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Interface NetricsRecSrc

All Known Subinterfaces:

NetricsDbRecSrc

All Known Implementing Classes:

NetricsArrayDbRecSrc, NetricsArrayRecSrc, NetricsCSVRecSrc

public interface NetricsRecSrc

This interface is used to provide records to the NetricsTable class. It's main purpose is to allow the user to implement a class which doesn't have to load all the table's records into memory at the same time, which can be a problem if the table is hundreds of megabytes.

One example of this is when the records are permanently stored in a file. The RecSrc could read the file one record at a time, and no more than one record would be in memory at once.

See Also:

NetricsTable, NetricsArrayRecSrc, NetricsCSVRecSrc

Method Summary

Methods

Modifier and Type	Method and Description
NetricsRecord	getNext() Returns the next record.
boolean	hasNext() Whether or not there are any further records.
void	reset() Restarts the sequence of records.

Method Detail

hasNext

boolean hasNext()
                throws NetricsRecSrcException

Whether or not there are any further records.

Throws:

NetricsRecSrcException

getNext

NetricsRecord getNext()
                      throws NetricsRecSrcException

Returns the next record.

Throws:

NetricsRecSrcException

reset

void reset()
           throws NetricsRecSrcException

Restarts the sequence of records.

Throws:

NetricsRecSrcException