ion-jakarta-json

Ecode/Decode amazon ion as jakarta-json instances

Add dependency

Maven

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
    <dependencies>
        <dependency>
			<groupId>jakarta.json</groupId>
			<artifactId>jakarta.json-api</artifactId>
			<version>2.1.3</version>
		</dependency>
        <!-- You need a jakarta.json-api implementation -->
		<dependency>
			<groupId>org.eclipse.parsson</groupId>
			<artifactId>parsson</artifactId>
			<version>1.1.7</version>
		</dependency>

        <dependency>
			<groupId>at.bestsolution</groupId>
			<artifactId>ion-jakarta-json</artifactId>
			<version>1.0.0</version>
		</dependency>
    </dependencies>
</project>

Usage

Basic useage

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import com.amazon.ion.system.IonBinaryWriterBuilder;
import com.amazon.ion.system.IonReaderBuilder;

import jakarta.json.JsonValue;

...

public class Sample {
    ...
    public static void serialize(OutputStream stream, JsonValue value) throws IOException {
        var writer = IonBinaryWriterBuilder.standard().build(stream);
        IonJson.builder().build().encode(writer, value);
        writer.flush();
        writer.close();
    }

    public static JsonValue deserialize(InputStream stream) throws IOException {
        var reader = IonReaderBuilder.standard().build(stream);
        var value = IonJson.builder().build().decode(reader);
        reader.close();
        return value;
    }

}

Cached Strings

If you encode eg Enum-like strings it might make sense to reuse JsonString instances when deserializing them. Let's say your enum is made of 'DEFAULT', 'SUCCESS', 'ERROR' you can configure the MsgpackJson-instance like this.

var ionJson = IonJson.builder()
    .cachedStrings(Set.of("DEFAULT", "SUCCESS", "ERROR"))
    .build();

Cached Numbers

All numbers between -128 and 127 are cached, like Integer.valueOf() does it.