K
- The type for the KeyV
- The type for the stored valuepublic class EmptyTupleCursor<K,V> extends TupleCursor<K,V>
depth, stack, transaction
Constructor and Description |
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EmptyTupleCursor()
Creates a new instance of EmptyTupleCursor.
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Modifier and Type | Method and Description |
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void |
afterLast()
Change the position in the current cursor to set it after the last key
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void |
beforeFirst()
Change the position in the current cursor before the first key
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void |
close() |
long |
getCreationDate()
Get the creation date
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long |
getRevision()
Always -1L for an empty cursor
|
boolean |
hasNext()
Always return false.
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boolean |
hasNextKey()
Always false
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boolean |
hasPrev()
Always false
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boolean |
hasPrevKey()
Always false
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Tuple<K,V> |
next()
Always throws a NoSuchElementException.
|
Tuple<K,V> |
nextKey()
Always throws a NoSuchElementException.
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Tuple<K,V> |
prev()
Always throws a NoSuchElementException.
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Tuple<K,V> |
prevKey()
Always throws a NoSuchElementException.
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String |
toString() |
public EmptyTupleCursor()
public void afterLast() throws IOException
afterLast
in class TupleCursor<K,V>
IOException
public void beforeFirst() throws IOException
beforeFirst
in class TupleCursor<K,V>
IOException
public boolean hasNext()
hasNext
in class TupleCursor<K,V>
public Tuple<K,V> next() throws NoSuchElementException
next
in class TupleCursor<K,V>
NoSuchElementException
- There is no element in a EmptyTupleCursorpublic Tuple<K,V> nextKey() throws NoSuchElementException
nextKey
in class TupleCursor<K,V>
NoSuchElementException
- There is no element in a EmptyTupleCursorpublic boolean hasNextKey()
hasNextKey
in class TupleCursor<K,V>
public boolean hasPrev()
hasPrev
in class TupleCursor<K,V>
public Tuple<K,V> prev() throws NoSuchElementException
prev
in class TupleCursor<K,V>
NoSuchElementException
- There is no element in a EmptyTupleCursorpublic Tuple<K,V> prevKey() throws NoSuchElementException
prevKey
in class TupleCursor<K,V>
NoSuchElementException
- There is no element in a EmptyTupleCursorpublic boolean hasPrevKey()
hasPrevKey
in class TupleCursor<K,V>
public void close()
close
in class TupleCursor<K,V>
public long getCreationDate()
getCreationDate
in class TupleCursor<K,V>
public long getRevision()
getRevision
in class TupleCursor<K,V>
public String toString()
toString
in class TupleCursor<K,V>
Object.toString()
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