Package db
Class ConvertedRecordIterator
java.lang.Object
db.ConvertedRecordIterator
- All Implemented Interfaces:
RecordIterator
ConvertedRecordIterator
provides a RecordIterator wrapper
for performing record conversion frequently required when using older
data.-
Constructor Summary
ModifierConstructorDescriptionprotected
ConvertedRecordIterator
(RecordIterator originalIterator, boolean deleteAllowed) Constructor. -
Method Summary
Modifier and TypeMethodDescriptionprotected abstract DBRecord
convertRecord
(DBRecord record) Convert a record supplied by the underlying RecordIterator.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
Return true if a Record is available in the reverse directionnext()
Return the nexy Record or null if one is not available.previous()
Return the previous Record or null if one is not available.
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Constructor Details
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ConvertedRecordIterator
Constructor.- Parameters:
originalIterator
-deleteAllowed
- if false and delete is attempted, delete will throw an UnsupportedOperationException
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Method Details
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delete
Description copied from interface:RecordIterator
Delete the last Record read via the next or previous methods.- Specified by:
delete
in interfaceRecordIterator
- Returns:
- true if record was successfully deleted.
- Throws:
IOException
- thrown if an IO error occurs.- See Also:
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hasNext
Description copied from interface:RecordIterator
Return true if a Record is available in the forward direction.- Specified by:
hasNext
in interfaceRecordIterator
- Throws:
IOException
- thrown if an IO error occurs- See Also:
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hasPrevious
Description copied from interface:RecordIterator
Return true if a Record is available in the reverse direction- Specified by:
hasPrevious
in interfaceRecordIterator
- Throws:
IOException
- thrown if an IO error occurs- See Also:
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next
Description copied from interface:RecordIterator
Return the nexy Record or null if one is not available.- Specified by:
next
in interfaceRecordIterator
- Throws:
IOException
- thrown if an IO error occurs- See Also:
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previous
Description copied from interface:RecordIterator
Return the previous Record or null if one is not available.- Specified by:
previous
in interfaceRecordIterator
- Throws:
IOException
- thrown if an IO error occurs- See Also:
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convertRecord
Convert a record supplied by the underlying RecordIterator.- Parameters:
record
-- Returns:
- converted record
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