Page.PageChildren
Contains information about which other pages are referenced (directly or
indirectly) by the given page. This is a subset of the page data, for
pages of type node. This information is used for garbage collection (to
quickly find out which chunks are still in use).
| Methods |
|---|
| static Page.PageChildren |
read(FileStore fileStore, long pos, int mapId, long filePos, long maxPos)
Read an inner node page from the buffer, but ignore the keys and
values.
|
| static Page.PageChildren |
read(FileStore fileStore, long pos, int mapId, long filePos, long maxPos)
Read an inner node page from the buffer, but ignore the keys and
values.
Parameters:
fileStore - the file store
pos - the position
mapId - the map id
filePos - the position in the file
maxPos - the maximum position (the end of the chunk)
Returns:
the page children object
|
| int |
getMemory()
|
| int |
getMemory()
|
| void |
removeDuplicateChunkReferences()
Only keep one reference to the same chunk.
|
| void |
removeDuplicateChunkReferences()
Only keep one reference to the same chunk. Only leaf references are
removed (references to inner nodes are not removed, as they could
indirectly point to other chunks).
|
EMPTY_ARRAY
An empty array of type long.
children
The page positions of (direct or indirect) children. Depending on the
use case, this can be the complete list, or only a subset of all
children, for example only only one reference to a child in another
chunk.
chunkList
Whether this object only contains the list of chunks.
pos
The position of the page.