Package db

Class KeyToRecordIterator

java.lang.Object

db.KeyToRecordIterator

All Implemented Interfaces:

RecordIterator

public class KeyToRecordIterator
extends Object
implements RecordIterator

Constructor Summary

Constructors

Constructor	Description
KeyToRecordIterator(Table table, DBFieldIterator keyIter)	Construct a record iterator from a secondary index key iterator.

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 nexy Record or null if one is not available.
DBRecord	previous()	Return the previous Record or null if one is not available.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

KeyToRecordIterator

public KeyToRecordIterator(Table table,
 DBFieldIterator keyIter)

Construct a record iterator from a secondary index key iterator.

Parameters:

keyIter - key iterator.

Method Details

hasNext

public boolean hasNext()
                throws IOException

Description copied from interface: RecordIterator

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

Specified by:

hasNext in interface RecordIterator

Throws:

IOException - thrown if an IO error occurs

See Also:

• RecordIterator.hasNext()

hasPrevious

public boolean hasPrevious()
                    throws IOException

Description copied from interface: RecordIterator

Return true if a Record is available in the reverse direction

Specified by:

hasPrevious in interface RecordIterator

Throws:

IOException - thrown if an IO error occurs

See Also:

• RecordIterator.hasPrevious()

next

public DBRecord next()
              throws IOException

Description copied from interface: RecordIterator

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

Specified by:

next in interface RecordIterator

Throws:

IOException - thrown if an IO error occurs

See Also:

• RecordIterator.next()

previous

public DBRecord previous()
                  throws IOException

Description copied from interface: RecordIterator

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

Specified by:

previous in interface RecordIterator

Throws:

IOException - thrown if an IO error occurs

See Also:

• RecordIterator.previous()

delete

public boolean delete()
               throws IOException

Description copied from interface: RecordIterator

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

Specified by:

delete in interface RecordIterator

Returns:

true if record was successfully deleted.

Throws:

IOException - thrown if an IO error occurs.

See Also:

• RecordIterator.delete()