Package db

Interface DBFieldIterator

All Known Implementing Classes:

AddressIndexPrimaryKeyIterator

public interface DBFieldIterator

DBFieldIterator provides the ability to iterate over Field values within a table.

Method Summary

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

Method Details

hasNext

boolean hasNext()
         throws IOException

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

Throws:

IOException - thrown if an IO error occurs

hasPrevious

boolean hasPrevious()
             throws IOException

Return true if a Field is available in the reverse direction

Throws:

IOException - thrown if an IO error occurs

next

Field next()
    throws IOException

Return the next Field value or null if one is not available.

Throws:

IOException - thrown if an IO error occurs

previous

Field previous()
        throws IOException

Return the previous Field value or null if one is not available.

Throws:

IOException - thrown if an IO error occurs

delete

boolean delete()
        throws IOException

Delete the last record(s) associated with the last Field value read via the next or previous methods.

Returns:

true if record(s) was successfully deleted.

Throws:

IOException - thrown if an IO error occurs.