Package org.apache.cassandra.index.sai.disk.v1.bbtree

Class BlockBalancedTreeReader

java.lang.Object

org.apache.cassandra.index.sai.disk.v1.bbtree.BlockBalancedTreeWalker

org.apache.cassandra.index.sai.disk.v1.bbtree.BlockBalancedTreeReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class BlockBalancedTreeReader
extends BlockBalancedTreeWalker
implements Closeable

Handles intersection of a point or point range with a block balanced tree previously written with BlockBalancedTreeWriter.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	BlockBalancedTreeReader.IntersectVisitor	We recurse the balanced tree, using a provided instance of this to guide the recursion.

Constructor Summary

Constructors

Constructor	Description
BlockBalancedTreeReader(IndexIdentifier indexIdentifier, FileHandle treeIndexFile, long treeIndexRoot, FileHandle postingsFile, long treePostingsRoot)	Performs a blocking read.

Method Summary

Modifier and Type	Method	Description
void	close()
int	getBytesPerValue()
long	getPointCount()
PostingList	intersect(BlockBalancedTreeReader.IntersectVisitor visitor, QueryEventListener.BalancedTreeEventListener listener, QueryContext context)

Methods inherited from class org.apache.cassandra.index.sai.disk.v1.bbtree.BlockBalancedTreeWalker

memoryUsage, newTraversalState

Methods inherited from class java.lang.Object

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

Constructor Details

BlockBalancedTreeReader

public BlockBalancedTreeReader(IndexIdentifier indexIdentifier,
 FileHandle treeIndexFile,
 long treeIndexRoot,
 FileHandle postingsFile,
 long treePostingsRoot)
                        throws IOException

Performs a blocking read.

Throws:

IOException

Method Details

getBytesPerValue

public int getBytesPerValue()

getPointCount

public long getPointCount()

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class BlockBalancedTreeWalker

intersect

public PostingList intersect(BlockBalancedTreeReader.IntersectVisitor visitor,
 QueryEventListener.BalancedTreeEventListener listener,
 QueryContext context)