Class LmdbPageCardinalityEstimator

java.lang.Object

org.eclipse.rdf4j.sail.lmdb.estimate.LmdbPageCardinalityEstimator

All Implemented Interfaces:

Closeable, AutoCloseable

public final class LmdbPageCardinalityEstimator
extends Object
implements Closeable

Constructor Summary

Constructors

Constructor	Description
LmdbPageCardinalityEstimator(File dataMdbFile)

Method Summary

Modifier and Type	Method	Description
void	close()
long	estimateEntries(long txnId, String dbName, byte[] minKey, int minKeyLength, byte[] maxKey, int maxKeyLength, GroupMatcher matcher)
long	totalEntries(long txnId, String dbName)

Methods inherited from class Object

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

Constructor Details

LmdbPageCardinalityEstimator

public LmdbPageCardinalityEstimator(File dataMdbFile)
                             throws IOException

Throws:

IOException

Method Details

estimateEntries

public long estimateEntries(long txnId,
 String dbName,
 byte[] minKey,
 int minKeyLength,
 byte[] maxKey,
 int maxKeyLength,
 GroupMatcher matcher)
                     throws IOException

Throws:

IOException

totalEntries

public long totalEntries(long txnId,
 String dbName)
                  throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException