org.iq80.leveldb.table

Class Table

java.lang.Object

org.iq80.leveldb.table.Table

All Implemented Interfaces:

Closeable, AutoCloseable

public final class Table
extends Object
implements Closeable

Constructor Summary

Constructors

Constructor and Description
Table(RandomInputFile source, Comparator<Slice> comparator, boolean paranoidChecks, ILRUCache<CacheKey,Slice> blockCache, FilterPolicy filterPolicy)

Method Summary

Modifier and Type	Method and Description
void	close()
long	getApproximateOffsetOf(Slice key) Given a key, return an approximate byte offset in the file where the data for that key begins (or would begin if the key were present in the file).
org.iq80.leveldb.table.FilterBlockReader	getFilter()
<T> T	internalGet(ReadOptions options, Slice key, KeyValueFunction<T> keyValueFunction)
SliceIterator	iterator(ReadOptions options)
Block	openBlock(Slice blockEntry, ReadOptions options)
protected org.iq80.leveldb.table.FilterBlockReader	readFilter(FilterPolicy filterPolicy, Slice filterHandle, boolean verifyChecksum)
protected Slice	readRawBlock(BlockHandle blockHandle, boolean verifyChecksum)
void	release()
boolean	retain() Try to retain current instance.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Table

public Table(RandomInputFile source,
             Comparator<Slice> comparator,
             boolean paranoidChecks,
             ILRUCache<CacheKey,Slice> blockCache,
             FilterPolicy filterPolicy)
      throws IOException

Throws:

IOException

Method Detail

readFilter

protected org.iq80.leveldb.table.FilterBlockReader readFilter(FilterPolicy filterPolicy,
                                                              Slice filterHandle,
                                                              boolean verifyChecksum)
                                                       throws IOException

Throws:

IOException

iterator

public SliceIterator iterator(ReadOptions options)

getFilter

public org.iq80.leveldb.table.FilterBlockReader getFilter()

openBlock

public Block openBlock(Slice blockEntry,
                       ReadOptions options)

readRawBlock

protected Slice readRawBlock(BlockHandle blockHandle,
                             boolean verifyChecksum)
                      throws IOException

Throws:

IOException

internalGet

public <T> T internalGet(ReadOptions options,
                         Slice key,
                         KeyValueFunction<T> keyValueFunction)

getApproximateOffsetOf

public long getApproximateOffsetOf(Slice key)

Given a key, return an approximate byte offset in the file where the data for that key begins (or would begin if the key were present in the file). The returned value is in terms of file bytes, and so includes effects like compression of the underlying data. For example, the approximate offset of the last key in the table will be close to the file length.

retain

public boolean retain()

Try to retain current instance.

Returns:

true if table was successfully retained, false otherwise

release

public void release()
             throws IOException

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException