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6.3. Using an Advanced Externalizer
Using a customized advanced externalizer helps optimize performance in Red Hat JBoss Data Grid.
- Define and implement the
readObject()andwriteObject()methods. - Link externalizers with marshaller classes.
- Register the advanced externalizer.
6.3.1. Implement the Methods 링크 복사링크가 클립보드에 복사되었습니다!
링크 복사링크가 클립보드에 복사되었습니다!
To use advanced externalizers, define and implement the
readObject() and writeObject() methods. The following is a sample definition:
import org.infinispan.commons.marshall.AdvancedExternalizer;
public class Person {
final String name;
final int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public static class PersonExternalizer implements AdvancedExternalizer<Person> {
@Override
public void writeObject(ObjectOutput output, Person person)
throws IOException {
output.writeObject(person.name);
output.writeInt(person.age);
}
@Override
public Person readObject(ObjectInput input)
throws IOException, ClassNotFoundException {
return new Person((String) input.readObject(), input.readInt());
}
@Override
public Set<Class<? extends Person>> getTypeClasses() {
return Util.<Class<? extends Person>>asSet(Person.class);
}
@Override
public Integer getId() {
return 2345;
}
}
}
Note
This method does not require annotated user classes. As a result, this method is valid for classes where the source code is not available or cannot be modified.