org.apache.james.mailbox.events.Group Maven / Gradle / Ivy
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package org.apache.james.mailbox.events;
import java.util.Objects;
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
public class Group {
public static class GroupDeserializationException extends Exception {
GroupDeserializationException(Throwable cause) {
super(cause);
}
}
public static Group deserialize(String serializedGroup) throws GroupDeserializationException {
try {
Preconditions.checkNotNull(serializedGroup, "A serialized group can not be null");
Preconditions.checkArgument(!Strings.isNullOrEmpty(serializedGroup), "A serialized group can not be empty");
if (serializedGroup.startsWith(GenericGroup.class.getName() + GenericGroup.DELIMITER)) {
return new GenericGroup(serializedGroup.substring(GenericGroup.class.getName().length() + 1));
}
Class groupClass = Class.forName(serializedGroup);
return instanciateGroup(groupClass);
} catch (Exception e) {
throw new GroupDeserializationException(e);
}
}
private static Group instanciateGroup(Class aClass) throws InstantiationException, IllegalAccessException {
Preconditions.checkArgument(Group.class.isAssignableFrom(aClass), "The supplied class is not a group: " + aClass.getName());
return (Group) aClass.newInstance();
}
public String asString() {
return getClass().getName();
}
@Override
public boolean equals(Object o) {
if (o == null) {
return false;
}
return this.getClass().equals(o.getClass());
}
@Override
public int hashCode() {
return Objects.hash(getClass());
}
}