifactId> | |
<version>${kotlin.version}</version> | |
</dependency> | |
<dependency> | |
<groupId>org.jetbrains.kotlin</groupId> | |
<artifactId>kotlin-compiler-embeddable</artifactId> | |
<version>${kotlin.version}</version> | |
<scope>runtime</scope> | |
</dependency> | |
<dependency> | |
<groupId>org.jetbrains.kotlin</groupId> | |
<artifactId>kotlin-script-runtime</artifactId> | |
<version>${kotlin.version}</version> | |
</dependency> | |
<dependency> | |
<groupId>org.jetbrains.kotlin</groupId> | |
<artifactId>kotlin-script-util</artifactId> | |
<version>${kotlin.version}</version> | |
</dependency> | |
</dependencies> |
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org.jetbrains.kotlin.script.jsr223.KotlinJsr223JvmLocalScriptEngineFactory |
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package analytical; | |
import javax.script.ScriptEngine; | |
import javax.script.ScriptEngineFactory; | |
import javax.script.ScriptEngineManager; | |
import javax.script.ScriptException; | |
import java.util.Arrays; | |
import java.util.List; | |
public class ScriptExample { | |
public static void main(String[] args) { | |
System.setProperty("idea.use.native.fs.for.win", "false"); | |
ScriptEngine engine = createKotlinScriptEngine(); | |
String predicate = "name.equals(\"Foo\")"; | |
String analyticScript = | |
String.format("println((bindings[\"records\"] as List<analytical.ScriptExample.Transport>).filter { it.%s } )", predicate); | |
List<Transport> transports = Arrays.asList(new Transport("Foo"), new Transport("Bar")); | |
// Add Java object to script engine | |
engine.put("records", transports); | |
try { | |
engine.eval(analyticScript); | |
} catch (ScriptException exception) { | |
exception.printStackTrace(); | |
} | |
} | |
private static ScriptEngine createKotlinScriptEngine() { | |
ScriptEngineManager engineManager = new ScriptEngineManager(); | |
ScriptEngine engine = engineManager.getEngineByExtension("kts"); | |
for (ScriptEngineFactory factory : engineManager.getEngineFactories()) { | |
System.out.println(factory.getEngineName()); | |
System.out.println("\t" + factory.getLanguageName()); | |
} | |
if (engine == null) { | |
System.out.println("Engine missing"); | |
System.exit(1); | |
} | |
return engine; | |
} | |
public static class Transport { | |
public String name; | |
public Transport(String name) { | |
this.name = name; | |
} | |
public String getName() { | |
return name; | |
} | |
@Override | |
public String toString() { | |
return name; | |
} | |
} | |
} |
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