org.apache.flink.contrib.streaming.state

类 TreeOrderedSetCache

java.lang.Object

org.apache.flink.contrib.streaming.state.TreeOrderedSetCache

所有已实现的接口:

RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

public class TreeOrderedSetCache
extends Object
implements RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Implementation of a lexicographically ordered set of byte-arrays, based on a TreeSet.

字段概要

从接口继承的字段 org.apache.flink.contrib.streaming.state.RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

LEXICOGRAPHIC_BYTE_COMPARATOR

方法概要

限定符和类型	方法和说明
boolean	add(byte[] toAdd) Adds the given element, if it was not already contained.
void	bulkLoadFromOrderedIterator(Iterator<byte[]> orderedIterator) Clears the cache and adds up to maxSize() elements from the iterator to the cache.
boolean	isEmpty() Returns size() == 0.
boolean	isFull() Returns size() == maxSize().
int	maxSize() Returns the maximum number of elements that can be stored in the cache.
byte[]	peekFirst() Returns the first element or null if empty.
byte[]	peekLast() Returns the last element or null if empty.
byte[]	pollFirst() Returns and removes the first element or returns null if empty.
byte[]	pollLast() Returns and removes the last element or returns null if empty.
boolean	remove(byte[] toRemove) Removes the given element, if it is contained.
int	size() Returns the number of contained elements.

从类继承的方法 java.lang.Object

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

方法详细资料

size

public int size()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns the number of contained elements.

指定者:

size 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

maxSize

public int maxSize()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns the maximum number of elements that can be stored in the cache.

指定者:

maxSize 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

isEmpty

public boolean isEmpty()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns size() == 0.

指定者:

isEmpty 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

isFull

public boolean isFull()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns size() == maxSize().

指定者:

isFull 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

add

public boolean add(@Nonnull
                   byte[] toAdd)

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Adds the given element, if it was not already contained. Returns true iff the cache was modified.

指定者:

add 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

remove

public boolean remove(@Nonnull
                      byte[] toRemove)

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Removes the given element, if it is contained. Returns true iff the cache was modified.

指定者:

remove 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

peekFirst

@Nullable
public byte[] peekFirst()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns the first element or null if empty.

指定者:

peekFirst 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

peekLast

@Nullable
public byte[] peekLast()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns the last element or null if empty.

指定者:

peekLast 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

pollFirst

@Nullable
public byte[] pollFirst()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns and removes the first element or returns null if empty.

指定者:

pollFirst 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

pollLast

@Nullable
public byte[] pollLast()

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Returns and removes the last element or returns null if empty.

指定者:

pollLast 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

bulkLoadFromOrderedIterator

public void bulkLoadFromOrderedIterator(@Nonnull
                                        Iterator<byte[]> orderedIterator)

从接口复制的说明: RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

Clears the cache and adds up to maxSize() elements from the iterator to the cache. Iterator must be ordered in the same order as this cache.

指定者:

bulkLoadFromOrderedIterator 在接口中 RocksDBCachingPriorityQueueSet.OrderedByteArraySetCache

参数:

orderedIterator - iterator with elements in-order.