XML und JAXB

package at.aydin.lab.xml.legacy;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "customer")
public class LegacyCustomer {
    private String name;
    private String email;
    public LegacyCustomer() {
    }

    public LegacyCustomer(String name, String email) {
        this.name = name;
        this.email = email;
    }

    @XmlElement
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @XmlElement
    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

package at.aydin.lab.xml.modern;

import jakarta.xml.bind.annotation.XmlElement;
import jakarta.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "customer")
public class ModernCustomer {
    private String name;
    private String email;
    public ModernCustomer() {
    }

    public ModernCustomer(String name, String email) {
        this.name = name;
        this.email = email;
    }

    @XmlElement
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @XmlElement
    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

package at.aydin.lab.xml.legacy;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import java.io.StringWriter;

// Design Pattern: Mapper
// Zweck: Domänenobjekt und XML-Repräsentation werden kontrolliert ineinander überführt.
public final class LegacyXmlMapper {
    public String toXml(LegacyCustomer customer) throws Exception {
        JAXBContext context = JAXBContext.newInstance(LegacyCustomer.class);
        Marshaller marshaller = context.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        StringWriter writer = new StringWriter();
        marshaller.marshal(customer, writer);
        return writer.toString();
    }
}

package at.aydin.lab.xml.modern;

import jakarta.xml.bind.JAXBContext;
import jakarta.xml.bind.Marshaller;
import java.io.StringWriter;

// Design Pattern: Mapper
// Zweck: Jakarta JAXB kapselt die XML-Serialisierung hinter einer klaren API.
public final class ModernXmlMapper {
    public String toXml(ModernCustomer customer) throws Exception {
        JAXBContext context = JAXBContext.newInstance(ModernCustomer.class);
        Marshaller marshaller = context.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        StringWriter writer = new StringWriter();
        marshaller.marshal(customer, writer);
        return writer.toString();
    }
}

package at.aydin.lab.xml.legacy;

public final class XmlLegacyApplication {
    private XmlLegacyApplication() {
    }

    public static void main(String[] args) throws Exception {
        System.out.println(new LegacyXmlMapper().toXml(new LegacyCustomer("Aydin", "aydin@example.test")));
    }
}

package at.aydin.lab.xml.modern;

public final class XmlModernApplication {
    private XmlModernApplication() {
    }

    public static void main(String[] args) throws Exception {
        System.out.println(new ModernXmlMapper().toXml(new ModernCustomer("Aydin", "aydin@example.test")));
    }
}