org.exist.storage.btree
Class BTree.BTreePageHeader

java.lang.Object
  org.exist.storage.btree.Paged.PageHeader
      org.exist.storage.btree.BTree.BTreePageHeader

Direct Known Subclasses:

DOMFile.DOMFilePageHeader

Enclosing class:

BTree

protected static class BTree.BTreePageHeader

extends Paged.PageHeader

Constructor Summary

BTree.BTreePageHeader()

BTree.BTreePageHeader(byte[] data, int offset)

Method Summary

short	getPointerCount() The number of pointers stored by this page
short	getValueCount() The number of values stored by this page
int	read(byte[] data, int offset)
void	setValueCount(short valueCount)
int	write(byte[] data, int offset)

Methods inherited from class org.exist.storage.btree.Paged.PageHeader

getDataLen, getLsn, getNextPage, getStatus, isDirty, setDataLen, setDirty, setLsn, setNextPage, setStatus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BTree.BTreePageHeader

public BTree.BTreePageHeader()

BTree.BTreePageHeader

public BTree.BTreePageHeader(byte[] data,
                             int offset)
                      throws java.io.IOException

Method Detail

read

public int read(byte[] data,
                int offset)
         throws java.io.IOException

Overrides:

read in class Paged.PageHeader

Throws:

java.io.IOException

write

public int write(byte[] data,
                 int offset)
          throws java.io.IOException

Overrides:

write in class Paged.PageHeader

Throws:

java.io.IOException

setValueCount

public final void setValueCount(short valueCount)

getValueCount

public final short getValueCount()

The number of values stored by this page

Returns:

The valueCount value

getPointerCount

public final short getPointerCount()

The number of pointers stored by this page

Returns:

The pointerCount value