Here is a set of interfaces that would allow reading partial data from the AIDA Store.
AIDA object would now have to manage its own data - retrieve missing data from the Store when needed, allow data parts that are not currently in use to be Garbage-Collected, backup temporary data to the Store.
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public interface Store extends OnDemandStore {
/*\*
\ * To be used with any simple AIDA object that has no
\ * internal structure, like: ICloud, IDataPointSet, IHstogram
\ */
IPatialData partialData(Object aidaObject, int row);
/*\*
\ * To be used with AIDA objects that has internal structure,
\ * like: ITuple
\ */
IComplexPatialData complexPartialData(Object aidaObject, String pathInObject, int\[\] rows);
}
public interface IPatialData {
int startRow();
int endRow();
Object data();
}
public interface IComplexPatialData {
int\[\] startRows();
int\[\] endRows();
String pathInObject();
Object data();
}
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Main problem with this approach is that AIDA object that requested the partial data does not know what is it getting back - it would need to cast generic Object to something specific, like ICloud, double[], etc.