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java.lang.Objectorg.h2.util.CacheObject
org.h2.store.Page
org.h2.index.PageBtree
org.h2.index.PageBtreeLeaf
public class PageBtreeLeaf
A b-tree leaf page that contains index data. Format:
Field Summary |
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Fields inherited from class org.h2.index.PageBtree |
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data, entryCount, index, memoryEstimated, offsets, onlyPosition, parentPageId, rows, start, written |
Fields inherited from class org.h2.store.Page |
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changeCount, FLAG_LAST, TYPE_BTREE_LEAF, TYPE_BTREE_NODE, TYPE_DATA_LEAF, TYPE_DATA_NODE, TYPE_DATA_OVERFLOW, TYPE_EMPTY, TYPE_FREE_LIST, TYPE_STREAM_DATA, TYPE_STREAM_TRUNK |
Fields inherited from class org.h2.util.CacheObject |
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cacheChained, cacheNext, cachePrevious |
Method Summary | |
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void |
moveTo(Session session,
int newPos)
Copy the data to a new location, change the parent to point to the new location, and free up the current page. |
static Page |
read(PageBtreeIndex index,
Data data,
int pageId)
Read a b-tree leaf page. |
java.lang.String |
toString()
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void |
write()
Write the page. |
Methods inherited from class org.h2.index.PageBtree |
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canRemove, getMemory, readAllRows |
Methods inherited from class org.h2.store.Page |
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add, canMove, insert, insert, insert, remove, remove, remove |
Methods inherited from class org.h2.util.CacheObject |
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compareTo, getPos, isChanged, setChanged, setPos |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Method Detail |
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public static Page read(PageBtreeIndex index, Data data, int pageId)
index
- the indexdata
- the datapageId
- the page id
public void write()
Page
write
in class Page
public java.lang.String toString()
toString
in class java.lang.Object
public void moveTo(Session session, int newPos)
Page
moveTo
in class Page
session
- the sessionnewPos
- the new position
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