org.neo4j.index.internal.gbptree

Interface Header.Reader

Enclosing class:

Header

public static interface Header.Reader

Reads a header from a GBPTree state page during opening it.

Method Summary

Modifier and Type	Method and Description
void	read(org.neo4j.io.pagecache.PageCursor from, int length) Called when it's time to read header data from the most up to date and valid state page.

Method Detail

read

void read(org.neo4j.io.pagecache.PageCursor from,
          int length)

Called when it's time to read header data from the most up to date and valid state page. Due to the nature of the underlying PageCache this method may be called several times, some times with invalid data in the PageCursor. Because of this there mustn't be any exceptions thrown or decisions made based on the read data until the GBPTree constructor has been completely executed.

Parameters:

from - PageCursor positioned at beginning of the header data to read.

length - number of bytes available to read in the header data.