org.apache.flink.table.connector.source.lookup.cache

类 DefaultLookupCache

java.lang.Object

org.apache.flink.table.connector.source.lookup.cache.DefaultLookupCache

所有已实现的接口:

Serializable, AutoCloseable, LookupCache

@PublicEvolving
public class DefaultLookupCache
extends Object
implements LookupCache

Default implementation of LookupCache.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	DefaultLookupCache.Builder Builder for DefaultLookupCache.

方法概要

限定符和类型	方法和说明
void	close()
boolean	equals(Object o)
static DefaultLookupCache	fromConfig(org.apache.flink.configuration.ReadableConfig config)
Collection<RowData>	getIfPresent(RowData key) Returns the value associated with key in this cache, or null if there is no cached value for key.
int	hashCode()
void	invalidate(RowData key) Discards any cached value for the specified key.
static DefaultLookupCache.Builder	newBuilder() Creates a builder for the cache.
void	open(org.apache.flink.metrics.groups.CacheMetricGroup metricGroup) Initialize the cache.
Collection<RowData>	put(RowData key, Collection<RowData> value) Associates the specified value rows with the specified key row in the cache.
long	size() Returns the number of key-value mappings in the cache.

从类继承的方法 java.lang.Object

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

方法详细资料

newBuilder

public static DefaultLookupCache.Builder newBuilder()

Creates a builder for the cache.

fromConfig

public static DefaultLookupCache fromConfig(org.apache.flink.configuration.ReadableConfig config)

open

public void open(org.apache.flink.metrics.groups.CacheMetricGroup metricGroup)

从接口复制的说明: LookupCache

Initialize the cache.

指定者:

open 在接口中 LookupCache

参数:

metricGroup - the metric group to register cache related metrics.

getIfPresent

@Nullable
public Collection<RowData> getIfPresent(RowData key)

从接口复制的说明: LookupCache

Returns the value associated with key in this cache, or null if there is no cached value for key.

指定者:

getIfPresent 在接口中 LookupCache

put

public Collection<RowData> put(RowData key,
                               Collection<RowData> value)

从接口复制的说明: LookupCache

Associates the specified value rows with the specified key row in the cache. If the cache previously contained value associated with the key, the old value is replaced by the specified value.

指定者:

put 在接口中 LookupCache

参数:

key - - key row with which the specified value is to be associated

value - – value rows to be associated with the specified key

返回:

the previous value rows associated with key, or null if there was no mapping for key.

invalidate

public void invalidate(RowData key)

从接口复制的说明: LookupCache

Discards any cached value for the specified key.

指定者:

invalidate 在接口中 LookupCache

size

public long size()

从接口复制的说明: LookupCache

Returns the number of key-value mappings in the cache.

指定者:

size 在接口中 LookupCache

close

public void close()
           throws Exception

指定者:

close 在接口中 AutoCloseable

抛出:

Exception

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object