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java.lang.Objectorg.apache.jackrabbit.jcr2spi.LazyItemIterator
public class LazyItemIterator
LazyItemIterator
is an id-based iterator that instantiates
the Item
s only when they are requested.
Item
s that appear to be nonexistent
for some reason (e.g. because of insufficient access rights or because they
have been removed since the iterator has been retrieved) are silently
skipped. As a result the size of the iterator as reported by
getSize()
always returns -1.
Constructor Summary | |
---|---|
LazyItemIterator(ItemManager itemMgr,
HierarchyManager hierarchyMgr,
Iterator itemIds)
Creates a new LazyItemIterator instance. |
|
LazyItemIterator(ItemManager itemMgr,
Iterator hierarchyEntryIterator)
Creates a new LazyItemIterator instance. |
Method Summary | |
---|---|
long |
getPosition()
|
long |
getSize()
Returns the number of Item s in this iterator or -1 if the
size is unkown. |
boolean |
hasNext()
|
Object |
next()
|
Node |
nextNode()
|
Property |
nextProperty()
|
Version |
nextVersion()
|
void |
remove()
|
void |
skip(long skipNum)
|
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public LazyItemIterator(ItemManager itemMgr, Iterator hierarchyEntryIterator)
LazyItemIterator
instance.
itemMgr
- item managerhierarchyEntryIterator
- Iterator over HierarchyEntriespublic LazyItemIterator(ItemManager itemMgr, HierarchyManager hierarchyMgr, Iterator itemIds) throws ItemNotFoundException, RepositoryException
LazyItemIterator
instance.
itemMgr
- hierarchyMgr
- itemIds
-
ItemNotFoundException
RepositoryException
Method Detail |
---|
public Node nextNode()
nextNode
in interface NodeIterator
NodeIterator.nextNode()
public Property nextProperty()
nextProperty
in interface PropertyIterator
PropertyIterator.nextProperty()
public Version nextVersion()
nextVersion
in interface VersionIterator
VersionIterator.nextVersion()
public long getPosition()
getPosition
in interface RangeIterator
RangeIterator.getPosition()
public long getSize()
Item
s in this iterator or -1 if the
size is unkown.
Note: The number returned by this method may differ from the number
of Item
s actually returned by calls to hasNext() / getNextNode().
This is caused by the lazy instantiation behaviour of this iterator,
that may detect only upon iteration that an Item has been invalidated
or removed in the mean time. As soon as an invalid Item
is
detected, the size of this iterator is adjusted.
getSize
in interface RangeIterator
Item
s in this iterator.RangeIterator.getSize()
public void skip(long skipNum)
skip
in interface RangeIterator
RangeIterator.skip(long)
public boolean hasNext()
hasNext
in interface Iterator
Iterator.hasNext()
public Object next()
next
in interface Iterator
Iterator.next()
public void remove()
remove
in interface Iterator
UnsupportedOperationException
- always since removal is not implemented.Iterator.remove()
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