Package db

Interface RecordIterator

All Known Implementing Classes:

AddressKeyRecordIterator, ConvertedRecordIterator, EmptyRecordIterator, KeyToRecordIterator, QueryRecordIterator, TranslatedRecordIterator

public interface RecordIterator

RecordIterator provides the ability to iterate over data records within a table.

Method Summary

Modifier and Type	Method	Description
boolean	delete()	Delete the last Record read via the next or previous methods.
boolean	hasNext()	Return true if a Record is available in the forward direction.
boolean	hasPrevious()	Return true if a Record is available in the reverse direction
DBRecord	next()	Return the next Record or null if one is not available.
DBRecord	previous()	Return the previous Record or null if one is not available.

Method Details

hasNext

boolean hasNext()
         throws IOException

Return true if a Record is available in the forward direction.

Throws:

IOException - thrown if an IO error occurs

hasPrevious

boolean hasPrevious()
             throws IOException

Return true if a Record is available in the reverse direction

Throws:

IOException - thrown if an IO error occurs

next

DBRecord next()
       throws IOException

Return the next Record or null if one is not available.

Throws:

IOException - thrown if an IO error occurs

previous

DBRecord previous()
           throws IOException

Return the previous Record or null if one is not available.

Throws:

IOException - thrown if an IO error occurs

delete

boolean delete()
        throws IOException

Delete the last Record read via the next or previous methods.

Returns:

true if record was successfully deleted.

Throws:

IOException - thrown if an IO error occurs.